Abstract A very simple method for the preparation of several active N-chloro compounds that have extensive applications in organic synthesis, industry, and medicine has been developed. Tetrachloroglycolurils, chloramine-T, N-chlorosaccharin, N-chlorosuccinimide, N- chlorophthalimide, N, N′-dichlorophenobarbital, and N, N′-dichlorobarbital were synthesized by chlorination with trichloroisocyanuric acid under mild reaction conditions at ...