Use of biological systems for the preparation of chiral molecules. 6. Preparation of stereoisomeric 2,4-diols: synthesis and conformational study of bicyclo derivatives, isomeric components of a pheromone of Trypodendron lineatum
Practical one-pot stereospecific preparation of vicinal and 1,3-diols
作者:Bjorn Bohman、Gavin R. Flematti、C. Rikard Unelius
DOI:10.1016/j.tetlet.2016.11.101
日期:2017.1
A facile one-pot synthesis providing vicinal diols and 1,3-diols in >95% stereoisomeric purity from commercially available enantiopure hydroxy esters has been developed. The esters were reduced with DIBALH and alkylated in situ with 4-pentenylmagnesium bromide, which after workup generated the title diols as diastereomeric pairs. These pairs were easily separated by preparative chromatography, affording