Continuous preparation of secondary amines from nitriles using a

Details Continuous preparation of secondary amines from nitriles using a Continuous preparation of secondary amines from nitriles using a

1990-09-17

1993-10-19

Robinson, Allen J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564491, 564493, 564470, C07C20900

Patent

active

052547370

ABSTRACT:
A method for producing secondary amines, particularly fatty secondary amines such as ditallowamine from fatty nitriles, such as tallow nitrile over a reduction, hydrogenation catalyst, such as nickel or cobalt, in two steps has been discovered. The reaction gives high selectivity of secondary amine over the coproduced primary and tertiary amines. The first step of the reaction is conducted continuously in the presence of ammonia and hydrogen. The secondary amine proportion is increased by a second stage using the same catalyst as the first stage, but in the absence of ammonia.

REFERENCES:
patent: 2781399 (1957-02-01), Shapiro
patent: 2811556 (1957-10-01), Shapiro
patent: 4248801 (1981-02-01), Tomidokoro et al.
patent: 4721811 (1988-01-01), Sherwin et al.
Tomidokoro, S., et al., "Preparation of Long-Chain Secondary Amines by Reduction of Nitriles," Chemical Abstracts, 106:175777t, Japan Tokkyo Koho JP 62 00,901; 1987,p.671.

Affiliated with

Also associated with

Rating

Continuous preparation of secondary amines from nitriles using a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Continuous preparation of secondary amines from nitriles using a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous preparation of secondary amines from nitriles using a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1353224