A new method was developed for the first catalytic enantioselective borylation of aliphatic ketones. A variety of substrates reacted efficiently with bis(pinacolato)diboron in the presence of a copper(I)/chiral N-heterocyclic carbene complex catalyst to furnish optically active tertiary α-hydroxyboronates with moderate to high enantioselectivities (up to 94 % ee). Notably, the product could be converted
开发了一种新的方法,用于脂族酮的首次催化对映选择性
硼化。多种底物在
铜(I)/手性N-杂环卡宾络合物催化剂的存在下与双(
频哪醇)二
硼有效反应,以提供具有中等至高对映选择性(最高94%ee)的光学活性叔α-羟基
硼酸酯。值得注意的是,可以使用立体特异性
硼官能化方法将产物转化为手性叔醇衍
生物。还描述了对映选择性机理的理论研究。