F. Xu et al., Cyclotrimerization of nitriles catalyzed by SmI2/amines: Synthesis of 2,4,6-trisubstituted-s-triazines, SYN COMMUN, 30(6), 2000, pp. 1017-1022
SmI2 has been found to catalyze a reaction of cyclotrimerization of nitrile
s in the presence of amine as cocatalyst to give 2,4,6-trisubstituted-s-tri
azines effectively under mild reaction conditions. The yield depends on the
structure of nitriles.