Ethyl 4-(4-chloro-2-nitrobenzoyl)-3-benzoyl-1H-pyrazole-5-carboxylate → ethyl 4-(4-chloro-2-aminobenzoyl)-3-benzoyl-1H-pyrazole-5-carboxylate

Participants

Reaction Steps

Following a procedure similar to that described in Example 23(d), ethyl 4-(4-chloro-2-nitrobenzoyl)-3-benzoyl-1H-pyrazole-5-carboxylate (1.2 g, 2.81 mmol) was treated with nickel boride to afford crude product. The crude product was purified by flash chromatography eluting with hexanes:ethyl acetate (75:25-50:50) to give the title compound as a solid (620 mg, 56%).

Provenance & Evidence