Metal-Free Direct Construction of 2-(Oxazol-5-yl)phenols from <i>N</i>-Phenoxyamides and Alkynylbenziodoxolones via Sequential [3,3]-Rearrangement/Cyclization
作者:Ming Li、Jia-Hui Wang、Wei Li、Li-Rong Wen
DOI:10.1021/acs.orglett.8b03427
日期:2018.12.7
synthetic protocol for the construction of 2-(oxazol-5-yl)phenol derivatives promoted by K2CO3 from N-phenoxyamides and alkynylbenziodoxolones at room temperature has been developed. Importantly, this protocol involves a tandem sequence that includes [3,3]-rearrangement/alkylidene carbene insertion/Michael addition/cyclization. The metal-free conditions, broad substrate scope, and simple execution make
已经开发了一种温和简单的合成方案,用于在室温下构建由N-苯氧基酰胺和炔基苯并恶唑烷酮由K 2 CO 3促进的2-(恶唑-5-基)苯酚衍生物。重要的是,该协议涉及一个串联序列,该串联序列包括[3,3]重排/亚烷基卡宾插入/迈克尔加成/环化。无金属的条件,广泛的基板范围和简单的执行方式使这种新颖的协议非常有吸引力。
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