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.