Water → [(Methylsilanediyl)bis(methylene)]bis(dimethylsilane)

A solution of 70 g of chloromethyldimethylsilane in 400 ml of anhydrous tetrahydrofuran (THF) was added dropwise to 20 g of magnesium powder in a flask equipped with a mechanical stirrer and a condenser. The rate of addition was regulated to maintain reflux for the Grignard solution. To this Grignard reagent solution was then added dropwise 37 g of methyldichlorosilane in 300 ml THF. The resultant mixture was stirred overnight with gentle reflux. After cooled down to room temperature, the reaction was worked up by adding water. The organic phase was separated and dried over anhydrous sodium sulfate. Solvent (THF) was removed by atmospheric pressure distillation. Vacuum distillation at 85° C./20 mm yielded 56 g of 2,4,6-trimethyl-2,4,6-trisila-heptane.

1. customequipped with a mechanical stirrer and a condenser
2. additionThe rate of addition
3. temperatureto maintain
4. temperaturereflux for the Grignard solution
5. customThe organic phase was separated
6. dry with materialdried over anhydrous sodium sulfate
7. customSolvent (THF) was removed by atmospheric pressure distillation
8. distillationVacuum distillation at 85° C./20 mm

ORD record

ord-7b660452bc434d06a4d735f3b47c8906

Source dataset

uspto-grants-2004_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06730802B2