Diastereoselective [2+2] photocycloaddition of polymer-supported cyclic chiral enone with ethylene
作者:Takuya Shintani、Kazunori Kusabiraki、Atsuko Hattori、Akinori Furutani、Ken Tsutsumi、Tsumoru Morimoto、Kiyomi Kakiuchi
DOI:10.1016/j.tetlet.2004.01.010
日期:2004.2
derivative, previously shown to be very effective chiral auxiliaries in the diastereoselective [2+2] photocycloaddition of cyclic enones with the simplest olefin, ethylene, was attached to poly(ethylene glycol)-grafted Wang resin. We then investigated the diastereoselective [2+2] photocycloaddition on solid support in several solvents. As the result, we accomplished good selectivity in toluene as well
苯薄荷基衍生物以前被证明是在环烯酮与最简单的烯烃乙烯的非对映选择性[2 + 2]光环加成中非常有效的手性助剂,被连接到聚乙二醇接枝的Wang树脂上。然后,我们研究了几种溶剂在固相支持物上的非对映选择性[2 + 2]光环加成反应。结果,我们在甲苯中实现了良好的选择性以及聚合物负载的手性助剂的回收利用。这是在固体载体上光化学获得双环[4.2.0]辛烷衍生物的第一个例子。