Palladium-catalyzed amination and cyclization to heteroannellated indoles and carbazoles

TETRAHEDRON

卷:59

Article

Ferreira, ICFR ; Queiroz, MJRP ; Kirsch, G

关键词: palladium;    amination;    ortho-bromodiarylamines;    cyclization;    thienocarbazoles;    indolobenzo[b]thiophenes;   

DOI  :  10.1016/S0040-4020(03)00552-0

来源: Elsevier

【 摘 要 】

New ortho-bromodiarylamines in the benzo[b]thiophene series were prepared by palladium-catalyzed amination, either in the benzene or in the thiophene ring. These were submitted to palladium-catalyzed cyclization, under different required conditions, to give several differently substituted thieno[3,2-c] or [2,3-b]carbazoles and indolo[3,2-b]benzo[b]thiophenes. This constitutes a novel synthetic route to both tetracyclic systems. (C) 2003 Elsevier Science Ltd. All rights reserved.

【 授权许可】

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