cis-4-(2,6-Dimethyl-1-piperidinyl)butylamine → (R/S)-cis-N-[4-(2,6-dimethyl-1-piperidinyl)butyl]-2-(3-hydroxy-2-oxo-1-pyrrolidinyl)acetamide

Participants

Reaction Steps

3.0 g of ethyl (R/S)-2-(3-hydroxy-2-oxo-1-pyrrolidinyl)acetate and 5.9 g of cis-4-(2,6-dimethyl-1-piperidinyl)butylamine are heated to 95°-100° for 3.5 hours under nitrogen. The mixture is chromatographed on 70 g of aluminum oxide (activity grade III, neutral). The (R/S)-cis-N-[4-(2,6-dimethyl-1-piperidinyl)butyl]-2-(3-hydroxy-2-oxo-1-pyrrolidinyl)acetamide which is eluted with ethanol has a melting point of 90°-92° after crystallization from diethyl ether.

Provenance & Evidence