Methyl p-toluenesulfonate → tert-Butyl (2S)-2-{(3S)-3-[[(6-chloro-2-naphthyl)sulfonyl](methyl)amino]-2-oxopyrrolidin-1-yl}propanoate

Reaction equation

[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([S:12]([NH:15][C@H:16]1[CH2:20][CH2:19][N:18]([C@@H:21]([CH3:29])[C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[C:17]1=[O:30])(=[O:14])=[O:13])[CH:6]=[CH:5]2.[CH3:31][Si]([N-][Si](C)(C)C)(C)C.[Li+].S(C1C=CC(C)=CC=1)(OC)(=O)=O>C1COCC1>[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([S:12]([N:15]([CH3:31])[C@H:16]1[CH2:20][CH2:19][N:18]([C@@H:21]([CH3:29])[C:22]([O:24][C:25]([CH3:26])([CH3:28])[CH3:27])=[O:23])[C:17]1=[O:30])(=[O:13])=[O:14])[CH:6]=[CH:5]2