well-defined tridentate chiral sulfoxide-N-olefin ligand has been designed and applied in rhodium-catalyzed asymmetric allylic substitutions of racemic allylic carbonates, providing the branched allylic products in good yields with good to high enantioselectivities and excellent regioselectivities. This reaction mechanism, which involves the possible hemilability of olefin coordination on sulfoxide-N-olefin
设计了一种结构明确的三齿手性亚砜-N-烯烃
配体,并将其应用于
铑催化的外消旋烯丙
碳酸酯的不对称烯丙基取代中,以良好的收率提供支化烯丙基产物,并具有良好至高的对映选择性和优异的区域选择性。还详细阐述了该反应机理,其中涉及亚砜-N-烯烃杂化
配体与
铑的烯烃配位的可能半稳定性。