Acetic Acid → Ethyl 3-bromo-6-cyano-2-methyl-4H-thieno[3,2-b]pyrrole-5-carboxylate

Participants

Reaction Steps

Ethyl 6-cyano-2-methyl-4H-thieno[3,2-b]pyrrole-5-carboxylate (0.3 g), N-Bromosuccinimide (0.24 g) and acetic acid (2.5 mL) were dissolved in chloroform (5.0 mL) and the mixture was stirred at room temperature for 1 hour. To the reaction solution was added saturated sodium hydrogen carbonate aqueous solution. The organic layer was separated and concentrated under reduced pressure. The obtained residue was washed with diethyl ether, and dried under reduced pressure to give the title compound (0.20 g).

Provenance & Evidence