Regioselectivity-Switchable Hydroarylation of Styrenes
作者:Ke Gao、Naohiko Yoshikai
DOI:10.1021/ja108809u
日期:2011.1.26
Cobalt-phosphine and cobalt-carbene catalysts have been developed for the hydroarylation of styrenes via chelation-assisted C-H bond activation, to afford branched and linear addition products, respectively, in a highly regioselective fashion. Deuterium-labeling experiments suggested a mechanism involving reversible C-H bond cleavage and olefin insertion steps and reductive elimination as the rate-
Cobalt-Catalyzed Direct C(sp<sup>2</sup>
)-H Alkylation with Unactivated Alkenes
作者:Ye Lim Kim、Sun-a Park、Ju Hyun Kim
DOI:10.1002/ejoc.202000565
日期:2020.7.15
An efficient Cp*CoIII‐catalyzed direct C(sp2)–H bond alkylation with unactivated alkenes was developed, affording mono‐diarylethane products with high linear selectivity. This reaction provided a simple, practical, and atom‐economical way to construct phenethyl groups on sp2 carbon. A wide range of arenes, styrenes, and alkyl arenes were well tolerated under mild reaction conditions and showed high
开发了一种有效的Cp * Co III催化的具有未活化烯烃的直接C(sp 2)-H键烷基化反应,从而提供具有高线性选择性的单二芳基乙烷产品。该反应为在sp 2碳上构建苯乙基提供了一种简单,实用且原子经济的方法。各种芳烃,苯乙烯和烷基芳烃在温和的反应条件下均具有良好的耐受性,并具有很高的官能团相容性。