The pyrimidyl heterocycle is a widely presented subunit in numerous pharmaceuticals, agrochemicals, supramolecules, natural products, and ultimately pyrimidine and purine bases such as the ribo- and deoxyribonucleosides. 1 The syntheses of these pyrimidine entities have attracted extensive attention. The most commonly used methods for the preparation of pyrimidine derivatives are those in which the pyrimidine ring is constructed by condensation of two or ...
