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Four novel benzotriazole derivatives 1-(Chloromethyl)-1H-Benzotriazole; 1, N-(benzo[e] [1, 2, 4]triazin-4(3-H)-ylmethylbenzenamine; 2, 1-((1-H-benzo[d][1,2,3]triazol-1-yl)methyl) hydrazine; 3 and 1-((1-H-benzo[d][ 1,2,3]triazol-1-yl)methyl) phenyl hydrazine; 4 were synthesized through micro wave irradiation (MWI) method. These derivatives were characterized and tested for anticorrosive action on iron coupons in 0.5M acidic medium at different concentration. The anti-corrosive study was done using weight loss method and corrosion rate (CR) analysis. All the synthesized derivatives gave remarkable corrosion protection effect. Major outcome of the study shows corrosion inhibitor efficiency of derivatives follows order 3, 4, 2 and 1 at 100mg/L, 3, 2, 4 and 1 at 200mg/L, 3, 4, 2 and 1 at 300mg/L. Compound 1-((1-H-benzo[d][1,2,3]triazol-1-yl)methyl)hydrazine; 3 emerges as leader in all concentration in this study while 1-(Chloromethyl)-1H-Benzotriazole; 1, shows moderate impact. This study imparts an understanding for the new class of anticorrosive benzotriazole derivatives which can be of industrial use.

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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.