Phthalimide reacted with phenacyl bromide under microwave irradiation to yield phenacyl isoindolidene-1,3-dione (3b), while 3a reacted with phenylhydrazine to yield the phenylhydrazone 4 that was readily converted into indoylphthalimide 8. Similarly N-benzotriazolylacetone (6a) reacted with phenyl hydrazine to yield the phenylhydrazone 7a that was converted into indoylbenzotriazole 9. Treatment of 8 with hydrazine hydrate afforded a mixture of phthalhydrazide 10 and 3-amino-2-methylindole (11). Reacting enaminone 13 with naphthoquinone (14) afforded the aryl naphthofuran 17. The possibility of the formation of the aldehyde 18 was excluded based on HMQC, which revealed that the carbonyl carbon is not linked to any hydrogen.
在微波辐照下,邻苯二甲
酰亚胺与苯酰
溴反应生成苯酰异
吲哚-1,3-二酮(3b),而 3a 与苯
肼反应生成苯腙 4,后者很容易转化为
吲哚酰邻苯二甲
酰亚胺 8。同样,N-苯并三唑基
丙酮(6a)与苯
肼反应生成苯腙 7a,并转化为
吲哚基苯并三唑 9。用
肼水合物处理 8,可得到
酞酰
肼 10 和 3-
氨基-
2-甲基吲哚(11)的混合物。将烯
丙酮 13 与
萘醌(14)反应,可得到芳基
萘呋喃 17。根据 HMQC,羰基碳没有与任何氢相连,因此排除了形成醛 18 的可能性。