Ammonia → N-{[Dimethoxy(methyl)silyl]methyl}aniline

Temperature

30 °C

In a 500 ml four-neck flask with reflux condenser, precision glass stirrer, thermometer and gas inlet tube, 298 g of dry aniline were heated to 130° C. and admixed with 124 g of (chloromethyl)methyl-dimethoxysilane with stirring within 60 min. When the addition had ended, ammonia was passed through the mixture with uniform temperature with stirring until no further reaction was observed (approx. 60 min). Thereafter, excess aniline was removed under reduced pressure, and the suspension was cooled to 30° C. and then admixed with 150 ml of isohexane. Subsequently, the white precipitate formed was filtered through a suction filter and washed with 2×80 ml of isohexane. Filtrate and wash solutions were combined and freed from the solvent under reduced pressure. The subsequent fractional distillation gave 160 g (95% yield) of (N-phenylaminomethyl)dimethoxy(methyl)silane with a chloride content of <20 ppm.

1. temperatureIn a 500 ml four-neck flask with reflux condenser, precision glass stirrer
2. additionWhen the addition
3. stirringwith stirring until no further reaction
4. custom(approx. 60 min)
5. customThereafter, excess aniline was removed under reduced pressure
6. customSubsequently, the white precipitate formed
7. filtrationwas filtered through a suction
8. filtrationfilter
9. washwashed with 2×80 ml of isohexane
10. washFiltrate and wash solutions
11. distillationThe subsequent fractional distillation

ORD record

ord-2c7c60276a9f499383f2fc81e2867b8c

Source dataset

uspto-grants-2010_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07842831B2