Light-induced and related reactions of quinones. Part VI. Reactions of some p-quinones carrying formyl groups
作者:J. Malcolm Bruce、David Creed
DOI:10.1039/j39700000649
日期:——
) propionaldehyde are described. Irradiation of solutions of these quinones in benzene with visible light leads to the isolation of 2,5-dihydroxybenzoic acid from formyl-1,4-benzoquinone, and to the formation of 5-hydroxycoumaran-2-one and 3,4-dihydro-6-hydroxycoumarin from the next two quinones, respectively; the last two quinones in the series lose the elements of formaldehyde, and give 5-hydrox
甲酰基-1,4-苯醌,1,4-苯醌基乙醛,3-(1,4-苯醌基)丙醛,2-(1,4-苯醌基)-2-甲基丙醛和2-甲基-2-(1)的制备描述了(4-萘醌-2-基)丙醛。用可见光照射这些苯醌在苯中的溶液导致将2,5-二羟基苯甲酸从甲酰基-1,4-苯醌中分离出来,并形成5-羟基香豆素-2-酮和3,4-二氢-接下来的两个醌中的6-羟基香豆素;该系列中的最后两个醌失去甲醛元素,分别生成5-羟基-3-甲基苯并呋喃和5-羟基-3-甲基萘-[1,2- b ]呋喃。没有任何辐射进行得很干净。