23300-97-2Relevant academic research and scientific papers
ELECTROCHEMICAL FORMATION OF INDAZOLES FROM TROPONE TOSYLHYDRAZONES: ELECTROCHEMICAL OXIDATIONS OF SODIUM SALTS OF TOSYLHYDRAZONES OF TROPONE AND 2-PHENYLTROPONE
Saito, Katsuhiro,Hattori, Masashi,Sato, Tatsuji,Takahashi, Kensuke
, p. 129 - 134 (2007/10/02)
Electrochemical oxidations of the sodium salts of tropone and 2-phenyltropone tosylhydrazones afforded 2-tosyl-2H-indazole and 1-tosyl-7-phenyl-1H-indazole, respectively.The reactions proceeded through the cyclizations of the corresponding hydrazyl radica
REACTIONS OF SODIUM SALTS OF TOSYLHYDRAZONE COMPOUNDS WITH SILVER CHROMATE. FORMATION OF INDAZOLE, PYRAZOLE, AND BENZONITRILE DERIVATIVES.
Saito,Toda,Mukai
, p. 1567 - 1569 (2007/10/02)
Tropone tosylhydrazone sodium salt was allowed to react with silver chromate to give 2-tosyl-2H-indazole. The reaction is thought to proceed through the cyclization of the hydrazyl radical intermediate. Under the same conditions, sodium salts of m-nitrobenzaldehyde tosylhydrazone (5), benzylideneacetone tosylhydrazone derivatives (7a and 7b), and beta -ionone tosylhydrazone (9) reacted to yield m-nitrobenzonitrile from 5 and pyrazole derivatives from 7a, b, and 9, respectively. m-Nitrobenzonitrile is formed by homolytic fission of nitrogen-nitrogen bond of 5. Formation of the pyrazole derivatives can be explained by intramolecular 1,3-dipolar additions of the corresponding diazo intermediates.
