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CAS No. : | 1016731-24-0 | MDL No. : | MFCD07772065 |
Formula : | C12H16N2O2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | BYCVYBQLKZYFBQ-UHFFFAOYSA-N |
M.W : | 220.27 | Pubchem ID : | 24692921 |
Synonyms : |
|
Chemical Name : | Benzyl 3-(aminomethyl)azetidine-1-carboxylate |
Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H302-H315-H319-H335 | 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 |
---|---|---|
0.09% | With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 72h; | 92 Intermediate 92A: Benzyl 3-(((2-fluoro-4-(methoxycarbonyl)-6- nitrophenyl)amino)methyl)azetidine-1-carboxylate A mixture of methyl 4-chloro-3-fluoro-5-nitrobenzoate (600 mg, 2.57 mmol), benzyl 3-(aminomethyl)azetidine-1-carboxylate (566 mg, 2.57 mmol) and potassium carbonate (1065 mg, 7.71 mmol) in DMF (10 mL) was stirred at RT for 3 days. The mixture was diluted with EtOAc (15 mL) and was washed with a solution of aqueous saturated sodium bicarbonate (2 x 15 mL). The organic layer was dried over sodium sulfate and concentrated. The crude product was subjected to ISCO flash chromatography (silica gel/hexane-EtOAc 100:0 to 0:100 gradient) to yield benzyl 3-(((2-fluoro-4- (methoxycarbonyl)-6-nitrophenyl)amino)methyl)azetidine-1-carboxylate (1.02 mg, 2.322 mmol, 0.090 % yield) as light brown gum. LC/MS (M+H): 418; LC retention time: 1.00 min (analytical HPLC Method 3). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
73.2% | With potassium carbonate In N,N-dimethyl-formamide at 60℃; for 18h; | 1 Intermediate 1A: Benzyl 3-(((2-methoxy-4-(methoxycarbonyl)-6- nitrophenyl)amino)methyl)azetidine-1-carboxylate A mixture of methyl 4-chloro-3-methoxy-5-nitrobenzoate (2.79 g, 11.35 mmol), benzyl 3-(aminomethyl)azetidine-1-carboxylate (2.5 g, 11.35 mmol) and potassium carbonate (4.71 g, 34.0 mmol) in DMF (20 mL) was stirred at 60 °C for 18 hours. The mixture was diluted with EtOAc (35 mL) and was washed with a solution of sodium sulfate and concentrated. The crude product was subjected to ISCO flash chromatography (silica gel/hexane-EtOAc 100:0 to 0:100 gradient) to yield benzyl 3-(((2- methoxy-4-(methoxycarbonyl)-6-nitrophenyl)amino)methyl)azetidine-1-carboxylate (3.755 g, 8.31 mmol, 73.2 % yield) as red gum. LC/MS (M+H): 430; LC retention time: 1.07 min (analytical HPLC Method 3). 1H NMR (499 MHz, CHLOROFORM-d) d 8.51 (d, J=1.9 Hz, 1H), 8.21 - 8.13 (m, 1H), 7.57 - 7.51 (m, 1H), 7.41 - 7.31 (m, 5H), 5.15 - 5.05 (m, 2H), 4.22 - 4.11 (m, 2H), 3.99 - 3.86 (m, 8H), 3.82 - 3.73 (m, 2H), 2.94 - 2.79 (m, 1H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: potassium carbonate / N,N-dimethyl-formamide / 18 h / 60 °C 2: sodium dithionite; water / ethanol / 4 h / 80 °C 3: water; sodium hydroxide / tetrahydrofuran / 18 h / 50 °C 4: triethylamine; (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate / N,N-dimethyl-formamide / 2 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: potassium carbonate / N,N-dimethyl-formamide / 72 h / 20 °C 2: sodium dithionite; water / ethanol / 18 h / 80 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: potassium carbonate / N,N-dimethyl-formamide / 72 h / 20 °C 2: sodium dithionite; water / ethanol / 18 h / 80 °C 3: water; sodium hydroxide / tetrahydrofuran / 18 h / 50 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: potassium carbonate / N,N-dimethyl-formamide / 72 h / 20 °C 2: sodium dithionite; water / ethanol / 18 h / 80 °C 3: water; sodium hydroxide / tetrahydrofuran / 18 h / 50 °C 4: triethylamine; (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate / N,N-dimethyl-formamide / 2 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: potassium carbonate / N,N-dimethyl-formamide / 18 h / 60 °C 2: sodium dithionite; water / ethanol / 4 h / 80 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: potassium carbonate / N,N-dimethyl-formamide / 18 h / 60 °C 2: sodium dithionite; water / ethanol / 4 h / 80 °C 3: water; sodium hydroxide / tetrahydrofuran / 18 h / 50 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: potassium carbonate / N,N-dimethyl-formamide / 18 h / 60 °C 2: sodium dithionite; water / ethanol / 4 h / 80 °C 3: water; sodium hydroxide / tetrahydrofuran / 18 h / 50 °C 4: triethylamine; (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate / N,N-dimethyl-formamide / 2 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: potassium carbonate / N,N-dimethyl-formamide / 18 h / 60 °C 2: sodium dithionite; water / ethanol / 4 h / 80 °C 3: water; sodium hydroxide / tetrahydrofuran / 18 h / 50 °C 4: triethylamine; (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate / N,N-dimethyl-formamide / 2 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: potassium carbonate / N,N-dimethyl-formamide / 18 h / 60 °C 2: water; sodium hydroxide / tetrahydrofuran / 18 h / 50 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: potassium carbonate / N,N-dimethyl-formamide / 18 h / 60 °C 2: water; sodium hydroxide / tetrahydrofuran / 18 h / 50 °C 3: triethylamine; (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate / N,N-dimethyl-formamide / 2 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: potassium carbonate / N,N-dimethyl-formamide / 18 h / 60 °C 2: water; sodium hydroxide / tetrahydrofuran / 18 h / 50 °C 3: triethylamine; (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate / N,N-dimethyl-formamide / 2 h / 20 °C 4: sodium dithionite; water / ethanol / 18 h / 80 °C / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: potassium carbonate / N,N-dimethyl-formamide / 18 h / 60 °C 2: water; sodium hydroxide / tetrahydrofuran / 18 h / 50 °C 3: triethylamine; (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate / N,N-dimethyl-formamide / 2 h / 20 °C 4: sodium dithionite; water / ethanol / 18 h / 80 °C / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: potassium carbonate / N,N-dimethyl-formamide / 18 h / 60 °C 2: sodium dithionite; water / ethanol / 4 h / 80 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: potassium carbonate / N,N-dimethyl-formamide / 18 h / 60 °C 2: sodium dithionite; water / ethanol / 4 h / 80 °C 3: water; sodium hydroxide / tetrahydrofuran / 18 h / 50 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: titanium tetrachloride; triethylamine / dichloromethane / 20 °C / Cooling with ice; Inert atmosphere 2: acetic acid; sodium cyanoborohydride / tetrahydrofuran; methanol / 6 h / 25 °C / Inert atmosphere | ||
Multi-step reaction with 2 steps 1: titanium tetrachloride; triethylamine / dichloromethane / 20 °C / Cooling with ice 2: methanol; sodium cyanoborohydride; acetic acid / tetrahydrofuran / 6 h / 25 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
913 mg | With titanium tetrachloride; triethylamine In dichloromethane at 20℃; Cooling with ice; Inert atmosphere; | a Step a) Benzyl 3- (((2,2, 2-trijluoro-1-(3-(trifluoromet hyl)phenyl) et hy 1) amino) met hy 1) azetidine-]25 carboxylate To a dry flask with septum was added benzyl 3-(aminomethyl)azetidine-1-carboxylate (0.5 g,2.27 mmol), NEt3 (689 mg, 949 .iL, 6.81 mmol), 2,2,2-trifluoro-1-(3-(trifluoromethyl)phenyl)ethan-1-one (554 mg, 391 1.iL, 2.27 mmol), and dry DCM (15 mL).Titanium tetrachloride 1 M in DCM (1.13 mL, 1.13 mmol) was added via a syringe and the flaskwas cooled in an ice bath (exothermic). The reaction was stirred at RT overnight, carefullyquenched with a solution of NaCNBH3 (428 mg, 6.81 mmol) in MeOH (4.36 g, 5.51 mL, 136 mmol) and acetic acid (0.1 mL) and stirred at RT overnight. The reaction was basified with sat. aq. NaHCO3 solution and the insoluble material obtained was filtered away over celite. The filtrate was extracted with DCM. The organic layers were combined, washed with brine, dried over Na2SO4 and concentrated in vacuo. The crude material was purified by flashchromatography (silica gel, 50 g, 0% to 50% EtOAc in n-heptane) to yield the desired compound as a colorless oil (913 mg). MS (ESI): mlz = 447.2 [M+H]. |
913 mg | With titanium tetrachloride; triethylamine In dichloromethane at 20℃; Cooling with ice; | a Step a) Benzyl 3-(((2,2,2-trifluoro-l-(3-(trifluoromethyl)phenyl)ethyl)amino)methyl)azetidine-l- carboxylate To a dry flask with septum was added benzyl 3-(aminomethyl)azetidine-l-carboxylate (0.5 g, 2.27 mmol), NEt3 (689 mg, 949 pL, 6.81 mmol), 2,2,2-trifluoro-l-(3- (trifluoromethyl)phenyl)ethan-l-one (554 mg, 391 pL, 2.27 mmol), and dry DCM (15 mL). Titanium tetrachloride 1M in DCM (1.13 mL, 1.13 mmol) was added via a syringe and the flask was cooled in an ice bath (exothermic). The reaction was stirred at RT overnight, carefully quenched with a solution of NaCNBH3 (428 mg, 6.81 mmol) in MeOH (4.36 g, 5.51 mL, 136 mmol) and acetic acid (0.1 mL) and stirred at RT overnight. The reaction was basified with sat. aq. NaHCCh solution and the insoluble material obtained was filtered away over celite. The filtrate was extracted with DCM. The organic layers were combined, washed with brine, dried over Na?S04 and concentrated in vacuo. The crude material was purified by flash (0914) chromatography (silica gel, 50 g, 0% to 50% EtOAc in n-heptane) to yield the desired compound as a colorless oil (913 mg). MS (ESI): m/z = 447.2 [M+H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1 g | With titanium tetrachloride; triethylamine; In dichloromethane; at 20.0℃;Cooling with ice; Inert atmosphere; | To a dry flask with septum was added under nitrogen benzyl 3-(aminomethyl)azetidine-1- carboxylate (0.500 g, 2.27 mmol, CAS RN 101673 1-24-0), NEt3 (689 mg, 949 .iL, 6.81 mmol), 1 -(2 ,4-dichlorophenyl)-2 ,2 ,2-trifluoroethan- 1-one (556 mg, 2.27 mmol, and dry DCM (16.4 mL). Titanium tetrachloride (1 M solution in DCM; 1.13 mL, 1.13 mmol) was added via a syringe to the ice-cooled flask (exothermic). The reaction was stirred at RT overnight, carefullyquenched with a solution of NaCNBH3 (428 mg, 6.81 mmol) in MeOH (4.36 g, 5.51 mL, 136 mmol) and stirred for 6 h. LCMS indicated the reaction stopped at the imine.The reaction was basified with sat. NaHCO3. The obtained insoluble material was filtered over celite and the filtrate was extracted with DCM. The organic layers were combined, washed with brine, dried over Na2504 and concentrated. The crude material was purified by flashchromatography (silica gel, 50 g, 0% to 50% EtOAc in n-heptane) to give the desired compound as a colorless oil (lg). |
1 g | With titanium tetrachloride; triethylamine; In dichloromethane; at 20.0℃;Cooling with ice; | To a dry flask with septum was added under nitrogen benzyl 3-(aminomethyl)azetidine-l- carboxylate (0.500 g, 2.27 mmol, CAS RN 1016731-24-0), NEt3 (689 mg, 949 pL, 6.81 mmol), l-(2,4-dichlorophenyl)-2,2,2-trifluoroethan-l-one (556 mg, 2.27 mmol, and dry DCM (16.4 mL). Titanium tetrachloride (1 M solution in DCM; 1.13 mL, 1.13 mmol) was added via a syringe to the ice-cooled flask (exothermic). The reaction was stirred at RT overnight, carefully quenched with a solution of NaCNBH3 (428 mg, 6.81 mmol) in MeOH (4.36 g, 5.51 mL, 136 mmol) and stirred for 6 h. LCMS indicated the reaction stopped at the imine. (0919) The reaction was basified with sat. NaHC03. The obtained insoluble material was filtered over celite and the filtrate was extracted with DCM. The organic layers were combined, washed with brine, dried over Na^SCb and concentrated. The crude material was purified by flash (0920) chromatography (silica gel, 50 g, 0% to 50% EtOAc in n-heptane) to give the desired compound as a colorless oil (lg). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
707 mg | With titanium tetrachloride; triethylamine In dichloromethane at 20℃; Cooling with ice; Inert atmosphere; | a Step a:) Benzyl 3-(((1-(2-chloro-4-fluorophenyl)-2, 2, 2-trifluoroethyl)amino) met hyl) azetidine-] - carboxylate To a dry flask under a stream of nitrogen was added benzyl 3-(aminomethyl)azetidine-1- carboxylate (0.5 g, 2.27 mmol), triethylamine (689 mg, 949 jiL, 6.81 mmol), 1-(2-chloro-4- fluoro-phenyl)-2,2,2-trifluoro-ethanone (519 mg, 2.27 mmol), and dry DCM (15 mL). Titaniumtetrachloride 1 M in DCM (1.13 mL, 1.13 mmol) was added via a syringe to the ice-cooled flask (exothermic). The reaction was stirred overnight at RT, carefully quenched with a methanolic solution of sodium cyanoborohydride (428 mg, 6.81 mmol) in methanol (4.36 g, 5.51 mL, 136 mmol) + Acetic Acid (0.1 mL) and stirred overnight at RT. The reaction was basified with sat. NaHCO3. The insoluble material obtained was filtered away over celite, the filtrate wasextracted with DCM, the organic layers were combined, washed with brine, dried over Na2504 and concentrated. Purification: The crude material was purified by flash chromatography (silica gel, 50 g, 0% to 50% EtOAc in heptane) to yield 707 mg of Benzyl 3-(((1 -(2-chloro-4- fluorophenyl)-2 ,2 ,2-trifluoroethyl)amino)methyl)azetidine- 1 -carboxylate as a colorless oil. MS (ESI): m/z = 431.2 [M+H]. |
707 mg | With titanium tetrachloride; triethylamine In dichloromethane at 20℃; | a Step a:) Benzyl 3-(((l-(2-chloro-4-fluorophenyl)-2,2,2-trifluoroethyl)amino)methyl)azetidine-l- carboxylate To a dry flask under a stream of nitrogen was added benzyl 3-(aminomethyl)azetidine-l- carboxylate (0.5 g, 2.27 mmol), triethylamine (689 mg, 949 pL, 6.81 mmol), l-(2-chloro-4- fluoro-phenyl)-2,2,2-trifluoro-ethanone (519 mg, 2.27 mmol), and dry DCM (15 mL). Titanium tetrachloride 1M in DCM (1.13 mL, 1.13 mmol) was added via a syringe to the ice-cooled flask (exothermic). The reaction was stirred overnight at RT, carefully quenched with a methanolic solution of sodium cyanoborohydride (428 mg, 6.81 mmol) in methanol (4.36 g, 5.51 mL, 136 mmol) + Acetic Acid (0.1 mL) and stirred overnight at RT. The reaction was basified with sat. NaHCCb. The insoluble material obtained was filtered away over celite, the filtrate was extracted with DCM, the organic layers were combined, washed with brine, dried over Na^SCb and concentrated. Purification: The crude material was purified by flash chromatography (silica gel, 50 g, 0% to 50% EtOAc in heptane) to yield 707 mg of Benzyl 3-(((l-(2-chloro-4- fluorophenyl)-2, 2, 2-trifluoroethyl)amino)methyl)azetidine-l -carboxylate as a colorless oil. MS (ES1): m/z = 431.2 [M+H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
61% | With triethylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In dichloromethane at 20℃; for 16h; | 8.1 Step 1: Synthesis of 3-((4-((2S,4S)-2-((difluoromethoxy)methyl)-4-(4-(trifluoromethyl)phenoxy)pyrrolidine-1-benzyl) benzoylamino) methyl) azetidine-1-carboxylate Combine HATU (1.06g, 2.79mmol), 3-(aminomethyl)azetidine-1-carboxylic acid benzyl ester (562mg, 2.55mmol), 4-((2S,4S)-2-((Fluoromethoxy)methyl)-4-(4-(trifluoromethyl)phenoxy)pyrrolidin-1-yl)benzoic acid (1.00g, 2.32mmol), TEA (0.50mL, 3.60mmol) successively Add DCM (12 mL) and stir at room temperature for 16 h.The reaction solution was concentrated under reduced pressure, the residue was diluted by adding DCM (40mL), and then using HCl solution (20mL, 1mol/L), saturated NaHCO3Solution (20mL), saturated NaCl solution (20mL) washing, anhydrous Na2SO4After drying and concentration under reduced pressure, the crude product was separated by silica gel column chromatography (eluent: DCM/EtOAc (v/v)=4/1) to obtain a pale yellow liquid (900 mg, 61%). |
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