公开(公告)号：MY111913A

公开(公告)日：2001-02-28

申请号：MYPI19943084

申请日：1994-11-18

Applicant: BASF AG

Inventor： EBERHARD FUCHS ,  TOM WITZEL

IPC: C07D201/08 ,  C07D223/10

Abstract: A PROCESS FOR PREPARING CYCLIC LACTAMS BY REACTING AMINO CARBONITRILES WITH WATER IN LIQUIDPHASE IN THE PRESENCE OF HETEROGENEOUS CATALYSTS BASED ON'' TITANIUM DIOXIDE, ZIRCONIUM OXIDE, CERIUMOXIDE AND ALUMINUM OXIDE.

公开(公告)号：ID23897A

公开(公告)日：2000-05-25

申请号：ID20000612

申请日：1998-09-25

Applicant: BASF AG

Inventor： MANFRED JULIUS ,  HARDO SIEGEL ,  TOM WITZEL ,  WOLFGANG SIEGEL

IPC: C07D211/58

Abstract: The invention relates to a method for purifying 2,2,6,6-tetrasubstituted 4-amino-piperidines produced from the corresponding piperidin-4-ones, and subsequent distillation. According to the invention, the distilled 2,2,6,6-tetrasubstituted 4-amino-piperidine is reacted with hydrogen in the presence of a hydrating or dehydrating catalyst and the 4-amino piperidine is then separated from the reaction mixture.

公开(公告)号：MY112291A

公开(公告)日：2001-05-31

申请号：MYPI19951775

申请日：1995-06-28

Applicant: BASF AG

Inventor： EBERHARD FUCHS ,  TOM WITZEL

IPC: C07D201/08

Abstract: CYCLIC LACTAMS ARE PREPARED BY REACTING AN AMINOCARBOXYLIC ACID COMPOUND OF THE FORMULA IH2N-(CH2)M-COR1 (I)WHERE R1 IS -OH, -O-C1-C12-ALKYL OR -NR2RJ AND R2 AND R3, INDEPENDENTLY OF ONE ANOTHER, ARE EACH HYDROGEN, C1-C12-ALKYL OR C5-C8-CYCLOALKYL AND M IS AN INTEGER FROM 3 TO 12, WITH WATER BY A PROCESS IN WHICH THE REACTION IS CARRIED OUT IN THE LIQUID PHASE USING A HETEROGENEOUS CATALYST.

公开(公告)号：MY111427A

公开(公告)日：2000-04-29

申请号：MYPI19943086

申请日：1994-11-18

Applicant: BASF AG

Inventor： EBERHARD FUCHS ,  TOM WITZEL

IPC: C07D201/08 ,  C07D223/10

Abstract: CYCLIC LACTAMS ARE PREPARED BY REACTING AMINO CARBONITRILES WITH WATER IN LIQUID PHASE IN A FIXED BED REACTOR IN THE PRESENCE OF HETEROGENEOUS CATALYST WHICH HAVE NO SOLUBLE CONSTITUENTS UNDER REACTION CONDITIONS.