N-Iodosuccinimide-Initiated Spirocyclopropanation of Styrenes with 1,3-Dicarbonyl Compound for the Synthesis of Spirocyclopropanes
2016
Qian, Ping | Du, Bingnan | Song, Ruichun | Wu, Xiaodong | Mei, Haibo | Han, Jianlin | Pan, Yi
Herein is reported an N-iodosuccinimide-initiated spirocyclopropanation reaction of styrenes with 1,3-dicarbonyl compounds in the presence of white LED light. The reaction proceeds via two C–H and two C–I bond cleavage event, along with two C–C bond formation event, and formation of quaternary centers. These reactions could be carried out at room temperature and tolerated a wide range of substrates, resulting in good to excellent chemical yields. This developed radical reaction provides easy and practical access to spiro[2.4]heptane-4,7-dione derivatives.
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