1-Phenylpiperazine → HCID 19079292, compound

Participants

Reaction Steps

3-methyl-6-[2-(p-toluenesulfonyloxy)ethyl]oxazolo[4,5-b]pyridin-2(3-one of Preparation 15 (210 mg, 1.2 mmol) is dissolved in 1,4-dioxane (8 ml). N-phenyl-piperazine (0.10 ml, 1.38 mmol) and triethylamine (0.18 ml, 1.3 mmol) are added in succession to the reaction mixture. Stirring is maintained at room temperature for 24 hours. After the solvent has been evaporated off under reduced pressure, the residue is taken up in water. Extraction is carried out with dichloromethane and the organic phase is dried over magnesium sulfate and filtered, and then the solvent is evaporated off. The title product is purified by chromatography on silica gel (eluant: dichloromethane/methanol: 95/5). The yield obtained is 91%. ##STR66##

Provenance & Evidence