Potassium Carbonate → HCID 20339425, compound

Participants

Reaction Steps

A solution of 2,3,4,4a-tetrahydro-1H-pyrazino[1,2-a]quinoxalin-5(6H)-one 6.1 g. (0.03 mole) and 4.92 g. (0.03 mole) of 4-picolyl chloride hydrochloride, 10 g. of potassium carbonate, 0.5 ml. of tirethylamine in 200 ml. of acetone was refluxed for 40 hours with stirring. The reaction mixture was allowed to cool and the precipitate was filtered and washed with acetone. The acetone was removed under reduced pressure and the oily residue was dissolved in methylene chloride. This solution was washed with water, dried over magnesium sulfate, filtered and the solvent removed. The residue was dissolved in ethanol and treated with dry hydrogen chloride. The product hydrogen chloride was filtered and recrystallized from methanol to give 2 g. of the title compound as the dihydrochloride salt, m.p. 253°-255° C.

Provenance & Evidence