Utility of 1‐Chloro‐3,4‐dihydronaphthalene‐2‐carboxaldehyde in the Synthesis of Novel Heterocycles with Pharmaceutical Interest
作者:Samir Bondock、Wesam Khalifa、Ahmed A. Fadda
DOI:10.1080/00397910600591763
日期:2006.6.1
Abstract Ethyl α‐cyano‐β‐(1‐chloro‐3,4‐dihydronaphthalene‐2‐yl) acrylate (2) was prepared by the Knoevenagel condensation of 1 with ethyl cyanoacetate. Compound 2 was used as the key intermediate to prepare Schiff bases (3a, b), benzo[c]acridine (4), naphthyl thiopyrimidine (5), and pyrazolo[2,3‐a]‐benzo[h]quinazoline (6) derivatives through its reaction with hydrazines, p‐ansidine, thiourea, and 3
摘要 α-氰基-β-(1-氯-3,4-二氢萘-2-基)丙烯酸乙酯 (2) 通过 1 与氰基乙酸乙酯的 Knoevenagel 缩合制备。化合物2作为关键中间体制备了席夫碱(3a, b)、苯并[c]吖啶(4)、萘基硫代嘧啶(5)和吡唑并[2,3-a]-苯并[h]喹唑啉(6 ) 分别与肼、对苯胺、硫脲和 3,5-二氨基-4-苯基偶氮吡唑反应生成衍生物。1 与马尿酸的碱催化环缩合反应得到恶唑酮衍生物 (7)。化合物7与苯胺反应得到咪唑酮衍生物(9)。用不同类型的二氨基吡唑处理化合物 1 得到 6,7-二氢-吡唑并[2,3-a]-苯并[h]喹唑啉(10-13)衍生物。