5,6-Dimethoxy isobenzofuran is generated from the dimethylacetal of 6-hydroxymethyl veratraldehyde and intercepted by a variety of dienophiles to produce the expected oxygen-bridged adducts in good yield. Many of the latter are easily aromatised to naphthalenes.
5,6-二甲氧基
异苯并呋喃由6-羟甲基四醛的二甲基
乙缩醛生成,并被多种亲二烯体所拦截,从而以高收率生产出预期的氧桥联加合物。后者中的许多很容易被芳香化为
萘。