Triethylamine → HCID 7335479, compound

Participants

Reaction Steps

Triethylamine (7.64 g) was added to a suspension of L-proline methyl ester hydrochloride (5 g) and 2-nitrobenzenesulfonyl chloride (7.4 g) in dichloromethane (150 ml), under ice cooling with stirring and the resulting mixture was stirred at room temperature for 17 hours. After water-washing the reaction liquid, it was dried over anhydrous magnesium sulfate and then concentrated. The resulting residue was subjected to silica gel column chromatography and then eluted with ethyl acetate/hexane (1/3) to give 9.12 g (yield 96.1%) of the title compound.

Provenance & Evidence