Huang Bin
2011
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Journal
Fine and Specialty Chemicals
Abstract
3,3',5,5'-Tetramethylbenzidine was synthesized by using 2,6-dimethyl aniline as the starting material via salting, bromination, hydrolysis and coupling. The total yield of four steps was 46. 56%. Structure of the product was confirmed by ~1HNMR. This method has many advantages, such as easy operation and low cost, which can be feasible to large scale preparation.