公开(公告)号：CA1048540A

公开(公告)日：1979-02-13

申请号：CA227256

申请日：1975-05-13

Applicant: HOECHST AG

Inventor： MEIDERT HELMUT ,  MUELLER WERNER H

IPC: C07C255/17 ,  C07C67/00 ,  C07C253/00 ,  C07C120/00 ,  C07C121/76

Abstract: 4-CHLORO-5-OXO-HEXANOIC ACID NITRILE, 6-CHLORO-5-OXO-HEXANOIC ACID NITRILE AND PROCESS FOR THEIR MANUFACTURE of the disclosure: The compounds 4-chloro-5-oxo-hexanoic acid nitrile and 6-chloro-5-oxo-hexanoic acid nitrile are prepared by chlorinating 5-oxo-hexanoic acid nitrile in an aqueous 20 to 40% solution at temperatures of from 25 to 55.degree.C, separating the precipitating oily second phase and submitting it to distillation. Said compounds are valuable starting products for preparing ?- or .epsilon. -amino acids and important synthesis products for preparing heterocyclic compounds.

公开(公告)号：HUT44777A

公开(公告)日：1988-04-28

申请号：HU406286

申请日：1986-09-24

Applicant: HOECHST AG

Inventor： MEIDERT HELMUT ,  MACK KARL-ERNST ,  LITTERER HEINZ

IPC: C07D333/38

公开(公告)号：CA952542A

公开(公告)日：1974-08-06

申请号：CA73417

申请日：1970-01-29

Applicant: HOECHST AG

Inventor： HOERNIG LOTHAR H ,  KREKELER HANS ,  MEIDERT HELMUT ,  RIEMENSCHNEIDER WILHELM

IPC: C07C19/041 ,  C07C17/00 ,  C07C17/361 ,  C07C67/00

Abstract: In the process for the manufacture of carbon tetrachloride from benzene, mixtures of benzene and chlorinated aliphatic or aromatic compounds, or chlorinated aromatic compounds, with chlorine in an excess amount of up to 300 percent, in the absence of catalysts in the gaseous phase in two reaction stages at a temperature in the first stage of from 6 DEG to 400 DEG C. and in the second stage of from 400 DEG to 800 DEG C. the space-time-yield is considerably increased by operating in both reaction stages under a pressure in the range of from 200 to 700 atmospheres. The reaction is carried out in a corrosion resistant reactor in continuous manner using 0.2 to 4 moles of organic compound or compounds per liter of reaction space per second.

公开(公告)号：CA949983A

公开(公告)日：1974-06-25

申请号：CA39748

申请日：1969-01-10

Applicant: HOECHST AG

Inventor： HOERNIG LOTHAR ,  MEIDERT HELMUT ,  RIEMENSCHNEIDER WILHELM

IPC: C07C17/361

公开(公告)号：CA1129863A

公开(公告)日：1982-08-17

申请号：CA335700

申请日：1979-09-14

Applicant: HOECHST AG

Inventor： MEIDERT HELMUT ,  MULLER WERNER H ,  PRESSLER WILFRIED

IPC: C07D215/18 ,  C07D215/22 ,  C07D215/227 ,  C07D215/40 ,  C09B29/08 ,  C09B29/44

Abstract: 8-Chloro-5,6,7,8-tetrahydro-2-quinolone and 8-bromo-5,6,7,8-tetrahydro-2-quinolone, the hydrochloride or hydrobromide thereof and their manufacture by reacting 3,4,5,6,7,8-hexahydro-2-quinolone with chlorine or bromine in an inert solvent at 10 to 50.degree. C with heating of the reaction mixture to 60 to 80.degree. C after the halogen addition. The compounds of the invention may be used in the preparation of dyestuffs for polyesters.

公开(公告)号：CA953738A

公开(公告)日：1974-08-27

申请号：CA73416

申请日：1970-01-29

Applicant: HOECHST AG

Inventor： HORNIG LOTHAR H ,  RIEMENSCHNEIDER WILHELM ,  MEIDERT HELMUT ,  KREKELER HANS

IPC: C07C19/041 ,  C07C17/00 ,  C07C17/361 ,  C07C67/00

Abstract: Process for the continuous manufacture of carbon tetrachloride from benzene or mixtures of benzene with chloro-substituted aromatic or aliphatic hydrocarbons and chlorine wherein the chlorination is first carried out in the liquid phase in a reaction zone containing hexachlorobenzene and then continued in a second reaction zone in the gaseous phase.

公开(公告)号：CA831058A

公开(公告)日：1969-12-30

申请号：CA831058D

Applicant: HOECHST AG

Inventor： HORNIG LOTHAR ,  RIEMENSCHNEIDER WILHELM ,  MEIDERT HELMUT ,  KREKELER HANS