The Preparation of Acylselenourea and Selenocarbamate Using Isoselenocyanate

Acyl isoselenocyanates were prepared by a reaction of acyl chloride with KSeCN. The acyl isoselenocyanates formed in situ were ready for further reaction without concentration. N-Acyl selenoureas were obtained by a reaction of acyl isoselenocyanates with amines. The reaction of acyl isoselenocyanates with nucleophiles gave the corresponding selenocarbamate. All the compounds were well characterized by using spectral data, such as 13C and 77Se NMR and X-ray diffraction.