395683-14-4Relevant articles and documents
Pyrrole compound, a preparation method and uses thereof
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Paragraph 0052; 0053; 0054; 0055, (2019/04/26)
The invention relates to a pyrrole compound, a preparation method and uses thereof, particularly to 4-(4-(methylsulfonyl)phenyl-1-propyl-3-(p-tolyl)-1H-pyrrole-2-ol (represented by a formula C) or a pharmaceutically acceptable salt thereof, a preparation
Preparation method of imrecoxib
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, (2019/11/13)
The invention provides a preparation method of imrecoxib. The preparation method of the imrecoxib comprises the steps that alpha-n-propylamino-4-methyl sulfonate acetophenone (II) and 4-methyl phenylacetate (III) are used as main raw materials, amidation
Synthetic method of imrecoxib
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, (2019/01/07)
The invention discloses a synthetic method of imrecoxib. The synthetic method comprises the following steps: allowing (E)-1-p-methanesulfonylphenyl-1-nitro-2-p-tolylethylene and ethyl isocyanoacetateto undergo a condensation and cyclization reaction in a system containing an alkali reagent and a solvent; allowing the obtained 3-p-methylphenyl-4-p-methylsulfonylphenylpyrrole-2-carboxylate to undergo a reducing reaction at -78 DEG C in a system containing a reducing reagent and a solvent; allowing the obtained 3-p-methylphenyl-4-p-methylsulfonylphenylpyrrole-2-carbaldehyde to undergo an oxidation reaction in a system containing a hydrogen peroxide solution and a solvent; and allowing the obtained 3-p-methylphenyl-4-p-methylsulfonylphenyl-3-pyrrolidin-2-one and 1-halopropane or a hydrocarbonpropyl sulfonate derivative to undergo a substitution reaction in a system containing an alkali reagent and a solvent to obtain the imrecoxib. The synthetic method of the imrecoxib has the beneficialeffects that the reaction steps are simplified and optimized and the process is simple in operation, thereby being helpful to reduce cost; reaction impurities are less and controllable, so greennessand environment-friendliness are embodied; and initial raw materials and the used reagents are easily available.