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- W2355210003 abstract "Polyamidoamine dendrimers were grafted onto macro-porous silica gel through solid phase synthesis methodology,and the peripheral amino groups on these dendrimers were modified by 4-hydroxybenzaldehyde,2,4-dihydroxybenzaldehyde and salicylaldehyde to obtain ligands,and then the product reacted with SnCl2·2H2O to obtain silica supported dendritic Sn complexes.The catalytic performance of the silica supported dendritic Sn complexes was investigated by Baeyer-Villiger oxidation of cyclic and acyclic ketones to obtain their corresponding lactones or esters with 30% hydrogen peroxide.It was shown that all the complexes exhibit promising catalytic activity for the oxidation of ketones(2-andamantanone,cyclohexanone,cyclopentanone,4-methylcyclohexanone,4-tertbutylcyclohexanone,3-methyl-2-pentanone and 4-methyl-2-pentanone).Under the mild condition,all the oxidations gave high conversion(75%-99%) and selectivity(95%-100%) of lactones or esters.The effects of the supporter(chloromethyl polystyrene,cellulose,chitosan,silica) and ligand on the catalytic activity were also studied;it was discovered that both the supporter and the ligand played a vital role in metal loadings and the catalytic activity of the complexes.Silica was the best supporter and salicylaldehyde was the best ligand." @default.
- W2355210003 created "2016-06-24" @default.
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- W2355210003 date "2013-01-01" @default.
- W2355210003 modified "2023-09-22" @default.
- W2355210003 title "Catalytic Properties of Polyamidoamine Dendritic Tin Complexes" @default.
- W2355210003 hasPublicationYear "2013" @default.
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