Synthesis of a huge number of 4,4`-bipyrazole derivatives was achieved
employing various synthetic platforms. This chapter outlines all possible routes (such
as cyclocondensation, 1,3-dipolar cycloaddition and dimerization reactions) towards
the construction of the 4,4`-bipyrazole heterocycles.
Keywords: 1, 3-dipolar cycloaddition, 4, 4`-bipyrazoles, Cross-coupling, Cyclocondensation, Hydrazonoyl halides.
