Hydrogen Peroxide → HCID 19035966, compound

Participants

Reaction Steps

9-Hydroxy-9-phenyl-9H-indeno[1,2-b]pyrazin-3(4H)-one (0.24 g) was stirred with a mixture of acetic acid (3 ml), acetic anhydride (3 ml) and hydrogen peroxide (0.42 ml) at room temperature for 3 weeks. The resulting very complex mixture was evaporated and treated with water resulting in precipitation of 200 mg of a crystalline mixture. Purification on silica gel column using methylene chloride/methanol: (9/1) as eluent resulted in 70 mg of a compound which was recrystallized from ethanol. Yield 40 mg of the title compound. M.p. 220°-223° C. MS showed the molecular ion 318 and a degradation pattern in accordance with the title compound. 1H-NMR (CDCl3 /CD3OD: 9/1, δ): 2.4-2.5 (3H, s), 7.3-7.6 (9H, m), 7.9-8.0 (1H, m), 8.2 (1H, s).

Provenance & Evidence