I. Gelling, D. Wibberley
1969
Citations
0
Influential Citations
5
Citations
Journal
Journal of The Chemical Society C: Organic
Abstract
2,6,8-Trimethyl-, 6,8-dimethyl-2-phenyl-, and 2-phenyl-pyrido[3,4-d][1,3]oxazin-4-ones have been prepared from the corresponding 3-aminopyridine-4-carboxylic acids. Treatment of the pyrido-oxazines with amines yielded the corresponding pyrido[3,4-d]pyrimidines or intermediate 3-aminopyridine-4-carboxamides. Hydrazinolyses and methylations of a number of pyrido[3,4-d]pyrimidin-4(3H)-ones and -pyrimidine-2,4(1H,3H)-diones are described. Some n.m.r. and mass spectra are discussed.