Attainment of syn-selectivity for boron-mediated asymmetric aldol reactions of carboxylic esters
作者:Ji-Feng Liu、Atsushi Abiko、Zhonghua Pei、Dana C Buske、Satoru Masamune
DOI:10.1016/s0040-4039(98)00123-3
日期:1998.4
reagent for syn-selective aldol reactions has been developed based on the recent finding that the stereochemistry of the boron-mediated aldol reaction of a carboxylic ester is controlled by the bulkiness of the alcohol moiety of the ester, by the proper choice of reagents, and by the enolization conditions. This readily available, inexpensive reagent has been utilized in studies directed towards the synthesis
为顺式选择性羟醛缩合反应的新的手性试剂已经被开发了基于最近的发现,即羧酸酯的硼介导的醛醇缩合反应的立体化学通过该酯的醇部分的膨松度的控制,通过适当选择试剂,并受烯醇化条件的影响。这种易于获得的廉价试剂已被用于大环内酯单萜内酯的合成研究中。