公开(公告)号：AT296285T

公开(公告)日：2005-06-15

申请号：AT01101420

申请日：2001-01-23

Applicant: BASF AG

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

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.

公开(公告)号：DE19704615A1

公开(公告)日：1998-08-13

申请号：DE19704615

申请日：1997-02-07

Applicant: BASF AG

Inventor： FUCHS EBERHARD DR ,  OHLBACH FRANK DR

IPC: B01J23/44 ,  C07C209/52 ,  C07C209/70 ,  C07C209/84 ,  C07C211/12 ,  C07D295/02 ,  C07D295/023

Abstract: The invention relates to a method for hydrogenating a compound from the group of imines or enamines (I) to an amine (II) in the presence of a nitrile (III), whereby said nitrile (III) is essentially not hydrogenated. The method is characterized in that a mixture containing a compound (I) and a nitrile (III) is reacted in the presence of a catalyst (IV) with a gas containing molecular hydrogen.