期刊
TETRAHEDRON LETTERS
卷 42, 期 31, 页码 5275-5278出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(01)00965-0
关键词
coupling reactions; indoles; phenols; triflates
A novel and general synthesis of indoles has been established by utilizing 2-aminophenols as the starting materials. The key step is a modified Pd(0)-Cu(I)-catalyzed cross-coupling of 1-alkynes with 2-carboxamidoaryl triflates in the presence of n-Bu4NI as the additive. The 2-alkynylanilides obtained were subjected to an alkoxide-mediated cyclization to provide a number of indole containing compounds possessing substituents at the C2, C4, C5, and/or C6 position(s) in good overall yields. (C) 2001 Elsevier Science Ltd. All rights reserved.
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