Organocatalytic Asymmetric Aldol Reaction of Hydroxyacetone with β,γ-Unsaturated α-Keto Esters: Facile Access to Chiral Tertiary Alcohols
作者:Chen Liu、Xiaowei Dou、Yixin Lu
DOI:10.1021/ol2021274
日期:2011.10.7
An efficient direct asymmetric aldol reaction between hydroxyacetone and β,γ-unsaturated α-keto esters has been successfully developed. In the presence of 9-amino-9-deoxy-epi-cinchonine and trifluoroacetic acid, the direct aldol reaction of O-protected hydroxyacetone proceeded in a highly enantioselective manner, affording the desired adducts containing a chiral tertiary alcohol in high yields and
已经成功开发了羟基丙酮与β,γ-不饱和α-酮酯之间有效的直接不对称醛醇缩合反应。在9-氨基-9-脱氧-表-辛可宁和三氟乙酸的存在下,O-保护的羟基丙酮的直接醛醇缩合反应以高度对映选择性的方式进行,从而以高收率和优异的收率提供了所需的含手性叔醇的加合物。对映选择性。所得的醇醛产物是用于合成2-取代的甘油衍生物的有价值的前体。