Liquid-crystalline solvents as mechanistic probes. 21. Control of Norrish II 1,4-biradical reactivity by the phase and molecular dimensions of an ordered solvent
Liquid-crystalline solvents as mechanistic probes. 21. Control of Norrish II 1,4-biradical reactivity by the phase and molecular dimensions of an ordered solvent
Nickel-Catalyzed Reductive Coupling of γ-Metalated Ketones with Unactivated Alkyl Bromides
作者:Ning Cui、Tingzhi Lin、Yan-En Wang、Jian Wu、Yuheng Han、Xinyang Xu、Fei Xue、Dan Xiong、Patrick J. Walsh、Jianyou Mao
DOI:10.1021/acs.orglett.2c01390
日期:2022.6.10
A nickel-catalyzed reductive cross-coupling reaction of aryl cyclopropyl ketones with easily accessible unactivated alkylbromides to access aryl alkyl ketones has been developed. This strategy facilitates access to various of γ-alkyl-substituted ketones via ring opening of cyclopropyl ketones (26 examples, 50–90% yield). Initial mechanistic studies revealed that the reaction proceeds via radical cleavage
Liquid-crystalline solvents as mechanistic probes. 21. Control of Norrish II 1,4-biradical reactivity by the phase and molecular dimensions of an ordered solvent
作者:Richard G. Zimmermann、Jerry H. Liu、Richard G. Weiss