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 trimethylsilylchloride 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