Triethylamine → HCID 86642664, compound

Participants

Reaction Steps

A mixture 2-[4-(dibenzylamino)-2-methylpiperidin-1-yl]ethanol (Intermediate 216, 660 mg, 1.9 mmol) in dry dichloromethane (6 mL) and triethyl amine (0.375 mL, 2.7 mmol) was treated at 0° C. with methanesulfonyl chloride (0.175 mL, 8.4 mmol). After 45 minutes the reaction was complete by TLC (chloroform/methanol 6:1, rf 0.54). Potassium phosphate buffer (pH 7, 1M, 25 mL) was added, dichloromethane was removed under reduced pressure and it was extracted with ice cold ethyl acetate (2×100 mL) and dried over sodium sulfate. The solvent was removed under reduced pressure and the crude preparation of the mesylate was used without delay for the next step.

Provenance & Evidence