Hydrochloric Acid → HCID 22397431, compound

Participants

Reaction Steps

To 4-cyano-5-methanesulfonyl-thiophene-2-carboxylic acid methyl ester (0.5 g) in THF/H2O (3:1; 16 ml) was added LiOH (0.102 g). Hydrochloric acid (2M) was added and the resulting mixture was extracted with ethyl acetate. The extracts were combined and the solvent evaporated to leave a mixture of 4-cyano-5-methanesulfonyl-thiophene-2-carboxylic acid and the title compound. This mixture was used without further purification. 1H NMR (299.944 MHz, DMSO-D6) δ 3.62 (3H, s), 7.99 (1H, s).

Provenance & Evidence