Hydrochloric Acid → HCID 18674196, compound

Participants

Reaction Steps

175 mg of 5-(4-fluorophenyl)-3-propionylamino-4-(4-pyridyl)pyrazole and 450 mg of 2,4-bis(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane-2,4-disulfide were added to 30 ml of toluene, followed by heating under reflux for 2 hours. After the reaction mixture was cooled, 10% hydrochloric acid and ethyl acetate were added thereto. The aqueous layer was separated, neutralized with a saturation solution of sodium hydrogen carbonate, and extracted with chloroform-methanol (5:1). After the organic layer was dried over anhydrous magnesium sulfate, the solvent was distilled off under reduced pressure. The resulting residue was purified by silica gel thin-layer chromatography (using chloroform-methanol (10:1) as the developing solvent). Thus, 113 mg (61% yield) of the title compound was obtained as pale-yellow crystals.

Provenance & Evidence