An efficient one-pot synthesis of 6-alkoxy-8,9-dialkylpurines via reaction of 5-amino-4-chloro-6-alkylaminopyrimidines with N,N-dimethylalkaneamides and alkoxide ions
作者:Pier Giovanni Baraldi、Asier Unciti Broceta、Maria Josè Pineda de las Infantas、Juan Josè Dı̀az Mochun、Antonio Espinosa、Romeo Romagnoli
DOI:10.1016/s0040-4020(02)00867-0
日期:2002.9
ines has been accomplished by the cyclization of the corresponding intermediate 5-amino-4-chloro-6-(alkylamino)pyrimidines promoted by alkoxides and various N,N-dimethyl amides, where the latter act as solvent–reagents. By this three-component condensation reaction we are able to introduce an alkyl group in the 8 position of the purine ring with the concomitant nucleophilic replacement of the 6-chloro
许多新的6-烷氧基-8,9-(二取代)嘌呤的合成是通过将相应的中间体5-氨基-4-氯-6-(烷基氨基)嘧啶经醇盐和各种N促进的环化来完成的,N-二甲基酰胺,后者用作溶剂-试剂。通过这种三组分缩合反应,我们能够在嘌呤环的8位引入烷基,同时用烷氧基部分亲核取代6-氯。