Oxidant-Free Rh(III)-Catalyzed Direct C–H Olefination of Arenes with Allyl Acetates
摘要:
Rh(III)-catalyzed direct olefination of arenes with allyl acetate via C-H bond activation is described using N,N-disubstituted aminocarbonyl as the directing group. The catalyst undergoes a redox neutral process, and high to excellent yields of trans-products are obtained. This protocol exhibits a wide spectrum of functionality compatibility because of the simple reaction conditions employed and provides a highly effective synthetic method in the realm of C-H olefination.
Pincer Thioamide and Pincer Thioimide Palladium Complexes Catalyze Highly Efficient Negishi Coupling of Primary and Secondary Alkyl Zinc Reagents at Room Temperature
作者:Haibo Wang、Jing Liu、Yi Deng、Tianyin Min、Ganxiang Yu、Xiaojun Wu、Zhen Yang、Aiwen Lei
DOI:10.1002/chem.200801860
日期:2009.1.26
structures of complexes 2 and 3 were confirmed by X‐ray analysis. Both complexes are efficient catalysts for Negishicouplings involving primary and secondary alkyl zinc reagents bearing β‐hydrogen atoms. At a concentration of 0.1–0.5 mol % both catalysts readily promoted reactions at roomtemperature or even at 0 °C. The operational simplicity of these processes, in conjunction with the easy accessibility
Oxidant-Free Rh(III)-Catalyzed Direct C–H Olefination of Arenes with Allyl Acetates
作者:Chao Feng、Daming Feng、Teck-Peng Loh
DOI:10.1021/ol4015442
日期:2013.7.19
Rh(III)-catalyzed direct olefination of arenes with allyl acetate via C-H bond activation is described using N,N-disubstituted aminocarbonyl as the directing group. The catalyst undergoes a redox neutral process, and high to excellent yields of trans-products are obtained. This protocol exhibits a wide spectrum of functionality compatibility because of the simple reaction conditions employed and provides a highly effective synthetic method in the realm of C-H olefination.