Preparation and Characterization of Cyanovinyl-Substituted 2-Aminothiophenes and 2-Aminothiazoles and Some of Their Heterooligomers
作者:Katrin Eckert、Anke Schröder、Horst Hartmann
DOI:10.1002/1099-0690(200004)2000:7<1327::aid-ejoc1327>3.0.co;2-t
日期:2000.4
The reaction of 2,2-dicyanoethenyl- and 1,2,2-tricyanoethenyl-substituted bromoalkanes, bromomethyl benzenes, thiophenes, and furans 19-22 with 3-aminothioacrylamides and their 2-azaanalogues 23 and 24 gives a series of 5-dicyanoethenyl- and 5-tricyanoethenyl-substituted 2-aminothiophenes, 2-aminothiazoles and their (hetero)benzologous analogues 25-32. The solvatochromism, which is a characteristic
2,2-二氰基乙烯基-和 1,2,2-三氰基乙烯基取代的溴代烷烃、溴甲基苯、噻吩和呋喃 19-22 与 3-氨基硫代丙烯酰胺及其 2-氮杂类似物 23 和 24 反应生成一系列 5-二氰基乙烯基- 和 5-三氰基乙烯基取代的 2-氨基噻吩、2-氨基噻唑及其(杂)苯类类似物 25-32。溶剂化变色是这些供体-受体取代的杂环化合物的特征,被详细研究并与 Kamlet-Taft 溶剂参数相关联。