α,β-Unsaturated selenoaldehydes and selenoketones the reaction behavior as a heterodiene and/or a dienophile
作者:Guang Ming Li、Masahito Segi、Tadashi Nakajima
DOI:10.1016/s0040-4039(00)92677-7
日期:1992.6
β-Unsaturated selenoaldehydes and selenoketones, generated in situ by selenation of the corresponding carbonyl compounds with bis[dimethylaluminum) selenide, underwent regioselective self-condensation to yield cyclic diselenide derivatives. On the other hand, in the presence of a trapping agent, they underwent intermolecular Diels-Alder cycloadditions in two different modes depending on the trapping agent
通过相应的羰基化合物与双[二甲基铝]硒化物的硒化作用原位生成的α,β-不饱和硒醛和硒酮进行区域选择性自缩合反应,生成环状二硒化物衍生物。另一方面,在存在捕集剂的情况下,它们根据捕集剂以两种不同的方式经历分子间的Diels-Alder环加成反应,即作为向降冰片二烯的杂二烯或向环戊二烯的亲二烯体。FS