A facile synthesis of 2-(3-alkynyl-2,3-dihydrobenzofuran-3-yl)acetate
作者:Fengbin Song、Michael D. Gaul、William V. Murray
DOI:10.1016/j.tetlet.2015.08.007
日期:2015.9
facile synthesis of 2-(3-alkynyl-2,3-dihydrobenzofuran-3-yl)acetate (1a, 1b), with a unique alkynyl-benzylic quaternary center on a dihydrobenzofuran ring, was accomplished. The key step of the synthesis is the aryl radical cyclization to the tethered enyne carboxylate to generate the unique alkynyl-benzylic quaternary center. The synthesis started from simple building blocks with high flexibility and