1 Benzothiazole derivatives have been found many applications in medicine and pesticides for their unique biological activity.

2 The adsorption of several derivatives of benzothiazole and phenyl mercaptotetrazole on silver was investigated by linear sweep voltammetry.

3 New benzimidazole, benzoxazole and benzothiazole compounds, process for preparing them and pharmaceutical compositions containing them.

4 Benzothiazole derivatives with antibacterial, anti-cancer activity, fluorescence and photochromic activity, are widely applied in physical and optical research and development.

5 Seeing from the current study, the imaging agents of benzothiazole derivatives labeled with 11C, 18F or 123I have excellent characteristics, and are promising for diagnosing AD in clinic.

6 In this paper, the work includes the following two aspects:We optimized the method of prepared for o-aminothiophenol used for synthesis of 2 -substituted benzothiazole compounds commonly.

7 This paper through a series of experiments on the optimization of conditions, establishes a novel and effective method to catalytic synthesis of 2-substituted benzothiazole.

8 The physical properties of rubber accelerator 2 - mercapto benzothiazole and main methods for its preparation are introduced.

9 The dissertation describes some selective methods for the synthesis of alkenyl sulfides and benzothiazole derivatives.