Methylamine → Methyl 5-methyl-5,6-dihydro-4H-thieno[2,3-c]pyrrole-2-carboxylate

Participants

Reaction Steps

4,5-Bis(chloromethyl)-2-thiophenecarboxylic acid methyl ester (D. J. Zwanenburg and Hans Wynberg, J. Org. Chem., 34, 333-340, (1969)) (520 mg) was dissolved in acetonitrile (600 mL). Methylamine (40% methanol solution, 722 μL) was added thereto, followed by stirring at room temperature for 3 days. The solvent was distilled away under reduced pressure. The residue was purified by silica gel column chromatography (methylene chloride:methanol=1:0→19:1), to thereby give the title compound (176 mg).

Provenance & Evidence