The titanium(III)-catalysed cross-selective reductive umpolung of Michael-acceptors represents a unique direct conjugate β-alkylation reaction. It allows the cross-selective preparation of 1,6- and 1,4-difunctionalised building blocks without the requirement of stoichiometric organometallic reagents. In this full paper, the development and scope of the titanium(III)-catalysed cross-selective reductive
钛(III)催化的迈克尔受体的交叉选择性还原活性代表了独特的直接共轭β-烷基化反应。它允许交叉选择制备1,6-和1,4-双官能化的结构单元,而无需
化学计量的有机
金属试剂。在这篇全文中,描述了
钛(III)催化的迈克尔受体交叉选择还原还原
活性剂的发展和范围。基于观察到的选择性和其他机械实验,提出了一种完善的机械方案。