Abstract
The products of the reactions of monofunctional (3-aminopropyl)triethoxysilane and (3-aminopropyl)trimethoxysilane and bifunctional [3-N-(2-aminoethyl)aminopropyl]trimethoxysilane with acetic and maleic anhydrides in CCl4 at varied reagent molar ratios are studied by 1H and 13C NMR spectroscopy. It is shown that the reaction of [3-N-(2-aminoethyl)aminopropyl]trimethoxysilane with the above anhydrides leads to formation of diamides as mixtures of cisoid and transoid rotamers about both amide bonds. The reactions with monofunctional (aminopropyl)trialkoxysilanes give individual isomers.
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