Preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine

Details Preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine Preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine

C - Chemistry, Metallurgy

07

C

C07C 211/36 (2006.01) C07C 209/48 (2006.01)

Patent

CA 2170555

A process for the preparation of 3-aminomethyl-3,5,5- trimethylcyclohexylamine from 3-cyano-3,5,5-trimethyl- cyclohexanone in three spatially separated reaction spaces, which comprises a) reacting the 3-cyano-3,5,5-trimethylcyclohexanone with excess ammonia on acidic metal-oxide catalysts in a first reaction space at from 20 to 150°C and from 50 to 300 bar, b) hydrogenating the resultant reaction products using hydrogen in a second reaction space in the presence of excess ammonia on hydrogenation catalysts, with or without basic components or on neutral or basic supports at from 50 to 100°C and at from 50 to 300 bar, and c) hydrogenating the resultant reaction products in the presence of hydrogen in a third reaction space on hydrogenation catalysts, with or without basic components or on neutral or basic supports at from 110 to 160°C and at from 150 to 300 bar.

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