Chemistry is traditionally divided into organic and inorganic chemistry. SDS of cas: 181696-35-5, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 181696-35-5
A preparation of cyclooxygenase -2 inhibitor handkerchief auspicious past cloth method (by machine translation)
The invention relates to a kind of preparation of cyclooxygenase -2 inhibitor handkerchief auspicious past cloth method, the method comprises the following steps: 1) the benzoic aidoxime and the 1 […] (4 the phenyl sulfonate […] ) methylacetylene in three (the 2 […] phenylpyridin) gathers the iridium (III), the magnesium oxide and the presence of triethylamine, the reaction is conducted under conditions of illumination to the 5 […] methyl -3 the […] phenyl -4 the […] (4 the phenyl sulfonate […] ) heteroploid oxazole; 2) the step 1) of the 5 […] methyl -3 the […] phenyl -4 the […] (4 the phenyl sulfonate […] ) isoxazole with thionyl chloride contact reaction, after the reaction, methylene chloride extraction, dichloromethane is in directly adding ammonia water, separating the organic phase, washed, concentrated, recrystallized with ethanol to obtain cutting past cloth ; 3) steps 2) logging in of the presence of triethylamine in past cloth with propionic anhydride reaction to obtain handkerchief auspicious past cloth. Preparation of the present invention has the advantages of simple method steps handkerchief auspicious past cloth, high yield and after treatment is simple. (by machine translation)
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Reference£º
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem