A versatile two-stage synthesis of 2-substituted benzo[b]furans from (2-methoxyphenyl)ethynes
Abstract
(2-Methoxyphenyl)ethynes react with aryl or alkyl halides to give disubstituted alkynes which are converted into the corresponding 2-substituted benzo[b]furans on treatment with lithium iodide in 2,4,6-trimethylpyridine.