6-(4-Trifluoromethyl-phenyl)-imidazo[1,2-a]pyridine-3-carboxylic acid → 5-{5-[6-(4-Trifluoromethyl-phenyl)-imidazo[1,2-a]pyridin-3-yl]-[1,2,4]oxadiazol-3-yl}-thiophene-2-sulfonic acid amide

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Reaction Steps

The title compound was prepared from 6-(4-trifluoromethyl-phenyl)-imidazo[1,2-a]pyridine-3-carboxylic acid (example C.35) (153 mg, 0.5 mmol) and N-hydroxy-5-sulfamoyl-thiophene-2-carboxamidine (example B.2) (166 mg, 0.75 mmol) according to general procedure II. Obtained after trituration with water and further purification by crystallization (heptane/diethyl ether) as an off-white solid (179 mg, 83%). MS (ISP) 492.2 [(M+H)+]; mp 280° C.

Provenance & Evidence