A facile access to polysubstituted bipyrazoles and pyrazolylpyrimidines

摘要

3-(Pyrazol-3-yl)-3-oxo-propanenitrile derivative reacts with several nitrogen nucleophiles to give bipyrazole, pyrazolyloxazole, and pyrazolylpyrimidine derivatives. The structures of the products were confirmed on the basis of their elemental and spectral analyses.