Facile preparation of 2-Imino-1,3-selenazolidin-4-one derivatives by reaction of N, N'-disubstituted selenoureas with α-haloacyl halides

2-Imino-1,3-selenazolidin-4-one derivatives were synthesized by the reaction of N,N'-disubstituted selenoureas with u-haloacyl halides in the presence of pyridine.