31 Vikash Kumar Balvinder Singh 2008 The present review focus on synthesis of various 2-aminobenzothiazoles derivatives by cyclizing the arylthioureas, 2-aminothiophenol and substituted anilines with the help of different catalysts or agents. Chloroformamidinium Salts; latest and efficient reagent for preparation of 2-amino benzo- thiazole derivatives.