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CAS No. : | 96042-30-7 |
Formula : | C19H17N3O |
M.W : | 303.36 |
SMILES Code : | N#CC(C#N)=C1C=C(/C=C/C2=CC=C(N(C)C)C=C2)OC(C)=C1 |
MDL No. : | MFCD00051341 |
GHS Pictogram: | ![]() ![]() |
Signal Word: | Danger |
Hazard Statements: | H228-H315-H319-H332-H335 |
Precautionary Statements: | P210-P261-P305+P351+P338 |
Class: | 4.1 |
UN#: | 3175 |
Packing Group: | Ⅱ |
* 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 |
---|---|---|
33% | With triethanolamine; potassium carbonate; In methanol; N,N-dimethyl-formamide; | EXAMPLE 92(l) Synthesis of 2-Methyl-2-(4-pyridin-3-yl-imidazol-1-yl)-propionic acid ethyl ester To a solution of 3-(1H-Imidazol-4-yl)-pyridine (1 eq) in DMF was added potassium carbonate (2 eq) under dry condition. After stirring for 1 hour, ethyl 2-bromoisobutyrate (5 eq) was added to the mixture. The solution was left stirring over 36 hours at room temperature. The reaction solvent was removed in vacuo and the solid was diluted with ethyl acetate washed with H2O, NaCl(sat), dried over sodium sulfate, filtered and concentrated. The crude product was purified by flash chromatography using a solvent gradient of 97% DCM, 3% MeOH and 0.1% TEA to yield 2-Methyl-2-(4-pyridin-3-yl-imidazol-1-yl)-propionic acid ethyl ester (33%). MH+(260) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; sodium hypochlorite; In tetrahydrofuran; | b) To a mixture of 100 ml of 25% aqueous hydrochloric acid and 250 ml of DCM was added 18 g of 5-methyl-2-thio-pyridine. While the mixture was vigorously stirred and kept at -1 0 C. 250 ml of an aqueous solution containing 13% of sodium hypochlorite was carefully added. Upon completion of the addition, stirring was continued for 10 min. The organic layer was separated. To the aqueous layer 250 ml of DCM was added and the mixture was again treated as before with a further 250 ml batch of bleach. Upon completion of the addition, the organic layer was separated. The aqueous layer was extracted five times with 200 ml DCM. The organic layers were combined, dried over MgSO4 and evaporated. The resulting oil was dissolved in 125 ml of THF and cooled to -20 C. 25 ml of saturated aqueous ammonium hydroxide solution was slowly added. The mixture was stirred over night at room temperature. Excess of ammonia was neutralised by adding hydrochloric acid and the THF was removed in vacuo. The remaining aqueous solution was extracted three times with 150 ml of ethyl acetate. The combined organic layers were dried over MgSO4 and the solvent was evaporated. The remaining solid was recrystallized from boiling ethyl acetate to yield 13.35 g of 5-methyl-2-pyridine sulfonamide in form of beige crystals. 1H-NMR(D6-DMSO, 300 MHz): 2.37(s, 3H); 7.36(s, 2H); 7.78-7.85(m, 2H); 8.53(s, 1H); LC-MS: tR=2.32 min, [M+1]+=173.04, [M-1]-=171.10. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-ethyl-N,N-diisopropylamine; In methanol; ethanol; isopropyl alcohol; | 2-Chloro-N-(tetrahydro-pyran-4-yl)-adenosine A mixture of acetic acid 4R-acetoxy-5R-acetoxymethyl-2R-(2,6-dichloro-purin-9-yl)-tetrahydro-furan-3R-yl ester (10 g), diisopropylethylamine (5.7 ml), and 4-amino tetrahydropyran hydrochloride (2.02 g), in isopropanol (200 ml) was heated at 50° for 4 h. The cooled mixture was evaporated in vacuo, the residue re-dissolved in methanol (200 ml) and ammonia gas bubbled through the solution for 2 h. The mixture was stirred at 22° C. overnight, and evaporated in vacuo to give a brown oily solid. Purification by flash chromatography on silica gel (Merck 9385), eluding with 75:8:1 DCM:EtOH:880 NH3 to 50:8:1 DCM:EtOH:880NH3, gave the title compound as a pale brown oily solid (7.81 g). LC/MS (System B) Rt 2.24 min. Mass spectrum m/z 3.86 [MH+]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
5-Acetyl-1H-Benzotriazole [25] The ketone was prepared in the same manner as the benzotriazole aldehyde from <strong>[3325-11-9]5-aminobenzotriazole</strong> and acetaldoxime. Column chromatography of the crude ketone using DCM and eluding with MeOH (0-10percent) afforded the ketone in 11percent yield. Rf [A] 0.3; deltaH(400MHz; Acetone-d6) 2.68 (3H, s, CH3), 7.92 (1H, d, J 8.7, Ar-H), 8.07 (1H, d, J 8.7 Ar-H), 8.62 (1H, s, Ar-H); m/z (FAB-HR) 162.06674 [(M+H)+ calc. for C8H8N3O 162.06682]. The hydrazone of the ketone was prepared from 2,4DNPH to afford an orange solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
72% | With NaOH; In 1,4-dioxane; | Method A2R-Amino-3,3-dimethyl-butyric acid (5.02 g, 37.2 mmol) was added to a solution of DCM (25 mL) and dioxane (25 mL) in a glass pressure tube and cooled to -30° C. in a dry ice acetone bath. con H2SO4 (2.75 mL, 41.98 mmol) was added to the solution.Isobutene (25 mL) was condensed in a dry ice bath and added to the solution.The reaction mixture was warmed to rt over 1 h, then heated to 40° C. for 2 days.Reaction was cooled to -30° C. and the vessel was opened.Adjust the solution to pH=10 with 2N NaOH.The mixture was partition between Et2O and H2O.The aqueous layer was washed with Et2O three times, and the combined organic layers were extracted with brine and dried over Na2SO4.The drying agent was removed by vacuum filtration and 2R-amino-3,3-dimethyl-butyric acid tert-butyl ester (5.12 g, 72percent) was isolated by the evaporation of solvent under reduced pressure to afford a colorless oil.LC/MS=188 (M++1) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
15% | With sodium hydride; In tetrahydrofuran; n-heptane; mineral oil; | Route 4 (Route 3 See Example 12).2-[2-(4,6-Di-morpholin-4-yl-[1,3,5]triazin-2-yloxy)-ethyl]-phenol2-(2-Hydroxy-ethyl)-phenol (73 mg, 0.53 mmol) was added to a solution of 2-chloro-4,6-di-morpholin-4-yl-[1,3,5]triazine (151 mg, 0.53 mmol) in THF (3 ml) followed by sodium hydride (60percent suspension in mineral oil; 14 mg, 1.06 mmol) and the mixture was stirred at room temperature for 1 h and heated at 70° C. for 18 h.After cooling, the mixture was partitioned between water and EtOAc and the aqueous phase was extracted with EtOAc.The combined organic phases were dried (MgSO4) and concentrated in vacuo.The crude residue was purified by column chromatography with EtOAc/heptane (0-40percent gradient) as the eluent followed by trituration from DCM/heptane to give the title compound (30 mg, 15percent). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80% | With sodium t-butanolate;tris-(dibenzylideneacetone)dipalladium(0); In 5,5-dimethyl-1,3-cyclohexadiene; | Example 7 Synthesis of Compound 29 A suspension of (3-bromophenyl)(3-(dibenzo[b,d]furan-4-yl)phenyl)diphenylsilane (2.5 g, 4.30 mmol), 9H-3,9'-bicarbazole (1.715 g, 5.16 mmol), Pd2(dba)3 (0.079 g, 0.086 mmol), SPhos (0.071 g, 0.172 mmol), and sodium tert-butoxide (0.826 g, 8.60 mmol) in xylene (50 mL) was refluxed at 140 C. under nitrogen overnight. After cooling to room temperature, the reaction was quenched with water and extracted with toluene. The organic phase was isolated, washed with water, and dried over MgSO4. Upon evaporation of the solvent, the residue was purified by column chromatography on silica gel with hexane:DCM (8:2, v/v) as eluent, precipitation from DCM to ethanol to yield Compound 29 (2.86 g, 80%) as a white solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In water; ethyl acetate; toluene; | Stage 2: Stage 1 material (8.50 g) and 3,5-bis(4-tert-butylphenyl)phenyl-1-boronic acid pinacol ester (15.50 g) were dissolved in toluene (230 mL). The solution was purged with nitrogen for 1 h before 2-dicyclohexylphosphino-2',6'-dimethoxybiphenyl (66 mg) and tris(dibenzylidene)dipalladium (75 mg) were added using 10 mL of nitrogen-purged toluene. A 20wtpercent solution of tetraethylammonium hydroxide in water (60 mL) was added in one portion and the mixture as stirred for 20 h with the heating bath set to 105 °C. T.L.C. analysis indicated all the stage material had been consumed and only one fluorescent spot was observed. The reaction mixture was cooled and filtered into a separating funnel. The layers were separated and the aqueous layer extracted with toluene. The organic extracts were washed with water, dried with magnesium sulphate, filtered and concentrated to yield the crude product as a yellow/orange solid. Pure compound was obtained by column chromatography eluting with a gradient of ethyl acetate in hexanes followed by precipitation from DCM/methanol. HPLC indicated a purity of 99.75percent and a yield of 80percent (11.32g). 1H NMR (referenced to CDCl3): 7.83 (3H, d), 7.76 (6H, s), 7.73 (3H, s) 7.63 (12H, d) 7.49 (12H, d), 7.21 (3H, dd), 6.88 (3H, d), 4.28 (9H, s), 2.25 (3H, m), 1.98 (3H, m), 1.4-1.5 (57H, m), 1.23 (3H, m), 0.74 (9H, t) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dmap; potassium acetate; | Step 1: tert-Butyl (6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]thiazol-2-yl)carbamate A 100 mL flask charged with 2-amino-6-bromobenzothiazole (2.52 g, 10.77 mmol), bis(pinacolato)diboron (5.45 g, 21.24 mmol), potassium acetate (3.28 g, 33.09 mmol), 2-(dicyclohexylphosphino)-2',4',6'-triisopropylbiphenyl (212.2 mg, 0.436 mmol), and tris(dibenylideneacetone)dipalladium chloroform complex (117.9 mg, 0.110 mmol) was evacuated and backfilled with nitrogen. 1,4-Dioxane (20.0 mL, 233 mmol) was added and the reaction mixture stirred under a nitrogen balloon at 100° C. for 1 h. To the reaction was then added [1,1'-bis(diphenylphosphino)ferrocene]palladium(II) chloride, complex with DCM (1:1) (285.9 mg, 0.350 mmol). After an additional 17 h the reaction mixture was cooled to room temperature, filtered through celite, rinsing with ethyl acetate, and then evaporated to dry on celite. The crude product was purified via flash chromatography on silica gel (80 g silica, solvent gradient: 0-100percent isopropyl acetate in heptanes) to yield 2.85 g. Of this material, 2.64 g was combined with di-tert-butyl dicarbonate (2.58 g, 11.45 mmol), 4-dimethylaminopyridine (79.9 mg, 0.654 mmol) and DCM (20.0 mL, 312 mmol) and stirred at room temperature for 2 h. The mixture was evaporated in vacuo and the crude product was purified via flash chromatography on silica gel (40 g silica, solvent gradient: 0-50percent ethyl acetate in heptane) to yield 2.24 g of the title compound. LCMS (ESI): [M+H]+=377. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
31% | With nitrogen; sodium carbonate; | Step 2: tert-Butyl (6-(4-bromo-7,8,9,10-tetrahydro-6-oxa-2,10a-diazacycloocta[cd]inden-1-yl)benzo[d]thiazol-2-yl)carbamate A mixture of 4-bromo-1-iodo-7,8,9,10-tetrahydro-6-oxa-2,10a-diazacycloocta[cd]indene (1.0323 g, 2.6266 mmol), tert-butyl (6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]thiazol-2-yl)carbamate (2.031 g, 3.239 mmol), [1,1'-bis(diphenylphosphino)ferrocene]palladium(II) chloride, complex with DCM (1:1) (324.8 mg, 0.3977 mmol), sodium carbonate (847.5 mg, 7.92 mmol), water (3.0 mL, 170 mmol) and THF (9.0 mL, 110 mmol) was heated in a sealed vessel under nitrogen at 80° C. for 20 h. The reaction mixture was degassed by bubbling through nitrogen for 10 minutes, additional [1,1'-bis(diphenylphosphino)ferrocene]palladium(II) chloride, complex with DCM (1:1) (523 mg) was added, and the mixture heated at 80° C. for 6 h. The reaction mixture was cooled to room temperature, diluted with ethyl acetate, filtered, washed with water and brine, and evaporated in vacuo. The crude product was purified via flash chromatography on silica gel (40 g silica, solvent gradient: 0-100percent ethyl acetate in dichloromethane) to yield 0.4242 g (31percent) of the title compound as a yellow solid. LCMS (ESI): [M+H]+=514.95; 1H NMR (400 MHz, DMSO-d6) delta 11.94 (s, 1H), 8.32 (d, J=1.2 Hz, 1H), 7.84 (d, J=8.4 Hz, 1H), 7.72 (dd, J=8.3, 1.7 Hz, 1H), 7.69-7.64 (m, 1H), 7.12-7.06 (m, 1H), 4.52-4.41 (m, 2H), 4.36-4.26 (m, 2H), 2.24-2.11 (m, 2H), 1.78-1.63 (m, 2H), 1.53 (s, 9H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With ammonia; | Step 3: Preparation of tert-butyl 9-aminononanoate To a solution of the compound prepared in step 2 (200 mg, 0.682 mmol) was added 7N NH3 in MeOH and stirred at 50C for 24 hours. The reaction mixture was concentrated to give an oil. The crude mixture was purified by silica gel column chromatography using MeOH/DCM = 8 % to give the title compound (48 mg, 0.209 mmol, 30 %) as a yellow solid. 1H NMR (300 MHz, CDCl3) δ 6.92 (s, 2H), 3.04 (t, J = 7.7 Hz, 2H), 2.20 (t, J = 7.5 Hz, 2H), 1.91-1.73 (m, 2H), 1.63-1.50 (m, 2H), 1.50-1.37 (m, 11H), 1.37-1.21 (m, 6H). |
Tags: 96042-30-7 synthesis path| 96042-30-7 SDS| 96042-30-7 COA| 96042-30-7 purity| 96042-30-7 application| 96042-30-7 NMR| 96042-30-7 COA| 96042-30-7 structure
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