公开(公告)号：DE2346309A1

公开(公告)日：1975-04-03

申请号：DE2346309

申请日：1973-09-14

Applicant: BASF AG

Inventor： DATOW JOACHIM DIPL ING DR ,  WINDERL SIEGFRIED DIPL CHEM DR ,  MERKEL KARL DR ,  TOUSSAINT HERBERT DIPL CHEM DR ,  PAETSCH JUERGEN DIPL CHEM DR ,  HOFFMANN HERWIG DIPL CHEM DR

IPC: C07C69/96 ,  C07C68/02

公开(公告)号：DE2251206A1

公开(公告)日：1974-05-09

申请号：DE2251206

申请日：1972-10-19

Applicant: BASF AG

Inventor： MERKEL KARL DR ,  DATOW JOACHIM DR ,  PAETSCH JUERGEN DR ,  TOUSSAINT HERBERT DR ,  HOFFMANN HERWIG DR ,  WINDERL SIEGFRIED DR

IPC: C07C69/96 ,  C07C20060101 ,  C07C68/00 ,  C07C68/02 ,  C07C69/00

Abstract: A process for the continuous production of esters of chloroformic acid from an alcohol, particularly a polyhydric alcohol, and phosgene, the process being carried out in an excess of phosgene and the alcohol being mixed in within a particularly short period of time.

公开(公告)号：DE2201433A1

公开(公告)日：1973-07-19

申请号：DE2201433

申请日：1972-01-13

Applicant: BASF AG

Inventor： MERKEL KARL DR ,  DATOW JOACHIM DR ,  PAETSCH JUERGEN DR ,  HOFFMANN HERWIG DR

IPC: C07C20060101 ,  C07C68/08 ,  C07C69/62

公开(公告)号：DE1770832A1

公开(公告)日：1972-01-20

申请号：DE1770832

申请日：1968-07-10

Applicant: BASF AG

Inventor： HOFFMANN HERWIG DR ,  LISSNER OSKAR DIPL-ING ,  MERKEL KARL DR ,  SCHOLZ HEINRICH DR

IPC: C08G59/56 ,  C08G30/14

公开(公告)号：DE1962285A1

公开(公告)日：1971-06-24

申请号：DE1962285

申请日：1969-12-12

Applicant: BASF AG

Inventor： ADAM KARL DR ,  HOFFMANN HERWIG DR ,  MERKEL KARL DR

IPC: A01G5/02

Abstract: Ethylenediamine containing water is dehydrated by distillation in the presence of hexamethyleneimine as an azeotrope-forming substance.

公开(公告)号：DE1955558A1

公开(公告)日：1971-05-19

申请号：DE1955558

申请日：1969-11-05

Applicant: BASF AG

Inventor： ADAM KARL DR ,  FUERST ERNST DR ,  HOFFMANN HERWIG DR ,  MERKEL KARL DR

IPC: C07D295/088

Abstract: N-hydroxyalkyl-piperazines are purified by a hydrogenation treatment e.g. with hydrogen using a Co/Mn/Na2CO3 on pumice catalyst. The product may be used in pharmaceuticals.

公开(公告)号：CH501583A

公开(公告)日：1971-01-15

申请号：CH1190269

申请日：1969-08-05

Applicant: BASF AG

Inventor： MERKEL KARL DR ,  WENNER GOTTHILF DR

IPC: C08G2/00 ,  C07C87/50

公开(公告)号：DE872205C

公开(公告)日：1953-03-30

申请号：DEB0007570

申请日：1941-11-19

Applicant: BASF AG

Inventor： REPPE WALTER DR ,  HECHT OTTO DR ,  MERKEL KARL DR ,  REINDL EUGEN DR

IPC: C07C51/14 ,  C07C67/38 ,  C07C69/54

公开(公告)号：DE2950155A1

公开(公告)日：1981-07-02

申请号：DE2950155

申请日：1979-12-13

Applicant: BASF AG

Inventor： DECKER MARTIN DIPL CHEM DR ,  MERKEL KARL DR ,  NEUMAYR FRANZ DIPL CHEM DR

IPC: C07C51/60 ,  C07C53/42

公开(公告)号：DE2545659A1

公开(公告)日：1977-04-21

申请号：DE2545659

申请日：1975-10-11

Applicant: BASF AG

Inventor： HOFFMANN HERWIG DIPL CHEM DR ,  MERKEL KARL DR ,  MUELLER HERBERT DIPL CHEM DR ,  NEUMAYR FRANZ DIPL CHEM DR

IPC: C07C17/363 ,  C07C19/02

Abstract: Prodn. of alkyl chlorides comprises decarboxylating alkyl chloroformates at 80-200 degrees C (pref. 110-140 degrees C) in an aprotic solvent. The solvent is pref. an amide, esp. an N-alkylated cyclic amide of formula (I): (where x = 2-12; R = 1-18C alkyl). The prefd. cpd. (I) is N-methylpyrrolidone. The starting material can be a chloroformate derived from a 1-30C alkanol or a 2-30 di- or polyhydric alcohol. Process gives high yields (e.g. 97-98%) of high purity prods. without the use of catalysts. In an example, MeCl is prepd. continuously in 98% yield by pumping methyl chloroformate into a pressurised reactor contg. N-methylpyrrolidone at 120-130 degrees C.