Abstract
An efficient large-scale synthesis of 5-aminopyrimidine derivatives is described.
The dihexafluorophosphate salt of a vinamidinium cation important in 5-aminopyrimidine
synthesis has been prepared as a stable, easily purified intermediate. It has been
used to prepare several 2-functionalized aminopyrimidines, valuable as synthetic building
blocks.
Key words
heterocycles - pyrimidines - condensation - amidine - vinamidinium
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