SYNTHESIS OF NEW RING SYSTEMS: ISOMERIC 1,2,4-TRIAZOLOPYRIMIDO [4″,5″:4′,5′]THIENO[3′,2′:5,6]PYRIDO[3,2C]CINNOLINES AND OTHER RELATED SYSTEMS
作者:M.Z. A. Badr、A. A. Geies、M. S. Abbady、A. A. Dahy
DOI:10.1080/10426500490494642
日期:2004.12.1
3-Amino-2-Cyano-4-(p-tolyl)thieno[3′,2′:5,6]pyrido[3,2-c]cinnoline 1 underwent ring closures with formamide and carbon disulphide to afford pyrimidothienopyridocinnaline 2 and its pyrimido-9,11-thione derivative 3, respectively. Treatment of 1 with triethylorthoformate followed by hydrazine hydrate produced 10-amino-11-imino-pyrimido system 5, which in turn reacted with triethylorthoformate, acetic
3-Amino-2-Cyano-4-(p-tolyl)thieno[3',2':5,6]pyrido[3,2-c]cinnoline 1 用甲酰胺和二硫化碳进行闭环,得到 pyrimidothienopyridocinnaline 2 和分别为嘧啶基-9,11-硫酮衍生物3。用原甲酸三乙酯和水合肼处理 1 产生 10-氨基-11-亚氨基-嘧啶系统 5,它依次与原甲酸三乙酯、乙酸、二硫化碳和乙酰丙酮反应环化成系统,1,2,4-三唑, 2-methyltriazolo, triazolo-2-thione, 和 1,2,4-triazepinopyrimido thienopyridocinnolines 6–8, 11, 分别。类似地,3-氨基-2-甲酰胺基-噻吩并吡啶啉12与原甲酸三乙酯反应得到嘧啶并噻吩并吡啶啉-11-one 13,