26502-59-0Relevant academic research and scientific papers
Efficient synthesis of 1-aryl-4-[(ethoxycarbonyl)oxy]-1H-pyrazole-3- carboxylates
Korneev, Sergei M.,Polukeev, Valery A.,Jones, Peter G.
, p. 985 - 991 (2013)
Two-step synthesis of N-aryl 4-[(ethoxycarbonyl) oxy]-1H-pyrazole-3- carboxylates is achieved starting from the commercially available ethyl 4-chloroacetoacetate and aromatic amines. Azo coupling followed by cyclization with ethyl chloroformate-DMAP pair
SUBSTITUENT EFFECTS ON ACIDITIES AND TAUTOMERIC STRUCTURES OF 1-ARYL-3-ETHOXYCARBONYL-4-PYRAZOLONES AND THEIR 5-ARYLAZO DERVATIVES.
Shawali, Ahmad S.,Hassaneen, Hamdi M.,Hanna, Mokhtar A.
, p. 697 - 708 (2007/10/02)
Two series of 1-aryl-3-ethoxycarbonyl-4-hydroxy-pyrazoles (1) and 1-(m-chlorophenyl)-3-ethoxycarbonyl-4-hydroxy-5-arylazopyrazoles (2) have been prepared and their acidities determined spectrophotometrically at 25 deg C and ionic strength of 0.1 in 60 vol
