Regioselective radical ring-opening reaction of bicyclo[4.2.0]octan-2-ones promoted by samarium(II) iodide
作者:Kiyomi Kakiuchi、Koichi Minato、Ken Tsutsumi、Tsumoru Morimoto、Hideo Kurosawa
DOI:10.1016/s0040-4039(03)00085-6
日期:2003.2
Radical ring-opening reactions of bicyclo[4.2.0]octanones, its C6 alkyl derivatives, and tricyclic ketones promoted by SmI2 gave cyclohexanones via fission of the external cyclobutane bond. The CO2Me, CN, and phenyl derivatives led to the production of the eight-membered ring compounds through cleavage of the central cyclobutane bond. Using this regioselective reaction, the synthesis of (±)-acorenone
双环[4.2.0]辛酮,其C6烷基衍生物和SmI 2促进的三环酮的自由基开环反应通过外部环丁烷键的裂变产生环己酮。CO 2 Me,CN和苯基衍生物通过裂解中央环丁烷键而导致生成八元环化合物。使用该区域选择性反应,实现了(±)-aco烯酮的合成。