公开(公告)号：US3607874A

公开(公告)日：1971-09-21

申请号：US3607874D

申请日：1968-11-21

Applicant: BASF AG

Inventor： FUERST ERNST ,  TOUSSAINT HERBERT ,  SOLD GEORG

IPC: C07D295/023 ,  C07D51/66

CPC classification number: C07D295/023 ,  Y02P20/582

Abstract: Production of N-methylpiperazine by reaction of aqueous formaldehyde solution with piperazine followed by hydrogenation of the polymethylenepiperazine formed in the presence of known hydrogenation catalysts at superatmospheric pressure and elevated temperature, the reaction being carried out in the presence of acetic acid or piperazine acetate and the N,N''-dimethylpiperazine formed during the hydrogenation being distilled off as an azeotrope with water. N-methylpiperazine is used as a selective solvent for the extraction of aromatics from hydrocarbon mixtures.

公开(公告)号：US3903171A

公开(公告)日：1975-09-02

申请号：US11582771

申请日：1971-02-16

Applicant: BASF AG

Inventor： TOUSSAINT HERBERT ,  BOETTGER GUENTER ,  SCHUSTER LUDWIG

IPC: C07C45/62 ,  C07C47/02

CPC classification number: C07C45/62 ,  C07C47/02

Abstract: Improved process for the manufacture of 2-ethylhexan-1-al by hydrogenating 2-ethylhex-2-en-1-al at temperatures of from 80* to 160*C and at pressures of from 10 to 250 atmospheres in an irrigation zone in the presence of fixed-bed catalysts comprising platinum, palladium or ruthenium supported on carriers, the improvement comprising feeding crude 2-ethylhexan-1-al to the irrigation zone in an amount which is from 2 to 10 times the amount of freshly introduced 2-ethylhex-2-en-1-al.

Abstract translation: 通过在80°至160℃的温度和10至250大气压的压力下在灌溉区中氢化2-乙基己-2-烯-1-醇来改进2-乙基己烷-1-醇的制备方法 包含负载在载体上的铂，钯或钌的固定床催化剂的存在，其改进包括将2-乙基己烷-1-醛粗品加入到冲洗区中，其量为新鲜引入的2- 乙基己-2-烯-1-基。

公开(公告)号：US3558619A

公开(公告)日：1971-01-26

申请号：US3558619D

申请日：1968-08-27

Applicant: BASF AG

Inventor： HOFFMANN HERWIG ,  FUERST ERNST ,  TOUSSAINT HERBERT

IPC: C07D295/04 ,  C07D87/34

CPC classification number: C07D295/04

Abstract: PRODUCTION OF N-FORMYLMORPHOLINE OR N-ACETYLMORPHOLINE WHICH COMPRISES MIXING MORPHOLINE WITH FORMIC ACID OR ACETIC ACID AND DISTILLING OFF THE WATER FORMED FROM THE REACTION MIXTURE IN A COLUMN, A ZONE HAVING A TEMPERATURE OF FROM 130* TO 150*C. BEING MAINTAINED IN THE COLUMN ABOVE THE POINT OF SUPPLY AND A ZONE HAVING A TEMPERATURE OF FROM 210* TO 230*C. BEING MAINTAINED BELOW THE POINT OF SUPPLY. N-FORMYLMORPHOLINE AND NACETYLMORPHOLINE ARE SUITABLE AS EXTRACTANTS FOR AROMATIC HYDROCARBONS FROM HYDROCARBON MIXTURES.