Acetic Acid → N9-(3,5-dichloro-4-pyridyl)-6-difluoromethoxybenzo[4,5]furo[3,2-c]pyridine-9-carboxamide

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Reaction Steps

To a well stirred solution of 4-Nitrophenyl 6-difluoromethyloxybenzo[4,5]furo[3,2-c]pyridine-9-carboxylate (6.0 mg, 0.015 moles) and 4-amino-3,5-dichloropyridine (4.9 mg, 0.030 moles) in DMF (50.0 mL) was added sodium hydride (60% dispersion in mineral oil) (900 mg, 0.0225 moles) at −5° C. and stirred for 30-40 minutes. Excess of DMF was removed under reduce pressure, the residue obtained was diluted with water (500 mL) and acidified to pH 5-6 with acetic acid. The solid obtained was filtered, washed with water and dried to afford crude product (5.6 g). Purification thorough silica gel column using 25 Methanol in chloroform as eluent gave 2.7 g product as off-white solid.

Provenance & Evidence