Reaction of 1,2-bis(bromomethyl)naphthalene (I) with diethyl malonate in the presence of NaH in THF provides the cyclopentyl dicarboxylate compound (II). Subsequent saponification of diester (II), followed by thermal decarboxylation leads to acid (III). This is finally coupled with the amino pyrazole (IV) in the presence of EDC to produce the corresponding amide