Reactions catalyzed by a binuclear copper complex: selective oxidation of alkenes to carbonyls with O<sub>2</sub>
作者:Yuxia Liu、Dong Xue、Chaoqun Li、Jianliang Xiao、Chao Wang
DOI:10.1039/c7cy01757j
日期:——
Terminal alkenes were selectivitely cleavaged into ketones and aldehydes catalysed by a binuclear copper catalyst bearing simple salicylate ligand with O2 as oxidant. The reaction was carried out under an atmosphere of O2 balloon with 0.5 mol% of catalyst and could be performed at a gram scale, providing a convenient and practical method for the cleavage of terminal alkenes into carbonyl compounds
Pd-catalyzed oxidative cross-coupling of N-tosylhydrazones with arylboronic acids
作者:Xia Zhao、Jing Jing、Kui Lu、Yan Zhang、Jianbo Wang
DOI:10.1039/b925590g
日期:——
The Pd-catalyzed reaction of N-tosylhydrazones and arylboronic acids provides olefin derivatives. This oxidative cross-coupling is suggested to proceed through a migratory insertion process of a Pd carbene intermediate.
Visible-Light-Enabled Oxidative Coupling of Alkenes with Dialkylformamides To Access Unsaturated Amides
作者:Maojian Lu、Zhaowei Lin、Shanyi Chen、Hongyou Chen、Mingqiang Huang、Shunyou Cai
DOI:10.1021/acs.orglett.9b03870
日期:2019.12.20
A practical and direct method for oxidative cross-coupling of alkenes with dialkylformamides is established employing visible-light-enabled photoredox catalysis. This strategy allows efficient access to diverse unsaturated amides under mild reaction conditions. The application of an appropriate diaryliodonium salt was demonstrated to be critical to the success of this process. This catalyst system
bromides from the corresponding 1,1-diarylethylenes. This protocol not only provides a convenient and straightforward strategy for the rapid construction of various 2,2-diarylvinyl bromides without bromine and extra oxidants, but also can improve the atom economy of Kornblum oxidative reaction.