Hydrogen Peroxide → HCID 178498666, compound

Participants

Reaction Steps

Methyl 3-[(2-pyridyl)-thiomethyl]-2-quinoxalinecarboxylate-1,4-dioxide (0.03 moles) in 60 ml of acetone was cooled to 0°-5° C. and 50 ml of 2N H2SO4 was added in one portion. This was followed by the dropwise addition of a solution of KMnO4 (0.04 moles) in 150 ml of water over a 20 minute period. The mixture was stirred for about 5 minutes at which time 4 ml of 30% H2O2 was added very carefully dropwise to decolorize the purple solution. The desired product, which had precipitated, was collected by filtration and washed with water. Yield, 8.12 grams (87%); m.p. 154° C. (dec.).

Provenance & Evidence