Efficient pyrimidine N-1-alkylation via activation of electron rich olefins with oxoammonium salts: synthesis of methoxy TEMPO substituted pyrimidine nucleoside analogs.

Our work outlines the use of oxoammonium salts in a formal 1,2 addition process to olefins giving nucleoside analogs as products. Specifically, oxoammonium salts can be added to a solution of olefin and silylated heterocycle to give Methoxy TEMPO substituted nucleoside analogs after hydrolytic workup and chromatographic purification.