三氟甲基化
化学
戒指(化学)
光化学
光催化
离子键合
催化作用
烷基
苯乙烯
极地的
组合化学
高分子化学
有机化学
光催化
三氟甲基
离子
聚合物
物理
共聚物
天文
作者
Basudev Sahoo,Junlong Li,Frank Glorius
标识
DOI:10.1002/anie.201503210
摘要
A visible-light-mediated photoredox-catalyzed semipinacol-type rearrangement proceeding via 1,2 alkyl migration was developed. In this transformation, trifluoromethylation of the C=C bond of α-(1-hydroxycycloalkyl)-substituted styrene derivatives is followed by ring expansion of the 1-hydroxycycloalkyl group to deliver novel cycloalkanones with all-carbon quaternary centers. The reaction proceeds via a radical-polar mechanism, with trifluoromethylation (radical) and ring expansion (ionic) occurring in the same transformation.
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