Methyl 3-aminopyridine-4-carboxylate → 3-(1,2-Benzoxazol-3-ylamino]pyridine-4-carboxylic acid

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Reaction Steps

The title compound was prepared in 2% yield from 1,2-benzoxazol-3-amine and methyl 3-aminoisonicotinate according to the procedure for Preparation 1C, followed by hydrolysis according to Example 1. 1H NMR (400 MHz, DMSO-d6): δ 7.49 (1H, s), 7.73-7.90 (4H, m), 8.38 (1H, s), 9.62 (1H, s), 11.32 (1H, br s). [M+H] calc'd for C13H9N3O3, 256; found 256.

Provenance & Evidence