1,5-Diketones from 3,4-dihydropyranones: An application in the synthesis of (±)-α-herbertenol
作者:David C. Harrowven、Joanne C. Hannam
DOI:10.1016/s0040-4020(99)00495-0
日期:1999.7
An approach to 1,5-diketones involving the addition of organolithium reagents to 3,4-dihydropyranones is described. Good yields are obtained when reactions are quenched with trimethylsilyl chloride prior to hydrolytic work up and the organolithium reagent contains a Lewis basic group adjacent to the carbon to lithium bond. The method has been applied in a short synthesis of the fungicidal sesquiterpene
描述了一种涉及将有机锂试剂添加到3,4-二氢吡喃酮中的1,5-二酮的方法。当在水解后处理之前用三甲基甲硅烷基氯淬灭反应,并且有机锂试剂包含与碳至锂键相邻的路易斯碱性基团时,可获得良好的产率。该方法已用于杀真菌倍半萜烯(±)-α-香叶烯醇的短合成中。