Photochemically Induced Intramolecular Radical Cyclization Reactions with Imines
Photochemically Induced Intramolecular Radical Cyclization Reactions with Imines
复制标题
光化学诱导的亚胺分子内自由基环化反应
DOI:
10.1021/acs.joc.7b02810
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Hoffmann Norbert
中科院分区:
文献类型:
--
作者:
Lefebvre Corentin;Michelin Clment;Martzel Thomas;Djou’ou Mvondo Vaneck;Bulach Vronique;Abe Manabu;Hoffmann Norbert
The photochemically induced intramolecular hydrogen abstraction or hydrogen atom transfer in cyclic imines8a,bfollowed by a cyclization is investigated. Two types of products are observed, one resulting from the formation of a C–C bond, the other from the formation of a C–N bond. A computational study reveals that hydrogen is exclusively transferred to the imine nitrogen leading to a triplet diradical intermediate. After intersystem crossing, the resulting zwitterionic intermediate undergoes cyclization leading to the final product.