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