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Trichloroisocyanuric Acid (TCCA) is employed as a novel and highly efficient catalyst

Furthermore, cyclocondensation of benzonitrile with 2-aminoethanethiol was performed in the presence of different amounts of Trichloroisocyanuric Acid (TCCA). The effects of temperature and solvent were also investigated. The best result was obtained with1:1.2:0.01 molar ratios of benzonitrile:2-aminoethanethiol:TCCA at 110 °C under solvent-free conditions. Various aromatic and heteroaromatic nitriles were reacted with 2-aminoethanethiol in the presence of TCCA under the optimum reaction conditions. The corresponding 2-substituted thiazolines were generated in good to excellent yields.
In order to show the superiority of Trichloroisocyanuric Acid (TCCA) over other catalysts, the results obtained in the present study for the synthesis of 2-phenyloxazoline are compared with some other results reported in the literature in Table III. It is noteworthy that the catalytic activity of TCCA was greater than those of some active Lewis acids or solid acids, as given in Table III. In summary, Trichloroisocyanuric Acid (TCCA) was employed as a novel and highly efficient catalyst for the synthesis of 2-oxazolines, 2-imidazolines and 2-thiazolines from nitriles in high yields. This homogeneous catalyst is commercially available, inexpensive and non-volatile and is a chemical commonly found in organic laboratories. Furthermore, the efficiency and chemoselectivity of the protocol was also investigated in the selective preparation of aromatic and heteroaromatic mono- and bis-oxazolines, mono-imidazolines and bis-thiazolines. In addition, the absence of hazardous and non-green solvents, easy work-up and approximately short reaction times are another noteworthy advantage of the reported protocols. 
Trichloroisocyanuric Acid (TCCA) is an important chlorinated isocyanurate products. Here we introduced the development of TCCA, the physical and chemical properties, production technology, production safety control measures, pollution control, disinfection, sterilization and bleaching applications. Reviewed the main method with urea as raw materials to produce TCCA, as well as extensive use of its excellent performance generated. TCCA is an important chlorinated isocyanurate products. Introduced the development of TCCA, the physical and chemical properties, production technology, production control measures, disinfection, sterilization and bleaching applications.