Synthesis and Structure of 2-Substituted Thieno[3′,2′:5,6]pyrido[4,3-d]pyrimidin-4(3H)-one Derivatives
作者:Jian-Chao Liu、Hong-Wu He、Ming-Wu Ding
DOI:10.1002/hlca.200790103
日期:2007.5
A series of new 2-substituted 3-(4-chlorophenyl)-5,8,9-trimethylthieno[3′,2′: 5,6]pyrido[4,3-d]pyrimidin-4(3H)-ones 8 were synthesized via an aza-Wittig reaction. Phosphoranylideneamino derivatives 6a or 6b reacted with 4-chlorophenyl isocyanate to give carbodiimide derivatives 7a or 7b, respectively, which were further treated with amines or phenols to give compounds 8 in the presence of a catalytic
一系列新的2-取代的3-(4-氯苯基)-5,8,9-三甲基噻吩并[3',2':5,6]吡啶基[4,3 - d ]嘧啶-4(3 H)-通过氮杂-维蒂希反应合成了8个。磷亚苄基氨基衍生物6a或6b分别与4-氯苯基异氰酸酯反应得到碳二亚胺衍生物7a或7b,在催化量的EtONa或K 2 CO 3存在下,将其进一步用胺或酚处理以得到化合物8。2-(4-氯苯氧基)-3-(4-氯苯基)-5,8,9-三甲基噻吩并[3',2':5,6]吡啶[4,3-]的结构通过X射线分析确认了d ]嘧啶-4(3 H)-one(8j)。