A new route to N2??and N3??substituted??2, 3??diaminopyridines. Synthesis of 1??and 3??alkoxycarbonyl??v??triazolo [4, 5??b] pyridines

GP Zecchini, I Torrini…

Index: Journal of Heterocyclic Chemistry, , vol. 22, # 2 p. 313 - 318

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Citation Number: 8

Abstract

... iV-substituted-2,3-diaminopyridines are intermediates in the synthesis of some fused heterocyclic systems as imid ... 13 and 15 can be distinguished by nmr on the basis of the characteristic chemical shifts of ... 3H, s, 0CH3) 1.57 (3H, t, J = 7.5 Hz, СН2-СЯ3), 4.74 (2H, q, J = 7.5 Hz ...