公开(公告)号：SU591134A3

公开(公告)日：1978-01-30

申请号：SU2049593

申请日：1974-06-14

Applicant: SNIA VISCOSA

Inventor： SIKLARI FRANCHESKO ,  ROSSI PETRO PAOLO

IPC: C08G69/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/34 ,  C07C51/367 ,  C07C59/147 ,  C07C59/74 ,  C07C67/00 ,  C07C227/00 ,  C07C227/06 ,  C07C227/08 ,  C07C227/16 ,  C07C229/08 ,  C07C229/30 ,  C07D323/02 ,  C08G63/06 ,  C08G69/08 ,  C08G69/14 ,  C07C59/28

公开(公告)号：SU679130A3

公开(公告)日：1979-08-05

申请号：SU2325406

申请日：1976-02-24

Applicant: SNIA VISCOSA

Inventor： SIKLARI FRANCHESKO ,  ROSSI PETRO PAOLO ,  GAETANO MARIO DE

IPC: C07B61/00 ,  B01J23/00 ,  C07B31/00 ,  C07C67/00 ,  C07C227/00 ,  C07C227/06 ,  C07C227/08 ,  C07C227/10 ,  C07C229/08 ,  C07C101/447

Abstract: The specification describes a process for preparing saturated omega-aminoacids from olefinically unsaturated omega-aldehydoacids. According to the invention, the starting aldehydoacid is transformed into the corresponding iminoacid, and this is subjected to the hydrogenation both of the imino function and of the ethylenic double bond or double bonds, in a single stage and in the presence of an hydrogenation catalyst. The catalyst is a transition metal of one of the first two sub-groups of the VIII group of the periodic system, viz. is chosen among Fe, Ru, Os, Co, Rh, and Ir, and is used in the metal state or as a compound.

公开(公告)号：SU993815A3

公开(公告)日：1983-01-30

申请号：SU2896947

申请日：1980-03-21

Applicant: SNIA VISCOSA

Inventor： ROSSI PETRO PAOLO ,  GAETANO MARIO DE

IPC: C07C227/06 ,  C07C67/00 ,  C07C227/00 ,  C07C227/08 ,  C07C227/18 ,  C07C229/08 ,  C07C101/04

Abstract: A process for continuous or batch preparation of an omega -amino-acid is described, comprising the imination of an unsaturated aldehyde acid, the catalytic reduction in a single hydrogenation step of the imine of the ethylenically unsaturated straight chain omega -aldehyde acid in the presence of ammonia and an alkaline metal hydroxide whereby the alkaline salt of the imine is obtained, and the acidification of the alkaline salt of the omega -amino acid. The imine of formyl alkenoic acid is prepared at most at room temperature adding the acid to an ammonia solution of above 10%, then adding NaOH solution to the ammonia solution. The reductive imination is effectuated in two steps, first at 100 DEG -150 DEG C. and the second at 150 DEG -180 DEG C. under a 20-70 Ate pressure in the presence of a nickel catalyst. High yield and only few by-products are obtained.