A series of novel chiral bifunctional tertiary amine–thioureas based on spirobiindane were designed and synthesized as organocatalysts. One of these catalysts was shown to promote the asymmetric Michael addition reaction of 1,3-diphenylpropane-1,3-dione to nitroolefins, affording the desired products in good yields (up to 95%) and enantioselectivities (up to 98% ee).
设计并合成了一系列基于
螺双茚满的新型手性双官能叔胺-
硫脲作为有机催化剂。这些催化剂之一显示出可以促进
1,3-二苯丙烷-1,3-二酮与硝基烯烃的不对称迈克尔加成反应,从而以高收率(高达95%)和对映选择性(高达98%ee)提供所需的产物。 。