Pyridinyl Directed Alkenylation with Olefins via Rh(III)-Catalyzed C–C Bond Cleavage of Secondary Arylmethanols
作者:Hu Li、Yang Li、Xi-Sha Zhang、Kang Chen、Xin Wang、Zhang-Jie Shi
DOI:10.1021/ja205228y
日期:2011.10.5
Novel C-C bondcleavage of secondary alcohols through Rh(III)-catalyzed β-carbon elimination directed by a pyridinyl group is reported. A five-membered rhodacycle is proposed as a key intermediate, which undergoes further alkenylation with various olefins. This novel transformation shows high efficiency along with excellent selectivity in mild conditions. A wide range of functionalities are compatible
报道了仲醇通过由吡啶基团引导的 Rh(III) 催化的 β-碳消除来裂解仲醇的新型 CC 键。五元罗达环被提议作为关键中间体,它与各种烯烃进行进一步的烯基化。这种新型转化在温和条件下显示出高效率和出色的选择性。兼容多种功能。本研究提供了一种新的策略来进行 CC 键活化。
Rhodium-Catalyzed Decarbonylative Direct Olefination of Arenes with Vinyl Carboxylic Acids
作者:Ruiying Qiu、Lingjuan Zhang、Conghui Xu、Yixiao Pan、Hongze Pang、Lijin Xu、Huanrong Li
DOI:10.1002/adsc.201401020
日期:2015.4.13
A rhodium(I)‐catalyzed direct CH bond olefination of pyridyl‐substituted arenes with readily available vinyl carboxylic acids has been realized. This reaction occurred efficiently without the need for any external oxidant, affording the ortho‐olefinated products in high yields and excellent regioselectivities. Diversely substituted vinyl carboxylic acids behaved as efficient olefination reagents under