Diisopropylethylamine → Ethyl 1-(2-thiopheneacetyl)-4-methyl-3-piperidinecarboxylate

Participants

Reaction Steps

This reaction was run in the same manner as ethyl 1-benzoyl-3-piperidinecarboxylate, starting with ethyl 4-methyl-3-piperidinecarboxylate (531.8 mg; 3.11 mmol), diisopropylethylamine (600 μl; 3.44 mmol), and thiopheneacetyl chloride (382 μl; 3.11 mmol). The crude product was purified by chromatography on silica eluting with 50% ethyl acetate/50% hexane, giving ethyl 1-(2-thiopheneacetyl)-4-methyl-3-piperidinecarboxylate (681.2 mg) as a yellow oil. MS m/z (positive ion) 397 (MH++Et3N; 70), 296 (MH+; 100).

Provenance & Evidence