作者:Stephen F. Martin、David A. Kummer、Jehrod B. Brenneman
DOI:10.1055/s-2004-829095
日期:——
A new method for preparing α-branched enones from carboxylic acid derivatives is reported. The procedure commenced by the reaction of N,O-dimethylamides with a masked acyl anion equivalent, followed by the addition of (trimethylsilyl-methyl)cerium dichloride to give intermediates that undergo Lewis acid mediated olefination to produce enol ethers that are then hydrolyzed to afford simple α-branched
报道了一种由羧酸衍生物制备α-支化烯酮的新方法。该过程开始于 N,O-二甲基酰胺与掩蔽的酰基阴离子等价物的反应,然后添加(三甲基甲硅烷基-甲基)二氯化铈得到中间体,该中间体经过路易斯酸介导的烯化生成烯醇醚,然后水解得到简单的α-支链烯酮,总产率高。