Process for the preparation of amines

Details Process for the preparation of amines Process for the preparation of amines

C - Chemistry, Metallurgy

07

C

C07C 211/21 (2006.01) C07C 209/28 (2006.01) C07C 209/68 (2006.01) C07C 211/08 (2006.01)

Patent

CA 2105812

Process for the preparation of amines Abstract of the Disclosure A process for the preparation of amines of formula Image (1), wherein the variables are defined as in the claims, which comprises reacting 1 molar equivalent of an amine of formula Image (2) with 0.8 to 1.5 molar equivalents of an aldehyde of formula R-CHO (3) and 0.8 to 2 molar equivalents of formic acid, in aqueous medium, and adjusting the pH by addition of a mineral acid such that, at the conclusion of the reaction, the pH is in the range from 3 to 7. The compounds obtainable by the process are useful intermediates for the synthesis of dyeing assistants.

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