Oxidation Of Alcohols By Composite Sylvite

The thesis consists of four chapters as followings:Chapter I: ReviewsThe paper reviewed the research progress of Oxone^? in recent years from four sections. These include the introduction, the applying of Oxone^? in organic synthesis, the applying of Oxone^? in chemical industry and the conclusions, In the second section, the author reviewed the asymmetric/symmetric epoxidation of alkene, the oxidation of alcohols, the oxidation of episulfones as well as episufides, oxidation of amine and organophosphorus, halogenation of flavanone, azidoiodination of alkene and oxyiodination of aromatic compounds, the thiocyanation of aromatic and heteroaromatic compoundes and the conversion of oxime.Chapter II: The oxidation of alcohols by n-Bu₄NHSO₅n-Bu₄NHSO₅ was prepared by a simple procedure and used as an oxidant for the oxidation of alcohols. Benzyl alcohol was chosen as a substrate to investigate the optimum reaction conditions for the oxidation of alcohols. The oxidation of other alcohols with n-Bu₄NHSO₅ was carried out according to the reaction conditions which were used for the oxidation of benzyl alcohol. The results showed that n-Bu₄NHSO₅ is a promising oxidant for the oxidation of alcohols. Most of the benzyl alcohol derivatives can be oxidized to the corresponding carbonyl compounds with high conversion and selectivity at room temperature. The results also revealed that the oxidant shows better oxidation activity for the oxidation of aromatic alcohols which contain smaller and electron-attracting groups in the benzene rings. But the oxidation activity decreases with the increasing of the chain length for the long-chained aliphatic alcohols, In appropriate condition, a series of alcohols can be oxidized to the corresponding carbonyl compounds with high conversion and selectivity by n-Bu₄NHSO₅ in water. Chapter III: The oxidation of alcohols with PTC assisted composite sylviteThe chapter consists of two sections. First, composite sylvite was used as an oxidant assisted by chemical equivalent of n-Bu₄NHSO₄, The optimum conditions for the oxidations were proposed for the oxidation of benzyl alcohol. Then the oxidation of other alcohols with composite sylvite was carried out according to the former reaction conditions. The results showed that composite sylvite is a promising oxidant for the oxidation of alcohols. Second, the oxidations of benzyl alcohol were carried out with composite sylvite catalyzed by catalytic amount of PTC in organic solvent and water respectively. The optimum conditions for the catalytic oxidations were proposed. Then the catalytic oxidation of other alcohols with composite sylvite under the optimum conditions was carried out. The results showed that benzyl alcohol and its derivatives and benzhydrol can be oxidized with high conversion. Primary alcohols can be oxidized to the corresponding aldehydes or acids and secondary alcohols to the corresponding ketones respectively. The aliphatic alcohols can be oxidized in organic solvent but can not be oxidized in water.Chapter IV: The oxidation of alcohols by composite sylvite in waterThe oxidation of benzyl alcohol was carried out by the utilization of composite sylvite to investigate the optimum reaction conditions in water. Then other alcohols were oxidized with composite sylvite under the optimum conditions. A series of alcohols can be oxidized with high conversion and selectivity with composite sylvite in water. Primary alcohols can be oxidized to the corresponding aldehydes or acids, while secondary alcohols to the corresponding ketones respectively. The aliphatic alcohols can not be oxidized in this oxidation system.