Synthesis of Some New Polyfused Thienothiophenes Part 4: Synthesis of Thienopyrimidine, Thienotriazine, Thienoimidazotriazine, Thienotriazolotriazine, and Thienotetrazolotriazine Derivatives
作者:H. M. Moustafa、A. Khodairy、A. M. M. El-Saghier
DOI:10.1080/10426500307907
日期:2003.6
S-acetals, and oxallyl chloride to give thienopyrimidines 2-6 and thieno-1,4-diazepine 7 . Treatment of compound 1 with nitrous acid afforded compound 8 , which converted into the corresponding chloro derivative 9 by using PCl 5 . Compound 9 was reacted with amino reagents to afford the corresponding thienoimidazotriazines 10 and 11 , thienotriazolotriazines 12 and 13 and 4-hydrazinothienotriazine 14 . Treatment
3,4-二氨基-2,5-二甲酰氨基噻吩(2,3-b)噻吩 1 与 CS 2 、羰基化合物、氯甲酸乙酯、S,S-缩醛和草酰氯反应,得到噻吩并嘧啶 2-6 和thieno-1,4-二氮杂 7 。用亚硝酸处理化合物1得到化合物8,通过使用PCl 5 将其转化为相应的氯衍生物9。化合物9与氨基试剂反应得到相应的噻吩并咪唑并三嗪10和11、噻吩并三唑并三嗪12和13以及4-肼基噻吩并三嗪14。用醛、原甲酸三乙酯、CS 2 、亚硝酸和亚亚基丙二腈处理化合物14,分别得到噻吩并三唑并三嗪16-18、噻吩并四唑三嗪19和4-吡唑基-噻吩并三嗪20-22衍生物。