First Synthesis of 2-Amino-5-hydroxy-4H-chromene-3-carbonitriles from 4-(2-Pyridylazo)resorcinol

V. V. Dotsenko^{a, b}^,*, E. A. Varzieva^a, D. S. Buriy^a, N. A. Aksenov^b, and I. V. Aksenova^b

^aKuban State University, Krasnodar, 350040 Russia

^bNorth Caucasus Federal University, Stavropol, 355009 Russia

email: *victor_dotsenko_@mail.ru

Received 6 September, 2022

Abstract— 4-(2-Pyridylazo)resorcinol (PAR) sodium salt reacts with aromatic aldehydes and malononitrile in aqueous ethanol to form 2-amino-4-aryl-5-hydroxy-6-(2-pyridylazo)-4H-chromene-3-carbonitriles.

Keywords: 4-(2-pyridylazo)resorcinol (PAR), malononitrile, 2-amino-4H-chromene-3-carbonitriles, 6-(2-pyridylazo)chromenes

DOI: 10.1134/S1070363222110081