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

Participants

Reaction Conditions

Reaction Steps

To a solution of ethyl 6-bromo-2-methyl-4H-thieno[3,2-b]pyrrole-5-carboxylate (0.96 g) in N-methylpyrrolidone (10 mL) were added zinc cyanide (1.17 g) and tetrakis(triphenylphosphine)palladium (0.38 g), and the mixture was stirred at 150° C. for 30 minutes using microwave reactor. To the reaction solution was added water and the resulting mixture was extracted with ethyl acetate. The organic layer was concentrated under reduced pressure. The obtained residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate) to give the title compound (0.64 g).

Provenance & Evidence