A novel fused heterocyclic system-synthesis of substituted 9,10-dihydro-1,3,4,6,7,10-hexaazacyclohepta[de]naphthalen-8(7H)-ones
作者:Zhijun Wang、Richard Neidlein
DOI:10.1016/s0040-4020(98)00588-2
日期:1998.8
4-Amino-5-chloro-2,7-bis(dimethylamino)pyrimido[4,5-d]pyrimidine (5) was prepared starting from 1,1-diamino-2,2-dicyanoethylene (1) and dichloromethylenedimethy limmonium chloride (2). After reacting with α-aminoacidic esters, 5 was converted into a series of new pyrimido[4,5-d]pyrimidines (7), which underwent cyclization to yield substituted 9,10-dihydro-1,3,4,6,7,10-hexaazacyclohepta[de]naphthalen-8(7H)-one
从1,1-二氨基-2,2-二氰基乙烯(1)和二氯亚甲基二甲基氯化铵开始制备4-氨基-5-氯-2,7-双(二甲基氨基)嘧啶[4,5- d ]嘧啶(5)(2)。与α-氨基酸酸酯反应后,将5转化为一系列新的嘧啶并[4,5- d ]嘧啶(7),然后对其进行环化反应,生成取代的9,10-二氢-1,3,4,6,7 ,10- hexaazacyclohepta [ DE ]萘-8(7 ħ) -酮(8)。