Additive-controlled regioselective direct asymmetric aldol reaction of hydroxyacetone and aldehyde
作者:Ling-yan Liu、Bing Wang、Yunna Zhu、Wei-xing Chang、Jing Li
DOI:10.1016/j.tetasy.2013.03.018
日期:2013.5
developed for the direct asymmetric aldol reaction of hydroxyacetone and various aldehydes with moderate to high yields and high enantioselectivities. More importantly, this regioselective reaction could be easily regulated by changing the additives in the presence of the same organocatalyst 1b, to afford the normal 1,2-diol adducts and the disfavoured 1,4-diol products, respectively, in a highly regioselective
已经开发了由1-脯氨酸和1-缬氨酸制备的结构简单的二肽衍生物1b,用于羟丙酮和各种醛的直接不对称醛醇缩合反应,具有中等至高收率和高对映选择性。更重要的是,可以通过在相同的有机催化剂1b的存在下改变添加剂来轻松地调节区域选择性反应,从而以高度区域选择性的方式分别提供正构1,2-二醇加合物和不利的1,4-二醇产物。还提出了可能的反应机理。