1,3,4 triazolo 1,5-a pyridine (1,3,4 TRIAZOLO 1,5-a PYRIDINES USED AS INTERMEDIATE PRODUCTS FOR THE SYNTHESIS OF DYES)

摘要

The present invention relates to triazolopyridine of the general formula (I):;Wherein R ¹ is unsubstituted or substituted C ₁ to C ₂₀ -alkyl, unsubstituted or substituted phenyl or unsubstituted or substituted mercapto, R ² is hydrogen, formyl, nitroso, cyano or substituted Methyl, R ³ is unsubstituted or substituted C ₁ -C ₄ -alkyl, C ₁ -C ₄ -alkoxycarbonyl or phenyl, R ⁴ is hydrogen, cyano, carbamoyl, carboxyl or C _1- C ₄ -alkoxycarbonyl, R ⁵ is a radical of a hydroxyl, mercapto, halogen, unsubstituted or substituted amino or CH-acidic compound.;The invention also relates to a process for the preparation of triazolopyridine.