tetraphenylresorcinol, 2,4,6-triphenylresorcinol and 2,4-diphenylnaphthoresorcinol is described. During the oxidation of these phenyl-substituted resorcinols carbon monoxide is evolved followed by a ring contraction to phenyl-substituted cyclopentadienones. The deeply colored solutions obtained on oxidation give intensive ESR-signals with fine structure. We suggest that the reaction proceeds via a biradical
描述了四苯基
间苯二酚,2,4,6-三苯基
间苯二酚和2,4-二苯基
萘间苯二酚的合成。在这些苯基取代的
间苯二酚的氧化过程中,产生
一氧化碳,然后环收缩成苯基取代的
环戊二烯酮。通过氧化获得的深色溶液可产生具有精细结构的密集ESR信号。我们建议该反应通过
间苯二酚的双自由基进行。对于以低收率分离的二聚化合物,讨论了环喹诺醚的结构。