Synthesis of cyclopropane derivatives from electron-deficient olefins and dichloromethane via copper (I) catalysed photochemical addition followed by an …
M Mitani, Y Yamamoto, K Koyama
文献索引：Mitani, Michiharu; Yamamoto, Yasuo; Koyama, Kikuhiko Journal of the Chemical Society, Chemical Communications, 1983 , # 23 p. 1446 - 1447
The synthesis of cyclopropane derivatives by the transfer of a methylene group of di-iodomethane to olefins has been success- ful using the Simmons-Smith reaction1 and some of its varia- tions.2 However, these methods are limited in that only electron-rich olefins are used because the intermediate metal- methylene carbenoid species are electrophilic and because di-iodomethane is more often used as the cyclopropanation reagent than dichloromethane which is less ...
