The Preparation of 3-Methyl-6-and-7-carboxy-2-quinoxalones

W BLACKBURN, M DANZIG…

文献索引：Blackburn,W. et al. Journal of Organic Chemistry, 1961 , vol. 26, p. 2805 - 2809

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被引用次数: 11

摘要

3-Methyl-6-carboxyquinoxalone-2 and 3-methyl-7-carboxyquinoxalone-2, their esters, and dihydro derivatives have been prepared by unequivocal procedures. The ambiguous condensation of 3, 4-diaminobenzoic acid with pyruvic acid was demonstrated to give only 3- methyl-7-carbox~~ quinoxalone-2, whereas the ambiguous condensation of ethyl 3, Pdiaminobenzoate with ethyl pyruvate gave eqaal portions of 3-methyl-6- ...