Electric Literature of 38642-74-9, An article , which mentions 38642-74-9, molecular formula is C13H8N2S. The compound – 2-Cyano-phenothiazine played an important role in people’s production and life.
A 2 – cyano phenothiazine preparation method (by machine translation)
The invention relates to a preparation method of 2-cyanophenothiazine. Dehydration reaction is firstly performed, thereby avoiding the complex technical step of performing dehydration refinement after the 2-cyanophenothiazine crude product is generated, and effectively reducing the product decomposition; meanwhile, the 2-cyanophenothiazine generation reaction is performed after dehydration to obviously reduce the recrystallization frequency in the refinement process, so that the recrystallization is only needed once, thereby greatly reducing the loss of the materials and energy sources, lowering the preparation cost and enhancing the reaction yield; and thus, the yield of the preparation method can reach 90.3% or above. Besides, the purity of the product is very high and can reach 99.5% or above, and the content of the impurity amide is less than 0.1%. In addition, the catalyst used by the method can effectively accelerate the reaction, shorten the reaction time and lower the reaction temperature, thereby enhancing the energy utilization ratio and further lowering the cost of the whole preparation process.
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Reference£º
Thiazine – an overview | ScienceDirect Topics,
Thiazine | C4H5NS – PubChem