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Kinetics of oxidation of Dyes by N-Chlorosuccinamide(NCS) in acetic acid medium has been done in the presence of hydrochloric acid. The reaction follows first order kinetics with respect to both [NCS], [Substrate] and [HCl]. Increases in ionic strength increases the rate and addition of the reaction product succinamide has a slight retarding effect on the reaction rate. Increase in the dielectric constant of the medium decreases the rate. Activation parameters have been evaluated from Arrhenius plot by studying the reaction at different temperature [40-55 o C] and oxidation products are identified. A most probable reaction mechanism is proposed and an appropriate rate law is deduced to account for the observed kinetic data.

Benzotriazole has been a matter of discussion among scientific community due to its potential characteristics and touched areas such as medicinal, pharmacological, clinical, industrial etc. On screening the literature, this work for the first time gave a comprehensive review on the latest and remarkable developments of benzotriazole derivatives covering multifarious number of activities such as antifungal, antibacterial, anticancer, anthelmintic, antidepressant, antioxidative, antitubercular, antiviral, anticorrosive, plant growth inhibitor, anti-inflammatory, etc. The purpose of this study was to explore its sundry nature, to investigate the most active site and to generate a data base for prominent methods of synthesis for benzotriazole derivatives in a single review article which has not been done before. The investigation through this review article has revealed that, the credit for sundry nature of benzotriazole derivatives goes to 1-position nitrogen in benzotriazoles. The study has put a light on the fact that, when various substituents are added to 1-position nitrogen in benzotriazoles it effectively contributes toward its diverse nature.

The new oxidant N-Chloropicolinamide (NCP) is synthesized by the chlorination of picolinamide using trichloroisocyanuric acid. The physical constant, formal redox potential, element analysis and spectra characterization (IR, UV, 1 H-NMR, C 13 -NMR and mass spectrum) confirms the presence of nitrogen-halogen bond. It is prepared by a simple method giving a high yield in a short period of time. It is found to be a mild and stable oxidant and formal redox potential of N-chloropicolinamide shows that it can be used as an effective source of positive halogen.

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