Palladium-Catalyzed Allylic Alkylation of Carboxylic Acid Derivatives: N-Acyloxazolinones as Ester Enolate Equivalents
作者:Barry M. Trost、David J. Michaelis、Julie Charpentier、Jiayi Xu
DOI:10.1002/anie.201105801
日期:2012.1.2
Triple A: A general asymmetric allylic alkylation of ester enolate equivalents at the carboxylic acid oxidation state is reported. N‐Acylbenzoxazolinone‐derived enol carbonates were synthesized and employed in the palladium‐catalyzed alkylation reaction. The imide products were readily converted into a series of carboxylic acid derivatives without loss of enantiopurity.
Triple A:报道了在羧酸氧化态下酯烯醇化物等价物的一般不对称烯丙基烷基化。N-酰基苯并恶唑啉酮衍生的烯醇碳酸酯被合成并用于钯催化的烷基化反应。酰亚胺产物很容易转化为一系列羧酸衍生物,而不会损失对映纯度。