Effect of benzyl substitution at different sites on the inhibition performance of pyrimidine derivatives for mild steel in highly acidic solution

Three pyrimidine derivatives, 6-amino-2-(benzylthio)-4(3H)-pyrimidinone (BTP-1), 6-amino-3-benzyl-2-(benzylthio)-4(3H)-pyrimidinone (BTP-2) and 6-(benzyloxy)-2-(benzylthio)-4-pyrimidinamine (BTP-3), were synthesized as corrosion inhibitors for mild steel in 3 M HCl solution. The inhibition performance of these three pyrimidine derivatives was studied by weight loss and electrochemical measurements, surface characterization, and theoretical...