Synthesis of Polyfused Thieno(2,3- b )thiophenes Part 3: Synthesis of Thienopyrimidinotetrazole, Thienopyrimidinotriazepine, Thienopyrimidinotriazine, Thienopyrimidinotriazole and Pyrazolylthienopyrimidine Derivatives
作者:A. Khodairy
DOI:10.1080/10426500307790
日期:2003.4
2,9-Dihydrazinobipyrimidino(2,3- b )thienothiophene ( 2 ) was reacted with nitrous acid, ethoxymethylenemalononitrile, bromomalononitrile, triethyl formate, CS 2 or isatine to afford the corresponding tetrazole, triazepine, triazine, and triazole derivatives 3-8 respectively. Treatment of compound 2 with cyclohexylidenenitriles, acetylacetone, ethyl acetoacetate, 2-hydroxyacetophenone, or S,S-acetals
2,9-二肼基双嘧啶(2,3-b)噻吩并噻吩 (2) 与亚硝酸、乙氧基亚甲基丙二腈、溴丙二腈、甲酸三乙酯、CS 2 或靛红反应,分别得到相应的四唑、三氮杂、三嗪和三唑衍生物 3-8 . 用环己叉腈、乙酰丙酮、乙酰乙酸乙酯、2-羟基苯乙酮或S,S-缩醛处理化合物2分别得到相应的吡唑衍生物9-15。