Hydrochloric Acid → 1-Methyl-4-(1-methyl-4-nitropyrrole-2-carboxamido)pyrrole-2-carboxylic acid

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Reaction Steps

Compound 3 (0.10 g, 0.33 mmol), NaOH (0.7M, 2.4 ml) and ethanol (2.4 ml) were refluxed until the solid dissolved. The red solution was cooled and acidified with concentrated HCl to precipitate the product as a yellow solid. Yield 0.09 g, (88%). 1H NMR (DMSO): δ 12.19 (bs, 1H, OH); 10.18 (s, 1H, NH); 8.15 (d, 1H, J=1.9 Hz); 7.52 (d, 1H, J=1.9 Hz); 7.36 (d, 1H, J=1.9 Hz); 6.78 (d, 1H, J=1.9 Hz); 3.93 (s, 3H); 3.81 (s, 3H).

Provenance & Evidence