Studies on Thiazolopyridines. Part 3: Reactivity of Thiazolo[3,2- a ]-3-aza[1,8]naphthyridine Towards Some Nucleophiles
作者:Gameel A. M. El-Hag Ali
DOI:10.1080/10426500307809
日期:2003.4
A variety of new thiazolo[3,2- a ]pyridine derivatives 2a-h having 3-indolyl group were produced by refluxing 1a with different benzylidenemalononitrile derivatives. Reactivity of compound 4 toward some nitrogen nuclcophiles was investigated. Thus, the novel pyrazoles 6a , b were obtained when compound 4 was allowed to react with hydrazine and phenyl hydrazine in ethanol under reflux. On the other
通过将1a与不同的亚苄基丙二腈衍生物回流制备了多种具有3-吲哚基的新型噻唑并[3,2-a]吡啶衍生物2a-h。研究了化合物 4 对一些含氮亲核试剂的反应性。因此,当使化合物4在回流下在乙醇中与肼和苯肼反应时,获得新型吡唑6a、b。另一方面,通过化合物4与苯甲酰肼缩合形成吡唑并[3',4':4,5]噻唑并[3,2-a]-3-氮杂[1,8]萘啶8。最后,通过用活性乙烯化合物处理化合物4获得含有吡喃环9和10的稠合杂环化合物。