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
已经开发了一种容易的一锅合成方法,该方法可从市售对映纯羟基酯中以95%的立体异构体纯度提供邻位二醇和1,3-二醇。用DIBALH还原该酯,并用4-戊烯基溴化镁原位烷基化,在后处理后产生标题二醇,为非对映体对。这些对易于通过制备色谱分离,从起始原料中获得具有保留的立体异构体纯度的产物。该方法代表了许多普通天然产物的方便制备方法,例如cerambycid甲虫信息素和向双环缩醛树皮甲虫信息素的中间体。