Studies with Polyfunctionally Substituted Heteroaromatics: The Reaction of Heterocyclic Enaminonitriles with α-β-Unsaturated Nitriles
作者:A. M. Hussein、I. S. Abdel Hafez、M. H. Elnagdi
DOI:10.1002/jccs.200000045
日期:2000.4
5-Amino-4-cyano-3-phenylpyrazole (1) reacts with cinnamonitriles (2) to yield the pyrazolo[1,5-a]pyrimidines (3). Also, 5-amino-4-cyano-1-phenylpyrazole (4) reacts with cinnamonitriles (2) to yield the pyrazolo[3,4-b]pyridine derivatives (5). In contrast to this reaction, enaminothiophene (6) reacts with cinnamonitriles (2) to yield compound (7) not (8). The enaminopyrane (9) reacts with cinnamonitriles
5-氨基-4-氰基-3-苯基吡唑(1)与肉桂腈(2)反应生成吡唑并[1,5-a]嘧啶(3)。此外,5-氨基-4-氰基-1-苯基吡唑 (4) 与肉桂腈 (2) 反应生成吡唑并[3,4-b] 吡啶衍生物 (5)。与该反应相反,烯氨基噻吩 (6) 与肉桂腈 (2) 反应生成化合物 (7) 而不是 (8)。烯胺吡喃(9)与肉桂腈(2)反应生成(10)。最后,我们尝试将肉桂腈 (2) 添加到噻吩烷 (13) 中;仅分离出重排和芳构化产物(14)。