Triethylamine → 1-Methanesulfonyl-3,5-dimethylpiperazine

Participants

Reaction Steps

A solution of methanesulfonyl chloride (1.42 mL, 18.4 mmol) in DCM (10 mL) was added dropwise to a solution of 2,6-dimethylpiperazine (2 g, 17.5 mmol) and triethylamine (2.56 mL, 18.4 mmol) in DCM (10 mL) under nitrogen. The mixture was stirred for 30 min. The solvent was removed and the residue was applied to a 5 g aminopropyl SPE cartridge to give the product as a yellow solid (2.3 g), ˜10:1 mixture of cis and trans isomers by NMR.

Provenance & Evidence