title: Multicomponent Synthesis and Evaluation of New 1,2,3-Triazole Derivatives of Dihydropyrimidinones as Acidic Corrosion Inhibitors for Steel.
abstract: 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.
authors.affiliation: Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, Av. San Pablo No. 180, Ciudad de México, C.P. 02200, Mexico. rodrigo_glezo@hotmail.com.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: González-Olvera
authors.affiliation: Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, Av. San Pablo No. 180, Ciudad de México, C.P. 02200, Mexico. vacuidadd@gmail.com.
authors.forename: Viridiana
authors.initials: V
authors.lastname: Román-Rodríguez
authors.affiliation: Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, Av. San Pablo No. 180, Ciudad de México, C.P. 02200, Mexico. gns@correo.azc.uam.mx.
authors.forename: Guillermo E
authors.initials: GE
authors.lastname: Negrón-Silva
authors.affiliation: Departamento de Ingeniería Metalúrgica, Facultad de Química, Universidad Nacional Autónoma de México, C.U., Ciudad de México, C.P. 04510, Mexico. arasv_21@hotmail.com.
authors.forename: Araceli
authors.initials: A
authors.lastname: Espinoza-Vázquez
authors.affiliation: Departamento de Ingeniería Metalúrgica, Facultad de Química, Universidad Nacional Autónoma de México, C.U., Ciudad de México, C.P. 04510, Mexico. fxavier@hotmail.com.
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: Rodríguez-Gómez
authors.affiliation: Departamento de Química, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Apartado Postal 14-740, 07000 Ciudad de México, Mexico. rsantill@cinvestav.mx.
authors.forename: Rosa
authors.initials: R
authors.lastname: Santillan
mesh_terms: D001386:Azides / Q000737:chemistry; D001547:Benzaldehydes / Q000737:chemistry; D002384:Catalysis; D003343:Corrosion; D011744:Pyrimidinones / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D013232:Steel / Q000737:chemistry*; D014230:Triazoles / Q000138:chemical synthesis / Q000737:chemistry*; D014508:Urea / Q000737:chemistry
chemical_list: D001386:Azides; D001547:Benzaldehydes; D011744:Pyrimidinones; D014230:Triazoles; D013232:Steel; D014508:Urea; C032175:benzaldehyde
keywords: 1,2,3-triazole; corrosion inhibitor; dihydropyrimidinone; multicomponent synthesis; steel