Sodium Hydroxide → HCID 54132308, compound

Participants

Reaction Steps

(R)-N-(2-(3-(3-Chlorophenyl)-3-phenyl-2-propen-1-yloxy)ethyl)-3-piperidinecarboxylic acid ethyl ester (3.0 g, 7.0 mmol) dissolved in 96% ethanol (10 ml) and a 12 N sodium hydroxide solution (1.75 ml) was added. The reaction mixture was stirred at room temperature for 5 h. The solvent was evaporated in vacuo and dichloromethane was added (100 ml). A concentrated hydrochloric acid solution (2.9 ml) was added with cooling on an ice-bath. The phases were separated, and from the organic phase the solvent was evaporated in vacuo. Water (100 ml) was added to the residue and the aqueous solution was washed with small portions of ethyl acetate. The aqueous phase was reduced in vacuo to approx. 50 ml and dichloromethane (250 ml) was added. A 4 N sodium hydroxide solution was added until the pH was measured as 8.3. The phases were separated and the organic phase was dried over sodium sulphate. The solvent was evaporated in vacuo to give 2.7 g (96%) of the title compound.

Provenance & Evidence