Diastereoselective Synthesis of Spiro[2.3]hexanes from Methylenecyclopropane and Cyanoalkenes Catalyzed by a Tin-Ate Complex
作者:Itaru Suzuki、Jun-ya Shimazu、Shinji Tsunoi、Ikuya Shibata
DOI:10.1002/ejoc.201900518
日期:2019.6.16
with cyanoaokenes substituted with ester groups catalyzed by a Sn and Mg ate complex. The diastereoselectivity was affected by the halogen of the catalyst and electron‐withdrawing groups on the cyanoalkene. The transformation of the spirohexane was carried out to afford a cyclopentanoid which has been prepared only by a transition metal catalyst.
螺环烷是通过亚甲基环丙烷与氰基酮的热环合反应合成的,氰基酮被Sn和Mg配合物催化的酯基取代。非对映选择性受催化剂的卤素和氰基烯烃上吸电子基团的影响。进行螺己烷的转化,得到仅通过过渡金属催化剂制备的环戊烷。