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CAS No. : | 6311-22-4 | MDL No. : | MFCD00183690 |
Formula : | C14H12O | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | ZMXJQEIJNHMYDY-UHFFFAOYSA-N |
M.W : | 196.24 | Pubchem ID : | 95933 |
Synonyms : |
|
Signal Word: | Warning | Class: | |
Precautionary Statements: | P264-P280-P302+P352-P305+P351+P338-P332+P313-P337+P313-P362 | UN#: | |
Hazard Statements: | H315-H319 | Packing Group: | |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With acetic anhydride |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
91% | ||
91% | 7 The synthesis of 4 starts from commercially available 9-fluorenone, which is methylated using MeMgl forming 26. This compound was then converted into 9-methyl-9W-fluorene by acid catalyzed dehydration in refluxing glacial acetic acid followed by overnight reduction using Pd/C and H2 (1 atm - balloon) in a one pot procedure. 9-Methyl-9W-fluorene was obtained in a 67% yield (2 steps) starting from 20 grams of 9-fluorenone ( 111 mmol). 9-Methyl-9AY-fiuorene was subsequently used to capture gaseous C02 after deprotonation using n-BuLi in cold THF. Using excess C02 resulted in a total isolated yield of 91% of the acid precursor 27 after recrystallization . 9-Methyl-9H- fluorene was also used for the capture of [13C]-C02 applied as limiting reagent, resulting in a 73% isolated yield of *27. 27 and *27 was then transformed quantitatively into their acid chloride derivatives 4 and *4 using oxalyl chloride and a ca DMF in CH2CI2 at 30 °C. | |
With diethyl ether |
In diethyl ether at 0℃; | ||
Stage #1: methyl magnesium iodide; 9-fluorenone In tetrahydrofuran; diethyl ether at 0 - 20℃; Stage #2: With water; sodium hydroxide In tetrahydrofuran; diethyl ether at 0℃; | ||
In tetrahydrofuran; diethyl ether at 0 - 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | In tetrahydrofuran at 0 - 20℃; for 16h; Glovebox; | 5 9-methyl-9H-fluoren-9-ol (Si). In a glovebox, a 250mL round-bottom flask was charged with 9H-fluoren-9-one (10.300 g, 57.2 mmol, 1.0 eq) and THF (8OmL), and the resultingsolution was cooled to 0°C. MeMgBr (20.0 mL of a 3.0 M solution, 0.6 mmol, 1.05 eq) was then slowly added using a syringe to the stirring solution, which turned into a slurry at the end of the addition. The mixture was warmed to room temperature and allowed to stir for 16 hours. The reaction vessel was then removed from the glovebox, and the reaction mixture was poured into a saturated solution of NH4C1 (200nth) and washed with brine (iOOmL x 2). Theorganic portion was collected, dried over MgSO4, filtered and concentrated under a nitrogenstream. The crude product was recrystallized in pentane (200nth) yielding Si (10.077 g, 90%)as a white powder. Alternatively, L5a can be purified on a BiotageTM silica column with agradient of 5-20% ethyl acetate in hexane. |
89.06% | In tetrahydrofuran; diethyl ether at 0 - 20℃; Glovebox; | In the glove-box at 0 C., G-1, fluorenone, (30.00 g, 166.5 mmol) in tetrahydrofuran (70 mE) is added to methylmagnesium bromide (66.5 mE, 199.5 mmol) in diethyl ether (500 mE). The reaction solution is stirred at tt. overnight. The reaction solution is cooled to 00 C. and 200 mE of water is added. The solution is brought to a pH of 9 with 2M NaOH. The organic fraction is washed with brine (3x200 mE), dried with magnesium sulfate, filtered and concentrated in vacuo yielding the yellow oil, G-2 (29.10 g, 148.28 mmol, 89.06% yield). |
88% | In diethyl ether for 2h; Heating; |
88% | Stage #1: 9-fluorenone; methylmagnesium bromide In diethyl ether at 0 - 20℃; Schlenk technique; Inert atmosphere; Stage #2: With water; ammonium chloride In diethyl ether Schlenk technique; Inert atmosphere; | |
49% | In diethyl ether at 0 - 20℃; Inert atmosphere; | |
49% | In diethyl ether at 0℃; for 0.166667h; | |
In tetrahydrofuran; diethyl ether at 0℃; for 4.5h; | I To a stirring solution of compound A (5 g, 27.7 mmol) in dry THF (60 mL) at 0° C., under N2, was added MeMgBr (3M in diethyl ether, 9.24 mL). The cooling bath was removed and the mixture was stirred for an additional 1.5 h. More MeMgBr (0.8 ml) was added to the reaction mixture followed by additional stirring for another 3 h. The reaction was carefully quenched with ice-water and extracted into ethyl acetate (3×100 mL). The combined organic layers were washed with brine (1×50 mL), dried (MgSO4), and concentrated to yield compound B (4.76 g): 1H-NMR (DMSO-d6) δ 7.73 (d, 2H), 7.53 (dd, 2H), 7.36-7.28 (m, 4H), 5.51 (s, 1H), 1.57 (s, 3H). | |
5.67 g | In tetrahydrofuran at 0℃; for 48h; | Synthesis of 9-methy-9H-fluoren-9-ol (1) In a glovebox, in a 50mL round bottom flask, 9H-fluorene-9-one (5.458g, 30.3mmol) was dissolved in 20 mL of THF and cooled to 0°C for 30 minutes. MeMgBr (1.2 eq.) was then slowly added via syringe while stirring. A slurry formed once all of the Grignard was added. The reaction was allowed to stir for 48 hours. The flask was then removed from the glovebox and 4mL of 2M NaOH were added. The mixture was washed with brine and the organic portion collected and dried over MgS04, filtered and the volatiles removed under a N2 stream. NMR of the resultant yellow solid showed pure 9-methyl-9H-fluoren-9-ol. Yield is 5.67g (95wt%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; acetic acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
54% | With lithium aluminium tetrahydride; oxygen In tetrahydrofuran at 0℃; for 2.5h; Reflux; | |
With pyridine; benzene-trimethyl-ammonium hydroxide; oxygen | ||
With sodium hydroxide; potassium permanganate |
Stage #1: 9-methylfluorene With triethylsilane; oxygen In acetonitrile for 1h; Irradiation; Stage #2: With triphenylphosphine |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogen azide; chloroform; sulfuric acid | ||
With sodium azide; chloroform; sulfuric acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | With triethylsilane; boron trifluoride diethyl etherate In dichloromethane at 0 - 20℃; | |
90% | With triethylsilane; boron trifluoride diethyl etherate In dichloromethane at 0 - 20℃; | |
76% | Stage #1: 9-methyl-9H-fluoren-9-ol In acetic acid Heating; Stage #2: With hydrogen In acetic acid at 20℃; Further stages.; |
74% | Stage #1: 9-methyl-9H-fluoren-9-ol With acetic acid Reflux; Stage #2: With hydrogen | 7 The synthesis of 4 starts from commercially available 9-fluorenone, which is methylated using MeMgl forming 26. This compound was then converted into 9-methyl-9W-fluorene by acid catalyzed dehydration in refluxing glacial acetic acid followed by overnight reduction using Pd/C and H2 (1 atm - balloon) in a one pot procedure. 9-Methyl-9W-fluorene was obtained in a 67% yield (2 steps) starting from 20 grams of 9-fluorenone ( 111 mmol). 9-Methyl-9AY-fiuorene was subsequently used to capture gaseous C02 after deprotonation using n-BuLi in cold THF. Using excess C02 resulted in a total isolated yield of 91% of the acid precursor 27 after recrystallization . 9-Methyl-9H- fluorene was also used for the capture of [13C]-C02 applied as limiting reagent, resulting in a 73% isolated yield of *27. 27 and *27 was then transformed quantitatively into their acid chloride derivatives 4 and *4 using oxalyl chloride and a ca DMF in CH2CI2 at 30 °C. |
70% | With hydrogen In acetic acid for 1h; Heating; | |
45% | With H | |
With hydrogen iodide; acetic acid | ||
With acetic acid anschliessende Hydrierung an Platin; | ||
88 % Spectr. | With 4,4'-di-tert-butylbiphenyl; lithium In tetrahydrofuran for 24h; ultrasonic irradiation; | |
With zinc In acetic acid | ||
With iodine; hypophosphorous acid In acetic acid | ||
With triethylsilane; diethyl ether; boron trifluoride | ||
Multi-step reaction with 2 steps 1: aluminium phosphate / 250 °C / im Vakuum 2: palladium black; diethyl ether / Hydrogenation | ||
With triethylsilane; boron trifluoride diethyl etherate In dichloromethane at 0℃; for 1h; | ||
Multi-step reaction with 2 steps 1: acetic acid / Reflux 2: palladium on carbon; hydrogen / 760.05 Torr | ||
With triethylsilane; boron trifluoride diethyl etherate In dichloromethane at 0℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With acetic anhydride nachf. Einw. von Methanol; | ||
Multi-step reaction with 2 steps 1: diethyl ether; hydrogen chloride 2: 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With bromine; acetic anhydride |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; iodine; tin(ll) chloride weiteres Reagens: Essigsaeure; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With diethyl ether; hydrogen bromide; magnesium sulfate at 0℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; diethyl ether |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With indium(III) bromide; trimethylsilylazide In dichloromethane at -10 - 25℃; Schlenk technique; Inert atmosphere; | |
With sodium azide; chloroform; trichloroacetic acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium azide; chloroform; trichloroacetic acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With pyridine |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With diethyl ether Erhitzen der Reaktionsloesung auf 100grad und anschliessendes Behandeln mit Wasser; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With acetic anhydride |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With acetic anhydride |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride In acetic acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride In acetic acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In diethyl ether |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride In acetic acid Heating; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride In acetic acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride In acetic acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 6% 2: 10% 3: 55% | In water Irradiation; | |
1: 55% 2: 6% 3: 10% | In water Irradiation; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
68% | for 24h; Ambient temperature; | |
With toluene-4-sulfonic acid Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78% | With sulfuric acid In dichloromethane at 20℃; for 3h; | 5 4-methyl-2-(9-methyl-9H-fluoren-9-yl)phenol (Si). In a SOOnth round-bottom flask, pcresol (7.8g, 72mmol, 2eq) was dissolved in DCM (200mL) followed by slow addition ofconcentrated sulfuric acid (3.916g, 37.93mmol, ieq). A solution of Si (7.403g, 37.72mmol,ieq) in DCM (i5OmL) was then added to the flask using an addition funnel, and the resultingyellow solution was stirred for 3 hours at room temperature during which the color turnedgreen. The reaction was basified with 2M NaOH to pH 9-10. The organic layer was collected,washed with brine, dried with Mg504 and concentrated under a nitrogen stream. The crude product was purified over a BiotageTM silica column using a gradient of 5-20% DCM in hexane, which yielded S2 (8.437g, 78%) as a white crystalline powder. |
With phosphoric acid or AlCl3; | ||
With sulfuric acid In dichloromethane for 2h; | Synthesis of 4-methyl-2-(9-methyl-9H-fluoren-9-yl) phenol (2) In a 200mL round bottom flask, p-cresol (2.075g, 19.2mmol) and 2 (3.766g, 19.2mmol) were dissolved in 80mL of CH2C12. 4 mL of cone. H2S04 (5 eq.) were added dropwise to the solution while stirring to produce a dark purple solution. After two hours, the purple solution was added slowly to 100 mL of H20 forming a white/blue precipitate. 2M NaOH was then added dropwise until the pH reached 9-10. The slurry was then washed with CH2CI2 (3 x 100 mL). The organic portion was then collected and dried with MgS04. Volatiles were removed under N2 leaving a brownish residue. The resultant product was purified on a silica column using a 5- 10% gradient of EtOAc/Hexane. |
With sulfuric acid In dichloromethane for 2h; | Synthesis of 4-methyl-2-(9-methyl-9H-fluoren-9-yl)phenol (2) 10190] In a 200 mE round bottom flask, p-cresol (2.075 g,19.2 mmol) and 2 (3.766 g, 19.2 mmol) are dissolved in 80 mE of CH2C12. 4 mE of conc. H2504 (5 eq.) are added dropwise to the solution while stirring to produce a dark purple solution. After two hours, the purple solution is added slowly to 100 mE of H20 forming a white/blue precipitate. 2M NaOH is then added dropwise until the pH reached 9-10. The slurry is then washed with CH2C12 (3x100 mE). The organic portion is then collected and dried with MgSO4. Volatiles are removed under N2 leaving a brownish residue. The resultant product is purified on a silica colunm using a 5-10% gradient of EtOAc/Hexane. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
15% | With acetonitrile Irradiation; | |
15% | With acetonitrile Irradiation; | |
Multi-step reaction with 2 steps 1: diethyl ether; hydrogen chloride 2: 80 °C |
Multi-step reaction with 2 steps 1: diethyl ether; hydrogen chloride 2: 80 °C | ||
With acetic acid Reflux; | ||
Multi-step reaction with 4 steps 1.1: acetic acid / Reflux 1.2: 760.05 Torr 2.1: n-butyllithium / hexane; tetrahydrofuran / 0.17 h / -78 °C / Inert atmosphere 2.2: 20 °C 3.1: oxalyl dichloride / N,N-dimethyl-formamide / dichloromethane / 3 h / 30 °C / Inert atmosphere 4.1: N-ethyl-N,N-diisopropylamine / bis(dibenzylideneacetone)-palladium(0); tri-tert-butyl phosphine / 1,4-dioxane / 4 h / 80 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 90% 2: 10% | With acetyl chloride In dichloromethane 1.) 0 deg C, 2.) room temperature, 1 h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dmap; triethylamine; 3,5-dinitrobenoyl chloride In dichloromethane for 4h; Ambient temperature; Title compound not separated from byproducts; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With perchloric acid; sodium perchlorate In water at 25℃; also in 1percent aq. sol. of mercaptoethanol; | ||
With fluorosulfonylchloride; antimony pentafluoride In fluorosulphonic acid | ||
With fluorosulfonylchloride; antimony pentafluoride; fluorosulphonic acid at -78℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
82% | With caesium fluoroxysulphate In acetonitrile | |
With caesium fluoroxysulphate In acetonitrile |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85 % Chromat. | With Selectfluor In acetonitrile for 0.5h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 81 % Chromat. 2: 17 % Chromat. | With potassium hydroxide In benzene at 80℃; for 34h; oth. phase-transfer catalyst, oth. solvent, oth. time, oth. base; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With perchloric acid; sodium perchlorate; water In various solvent(s) at 25℃; also in 1percent aq. sol. of mercaptoethanol; | ||
With water In various solvent(s) at 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dmap; triethylamine In dichloromethane for 4h; Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In tetrahydrofuran Yield given. Yields of byproduct given; | ||
In tetrahydrofuran Yield given; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | In N,N-dimethyl-formamide Yields of byproduct given; | |
In N,N-dimethyl-formamide Yield given. Yields of byproduct given; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 88% 2: 4.7% | In toluene at 80℃; for 3h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With monoaluminum phosphate at 250℃; im Vakuum; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 2,6-dimethylpyridine In diethyl ether at -10 - 0℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: 9-methylfluorene With triethylsilane; [Bu4N]4W10O32; oxygen In acetonitrile at 5 - 10℃; for 1h; Irradiation; Stage #2: With triphenylphosphine Further stages.; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With trifluoroacetic acid In dichloromethane at 20℃; for 18h; | I A mixture of compound B (1.5 g, 7.6 mmol), methyl thioglycolate (0.68 mL, 7.6 mmol) and trifluoroacetic acid (0.58 mL, 7.6 mmol) in CH2Cl2 (15 mL) was stirred at room temperature for 18 h, quenched with sat. sodium bicarbonate and extracted into CH2Cl2 (3×50 mL). The combined organic layers were washed with brine (1×50 mL), dried (MgSO4) and concentrated to give a crude product that was purified by silica gel column chromatography (hexane:ethyl acetate::8:1) to yield 1.8 g of product as a pale yellow solid: 1H-NMR (DMSO-d6) δ 7.84-7.82 (m, 2H), 7.57-7.55 (m, 2H), 7.41-7.34 (m, 4H), 3.21 (s, 3H), 2.58 (s, 2H), 1.71 (s, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 45 percent / H 2: 81 percent / AlCl3 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: H3PO4 / or AlCl3 2: SnCl4, lutidine |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: H3PO4 / or AlCl3 2: SnCl4, lutidine 3: ethanol / 1 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: concentrated aqueous HCl; acetic acid 2: aqueous HI |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: diethyl ether; hydrogen chloride 2: 80 °C 3: diethyl ether; petroleum ether; nitrogen dioxide 4: concentrated aqueous ammonia; alcohol 5: carbon disulfide; bromine / Sonnenlicht | ||
Multi-step reaction with 5 steps 1: diethyl ether; hydrogen chloride 2: 80 °C 3: diethyl ether; petroleum ether; nitrogen dioxide 4: concentrated aqueous ammonia; alcohol 5: carbon disulfide; bromine / Sonnenlicht |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: diethyl ether; hydrogen chloride 2: 80 °C 3: diethyl ether; petroleum ether; nitrogen dioxide 4: concentrated aqueous ammonia; alcohol | ||
Multi-step reaction with 4 steps 1: diethyl ether; hydrogen chloride 2: 80 °C 3: diethyl ether; petroleum ether; nitrogen dioxide 4: concentrated aqueous ammonia; alcohol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: pyridine | ||
Multi-step reaction with 2 steps 1: MgSO4; diethyl ether; HBr / 0 °C 2: 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: diethyl ether; hydrogen chloride 2: 80 °C 3: diethyl ether; petroleum ether; nitrogen dioxide | ||
Multi-step reaction with 3 steps 1: diethyl ether; hydrogen chloride 2: 80 °C 3: diethyl ether; petroleum ether; nitrogen dioxide |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: aq. HCl / acetic acid 2: H2 / Pd-C / acetic acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: aq. HCl / acetic acid 2: aq. KOH |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: aq. HCl / acetic acid 2: aq. KOH |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: aq. HCl / acetic acid 2: Cl2 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1.1: acetic acid / Reflux 2.1: palladium on carbon; hydrogen / 760.05 Torr 3.1: n-butyllithium / tetrahydrofuran; hexane / -78 °C / Inert atmosphere 3.2: -78 - 20 °C | ||
Multi-step reaction with 2 steps 1.1: acetic acid / Reflux 1.2: 760.05 Torr 2.1: n-butyllithium / hexane; tetrahydrofuran / 0.25 h / -78 °C / Inert atmosphere 2.2: 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1.1: acetic acid / Reflux 2.1: palladium on carbon; hydrogen / 760.05 Torr 3.1: n-butyllithium / tetrahydrofuran; hexane / -78 °C / Inert atmosphere 3.2: -78 - 20 °C 4.1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 3 h / 30 °C / Inert atmosphere | ||
Multi-step reaction with 3 steps 1.1: acetic acid / Reflux 1.2: 760.05 Torr 2.1: n-butyllithium / hexane; tetrahydrofuran / 0.25 h / -78 °C / Inert atmosphere 2.2: 20 °C 3.1: oxalyl dichloride / N,N-dimethyl-formamide / dichloromethane / 3 h / 30 °C / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: hydrogen bromide / water / 0.5 h / 60 °C / Reflux 2: sodium hydroxide / 1 h / 80 °C 3: 2 h / Reflux 4: thionyl chloride / benzene / 3 h / Reflux 5: ammonium hydroxide / dichloromethane / 0.5 h / 0 - 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: hydrogen bromide / water / 0.5 h / 60 °C / Reflux 2: sodium hydroxide / 1 h / 80 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: hydrogen bromide / water / 0.5 h / 60 °C / Reflux 2: sodium hydroxide / 1 h / 80 °C 3: 2 h / Reflux 4: thionyl chloride / benzene / 3 h / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: hydrogen bromide / water / 0.5 h / 60 °C / Reflux 2: sodium hydroxide / 1 h / 80 °C 3: 2 h / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: hydrogen bromide / water / 0.5 h / 60 °C / Reflux 2: sodium hydroxide / 1 h / 80 °C 3: 2 h / Reflux 4: thionyl chloride / benzene / 3 h / Reflux 5: ammonium hydroxide / dichloromethane / 0.5 h / 0 - 20 °C 6: dihydrogen peroxide / acetic acid / 2 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogen bromide In water at 60℃; for 0.5h; Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1.1: acetic acid / Reflux 1.2: 760.05 Torr 2.1: n-butyllithium / hexane; tetrahydrofuran / 0.17 h / -78 °C / Inert atmosphere 2.2: 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1.1: acetic acid / Reflux 1.2: 760.05 Torr 2.1: n-butyllithium / hexane; tetrahydrofuran / 0.17 h / -78 °C / Inert atmosphere 2.2: 20 °C 3.1: oxalyl dichloride / N,N-dimethyl-formamide / dichloromethane / 3 h / 30 °C / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1.1: acetic acid / Reflux 1.2: 760.05 Torr 2.1: n-butyllithium / hexane; tetrahydrofuran / 0.17 h / -78 °C / Inert atmosphere 2.2: 20 °C 3.1: oxalyl dichloride / N,N-dimethyl-formamide / dichloromethane / 3 h / 30 °C / Inert atmosphere 4.1: 1,8-diazabicyclo[5.4.0]undec-7-ene / bis(dibenzylideneacetone)-palladium(0); tri tert-butylphosphoniumtetrafluoroborate / tetrahydrofuran / Inert atmosphere; sealed tube 4.2: 48 h / 25 °C / Inert atmosphere; sealed tube |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1% Au/TiO2 In ethyl acetate at 55℃; for 1h; Overall yield = 96 %; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
60% | With tantalum pentafluoride In toluene at 110℃; for 2.5h; | General Procedure for benzylation of amines with benzyl alcohols General procedure: Aryl amines 1 (1 eq), benzyl alcohols 2 (1 eq) and dry toluene, TaF5 (0.1eq) was added. The mixture was stirred at 110 °C for 2.5 h and after completion of the reaction (TLC), the solvent was distilled under reduced pressure and the residue was passed through column chromatography (60-120 mesh silica gel, ethyl acetate : hexane = 1:20), the corresponding N-alkyl amines was obtained in good yields. The product was characterized by the following spectral data. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
74% | In tetrahydrofuran at -78 - 20℃; for 1h; Schlenk technique; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / dichloromethane / 2 h 2: ethanol / 16 h / Reflux 3: toluene / 1 h | ||
Multi-step reaction with 3 steps 1: sulfuric acid / dichloromethane / 2 h 2: formaldehyd / ethanol / 16 h / Reflux 3: toluene / 1 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: sulfuric acid / dichloromethane / 2 h 2: ethanol / 16 h / Reflux | ||
Multi-step reaction with 2 steps 1: sulfuric acid / dichloromethane / 2 h 2: formaldehyd / ethanol / 16 h / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 56% 2: 47% | With lithium aluminium tetrahydride In tetrahydrofuran at 4℃; for 3h; Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
37% | With acetic acid at 100℃; for 12h; regioselective reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / dichloromethane / 3 h / 20 °C 2: lithium chloride / ethanol / 72 h / 80 °C 3: toluene / 3 h / 60 °C / Glovebox |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / dichloromethane / 3 h / 20 °C 2: lithium chloride / ethanol / 72 h / 80 °C 3: toluene / 2 h / 60 °C / Glovebox |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / dichloromethane / 3 h / 20 °C 2: lithium chloride / water; methanol / 80 °C 3: toluene / 3 h / 60 °C / Glovebox |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / dichloromethane / 3 h / 20 °C 2: lithium chloride / water; methanol / 80 °C 3: toluene / 2.5 h / 60 °C / Glovebox |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: sulfuric acid / dichloromethane / 3 h / 20 °C 2: triethylamine; magnesium chloride / acetonitrile; N,N-dimethyl-formamide / 18 h / -35 - 20 °C / Glovebox 3: sodium tetrahydroborate; methanol / 16 h 4: phosphorus tribromide / dichloromethane / 1 h / Glovebox 5: triethylamine / tetrahydrofuran / 2 h 6: toluene / 1 h / 50 °C / Glovebox |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: sulfuric acid / dichloromethane / 3 h / 20 °C 2: triethylamine; magnesium chloride / acetonitrile; N,N-dimethyl-formamide / 18 h / -35 - 20 °C / Glovebox 3: sodium tetrahydroborate; methanol / 16 h 4: phosphorus tribromide / dichloromethane / 1 h / Glovebox 5: triethylamine / tetrahydrofuran / 2 h 6: toluene / 1 h / 50 °C / Glovebox |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: sulfuric acid / dichloromethane / 3 h / 20 °C 2: lithium chloride / ethanol / 72 h / 80 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: sulfuric acid / dichloromethane / 3 h / 20 °C 2: lithium chloride / water; methanol / 80 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / dichloromethane / 3 h / 20 °C 2: triethylamine; magnesium chloride / acetonitrile; N,N-dimethyl-formamide / 18 h / -35 - 20 °C / Glovebox 3: sodium tetrahydroborate; methanol / 16 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / dichloromethane / 3 h / 20 °C 2: triethylamine; magnesium chloride / acetonitrile; N,N-dimethyl-formamide / 18 h / -35 - 20 °C / Glovebox 3: sodium tetrahydroborate; methanol / 16 h 4: phosphorus tribromide / dichloromethane / 1 h / Glovebox |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: sulfuric acid / dichloromethane / 3 h / 20 °C 2: triethylamine; magnesium chloride / acetonitrile; N,N-dimethyl-formamide / 18 h / -35 - 20 °C / Glovebox 3: sodium tetrahydroborate; methanol / 16 h 4: phosphorus tribromide / dichloromethane / 1 h / Glovebox 5: triethylamine / tetrahydrofuran / 2 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% | With rhodium (II) octanoate dimer In toluene at 120℃; for 10h; Molecular sieve; Inert atmosphere; Schlenk technique; |