Photolysis of a quinoxaline-di-N-oxide

✍ Scribed by Makhluf J. Haddadin; Costas H. Issidorides

• Book ID: 104223729
• Publisher: Elsevier Science
• Year: 1967
• Tongue: French
• Weight: 135 KB
• Volume: 8
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)90589-6

✦ Synopsis

Current interest in the photochemistw of nitrones and heterosmmatic N-oxides (1) prapts us to report our findings on the photolysis of a quinoxaline-di-N-oxide derivativs.

Exposure to sunlight of a methanolio solution of P-bensoyl-Jphewlqa nualine-did-oxide (2) (I) in a Pyrex flask for twelve hours, resulted in the prsoipitstion of l,j-dibensoylbenzimidasolone (II) in 709b yield. Product II was identioal (mixture m.p. and superimposable infrsred spectrum) with sn authentic sample of 1,3-dibenzoylbenziridazolone prepsred by the method of Eeller (3). As expected, hydrolysis of II in base gave the known benzimidezolone and two molea of bensoio soid.