Abstract
Abstract The pyrimidine nucleosides (1–3), on reaction with bromine and dibutyltin oxide in appropriate alcohols gave the titled compounds (5–7), which were characterised by derivatisation to 8–10, 1-H and 13C NMR. The reported method of bromination of nucleosides in presence of DBTO under neutral and mild conditions facilitates the isolation of acid-labile 6-alkoxy-5-bromo-5,6-dihydro addition compounds of nucleosides which are otherwise difficult to obtain.
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