Cyclization of 2-Aminopyridine Derivatives. I. Substituted Ethyl 2-Pyridylaminomethylenemalonates1, 2
GR Lappin
Index: Lappin Journal of the American Chemical Society, 1948 , vol. 70, p. 3348
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Citation Number: 78
Abstract
The work of Seide3 and of Mangini and Colonna4 has shown that two modes of cyclization exist for N-2-pyridyl benzoylacetamides. The amide derived from 2-aminopyridine gave 4- phenyl-2H-pyrido [l, 2-a] pyrimidine-2-one3 while that derived from 2; 6-diaminopyridine gave 2-hydroxy-4-phenyl-7-amino-1, 8-naphthyridine. 4 Similar results have been observed in other such cyclization reactions; for example, it has been shown6 that the reaction of ...
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