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CAS No. : | 10288-36-5 | MDL No. : | MFCD02103729 |
Formula : | C8H8O3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | IGXSSRPZRAIXQF-UHFFFAOYSA-N |
M.W : | 152.15 | Pubchem ID : | 82520 |
Synonyms : |
|
Num. heavy atoms : | 11 |
Num. arom. heavy atoms : | 6 |
Fraction Csp3 : | 0.25 |
Num. rotatable bonds : | 0 |
Num. H-bond acceptors : | 3.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 39.34 |
TPSA : | 38.69 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -6.32 cm/s |
Log Po/w (iLOGP) : | 1.57 |
Log Po/w (XLOGP3) : | 1.28 |
Log Po/w (WLOGP) : | 1.16 |
Log Po/w (MLOGP) : | 0.47 |
Log Po/w (SILICOS-IT) : | 1.7 |
Consensus Log Po/w : | 1.24 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 1.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -1.99 |
Solubility : | 1.54 mg/ml ; 0.0102 mol/l |
Class : | Very soluble |
Log S (Ali) : | -1.69 |
Solubility : | 3.09 mg/ml ; 0.0203 mol/l |
Class : | Very soluble |
Log S (SILICOS-IT) : | -1.84 |
Solubility : | 2.21 mg/ml ; 0.0146 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 2.31 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | Packing Group: | N/A |
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 |
---|---|---|
56% | With potassium carbonate; at 90℃; for 16h; | To a stirred solution of compound 1 (30g, 238mmol, 1 eq) in 2- butanolne (500ml_), was added K2CO3 (98g, 714mmol, 3eq) and (137g, 714mmol, 3eq). The resulted reaction mixture was heated dibromo ethane at 90 C for 16h. The reaction was monitored with TLC. TLC analysis indicated formation of a non-polar spot. The reaction mixture was poured into ice water and extracted with ethyl acetate. The combined organic layer was dried over Na2S04 and concentrated under reduced pressure. The crude product was purified by column chromatography (silica 100-200) using 0-30% ethyl acetate in petroleum ether as an eluent to give Compound 2 (20g, 56% yield) as a yellow oil. LCMS: m/z 153.32 (M+H): |
With potassium carbonate; In butanone; for 18.5h;Heating / reflux; | A mixture of benzene-1,2,3-triol (4.39 g, 34.81 mmol, Aldrich), 1,2-dibromoethane (1 mL, 11.6 mmol, Aldrich) and potassium carbonate (1.60 g, 11.58 mmol, Aldrich) in 2-butanone (300 mL, Aldrich) was heated to reflux for 18.5 h with stirring in an oil-bath. The reaction mixture was cooled to room temperature and diluted with DCM (100 mL) and water (50 mL). The DCM layer was separated, washed with 10% aqueous Na2S2O3 (50 mL) and brine (100 mL), dried over anhydrous sodium sulfate, filtered, and evaporated. The residue was purified by silica gel column chromatography (gradient: 0-5% MeOH/DCM) to give the title compound as an amorphous solid. MS (ESI, pos. ion.) m/z: 153 (M+1). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Step A 5-(2-Bromoethoxy)-2,3-dihydro-1,4-benzodioxin Dry potassium carbonate (10 eq.) is added to a solution in toluene (100 ml) of the phenolic compound obtained in Preparation 6 (2 g). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
EXAMPLE 42 7,8-Ethylenedioxy-4-chromanone Using the procedure outlined in Example 37 but replacing 2,3-methylenedioxyphenol with 2,3-ethylenedioxyphenol provided the desired material. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
PREPARATION 3 2,3-Ethylenedioxyphenol (Compound of Formula (IV) where n=2) A suspension of pyrogallol (126 g) and potassium carbonate (138 g) in dimethylformamide (500 mL) was stirred at 80 C. for 2 hours. 1,2-Dibromoethane (188 g) was then added dropwise over a 4 hour period and the resulting mixture was stirred at 80 C. overnight. Upon cooling, the mixture was filtered, and the filtrate was evaporated, dissolved in water (200 mL) and acidified with concentrated hydrochloric acid. The resulting mixture was extracted with toluene. The orgainc extract was washed with water, dried over sodium sulfate, filtered and evaporated. Fractional distillation (82 C., 0.05 mm) afforded 54.7 g of 2,6-ethylenedioxyphenol, as an oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
43% | With 1,8-diazabicyclo[5.4.0]undec-7-ene; In tetrahydrofuran; at 130℃; for 2h; | Example 33 (S)-3-Cyclohexyl-2-[4-(2,3-dihydro-benzo[1,4]dioxin-5-yloxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-propionamide To a stirred mixture of <strong>[10288-36-5]2,3-dihydro-1,4-benzodioxin-5-ol</strong> (1.00 g, 6.58 mmol) and ethyl-2-butynoate (1.48 g, 13.16 mmol) in tetrahydrofuran (10 mL) was added 1,8-diazabicyclo[5.4.0]undec-7-ene (1.00 g, 6.58 mmol). After addition was complete the mixture was stirred at 130 C. for 2 h. Upon completion of the reaction the tetrahydrofuran was removed in vacuo and the residue redissolved in dichloromethane and washed with 2N aqueous hydrochloric acid, 5% aqueous sodium hydroxide solution, a saturated sodium chloride solution and dried over magnesium sulfate. The crude product obtained was purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 40 g; 0% to 50% ethyl acetate/hexanes) to afford, 3-(2,3-dihydro-benzo[1,4]dioxin-5-yloxy)-but-2-enoic acid ethyl ester (750 mg, 43%) as a colorless oil: LR-ES-MS m/z calculated for C14H16O5 [M]+ 264, observed [M+H]+ 265. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triphenylphosphine; diethylazodicarboxylate; In tetrahydrofuran; at -5 - 20℃; for 24h; | Example 8: Preparation of N,N-dimethyl-3-[(benzo[1,4]dioxan-5-yl-oxy)-3-(thiophen-2-yl)-propylamine] oxalate (compound I8) [Show Image] 3-Dimethylamino-1-(thiophen-2-yl)-1-propanol (1.85g, 0.01 mol), 5-hydroxyl-benzo[1,4]dioxane (1.52g, 0.01mol) and triphenylphosphine (3.93g, 0.015mol) were dissolved in 80 mL anhydrous tetrahydrofuran. The mixture was slowly added dropwise with the solution of diethyl azodicarboxylate (2.61 g, 0.015mol) in 20 mL anhydrous tetrahydrofuran, and the reaction temperature was controlled by an ice-salt bath to be below -5C. After compeletion of the addition, the ice-salt bath was removed, and the reaction was performed at room temperature for 24h. After the reaction, tetrahydrofuran was distilled out under a reduced pressure, and the obtained oil liquid was dissolved in 100 mL ethyl acetate. The mixture was washed with diluted sodium hydroxide aqueous solution and saturated sodium chloride aqueous solution respectively, dried over anhydrous sodium sulfate, and separated by silica gel column chromatography to obtain 1.56g of N,N-dimethyl-3-[(benzo[1,4]dioxan- 5-yl-oxy)-3-(thiophen-2-yl)-propylamine] as a yellow oil. The yellow oil was dissolved in 50 mL ethyl acetate, the mixture was added with 0.41g (0.045mol) oxalic acid to generate a pale yellow precipitate, heated to reflux, cooled to room temperature, frozen for 2h, and filtrated under vacumm. The filter cake was washed with cold ethyl acetate to obtain 1.69g of the target compound as a pale yellow powdery solid in a yield of 39.1% and a melting point of 89-92C. MS (m/e): 320.5 (M+1+). 1H-NMR delta (ppm, CDCl3-d3): 7.22-7.24(dd,1H,5'-H); 6.99-7.00 (d,1H,3'-H); 6.92-6.94(dd,1H,4'-H); 6.61-6.65(t,1H,7-H); 6.49-6.51(d, 2H,6,8-H); 5.48-5.51(t,1H, CHO); 4.23-4.31 (t,4H,2,3-H); 2.44-2.47(t,2H,CH2N); 2.35-2.42(m,1H,CH2CH2N); 2.25(s,6H,N(CH3)2); 2.08-2.13(m,1H, CH2CH2N). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Example 10: Preparation of N,N-dimethyl-3-[(benzo[1,4]dioxan-5-yl-oxy)-3-(furan-2-yl)propylamine] oxalate (compound I10) [Show Image] 3-Dimethylamino-1-(furan-2-yl)-1-propanol (1.69g, 0.01mol), 5-benzo[1,4]dioxane (1.52g, 0.01mol) and triphenylphosphine (3.93g, 0.015mol) was dissolved in 80 mL anhydrous tetrahydrofuran. The mixture was slowly added dropwise with the solution of diethyl azodicarboxylate (2.61g, 0.015mol) in 20 mL anhydrous tetrahydrofuran, and the reaction temperature was controlled by an ice-salt bath to be below -5C. After compeletion of the addition, the ice-salt bath was removed, and the reaction was performed at room temperature for 24h. After the reaction, tetrahydrofuran was distilled out under a reduced pressure, and the obtained oily liquid was dissolved in 100 mL ethyl acetate. The mixture was washed with diluted sodium hydroxide aqueous solution and saturated sodium chloride aqueous solution respectively, dried over anhydrous sodium sulfate, and separated by silica gel column chromatography to obtain 0.98g of N,N-dimethyl-3-[(benzo[1,4]dioxan- 5-yl-oxy)-3-(furan-2-yl)propylamine] as a yellow oil. The yellow oil was dissolved in 30 mL ethyl acetate, and added with oxalic acid (0.29g, 0.032mol) to generate a pale yellow precipitate. The mixture was heated to reflux, cooled to room temperature, frozen for 2h, and filtrated under vacumm. The filter cake was washed with cold ethyl acetate to obtain 0.75g of the target compound as a pale yellow powdery solid in a yield of 19.1% and a melting point of 101-103C. MS (m/e): 304.3 (M+1+), 326.2(M+Na+). 1H-NMR delta (ppm, DMSO-d6): 7.63(s,1H,5'-H); 6.62-6.66(t,1H,7-H); 6.54-6.56 (d,1H,6-H); 6.44-6.46 (d,1H,8-H); 6.39-6.40 (m,2H, 3',4'-H); 5.30-5.34(t,1H, CHO); 4.16-4.23(t,4H,2,3-H); 2.23-2.27(t,2H,CH2N); 1.99-2.23 (m,2H,CH2CH2N); 2.10 (s,6H, N(CH3)2). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; phosphorus(V) oxybromide; In dichloromethane; at -60 - 25℃; for 2h; | A solution of tribromophosphorus (2.87 g, 10 mmol)Was dissolved in dichloromethane (20 mL)Cooled to -60 C,A solution of 5-hydroxy-2,3-dihydrobenzo [1,4] dioxane (1.52 g, 10 mmol) and triethylamine (0.81 g, 0.8 mmol) in dichloromethane (10 mL) was slowly added dropwise.After completion of the dropwise addition, the cold bath was removed and the mixture was stirred at 25 C for 2 hours.The reaction system was further cooled to -60 C, L-alanine-4-fluorobenzyl ester hydrochloride (2.72 g, 15 mmol) was added, and then a solution of triethylamine (1.42 g, 14 mmol) in dichloromethane15 mL).After completion of the dropwise addition, the cold bath was removed and the mixture was stirred at 25 C for 2 hours.The reaction system was further cooled to -60 C and a solution of pentafluorophenol (1.66 g, 9 mmol) and triethylamine (1.82 g, 18 mmol) in dichloromethane (10 mL) was added dropwise.After completion of the dropwise addition, the cold bath was removed and the mixture was stirred at 25 C for 2 hours.The reaction was complete and the reaction system was poured into ice water and extracted with dichloromethane.The combined organic phases were washed with saturated brine solution, dried and concentrated by filtration to give intermediate (S) -4-fluorobenzyl-2 - ((pentafluorophenoxy) (2,3-dihydrobenzo [4] dioxino-5-oxo) phosphoryl) amino) propionate. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
20% | General procedure: 3,4,5-trimethoxyaniline (0.183 g, 1 mmol) was dissolved either in ethanol or water (5 mL) and cooled inice bath to -10 C. Then concentrated (37%) HCl (1 mL) was added dropwise and keep stirrer thesolution for 5 minutes. An ice-cold aqueous solution (5 mL) of NaNO2 (0.139 g, 2 mmol) was preparedand cooled at below -10 C in ice bath, concentrated (37%) HCl (1 mL) was added and then this solutionwas added dropwise to the aniline solution. The reacction mixture stirred in ice bath for one hour toprepare diazonium salt. Another basic solution of required phenolic compound (0.9 mmol) was preparedin aqueous solution of NaOH (0.800 g, 5 mL) and cooled in an ice bath to below -10 C. This cold basicphenolic solution was added dropwise into chilled diazonium salt solution. Then additional NaOH wasadded to neutralize the pH and then ice bath was removed. Further, reaction mixture was stirred foranother 2h at room temperature (r.t.). Afterwards the reaction mixture was acidifed by addition aqueousHCl (1N) and the product was extracted from aqueous solution using ethylacetate (50 mL x 3). Organiclayers were combined and washed with water (20 mL x 2), brine (20 mL x 2), dried over anhydrousNaSO4 and solvent was removed under vacuum. The product was purified through flash silica gel columnchromatography using ethylacetate/hexane mixture. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
60% | With triethylamine; magnesium chloride; In acetonitrile; at 0℃; for 4h;Reflux; | To a stirred solution of compound 2 (1 Og, 65.78mmol, 1 eq), in ACN (200ml_), was added TEA (35ml_, 263mmol, 4eq) followed by MgCh (9.3g, 98.68mmol, 1.5eq) at RT. The reaction mixture was cooled to 0 C and para formaldehyde (13.8g, 460.5mmol, 7eq) was added and the resulting reaction mixture was refluxed for 4h. The reaction was monitored by TLC. TLC analysis indicated formation of a non-polar spot. The reaction mixture was cooled to 0 C, acidified with aq 2N HCI solution and extracted with ethyl acetate. The combined organic layer was dried over Na2S04 and concentrated under reduced pressure to give Compound 3 (7g, 60% yield) as pale yellow liquid. LCMS: m/z 181 .33 (M+H): |
Tags: 10288-36-5 synthesis path| 10288-36-5 SDS| 10288-36-5 COA| 10288-36-5 purity| 10288-36-5 application| 10288-36-5 NMR| 10288-36-5 COA| 10288-36-5 structure
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H331 | Toxic if inhaled |
H332 | Harmful if inhaled |
H333 | May be harmful if inhaled |
H334 | May cause allergy or asthma symptoms or breathing difficulties if inhaled |
H335 | May cause respiratory irritation |
H336 | May cause drowsiness or dizziness |
H340 | May cause genetic defects |
H341 | Suspected of causing genetic defects |
H350 | May cause cancer |
H351 | Suspected of causing cancer |
H360 | May damage fertility or the unborn child |
H361 | Suspected of damaging fertility or the unborn child |
H361d | Suspected of damaging the unborn child |
H362 | May cause harm to breast-fed children |
H370 | Causes damage to organs |
H371 | May cause damage to organs |
H372 | Causes damage to organs through prolonged or repeated exposure |
H373 | May cause damage to organs through prolonged or repeated exposure |
Environmental hazards | |
Code | Phrase |
H400 | Very toxic to aquatic life |
H401 | Toxic to aquatic life |
H402 | Harmful to aquatic life |
H410 | Very toxic to aquatic life with long-lasting effects |
H411 | Toxic to aquatic life with long-lasting effects |
H412 | Harmful to aquatic life with long-lasting effects |
H413 | May cause long-lasting harmful effects to aquatic life |
H420 | Harms public health and the environment by destroying ozone in the upper atmosphere |
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