Sodium Chloride → HCID 4362638, compound

Participants

Reaction Steps

1-Benzyl-4-piperidinol (23.98 g), 168.66 g of toluene and 83.56 g of a 30% aqueous solution of NaOH were respectively weighed and placed in a 500-mL four-necked flask. While the mixture was stirred, the flask inside temperature was lowered to 6.7° C. Then, 31.73 g of methanesulfonyl chloride was added dropwise over 4 hours and 30 minutes at a flask inside temperature of 5 to 10° C. Water (33 mL) was added to dissolve the NaCl which had precipitated out in the aqueous phase, and the mixture was separated into the toluene phase and aqueous phase. A toluene solution of 1-benzyl-4-piperidinol methanesulfonate was thus obtained in a yield of 40.3 mole percent.

Provenance & Evidence