A method for the organic total synthesis of a nimesulide derivative

Abstract

The application discloses a kind of organic total synthesis methods of nimesulide derivatives, it is obtained by the reaction of phenol derivative and nitration test, first intermediate;First intermediate and esterification reagent are esterified, and second intermediate is obtained;Second intermediate and nucleophilic reagent are substituted, and third intermediate is obtained;Third intermediate and phenol derivative are coupled, and fourth intermediate is obtained;Fourth intermediate and reducing agent are reduced, and fifth intermediate is obtained;Fifth intermediate and sulfonylation reagent are sulfonylated, and sixth intermediate is obtained;Sixth intermediate and nitration reagent are nitrified, and nimesulide derivative is obtained.The application selects more easily preserved, cheap and easily obtained and higher safety substrate and reagent, process is simple, reaction condition requirement is low, green environmental protection, safety performance is good, product yield is high, easy to scale production.

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