Hydrochloric Acid → HCID 21200533, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 1.5 g of the compound obtained in step B of EXAMPLE 21, 1.5 g of 4-acetamido-4-phenylpiperidine p-toluenesulfonate and 1.6 g of K2CO3 in 4 ml of DMF is heated at 80° C. for 3 hours. After cooling, the reaction mixture is poured into water and extracted with an AcOEt/ether mixture (50/50; v/v), the organic phase is washed with water and dried over MgSO4 and the solvent is evaporated off under vacuum. The residue is chromatographed on silica H using a DCM/MeOH mixture (100/3; v/v) as the eluent. The product obtained is dissolved in DCM, a saturated solution of gaseous HCl in ether is added until the pH is 1, and the solvent is evaporated off under vacuum to give 0.66 g of the expected product after crystallization from a DCM/pentane mixture. M.p.=165-170° C.

Provenance & Evidence