Preparative flash vacuum thermolysis. A retro Diels–Alder reaction as a convenient route to isobenzofuran
Abstract
Pure isobenzofuran was obtained in quantitative yield from flash-vacuum thermolysis of the readily accessible 1,4-epoxy-1,2,3,4-tetrahydronaphthalene; Diels–Alder reactions of isobenzofuran with olefins of various reactivity were studied.