Ultrasound induced green synthesis of pyrazolo-pyridines as novel corrosion inhibitors useful for industrial pickling process: Experimental and theoretical approach

By Dohare, Parul; Quraishi, M. A.; Verma, Chandrabhan; Lgaz, H.; Salghi, R.; Ebenso, E. E.
Published in Results in Physics 2019

Abstract

Three pyrazolo-pyridine derivatives namely, (PPs) (4-(4-methoyphenyl)3,5-dimethyl-1,4,7,8-tetrahydrodipyrazolopyridine) (PP-1), 3,5dimethyl-4-phenyl-1,4,7,8-tetrahydrodipyrazolopyridine (PP-2) and (3,5-dimethyl-4-(3-nitrophenyl)-1,4,7,8-tetrahyddrodipyrazolopyridine) (PP-3) having different substituents was synthesized using ultrasound mediated one step multicomponent reactions and evaluated as corrosion inhibitors for mild steel in acidic medium of 1 M HCl. Protection ability of the synthesized PPs was determined using several experimental and computational modeling methods. Results showed that PP-3 having electron withdrawing nitro (

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