An efficient iminophosphorane-mediated synthesis for pyrido[3′,2′:4,5]thieno[3,2-d] pyrimidine derivatives
作者:Carlos Peinador、María J. Moreira、José Ma. Quintela
DOI:10.1016/s0040-4020(01)89699-x
日期:——
for pyridothienopyrimidines bearing various substituents at position 2 of the pyrimidine ring is reported. The aza Wittig-type reaction of iminophosphoranes derived from the aldehyde 4 with heterocumulenes leads to functionalized fused pyrimidines. Iminophosphoranes 6, 2-[(N-arylamino)methyl-3-(triphenylphosphoranylidine)amino]thieno[2,3-b]pyridines, react with isocyanates, carbon dioxide and carbon
已经报道了一种现成的一锅制备吡啶并嘧啶并嘧啶的方法,该嘧啶并嘧啶并嘧啶在嘧啶环的2位带有多个取代基。衍生自醛4的亚氨基正膦与杂聚枯烯的aza Wittig型反应导致官能化的稠合嘧啶。亚氨基正膦6,2 - [(N-芳基氨基)甲基-3-(triphenylphosphoranylidine)氨基]噻吩并[2,3-b]吡啶,与异氰酸酯,二氧化碳和二硫化碳在温和条件下反应,得到官能化的2,3-二氢吡啶并[3',2':4,5]噻吩并[3,2-d]嘧啶类7,8和9分别。