HCID 66738506, compound → HCID 52937158, compound

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Reaction Steps

5-[(2-phenyl-5-trifluoromethyl-oxazole-4-carbonyl)-amino]-3′,4′,5′,6′-tetrahydro-2′H-[2,4′]bipyridinyl-1′-carboxylic acid tert-butyl ester (535 mg) from above was dissolved in a mixture of methylene chloride (35 mL) and trifluoroacetic acid (9 mL). The mixture was stirred at room temperature for 2 hrs. The solvents were evaporated and the residues were partitioned between methylene chloride and dilute sodium hydroxide solution. The organic layer was washed with brine and dried over sodium sulfate. Evaporation of solvents gave 2-phenyl-5-trifluoromethyl-oxazole-4-carboxylic acid (1′,2′,3′,4′,5′,6′-hexahydro-[2,4′]bipyridinyl-5-yl)-amide (360 mg) as a solid. LC-MS calcd for C21H19F3N4O2 (m/e) 416.1, obsd 417.1 (M+H). The NMR spectrum obtained on the sample is compatible with its structure.

Provenance & Evidence