Patent ID: 6528647
Filing Date: 2003-03-04
Classification: C07D

Abstract:
A process for the synthesis of an aliphatic cyclic imine having four to six carbons, said process comprising introducing into a reactor at least one C4 to C6 dihydric alcohol wherein the hydroxyl groups are in terminal positions, reacting said C4 to C6 dihydric alcohol in a solvent and in the presence of excess ammonia in the presence of a metal impregnated ZSM-5 catalyst at a temperature in the range of 250Â° C. to 400Â° C. and weight hourly space velocity in the range of 0.25 to 1.00 hâˆ’1 to obtain said aliphatic cyclic amine, wherein the dihydric alcohol is introduced into the reactor in aqueous solution.