4-benzoquinones 1d,e with 2,3-dimethylbutadiene was also investigated to yield 2-aryl-5,8-dihydro-6,7-dimethyl-1,4-naphthohydroquinones 2a,b. Cyclocondensation reactions of Diels-Alder adducts 2b, 3b, 5a with ethylenediamine, o-substituted primary aromatic amines gave quinoxaline, phenazine, phenoxazine and phenothiazine ocyclic derivatives 6–14.
2-aryl-1,4-benzoquinones 1a-d 与许多不同的二烯,即
2,3-二甲基丁二烯的环加成反应;1,4-二苯基
丁二烯和
蒽产生 2-aryl-6,7-dimethyl-1,4-naphthoquinones 3a,b;分别研究了2,5,8-三苯基-
1,4-萘醌4和2-芳基-1,4,9,10-四氢-9,10-邻苯并
蒽-1,4-二酮5。此外,还研究了 2-aryl-1,4-benzoquinones 1d,e 与
2,3-二甲基丁二烯的环加成反应生成 2-aryl-5,8-dihydro-6,7-dimethyl-1,4-
萘氢醌2a,b。Diels-Alder 加合物 2b、3b、5a 与
乙二胺、邻位取代的伯芳香胺的环缩合反应得到
喹喔啉、
吩嗪、
吩恶嗪和
吩噻嗪环衍
生物 6-14。