catalytic system that allows asymmetric allyl–allylboronate cross-coupling with high enantioselectivity is reported. This transformation tolerates a large variety of racemic branched allylic alcohols and allylboronate substrates. The utility of the coupling is demonstrated in a concise catalytic asymmetric synthesis of (−)-preclamol.
据报道,Carreira的
铱-(P,烯烃)亚
磷酰胺基催化体系可实现不对称的烯丙基-烯丙基
硼酸酯不对称交联和高对映选择性。这种转化耐受各种各样的外消旋支链烯丙基醇和烯丙基
硼酸酯底物。偶联的效用在简明的(-)-preclamol催化不对称合成中得到了证明。