The o-quinone 3-methyl-4,5-benzofurandione, , was prepared in 94% overall yield from p-henzoquinone and 1-morpholino-propene. The cycloaddition chemistry of with several dienes was examined and found to proceed in good to excellent yields.
                                    所述Ô -quinone 3-甲基4,
5-苯并呋喃,,在从94%的总收率制备p -henzoquinone和1吗啉代
丙烯。对具有几个二烯的环加成
化学进行了检查,发现收率良好。