Ring-opening of enantiomerically pure oxa-containing heterocycles with phosphorus nucleophiles
作者:Héctor Fernández-Pérez、Pablo Etayo、José Luis Núñez-Rico、Bugga Balakrishna、Anton Vidal-Ferran
DOI:10.1039/c4ra10432c
日期:——
Various oxa-containing heterocycles (i.e. enantiopure epoxide- and oxetane-based substrates) were subjected to ring-opening with phosphorus nucleophiles. The ring-opening reactions proceeded smoothly and the resulting 1,2-, and 1,3-phosphino alcohols were efficiently isolated as stable borane complexes. These derivatives arise from regio- and stereocontrolled syntheses based on ring-opening processes of oxa-containing heterocycles. The regio- and stereochemistry of the resulting chiral products were unequivocally confirmed in many cases via single-crystal X-ray diffraction analysis.
各种含氧杂环(即对映纯环氧化物和氧杂环丁烷基底物)与磷亲核剂进行了开环反应。开环反应顺利进行,生成的 1,2-和 1,3-膦醇以稳定的硼烷络合物形式被有效地分离出来。这些衍生物是基于含氧杂环的开环过程进行区域和立体控制合成而得到的。在许多情况下,通过单晶 X 射线衍射分析,所得到的手性产物的区域和立体化学结构都得到了明确的证实。