General Synthesis of Ketones from Carboxylic Esters and Carboxamides by Use of Mixed Organolithium-Magnesium Reagents: Syntheses of Artemisia Ketone
作者:Charles Fehr、Jos� Galindo、Roland Perret
DOI:10.1002/hlca.19870700710
日期:1987.11.4
The novel reagents formed by combination of Grignardreagents (RMgX) with lithium diisopropylamide (LDA) convert non-enolizable or slowly enolizable carboxylicesters or caboxamides into ketones which are protected from further reaction by their in situ conversion into enolates. These enolates can be trapped with electrophiles such as Me3SiCl and allyl bromide. The scope of this Grignard mono-addition