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公开(公告)号：AT92483T
公开(公告)日：1993-08-15
申请号：AT89102212
申请日：1989-02-09
Applicant: HOECHST AG
Inventor： RIPPEL ROBERT DR , FLEMMING HANS-WOLFRAM , RUKWIED MANFRED DR
IPC: C07D333/36 , C07D333/38 , C07D333/48
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公开(公告)号：ES2075028T3
公开(公告)日：1995-10-01
申请号：ES89121277
申请日：1989-11-17
Applicant: HOECHST AG
Inventor： FLEMMING HANS-WOLFRAM DR , RUKWIED MANFRED DR , SCHMIDT MANFRED
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公开(公告)号：DE3804794A1
公开(公告)日：1989-08-24
申请号：DE3804794
申请日：1988-02-16
Applicant: HOECHST AG
Inventor： RIPPEL ROBERT DR , FLEMMING HANS-WOLFRAM DR , RUKWIED MANFRED DR
IPC: C07D333/36 , C07D333/38 , C07D333/48
Abstract: Thiophene derivatives with an optionally substituted amino group on the thiophene ring are prepared by dehydrogenation of dihydrothiophenes which are substituted in the same manner as the desired thiophene derivatives, using H2O2, the dihydrothiophenes being reacted in a first reaction step with H2O2 in neutral medium to give the corresponding sulphoxides, and, in the second reaction step, these are then rearranged with acid to give the thiophene derivatives. The dihydrothiophene-1-oxides which are formed in this process as intermediates are novel compounds. They, and equally the thiophene derivatives obtained from them by rearrangement with acid, are intermediates mainly in the crop protection agent sector and pharmaceutical sector.
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Patent Agency Ranking
公开(公告)号：DE58905083D1
公开(公告)日：1993-09-09
申请号：DE58905083
申请日：1989-02-09
Applicant: HOECHST AG
Inventor： RIPPEL ROBERT DR , FLEMMING HANS-WOLFRAM , RUKWIED MANFRED DR
IPC: C07D333/36 , C07D333/38 , C07D333/48
Abstract: Thiophene derivatives with an optionally substituted amino group on the thiophene ring are prepared by dehydrogenation of dihydrothiophenes which are substituted in the same manner as the desired thiophene derivatives, using H2O2, the dihydrothiophenes being reacted in a first reaction step with H2O2 in neutral medium to give the corresponding sulphoxides, and, in the second reaction step, these are then rearranged with acid to give the thiophene derivatives. The dihydrothiophene-1-oxides which are formed in this process as intermediates are novel compounds. They, and equally the thiophene derivatives obtained from them by rearrangement with acid, are intermediates mainly in the crop protection agent sector and pharmaceutical sector.
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公开(公告)号：DE58909308D1
公开(公告)日：1995-07-27
申请号：DE58909308
申请日：1989-11-17
Applicant: HOECHST AG
Inventor： FLEMMING HANS-WOLFRAM DR , RUKWIED MANFRED DR , SCHMIDT MANFRED
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公开(公告)号：AT124053T
公开(公告)日：1995-07-15
申请号：AT89121277
申请日：1989-11-17
Applicant: HOECHST AG
Inventor： FLEMMING HANS-WOLFRAM DR , RUKWIED MANFRED DR , SCHMIDT MANFRED
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公开(公告)号：ES2059585T3
公开(公告)日：1994-11-16
申请号：ES89102212
申请日：1989-02-09
Applicant: HOECHST AG
Inventor： RIPPEL ROBERT DR , FLEMMING HANS-WOLFRAM FLEMMING , RUKWIED MANFRED DR
IPC: C07D333/36 , C07D333/38 , C07D333/48
Abstract: Thiophene derivatives with an optionally substituted amino group on the thiophene ring are prepared by dehydrogenation of dihydrothiophenes which are substituted in the same manner as the desired thiophene derivatives, using H2O2, the dihydrothiophenes being reacted in a first reaction step with H2O2 in neutral medium to give the corresponding sulphoxides, and, in the second reaction step, these are then rearranged with acid to give the thiophene derivatives. The dihydrothiophene-1-oxides which are formed in this process as intermediates are novel compounds. They, and equally the thiophene derivatives obtained from them by rearrangement with acid, are intermediates mainly in the crop protection agent sector and pharmaceutical sector.
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