Synthesis of Arylnaphthoquinones and Their Reactions with<i>o</i>-Substituted Primary Aromatic Amines
作者:Ragab F. Fandy、Hessan H. Abbas、Ayman S. Al-Hussaini、Ahmed S. Hammam
DOI:10.1002/jccs.200100113
日期:2001.8
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。