公开(公告)号：JP2001278858A

公开(公告)日：2001-10-10

申请号：JP2001028837

申请日：2001-02-05

Applicant: BASF AG

Inventor： OHLBACH FRANK ,  MELDER JOHANN-PETER DR ,  ROSS KARL-HEINZ DR ,  RUDLOFF MARTIN ,  LIEBE JOERG

IPC: C07B61/00 ,  C07D207/26 ,  C07D207/267

Abstract: PROBLEM TO BE SOLVED: To provide a technically simple method effectively, selectively and economically producing N-methyl-2-pyrrolidone(NMP) in high space-time yield (based on γ-butyrolactone) (γ-BL) from ammonia, methanol and γ-BL. SOLUTION: This method produces NMP in two steps, reacting ammonia with methanol in the presence of a catalyst at a high temperature to produce a mixture including monomethylamine, dimethylamine, trimethylamine and ammonia, separating ammonia in a first step and then reacting the mixture including methylamine with γ-BL in a molar ratio of monomethylamine/γ-BL >=1 at a high temperature and an overpressure, separating NMP and unreacted methylamine from the reaction product and returning the unreacted methylamine to the first step to react with methanol and ammonia.

公开(公告)号：CA1337819C

公开(公告)日：1995-12-26

申请号：CA569263

申请日：1988-06-10

Applicant: BASF AG

Inventor： MERGER FRANZ ,  LIEBE JOERG ,  BERTLEFF WERNER

IPC: C07B35/06 ,  C07B31/00 ,  C07B47/00 ,  C07B61/00 ,  C07C45/00 ,  C07C45/61 ,  C07C45/66 ,  C07C49/647 ,  C07C57/13 ,  C07C67/00 ,  C07C67/317 ,  C07C67/327 ,  C07C67/42 ,  C07C69/533 ,  C07C69/54 ,  C07C69/593 ,  C07C231/00 ,  C07C233/47 ,  C07C253/00 ,  C07C255/07 ,  C07C255/31 ,  C07C255/34 ,  C07D307/33 ,  C07C255/08

Abstract: 1,1-disubstituted ethylene compounds of the general formula I I where Z is COOR2, CN or COR3, R1 is an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical which may be further substituted by functional groups which are inert under the reaction conditions, R2 is an aliphatic, cycloaliphatic or araliphatic radical of 1 to 15 carbon atoms and R3 is an aliphatic, cycloaliphatic or araliphatic radical of 1 to 15 carbon atoms which may be substituted by groups which are inert under the reaction conditions, and R1 together with R2 or R1 together with R3 may furthermore form an alkylene chain of 2 to 10 carbon atoms which may be substituted by groups which are inert under the reaction conditions, are prepared from a formyl compound of the general formula II II where Z, R1, R2 and R3 have the above meanings, by a process in which the reaction is carried out in the presence of formaldehyde or paraformaldehyde and a) a C1-C12-alkanol or b) a mixture of a C1-C12-alkanol and water or c) with water in the presence of a secondary amine and a protic acid at from 0 to 200.degree.C.

公开(公告)号：DE10004909A1

公开(公告)日：2001-08-09

申请号：DE10004909

申请日：2000-02-04

Applicant: BASF AG

Inventor： OHLBACH FRANK ,  MELDER JOHANN-PETER ,  ROS KARL-HEINZ ,  RUDLOFF MARTIN ,  LIEBE JOERG

IPC: C07B61/00 ,  C07D207/26 ,  C07D207/267

Abstract: N-Methyl-2-pyrrolidone (NMP) is prepared by preparing a mixture comprising monomethylamine, dimethylamine and trimethylamine and ammonia in a first process step by reacting ammonia with methanol at elevated temperature in the presence of a catalyst, separating 10 off the ammonia, reacting the mixture comprising the methylamines with gamma-butyrolactone (gamma-BL), in a molar ratio of monomethylamine to gamma-BL of at least 1 in a second process step at elevated temperature and superatmospheric pressure, separating NMP and unreacted methylamines from the reaction product and returning unreacted methylamines to the first process step for reaction with methanol and ammonia.