Application of 37928-17-9, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.37928-17-9, Name is 5-Methyl-3,4-diphenylisoxazole, molecular formula is C16H13NO. In a Patent，once mentioned of 37928-17-9
The invention discloses a handkerchief auspicious past cloth sodium impurities S, namely N – {3 – [(5 – methyl – 4 – phenyl isoxazole – 3 – yl) phenyl] sulfonyl} propionamide, and its preparation method, which belongs to the technical field of chemical pharmacy. The method of the invention to 5 – methyl – 3, 4 – diphenyl isoxazole as the starting material, by controlling the reaction conditions and the auxiliary agent, so that the isoxazolo of 3 bit benzene ring has increased on the position connected therebetween on the proportion of the sulfonic acid chloride group; then amination reaction, the crystallization mother liquor concentrated to dry the resulting product propionylate, finally through the preparation of a liquid phase separation to obtain the handkerchief auspicious past cloth sodium impurities S. The invention said high purity of the sodium impurity S handkerchief auspicious past cloth, can be used as finished product handkerchief auspicious past cloth sodium detection and analysis of the impurities in the standard, thereby improving the handkerchief auspicious past cloth sodium finished product detection analysis of the accurate positioning of the impurity and qualitative, conducive to strengthening the impurity control, thereby improving the quality of the finished product handkerchief auspicious past cloth sodium. The method of the invention cheap raw material, simple operation, good reproducibility, HPLC purity ? 99.5%. (by machine translation)
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Reference：
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem