Lithium Hydroxide → (2S,4R)-4-Methanesulfonyl-1-(5-methyl-2-phenethyl-2H-pyrazol-3-yl)-pyrrolidine-2-carboxylic Acid
Reaction equation
C[O:2][C:3]([C@@H:5]1[CH2:9][C@@H:8]([S:10]([CH3:13])(=[O:12])=[O:11])[CH2:7][N:6]1[C:14]1[N:15]([CH2:20][CH2:21][C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)[N:16]=[C:17]([CH3:19])[CH:18]=1)=[O:4].[OH-].[Li+]>>[CH3:13][S:10]([C@H:8]1[CH2:7][N:6]([C:14]2[N:15]([CH2:20][CH2:21][C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=3)[N:16]=[C:17]([CH3:19])[CH:18]=2)[C@H:5]([C:3]([OH:4])=[O:2])[CH2:9]1)(=[O:11])=[O:12]Participants
3
Procedure
In analogy to the procedure described in example 253e, (2S,4R)-4-methanesulfonyl-1-(5-methyl-2-phenethyl-2H-pyrazol-3-yl)-pyrrolidine-2-carboxylic acid methyl ester was saponified in the presence of lithium hydroxide to give the title compound as off-white solid which was used in the next step without further purification. MS (ESI): m/z=378.0 [M+H]+.