Teaching an old carbocation new tricks: Intermolecular C-H insertion reactions of vinyl cations.
Teaching an old carbocation new tricks: Intermolecular C-H insertion reactions of vinyl cations.
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教老碳正离子新技巧:乙烯基阳离子的分子间C-H插入反应
DOI:
10.1126/science.aat5440
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发表时间:
2018-07-27
期刊:
影响因子:
--
通讯作者:
Nelson HM
中科院分区:
文献类型:
--
作者:
Popov S;Shao B;Bagdasarian AL;Benton TR;Zou L;Yang Z;Houk KN;Nelson HM
Vinyl carbocations have been the subject of extensive experimental and theoretical studies over the past five decades. Despite this long history in chemistry, the utility of vinyl cations in chemical synthesis has been limited, with most reactivity studies focusing on solvolysis reactions or intramolecular processes. Here we report synthetic and mechanistic studies of vinyl cations generated through silylium–weakly coordinating anion catalysis. We find that these reactive intermediates undergo mild intermolecular carbon-carbon bond–forming reactions, including carbon-hydrogen (C–H) insertion into unactivated sp3 C–H bonds and reductive Friedel-Crafts reactions with arenes. Moreover, we conducted computational studies of these alkane C–H functionalization reactions and discovered that they proceed through nonclassical, ambimodal transition structures. This reaction manifold provides a framework for the catalytic functionalization of hydrocarbons using simple ketone derivatives.
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影响因子:
15
作者:
OKUYAMA, T;TAKINO, T;OCHIAI, M
通讯作者:
OCHIAI, M
DOI:
10.1002/cber.19721051206
发表时间:
1972-01-01
期刊:
CHEMISCHE BERICHTE-RECUEIL
影响因子:
--
作者:
LAMPARTER, E;HANACK, M
通讯作者:
HANACK, M
影响因子:
4.4
作者:
CURTISS, LA;POPLE, JA
通讯作者:
POPLE, JA
影响因子:
2.1
作者:
HARGROVE, RJ;STANG, PJ
通讯作者:
STANG, PJ
DOI:
10.1002/anie.197803331
发表时间:
1978-01-01
期刊:
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH
影响因子:
--
作者:
HANACK, M
通讯作者:
HANACK, M