Methyl iodide → (2RS,5SR)-5-[5-(4-Fluoro-phenyl)-1-(toluene-4-sulfonyl)-pyrrolidin-2-yl]-2-methyl-2H-tetrazole
Reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[N:12]([S:13]([C:16]3[CH:21]=[CH:20][C:19]([CH3:22])=[CH:18][CH:17]=3)(=[O:15])=[O:14])[CH:11]([C:23]3[N:24]=[N:25][NH:26][N:27]=3)[CH2:10][CH2:9]2)=[CH:4][CH:3]=1.[C:28](=O)([O-])[O-].[K+].[K+].CI>CC(C)=O>[F:1][C:2]1[CH:3]=[CH:4][C:5]([CH:8]2[N:12]([S:13]([C:16]3[CH:21]=[CH:20][C:19]([CH3:22])=[CH:18][CH:17]=3)(=[O:15])=[O:14])[CH:11]([C:23]3[N:24]=[N:25][N:26]([CH3:28])[N:27]=3)[CH2:10][CH2:9]2)=[CH:6][CH:7]=1Participants
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Procedure
To a stirred solution of (2RS,5SR)-5-[5-(4-fluoro-phenyl)-1-(toluene-4-sulfonyl)-pyrrolidin-2-yl]-2H-tetrazole (0.72 g, 1.86 mmol) in acetone (30 ml) was added at room temperature potassium carbonate (0.51 g, 3.72 mmol) and methyl iodide (0.23 ml, 3.72 mmol) and the reaction mixture was heated under reflux conditions for 3 h. Aqueous work-up, column chromatography on silica gel (ethyl acetate/hexane 2:3) and crystallization from ethyl acetate/hexane yielded the title compound (0.44 g, 59%) as a white solid, m.p. 150° C. and MS: m/e=402.4 (M+H+). As second product of this reaction (2RS,5SR)-5-[5-(4-fluoro-phenyl)-1-(toluene-4-sulfonyl)-pyrrolidin-2-yl]-1-methyl-1H-tetrazole (0.26 g, yield 35%) was obtained as a white solid, m.p. 186° C. and MS: m/e=402.4 (M+H+).
Workup
- temperaturethe reaction mixture was heated under reflux conditions for 3 h
- customAqueous work-up, column chromatography on silica gel (ethyl acetate/hexane 2:3) and crystallization from ethyl acetate/hexane
Sources & evidence
- ORD record
- ord-09f471f0868f4fb985ced95792643dff
- Source dataset
- uspto-grants-2006_02
- Patent number
- US06995182B2
Reaction notes
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