Preparation And Catalytic Performance Of Sulfonated Solid Acid In Baeyer-Villiger Oxidation Of Cyclic Ketones

The thesis consists of three chapters as follows:Chapter one: ReviewsThe chapter reviewed the recent progress of Baeyer-Villiger oxidation fromthe four subsections including:（1） The history of the Baeyer-Villiger oxidation;（2）The mechanism of the oxidation;（3） The characteristics of the reaction and （4）The progress of Baeyer-Villiger oxidation. Meanwhile the progress of bothoxidants and catalysts were introduced separately. As far as catalysts concerned,the thesis mainly introduced the applications of homogeneous catalyst,heterogeneous catalyst as well as enzyme catalyst in Baeyer-villiger oxidationreactions. The progress of catalytic heterogeneous Baeyer-Villiger oxidation ofketones was well reviewed through the point of view of the polymer supporters,the inorganic supporters （such as zeolite, silica, clays, etc.） and otherheterogeneous systems （such as metal oxide, solid acid, etc.）.Chapter two: Preparation and catalytic application of sulfonated amorphouscarbon materials as highly active solid acid catalystSulfonic acid group-functionalized amorphous carbon solid acid catalyst（AC-SO₃H） was prepared through heating and refluxing method. The AC-SO3Hcatalyzed Baeyer-Villiger oxidation of cyclic ketones with30%H₂O₂as oxidantas well as Friedel-Crafts alkylation of anisole and benzyl alcohol was also wellinvesigated. The results show that many of the cyclic ketones of, except for4-methyl cyclohexanone, more than80%of the substrate conversion as well ashigh lactones selectivity in the Baeyer-Villiger oxidation can be easily obtained.The catalyst also shows good catalytic performance in the Friedel-Craftsalkylation of anisole and benzyl alcohol. The catalyst bears the advantage ofsimple synthesis procedures and can be potantially used in somes acid-promotedorganic reactions. Chapter three: Baeyer-Villiger oxidation of cyclic ketones catalyzed by1%Al₂O₃-doped sulfated tin oxide solid acid catalystsThe solid acid of1wt%Al₂O₃doped SO₄^2-/SnO₂were prepared throughcoprecipitation method. Its catalytic performance in the Baeyer-Villiger oxidationwith30%H₂O₂as oxidant was investigated. The results show that the catalystshows high catalytic activity in the oxidation of2-adamantanone andcyclopentanone, and the oxidation reaction can win more than95%of thesubstrate conversion and lactone selectivity. The catalyst bears the advantages ofsimple prepare procedures as well as good reusability, and can be potantially usedin somes acid-promoted organic reactions.