公开(公告)号：CZ294730B6

公开(公告)日：2005-03-16

申请号：CZ64698

申请日：1998-03-04

Applicant: BASF AG

Inventor： VOIT GUIDO DR ,  WITZEL TOM DR ,  MANFRED JULIUS DR

IPC: C07D211/12 ,  B01J21/04 ,  B01J21/06 ,  B01J21/08 ,  B01J31/02 ,  C07B61/00 ,  C07D211/58

Abstract: Preparation of 4-amino-2,2,6,6-tetramethylpiperidine (triacetone-diamine; TAD) comprises (1) converting 2,2,6,6-tetramethyl-piperidin-4-one (triacetone-amine; to TAA-imine by reaction with ammonia (NHi3) in the presence of (a) an acid metal oxide catalyst or (b) a solid acid catalysts that are practically insoluble in the reaction mixture (excluding (in)organic ion exchangers in the ammonium form); and (2) hydrogenating the TAA-imine in the presence of (c) a hydrogenation catalyst.

公开(公告)号：CZ9800646A3

公开(公告)日：1998-09-16

申请号：CZ64698

申请日：1998-03-04

Applicant: BASF AG

Inventor： VOIT GUIDO DR ,  WITZEL TOM DR ,  MANFRED JULIUS DR

IPC: C07D211/12 ,  B01J21/04 ,  B01J21/06 ,  B01J21/08 ,  B01J31/02 ,  C07B61/00 ,  C07D211/58

CPC classification number: C07D211/58

公开(公告)号：CZ64698A3

公开(公告)日：1998-09-16

申请号：CZ64698

申请日：1998-03-04

Applicant: BASF AG

Inventor： VOIT GUIDO DR ,  WITZEL TOM DR ,  MANFRED JULIUS DR

IPC: C07D211/12 ,  B01J21/04 ,  B01J21/06 ,  B01J21/08 ,  B01J31/02 ,  C07B61/00 ,  C07D211/58