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http://dx.doi.org/10.1002/recl.19590780102DOI: 10.1002/recl.19590780102
Investigations on pyrazine derivatives IV. The preparation and specific oxidation of a number of 2,3-dialkoxy- and 2,3-diaryloxy-quinoxalines
Authors: H. I. X. Mager, W. Berends
Recueil des Travaux Chimiques des Pays-Bas Volume 78, Issue 1, pages 5–21, 1959