<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The polarographic behavior of 1-(Toluenyl sulfonyl)-3-amino-4-(2'-nitro aryl hydrazono)-2-pyrazolin-5-one and 1-(Toluenyl sulfonyl)-3-amino-4-(4'-nitro aryl hydrazono)-2-pyrazolin-5-one is investigated in the acidic as well as in basic media. The compounds gave two well defined, diffusion controlled, irreversible waves in Britton-Robinson buffers of pH range 1.0-7.0. In alkaline medium three well defined, diffusion controlled and irreversible waves were obtained. Effect of various solvents, cations and surfactants on the reduction is presented. The effect of substituent and its correlation with the Hammett substituent constant (δ) is detailed. Based on the results, a detailed reduction mechanism in acidic as well as basic media is proposed.</p></abstract>

The polarographic behavior of 1-(Toluenyl sulfonyl)-3-amino-4-(2'-nitro aryl hydrazono)-2-pyrazolin-5-one and 1-(Toluenyl sulfonyl)-3-amino-4-(4'-nitro aryl hydrazono)-2-pyrazolin-5-one is investigated in the acidic as well as in basic media. The compounds gave two well defined, diffusion controlled, irreversible waves in Britton-Robinson buffers of pH range 1.0-7.0. In alkaline medium three well defined, diffusion controlled and irreversible waves were obtained. Effect of various solvents, cations and surfactants on the reduction is presented. The effect of substituent and its correlation with the Hammett substituent constant (δ) is detailed. Based on the results, a detailed reduction mechanism in acidic as well as basic media is proposed.

Electrochemical studies of certain nitro substituted pyrazolin-5-ones

Malla Reddy College of Engineering, Hyderabad, A.P., India

ICFAI Foundation for Higher Education, Hyderabad, A.P., India

C.M.R. Institute of Technology, Hyderabad, A.P., India

Sri Krishnadevaraya University, Anantapur, A.P., India

Ovidius University Annals of Chemistry

{"article-title":"Electrochemical studies of certain nitro substituted pyrazolin-5-ones"}

The polarographic behavior of 1-(Toluenyl sulfonyl)-3-amino-4-(2'-nitro aryl hydrazono)-2-pyrazolin-5-one and 1-(Toluenyl sulfonyl)-3-amino-4-(4'-nitro aryl...

Electrochemical studies of certain nitro substituted pyrazolin-5-ones

Published Online: Mar 22, 2013

Page range: 5 - 20

DOI: https://doi.org/10.2478/v10310-012-0001-x

Keywords
Pyrazolin-5-ones, Polarographic behavior, Effect of various parameters, Reduction mechanism

This content is open access.

Electrochemical studies of certain nitro substituted pyrazolin-5-ones

Published Online: Mar 22, 2013

Page range: 5 - 20

DOI: https://doi.org/10.2478/v10310-012-0001-x

KeywordsPyrazolin-5-ones, Polarographic behavior, Effect of various parameters, Reduction mechanism

This content is open access.

Keywords
Pyrazolin-5-ones, Polarographic behavior, Effect of various parameters, Reduction mechanism