Journal of the American Chemical Society

Pyrazines. I. Pyrazine-N-oxides. Preparation and Spectral Characteristics1

B Klein, J Berkowitz

Index: Klein; Berkowitz Journal of the American Chemical Society, 1959 , vol. 81, p. 5160,5163

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Citation Number: 70

Abstract

K-oxides have two characteristic absorptions in the ultraviolet, one at 216 mp and the other at 260 mp. With increasing substitution, a third absorption appears at 295 mp. In the infrared, the compounds exhibit characteristic absorptions of 9-f 0 at 7.4-7.8 and 11.4-11.8 p, The 1, il- dioxides of the pyrazine compounds above as well as several trisubstituted pyrazine compounds have been prepared and characterized. The 1, 4-dioxides also have two ...