A Facile Synthesis of 1-Monosubstituted and Unsymmetrically 1,3-Disubstituted Uracils

Abstract

Heating of 2,4-bis(trimethylsiloxy)pyrimidine with functionalised alkyl halides in 1,2-dichloroethane in the presence of iodine affords exclusively 1-substituted uracils, which can be benzylated at N-3 with benzyl chloride under phase-transfer catalysis.