o-Toluenesulfonyl chloride → 5-(3,4-Dimethoxyphenyl)-4,4-dimethyl-2-{1-[(2-methylphenyl)sulfonyl]piperidin-4-yl}-2,4-dihydro-3H-pyrazol-3-one
Reaction equation
Cl.[CH3:2][O:3][C:4]1[CH:5]=[C:6]([C:12]2[C:13]([CH3:25])([CH3:24])[C:14](=[O:23])[N:15]([CH:17]3[CH2:22][CH2:21][NH:20][CH2:19][CH2:18]3)[N:16]=2)[CH:7]=[CH:8][C:9]=1[O:10][CH3:11].[CH3:26][C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][C:28]=1[S:33](Cl)(=[O:35])=[O:34]>>[CH3:2][O:3][C:4]1[CH:5]=[C:6]([C:12]2[C:13]([CH3:25])([CH3:24])[C:14](=[O:23])[N:15]([CH:17]3[CH2:22][CH2:21][N:20]([S:33]([C:28]4[CH:29]=[CH:30][CH:31]=[CH:32][C:27]=4[CH3:26])(=[O:35])=[O:34])[CH2:19][CH2:18]3)[N:16]=2)[CH:7]=[CH:8][C:9]=1[O:10][CH3:11]Participants
3
Procedure
The title compound is prepared analogously as described for GP1 using 5-(3,4-dimethoxyphenyl)-4,4-dimethyl-2-(piperidin-4-yl)-2,4-dihydro-3H-pyrazol-3-one hydrochloride (compound B1*HCl) and 2-methylbenzenesulfonyl chloride as starting compounds. The crude product is purified by crystallization from methanol to yield the title compound.