Triethylamine → HCID 17858089, compound

Participants

Reaction Steps

To a solution of 3-hydroxy-1-{4-[1-(p-nitrobenzyloxycarbonyl)-piperidin-4-ylcarbamoyl]-1,3-thiazol-2-yl}azetidine (360 mg, 0.780 mmol) (obtained as described in Reference Example 51(6)) in methylene chloride (18 ml) were added methanesulfonyl chloride (181 μl, 2.34 mmol) and triethylamine (328 μl, 2.34 mmol) in an ice bath. After stirring the mixture in the ice bath for 10 minutes, the mixture was stirred at room temperature for 1 hour. After checking the completion of the reaction, the reaction mixture was partitioned between ethyl acetate and saturated aqueous sodium hydrogencarbonate solution. The organic layer was washed with saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by chromatography on a silica gel column using ethyl acetate→ethyl acetate:methanol (98:2) as the eluant to afford 3-methanesulfonyloxy-1-{4-[1-(p-nitrobenzyloxycarbonyl)-piperidin-4-ylcarbamoyl]-1,3-thiazol-2-yl}azetidine (390 mg, yield 93%) as a pale yellow solid.

Provenance & Evidence