Metal-Free Radical Annulation of Oxygen-Containing 1,7-Enynes: Configuration-Selective Synthesis of (<i>E</i>)-3-((Arylsulfonyl)methyl)-4-Substituted Arylidenechromene Derivatives
作者:Kaimin Mao、Mouwang Bian、Lei Dai、Jinghang Zhang、Qiuyu Yu、Chang Wang、Liangce Rong
DOI:10.1021/acs.orglett.0c03946
日期:2021.1.1
A novel strategy for the synthesis of (E)-3-((arylsulfonyl)methyl)-4-substituted benzylidenechromene derivatives via a metal-free radical annulation reaction of oxygen-containing 1,7-enynes with thiosulfonates has been developed. The reaction shows broad substrate scope, wide functional group tolerance, and moderate to excellent yields. Moreover, thiosulfonates were well driven to achieve the bifunctionalization
PdCl2-catalyzed cross-coupling reaction of arylacetylene iodides with arylboronic acids to diarylacetylenes
作者:Yu Shi、Xiaoyu Li、Jianhui Liu、Wenfeng Jiang、Licheng Sun
DOI:10.1016/j.tetlet.2010.05.011
日期:2010.7
Anew Suzuki-type cross-coupling reaction between 1-iodo-2-arylalkynes and arylboronic acids to afford a wide variety of functionalized diarylacetylenes in a mild reaction condition was developed. The reaction was catalyzed by a small amount of a structurally simple, commercially available, and stable PdCl2. This unique sp-sp(2) carbon-carbon bond formation provides a new protocol for the synthesis of diarylacetylenes, which is a new addition to the Suzuki cross-coupling reaction. (C) 2010 Elsevier Ltd. All rights reserved.
You, Xiu L.; Xu, Lai; Hu, Tao, Letters in Organic Chemistry, 2012, vol. 9, # 4, p. 300 - 304
作者:You, Xiu L.、Xu, Lai、Hu, Tao
DOI:——
日期:——
2-Substituted-3-allenyl-benzo[b]furans through the palladium-catalysed cyclization of propargylic o-(alkynyl)phenyl ethers
作者:Sandro Cacchi、Giancarlo Fabrizi、Leonardo Moro
DOI:10.1016/s0040-4039(98)00936-8
日期:1998.7
The reaction of propargylic o-(alkynyl)phenyl ethers in the presence of' Pd(PPh3)(4) and K2CO3 affords 2-substituted-3-allenylbenzo [b] furans in good yields. Depending on the nature of the starting alkyne, variable amounts of isomeric 2-substituted-3-propargylbenzo[b]furans have bren isolated. (C) 1998 Elsevier Science Ltd. All rights reserved.