Methyldiethoxysilane → N-t-butyldimethylsilyl-N-benzyl-3-aminopropylmethyldiethoxysilane

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A flask equipped with a stirrer, reflux condenser, dropping funnel and thermometer was charged with 26.2 g (0.1 mol) of N-t-butyldimethylsilyl-N-benzyl-N-allylamine and 0.07 g of a toluene solution of platinum/1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (Pt concentration 3 wt %) and heated at 50° C. Once the internal temperature became steady, 13.4 g (0.1 mol) of methyldiethoxysilane was added dropwise over 1 hour. Stirring was continued at the temperature for a further 1 hour. The reaction solution was distilled, collecting 31.0 g of a fraction having a boiling point of 169-170° C./0.4 kPa.

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