期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 43, 页码 13387-13391出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201705514
关键词
annulation; C-H activation; fused-ring systems; pi-activation; ynamines
资金
- National Research Foundation of Korea (NRF) - Korean government [2016R1D1A1B03933754]
- NRF - Ministry of Education, Science and Technology (MEST) [2015M3A7B4070612]
- Posco TJ Park Foundation
- National Research Foundation of Korea [2016R1D1A1B03933754] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
N-Alkynylindoles were divergently cyclized for the synthesis of multifused N-heterocycles. An ortho-aryl palladium species was added to the position of an ynamine to generate (Z)-6-alkylidene/benzylidene-6H-isoindolo[2,1-a]indoles, while Pt-catalyzed beta-addition through pi-activation gave 5-alkyl/arylindolo[2,1-a]isoquinolines. Double cyclizations using PdCl2 and oxidant afforded bright yellow benzo[7,8]indolizino[2,3,4,5-ija]quinolines, the synthesis of which was also demonstrated in a different synthetic route.
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