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公开(公告)号：DE2964310D1
公开(公告)日：1983-01-20
申请号：DE2964310
申请日：1979-11-13
Applicant: HOECHST AG
Inventor： LANDAUER FRANZ , SCHAEFFER GEORG
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公开(公告)号：CA1133939A
公开(公告)日：1982-10-19
申请号：CA339937
申请日：1979-11-15
Applicant: HOECHST AG
Inventor： LANDAUER FRANZ , SCHAEFFER GEORG
IPC: C07C22/04 , C07C25/02 , C07C25/13 , C07C45/43 , C07C45/80 , C07C45/85 , C07C47/542 , C07C47/55 , C07C63/06
Abstract: p-tert.Butylbenzaldehyde and the derivatives thereof halogen-substituted at the nucleus are prepared by bromination of p-tert.butyltoluene and the derivatives thereof halogen-substituted at the nucleus under side chain halogenation conditions until the benzal bromine is obtained which is then saponified. Practically no indesired bromination at the nuclear or the tert.butyl group takes place. The products obtained are valued intermediates for the manufacture of pharmaceutical agents. plant protecting agents and dyestuffs.
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公开(公告)号：AU5281079A
公开(公告)日：1980-05-22
申请号：AU5281079
申请日：1979-11-14
Applicant: HOECHST AG
Inventor： LANDAUER FRANZ , SCHAEFFER GEORG
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公开(公告)号：CA1067101A
公开(公告)日：1979-11-27
申请号：CA256028
申请日：1976-06-30
Applicant: HOECHST AG
Inventor： LADEMANN RUDOLF , LANDAUER FRANZ , LENZMANN HEINRICH , SCHMIEDEL KLAUS , SCHWIERSCH WOLFRAM
Abstract: Continuous preparation of mono- or di-(trichloromethy)-benzenes or of mono- or di-(trichloromethyl)-benzenes substituted in the benzene ring by halogen a?oms from the corresponding mono- or dimethylbenzenes and chlorine in several steps with radiation by means of rays of high energy, by reacting mono- or dimethylbenzene with chlorine in 4 to 14 steps, at a temperature in the range of from 20 to 130.degree.C, whereby chlorine is introduced into the second step and the following steps, the resulting waste gas is introduced into step 1 and chlorine contained in the waste gas is reacted in reactor 1 with fresh mono- and dimethylbenzene. A preferred embodiment for carrying out the process is the reaction in a reactor arrangement in cascade form, wherein the number of steps corresponds to the number of reactors and wherein as reactors circulation reactors are used. The mono- and di-(trichloromethyl)-benzenes are valuable intermediates for the preparation of pesticides, textile auxiliaries and dyestuffs.
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公开(公告)号：CA1051028A
公开(公告)日：1979-03-20
申请号：CA224270
申请日：1975-04-10
Applicant: HOECHST AG
Inventor： LANDAUER FRANZ
IPC: C07C257/10 , C07C20060101 , C07C67/00 , C07C239/00 , C07C313/00 , C07C315/04 , C07C317/36 , C07C123/00
Abstract: PROCESS FOR THE PREPARATION OF N-(CHLOROARYL)-N',N'- DIALKYLAMIDINES of the disclosure: A process for the preparation of N-(chloroaryl)-N',N'-dialkylamidines in which N-aryl-N',N'-dialkylamidines in the form of their salts are directly chlorinated in halogenated hydrocarbons at 15 - 80.degree.C. from the hydrochloride salts thus obtained the free amidines are set free with alkaline agents. The N-(chloroaryl)-N',N'-dialkylamidines are valuable intermediates for the preparation of dyestuffs and insecticides.
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Patent Agency Ranking
公开(公告)号：CA797918A
公开(公告)日：1968-10-29
申请号：CA797918D
Applicant: HOECHST AG
Inventor： LANDAUER FRANZ , BEERMANN CLAUS , SCHMIDT ERWIN
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公开(公告)号：CA695423A
公开(公告)日：1964-10-06
申请号：CA695423D
Applicant: HOECHST AG
Inventor： LANDAUER FRANZ , ORTHNER LUDWIG , HERZBERG HORST
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公开(公告)号：CA645436A
公开(公告)日：1962-07-24
申请号：CA645436D
Applicant: HOECHST AG
Inventor： ORTHNER LUDWIG , LANDAUER FRANZ , REUTER MARTIN , HERZBERG HORST
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公开(公告)号：HU197869B
公开(公告)日：1989-06-28
申请号：HU235385
申请日：1985-06-14
Applicant: HOECHST AG
Inventor： LANDAUER FRANZ
IPC: C07C51/363 , C07C53/19
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公开(公告)号：AU574473B2
公开(公告)日：1988-07-07
申请号：AU4380285
申请日：1985-06-18
Applicant: HOECHST AG
Inventor： LANDAUER FRANZ
IPC: C07C51/363 , C07C53/19
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