Reaction of heteroaromatic analogs of homophthalic anhydride: Synthesis of hetero analogs of peri-hydroxy polycyclic aromatic compounds, isocoumarins, isoquinolinones, and related compounds.
作者:YASUYUKI KITA、SHINICHIRO MOHRI、TERUHISA TSUGOSHI、HATSUO MAEDA、YASUMITSU TAMURA
DOI:10.1248/cpb.33.4723
日期:——
The reactions of heterohomophthalic anhydrides, 3-carboxy-1-methylindole-2-acetic anhydride (4), 2-carboxybenzo [b] furan-3-acetic anhydride (5), 2-carboxythiophene-3-acetic anhydride (6), and 3-carboxy-1, 4-dimethylpyrrole-2-acetic anhydride (23) with carbon-carbon multiple bonds (C=C and C≡C), acylating agents, and cyclic imines are described. Treatment of the anhydrides (4-6) with various compounds containing carbon-carbon multiple bonds (7-10) in the presence of a strong base caused cycloaddition with spontaneous extrusion of carbon dioxide to give the corresponding linearly condensed peri-hydroxy heteroaromatic compounds (11-19), regioselectively. Base-catalyzed acylation of 4 with acetic anhydride and β, β-dimethylacryloyl chloride gave 3, 5-dimethylpyrano [4, 3-b] indol-1 (5H)-one (21) and 3, 3, 11-trimethyl-3, 4-dihydropyrano [4', 3' : 2, 3]-pyrano [4, 5-b] indole-1, 6 (11H)-dione (22), respectively. Reaction of the anhydrides (4, 6, and 23) with 3, 4-dihydroisoquinoline (24) gave the corresponding condensation products, 14-carboxy-13-methyl-5, 6, 14, 14a-tetrahydrobenz [a] indolo [3, 2-g] quinolizin-8 (13H)-one (25), 12-carboxy-5, 6, 12, -12a-tetrahydrobenzo [a] thieno [2, 3-g] quinolizin-8-one (26) and 12-carboxy-11-methyl-5, 6, 12, 12a-tetrahydrobenzo [a] pyrrolo [3, 2-g] quinolizin-8 (11H)-one (27), in high yields.
杂环邻苯二甲酸酐、3-羧基-1-甲基吲哚-2-乙酸酐 (4)、2-羧基苯并[b]呋喃-3-乙酸酐 (5)、2-羧基噻吩-3-乙酸酐 (6)、3-羧基-1, 4-二甲基吡咯-2-乙酸酐 (23) 与碳-碳多键(C=C 和 C≡C)、酰化剂和环状亚胺的反应、和 3-羧基-1,4-二甲基吡咯-2-乙酸酐(23)的碳-碳多键(C=C 和 C≡C)、酰化剂和环状亚胺。在强碱存在下,将酸酐(4-6)与各种含有碳碳多键的化合物(7-10)进行处理,可引起环化反应,并自发挤出二氧化碳,从而得到相应的线性缩合过羟基杂芳香族化合物(11-19),且具有区域选择性。在碱催化下,4 与乙酸酐和 β,β-二甲基丙烯酰氯发生酰化反应,分别得到 3,5-二甲基吡喃并[4,3-b]吲哚-1 (5H)-酮(21)和 3,3,11-三甲基-3,4-二氢吡喃并[4',3' : 2,3]吡喃并[4,5-b]吲哚-1,6 (11H)-二酮(22)。酸酐(4、6 和 23)与 3,4-二氢异喹啉(24)反应得到相应的缩合产物,即 14-羧基-13-甲基-5,6,14,14a-四氢苯并[a]吲哚并[3,2-g]喹嗪-8 (13H)-酮(25)、高产率的 12-羧基-5,6,12,-12a-四氢苯并[a]噻吩并[2,3-g]喹嗪-8-酮 (26) 和 12-羧基-11-甲基-5,6,12,12a-四氢苯并[a]吡咯并[3,2-g]喹嗪-8 (11H)-one (27)。