公开(公告)号：DE3765983D1

公开(公告)日：1990-12-13

申请号：DE3765983

申请日：1987-01-23

Applicant: BASF AG

Inventor： VAGT UWE DR ,  FISCHER ROLF DR ,  MERGER FRANZ DR ,  HUTMACHER HANS-MARTIN DR

IPC: C07D223/04 ,  C07D201/08

Abstract: epsilon -caprolactam is prepared by a process in which (a) a 5-formylvalerate is reacted with water in the presence of an acidic agent at from 30 DEG to 200 DEG C., (b) the 5-formylvaleric acid thus obtained is reacted with excess ammonia and hydrogen in the presence of a hydrogenation catalyst and of a solvent which is inert under the reaction conditions, at from 50 DEG to 150 DEG C. under superatmospheric pressure, and (c) after the ammonia has been separated off, the resulting solution of 6-aminocaproic acid is heated to 150 DEG -370 DEG C. and the caprolactam formed is isolated.

公开(公告)号：DE3718527A1

公开(公告)日：1988-12-15

申请号：DE3718527

申请日：1987-06-03

Applicant: BASF AG

Inventor： FISCHER ROLF DR ,  FRANK JUERGEN DR ,  MERGER FRANZ DR ,  ROEPER MICHAEL DR ,  VAGT UWE DR

IPC: C07D307/58 ,  C07D315/00 ,  B01J21/02 ,  B01J21/06 ,  B01J27/16 ,  B01J23/22 ,  B01J23/26 ,  B01J29/04

Abstract: 2(5H)-furanones I (I) where R1 and R2 are each hydrogen, C1-C6-alkyl, C5- or C6-cycloalkyl, C7-C12-aralkyl or aryl, are prepared by heating a 3-formylcarboxylate or 3-formylcarboxylic acid II (II) where R3 is hydrogen, C1-C12-alkyl, C5- or C6-cycloalkyl, C7-C12-aralkyl or aryl, to 100 DEG -450 DEG C. in the presence of an acidic catalyst.

公开(公告)号：DE3609138A1

公开(公告)日：1987-09-24

申请号：DE3609138

申请日：1986-03-19

Applicant: BASF AG

Inventor： KUMMER RUDOLF DR ,  VAGT UWE DR ,  FISCHER ROLF DR ,  SEUFERT WALTER DR ,  BECKER RAINER DR

IPC: C07C69/533 ,  C07C67/00 ,  C07C67/03 ,  C07C67/475 ,  C07C69/52 ,  B01J21/06 ,  B01J21/12 ,  B01J21/02

Abstract: Alkenecarboxylates of the formula I I where R1 is alkyl of 1 to 6 carbon atoms and n is 2, 3 or 4, are prepared by a process which comprises reacting a lactone of the formula II II where R2 is hydrogen or methyl and m is 1 or 2, with an alkanol of 1 to 6 carbon atoms in the presence of an acidic catalyst at from 150 DEG to 400 DEG C.

公开(公告)号：DE3602378A1

公开(公告)日：1987-07-30

申请号：DE3602378

申请日：1986-01-28

Applicant: BASF AG

Inventor： HUTMACHER HANS-MARTIN DR ,  BROECKER FRANZ JOSEF DR ,  MERGER FRANZ DR ,  FISCHER ROLF DR ,  VAGT UWE DR ,  SCHNEIDER HEINZ-WALTER DR ,  RICHTER WOLFGANG DR

IPC: C07B61/00 ,  B01J21/16 ,  B01J23/00 ,  B01J23/74 ,  B01J23/755 ,  B01J25/02 ,  C07C67/00 ,  C07C227/00 ,  C07C227/04 ,  C07C227/08 ,  C07C229/04 ,  C07C229/08 ,  C07C101/18 ,  C07C99/00 ,  B01J23/78

Abstract: In an improved process for the preparation of 6-aminocaproates by reacting a 5-formylvalerate with ammonia and hydrogen using an alkanol as a solvent in the presence of a hydrogenation catalyst at elevated temperatures and under superatmospheric pressure, the improvement comprises carrying out the reaction at from 40 DEG to 95 DEG C.

公开(公告)号：DE3602377A1

公开(公告)日：1987-07-30

申请号：DE3602377

申请日：1986-01-28

Applicant: BASF AG

Inventor： VAGT UWE DR ,  FISCHER ROLF DR ,  MERGER FRANZ DR ,  HUTMACHER HANS-MARTIN DR

IPC: C07D223/04 ,  C07D201/08

Abstract: epsilon -caprolactam is prepared by a process in which (a) a 5-formylvalerate is reacted with water in the presence of an acidic agent at from 30 DEG to 200 DEG C., (b) the 5-formylvaleric acid thus obtained is reacted with excess ammonia and hydrogen in the presence of a hydrogenation catalyst and of a solvent which is inert under the reaction conditions, at from 50 DEG to 150 DEG C. under superatmospheric pressure, and (c) after the ammonia has been separated off, the resulting solution of 6-aminocaproic acid is heated to 150 DEG -370 DEG C. and the caprolactam formed is isolated.