Direct Lewis Acid Catalyzed Conversion of Enantioenriched <i>N</i>-Acyloxazolidinones to Chiral Esters, Amides, and Acids
作者:Jason M. Stevens、Ana Cristina Parra-Rivera、Darryl D. Dixon、Gregory L. Beutner、Albert J. DelMonte、Doug E. Frantz、Jacob M. Janey、James Paulson、Michael R. Talley
DOI:10.1021/acs.joc.8b02451
日期:2018.12.7
enabled a unified protocol for the direct conversion of enantioenriched N-acyloxazolidinones to the corresponding chiral esters, amides, and carboxylic acids. This straightforward and catalytic method has shown remarkable chemoselectivity for substitution at the acyclic N-acyl carbonyl for a diverse array of N-acyloxazolidinone substrates. The ionic radius of the Lewis acid catalyst was demonstrated as a
通过多变量高通量实验策略鉴定Yb(OTf)3,已实现了将富含对映体的N-酰基氧杂唑烷酮直接转化为相应的手性酯,酰胺和羧酸的统一方案。这种直接和催化方法已经显示出显着的化学选择性用于在无环取代的N-酰基羰基为得到大量不同的Ñ -acyloxazolidinone基材。路易斯酸催化剂的离子半径被证明是催化剂性能的关键驱动因素,导致使用催化Y(OTf)3鉴定出医药中间体的稳健且可扩展的酯化反应。