Multicomponent Synthesis and Evaluation of New 1,2,3-Triazole Derivatives of Dihydropyrimidinones as Acidic Corrosion Inhibitors for Steel

作者：Gonzalez Olvera Rodrigo; Roman Rodriguez Viridiana; Negron Silva Guillermo E^*; Espinoza Vazquez Araceli; Javier Rodriguez Gomez Francisco; Santillan Rosa

来源：Molecules, 2016, 21(2): 250.

DOI：10.3390/molecules21020250

• multicomponent synthesis
• dihydropyrimidinone
• 1
• 2
• 3-triazole
• corrosion inhibitor
• steel

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.

• 出版日期2016-2