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Drug intermediates p-benzoylbenzoic acid synthesis method
Drug intermediates p-benzoylbenzoic acid synthesis method
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机译:药物中间体对苯甲酰苯甲酸的合成方法
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#$%^&*AU2018100526A420180524.pdf#####7 Abstract The present invention discloses p-benzoylbenzoic acid synthesis method, comprises the following steps: 3 -amino-4-hydroxymethylbenzophenone and 5 potassium nitrate solution were added to the reaction vessel, controlled the stirring speed, raised the temperature of the solution, added 2-methyl-1-butanol solution, added terbium oxide powder in batches; maintain reflux, added potassium bromide solution, precipitateed the crystals, filter, washed with o-xylene solution for several times, washed with hexachloroethane solution for several times, recrystallized in 10 thionyl chloro solution, dehydrated with dehydration, got the finished product of p-benzoylbenzoic acid.
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