METHOD OF PRODUCING AMINES BY REDUCING AMIDES Russian patent published in 2010 - IPC C07C209/50 C07C211/03 C07C211/08 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing amines of the following formula: , which can be used in agricultural chemicals, pharmaceutical preparations, detergents and personal hygiene products. The method involves reduction of amides of the following formula: with hydrogen (H₂) in the presence of an auxiliary amine of the following formula: , where R1 is H or a saturated or unsaturated hydrocarbon group containing 1-23 carbon atoms, R2 and R3 independently represent H or a hydrocarbon group containing 1-8 carbon atoms and R4 corresponds to R1, but can distinguished by a different degree of saturation, in which the said H₂, the said auxiliary amine and the said amide are all supplied in completely gaseous state in form of a gas stream over a hydrogenation catalyst at reaction pressure above 2 bars but below 50 bars. The said gas stream contains at least N_c moles of carrier gases per mole of the said amide, where the carrier gases include at least the said auxiliary amine and the said H₂ in the ratio

where P_tol is the reaction pressure and VP_a is the pressure of saturated amide vapour at the reaction temperature.

EFFECT: obtaining target amine with high output and high selectivity.

9 cl, 6 tbl, 6 ex