Triethylamine → 7-N-(tert-Butoxycarbonyl)-8-(methanesulfonyloxymethyl)-2-(trifluoromethyl) 5,6,7,8-tetrahydro[1,2,4]triazolo[1,5-alpha]pyrazine

Participants

Reaction Conditions

Reaction Steps

To a 0° C. solution of 100 mg (0.31 mmol) of 7-N-(tert-butoxycarbonyl)-8-(hydroxymethyl)-2-(trifluoromethyl)-5,6,7,8-tetrahydro[1,2,4]triazolo[1,5-α]pyrazine in 1.0 mL of dichloromethane was added sequentially 0.047 mL (0.341 mmol) of triethylamine and 0.029 mL (0.372 mmol) of methanesulfonyl chloride. The reaction mixture was stirred at 0° C. and allowed to warm to room temperature for 4 h. Aqueous sodium bicarbonate solution was added, and the resultant mixture was extracted with three portions of dichloromethane. The combined organics were washed with brine, dried over magnesium sulfate, and concentrated to give a yellow oil which was used without further purification. LC/MS 401 (M+1).

Provenance & Evidence