de la Hoz, A; Sanchez-Migallon, A; Pelado, BT; Ramirez, JR

[de la Hoz, Antonio; Sanchez-Migallon, Ana; Pelado, Beatriz T.; Ramirez, Jose R.] Univ Castilla La Mancha, Fac Ciencias & Tecnol Quim, E-13071 Ciudad Real, Spain

An efficient and green synthesis of 2,4-dimethoxybenzyaminotriazines is described, by reaction of disubstituted triazines with 2,4-dimethoxybenzylamine under microwave irradiation and in solvent-free conditions. NMR spectroscopy has been used to determine the free energy of activation of the restricted rotation of the ArylN-triazine bond that is a slow process at room temperature. Contrarily, the benzylN-triazine bond shows a rapid rotation at room temperature.