作者:Matthew L. Leathen、Brandon R. Rosen、John P. Wolfe
DOI:10.1021/jo9007223
日期:2009.7.17
A four-step synthesis of cis-3,5-disubstituted morpholines from enantiomerically pure amino alcohols is described. The key step in the synthesis is a Pd-catalyzed carboamination reaction between a substituted ethanolamine derivative and an aryl or alkenyl bromide. The morpholine products are generated as single stereoisomers in moderate to good yield. This strategy also provides access to fused bicyclic
描述了从对映体纯氨基醇合成顺式-3,5-二取代吗啉的四步法。合成中的关键步骤是取代乙醇胺衍生物与芳基或烯基溴化物之间的 Pd 催化的碳胺化反应。吗啉产物作为单一立体异构体以中等至良好的产率生成。该策略还提供了对稠合双环吗啉以及 2,3- 和 2,5- 二取代产物的访问。