82228-74-8Relevant articles and documents
Stereochemistry of Aroylphosphonate Phenylhydrazones and Their Conversion to 1H-Indazole-3-phosphonates
Kaushik, M. P.,Lal, B.,Raghuveeran, C. D.,Vaidyanathaswamy, R.
, p. 3503 - 3505 (2007/10/02)
Reaction of phenylhydrazine and (2,4-dinitrophenyl)hydrazine with dialkyl aroylphosphonates gives exclusively the Z isomers of the arylhydrazones 5.Heating 5 in acetic acid produces an equilibrium mixture of 5 and the E isomers 6.Oxidation of phenylhydraz