Triethylamine → HCID 68888150, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of 7-cyano-6-cyclopropyl-1,2,3,4-tetrahydropyrrolo[1,2-a]pyrazine-8-carboxylic acid amide trifluoroacetic acid salt [200 mg, Example 44(b)] in dry acetonitrile (50 mL) was treated with dry triethylamine (0.16 mL), then with 4-(trifluoromethyl)benzenesulfonyl chloride (142 mg). After stirring at 60° C. for 2.5 hours the reaction mixture was allowed to cool to room temperature and evaporated. The residue was treated with ethyl acetate (40 mL) and water (40 ml). The organic phase was separated, dried over sodium sulfate and evaporated. The residue was subjected to column chromatography on silica eluting with a mixture of ethyl acetate and pentane (1:1, v/v) to give 7-Cyano-6-cyclopropyl-2-(4-trifluoromethylbenzenesulfonyl)-1,2,3,4-tetrahydropyrrolo[1,2-a]pyrazine-8-carboxylic acid amide (109 mg) as a white solid, m.p. 253–256° C.

Provenance & Evidence