tert-Butyldimethylsilyl chloride → 5-[3-(Tert-butyl-dimethyl-silanyloxy)4-(3-chloro-phenyl)-butyl]-pyrrolidin-2-one

Participants

Reaction Steps

Analogous to the procedure described for Example 1A, Step C, 5-[4-(3-chloro-phenyl)-3-hydroxy-butyl]-pyrrolidin-2-one (1.53 g, 5.71 mmol) was reacted with tert-butyldimethylsilyl chloride (0.97 g, 6.4 mmol). Purification by medium pressure chromatography using a solvent gradient (1:1 hexanes:EtOAc to EtOAc to 1% MeOH in CH2Cl2 to 2% MeOH in CH2Cl2 to 4% MeOH in CH2Cl2) provided 5-[3-(tert-butyl-dimethyl-silanyloxy)-4-(3-chloro-phenyl)-butyl]-pyrrolidin-2-one (1.77 g). 1H NMR (CDCl3) δ7.16 (m, 3H), 7.01 (m, 1H), 5.61 (d, 1H), 3.83 (m, 1H), 3.58 (m, 1H), 2.68 (m, 2H), 2.28 (m, 3H), 1.73–1.36 (m, 5H), 0.84 (s, 9H), −0.05 (s, 3H), −0.2 (d, 3H).

Provenance & Evidence