Ml. Kerns et al., DIHYDROBENZOFURAN DERIVATIVES VIA THE ANODIC CYCLOADDITION REACTION OF P-METHOXYPHENOLS AND VINYL SULFIDES, Tetrahedron letters, 35(41), 1994, pp. 7529-7532
The anodic oxidation of p-methoxyphenols in the presence of vinyl sulf
ides gives high yields of dihydrobenzofurans arising via a formal 1,3-
cycloaddition reaction of the vinyl sulfide and the anodically generat
ed phenoxonium ion.