Optimization of Synthesis of 2,4-Dinitrophenylhydrazones under Carbon Dioxide Pressure

Catalytic synthesis of 2,4-dinitrophenylhydrazones formed in the aqueous reaction mixture of aliphatic and aromatic carbonyl derivatives with 2,4-dinitrophenylhydrazine in the presence of carbonic acid protons under pressure of the CO₂-H₂O a steam-gas mixture was studied for the example of synthesis of p-quinone-mono-2,4-dinitrophenylhydrazone.