Liu Yu-long
2006
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Journal
Fine Chemical Intermediates
Abstract
2-[(1-Hydroxy-2-naphthyl)carbonyl] carbonyl] benzoic acid was prepared from phthalic anhydride and α-naphthol using boric oxide as a catalyst.The optimal reaction conditions were as follows:the molar ratio of boric oxide,anhydride and α-naphthol =1.5 ∶ 1.5 ∶ 1,reaction temperature 180~190℃ and reaction time 2.0 h,the yield reached 97.8%.The obtained product was characterized by element analysis,1H NMR,IR and EIMS.