Journal of the Chemical Society. Perkin transactions I p. 1433 - 1436 (1981)
Update date:2022-08-11
Topics:
Horton, Julie K.
Stevens, Malcolm F. G.
Photolysis of Diazo-IC in dilute aqueous solution affords products which differ according to the pH of the medium.At pH 1, or pH 7.4 - 12 the product is 2-azahypoxanthine (2): in the intervening pH range the product is 4-carbamoylimidazolium-5-olate (3).In the dark only 2-azahypoxanthine is formed.Photolysis of Diazo-IC in concentrated solution containing citric acid (1 mol equiv.) at pH 2.5 affords a marroon imidazolylazoimidazolium olate (8) and 2-azahypoxanthine.
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