Tandem Henry/oxa-Michael route to the 1,3-disubstituted-1,3-dihydrobenzo[c]furan system
作者:Frederick A. Luzzio、Otome E. Okoromoba
DOI:10.1016/j.tetlet.2011.09.123
日期:2011.12
reaction mechanism entails a base-mediated nitronate addition to the aryl formyl group followed by intramolecular alcoholate addition to the unsaturated component that then affords the isobenzofuran system.
在1,1,3,3-四甲基胍存在下,邻甲酰基肉桂酸酯和邻甲酰基-α-苯甲酮与适当取代的烷基硝基化合物的反应导致形成1,3-二取代的二氢异苯并呋喃。该反应机理需要将碱介导的硝酸酯加成至芳基甲酰基,然后将分子内醇酸酯加成至不饱和组分,然后提供异苯并呋喃体系。