Multicomponent synthesis and evaluation of new 1,2,3-triazole derivatives of dihydropyrimidinones as acidic corrosion inhibitors for steel
Por:
Gonzalez-Olvera, Rodrigo, Roman-Rodriguez, Viridiana, Negron-Silva, Guillermo E., Espinoza-Vazquez, Araceli, Javier Rodriguez-Gomez, Francisco, Santillan, Rosa
Publicada:
1 feb 2016
Resumen:
An efficient one-pot synthesis of 1,2,3-triazole derivatives of dihydropyrimidinones has been developed using two multicomponent reactions. The aldehyde-1,2,3-triazoles were obtained in good yields from in situ-generated organic azides and O-propargylbenzaldehyde. The target heterocycles were synthesized through the Biginelli reaction in which the aldehyde-1,2,3-triazoles reacted with ethyl acetoacetate and urea in the presence of Ce(OTf)3 as the catalyst. The corrosion inhibition of steel grade API 5 L X52 in 1 M HCl by the synthesized compounds was investigated using the electrochemical impedance spectroscopy technique. The measurements revealed that these heterocycles are promising candidates to inhibit acidic corrosion of steel. © 2016 by the authors.
Filiaciones:
Univ Autonoma Metropolitana Azcapotzalco, Dept Ciencias Basicas, Av San Pablo 180, Ciudad De Mexico 02200, DF, Mexico
Univ Nacl Autonoma Mexico, Fac Quim, Dept Ingn Met, CU, Ciudad De Mexico 04510, DF, Mexico
Inst Politecn Nacl, Ctr Invest & Estudios Avanzados, Dept Quim, Apartado Postal 14-740, Ciudad De Mexico 07000, DF, Mexico
|