作者:Candice L. Joe、Thomas P. Blaisdell、Allison F. Geoghan、Kian L. Tan
DOI:10.1021/ja504247g
日期:2014.6.18
In hydroformylation, phosphorus-based directing groups have been consistently successful at placing the aldehyde on the carbon proximal to the directing group. The design and synthesis of a novel catalytic directing group are reported that promotes aldehyde formation on the carbon distal relative to the directing functionality. This scaffolding ligand, which operates through a reversible covalent bond
在加氢甲酰化中,基于磷的导向基团一直成功地将醛置于与导向基团相邻的碳上。据报道,一种新型催化导向基团的设计和合成促进了相对于导向功能的碳远端的醛形成。这种支架配体通过与底物的可逆共价键起作用,已应用于高烯丙醇的非对映选择性加氢甲酰化,以选择性地提供 δ-内酯。改变醇和烯烃之间的距离表明,高烯丙醇使远端内酯具有最高水平的区域选择性。