2,3-Dichloropyrazine → HCID 10134283, compound

Participants

Reaction Conditions

Reaction Steps

To 2,3-dichloropyrazine (0.160 gm, 0.00107 mol) was added 4-fluorobenzyl 4-(aminomethyl)piperidine-1-carboxylate (INTERMEDIATE 2C) (0.86 gm, 0.00322 mol) and the resulting mixture heated under nitrogen at 110° C. for 30 min. The reaction was cooled, diluted with ethyl acetate (5 mL), and washed with 10% aqueous sodium/citric acid pH=5.2 (3×30 mL), and 10% aqueous sodium bicarbonate (30 mL). The ethyl acetate extract was dried over sodium sulfate, filtered through a pad of silica and concentrated to an oil. Crystallization from ether/hexane gave 4-[(3-chloro-pyrazin-2-ylamino)-methyl]-piperidine-1-carboxylic acid 4-fluoro-benzyl ester.

Provenance & Evidence