Alkylation of Nonacidic C(sp<sup>3</sup>)–H Bonds by Photoinduced Catalytic Michael-Type Radical Addition
作者:Shin Kamijo、Go Takao、Kaori Kamijo、Teruo Tsuno、Katsuya Ishiguro、Toshihiro Murafuji
DOI:10.1021/acs.orglett.6b02391
日期:2016.10.7
Photoinduced catalytic Michael-type radical addition was achieved via olefin insertion into a nonacidic C(sp3)–H bond, utilizing 2-chloroanthraquinone as a C–H bond-cleaving catalyst and 1,1-bis(phenylsulfonyl)ethylene as an olefinic substrate. The present radical protocol allows carbon chain extension stemming from nonacidic C–H bonds, which complements alkylation at acidic C–H bonds under ionic conditions
通过将烯烃插入非酸性的C(sp 3)-H键中来实现光诱导的Michael型自由基加成反应,利用2-氯蒽醌作为C-H键裂解催化剂,并使用1,1-双(苯磺酰基)乙烯作为烯烃基质。目前的自由基方案允许源自非酸性CH键的碳链延伸,这可补充离子条件下酸性CH键的烷基化作用,并安装了活性次甲基位点,可作为进一步转化的通用合成方法。