Cesium carbonate → Rac-2-chloro-4-[(4r,5s)-4-(tert-butyldimethylsilyloxy)-3,3,5-trimethyl-2-oxopyrrolidin-1-yl]benzonitrile

Reaction equation

[Si:1]([O:8][CH:9]1[CH:13]([CH3:14])[NH:12][C:11](=[O:15])[C:10]1([CH3:17])[CH3:16])([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].Br[C:19]1[CH:26]=[CH:25][C:22]([C:23]#[N:24])=[C:21]([Cl:27])[CH:20]=1.C(=O)([O-])[O-].[Cs+].[Cs+].C1(P(C2C=CC=CC=2)C2C3OC4C(=CC=CC=4P(C4C=CC=CC=4)C4C=CC=CC=4)C(C)(C)C=3C=CC=2)C=CC=CC=1>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[Cl:27][C:21]1[CH:20]=[C:19]([N:12]2[C@@H:13]([CH3:14])[C@H:9]([O:8][Si:1]([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2])[C:10]([CH3:16])([CH3:17])[C:11]2=[O:15])[CH:26]=[CH:25][C:22]=1[C:23]#[N:24]