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Phase transfer catalysis(PTC) is a method wildly used in organic synthesis. Among the catalysts us- ed,quaternary ammonium salts were usually the can- didates.In this context,we' ll explore the synthes- is of 2-mercaptobenzimidazole through the reaction of o-phenylenediamine and carbon disulfide promot- ed by quaternary ammonium salt in the two-phase s- ystem.We'll discuss the effects of some important variables such as agitating speed,type of solvent and concentration of base,etc..
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