VINYLPHENYLDIETHOXYSILANE synthesis
- Product Name:VINYLPHENYLDIETHOXYSILANE
- CAS Number:40195-27-5
- Molecular formula:C12H18O2Si
- Molecular Weight:222.36
Yield:40195-27-5 100%
Reaction Conditions:
with n-butyllithium;N-ethyl-N,N-diisopropylamine in tetrahydrofuran at -78 - 20;Inert atmosphere;
Steps:
2 Example 2 Synthesis of Silicone Ether
Dry THF (50 mL) was added to a dry 100 mL 3-neck flask.Diisopropylamine (7.0 mL, 48 mmol) was added to two constant pressure dropping funnels, respectively, ethyl benzoate (6.0 g, 40 mmol), trimethylchlorosilane (6.66 mL. 50 mmol), N2, The system was cooled to 0 ° C, and n-butyl lithium (18.4 mL, 22 mmol) was slowly injected with a syringe. After the completion of the injection, the reaction was kept at 0 ° C for 10 minutes, the system was cooled to -78 ° C, and ethyl benzoate was added dropwise to maintain the temperature. After the completion of the dropwise addition, the mixture was stirred at -78 ° C for 1 h, and trimethylchlorosilane was slowly added dropwise. After the completion of the dropwise addition, the temperature of the reaction solution was naturally raised to room temperature for 15 hours; after the reaction was completed, 300 mL of n-hexane was added. The solution was dissolved in celite, and the solvent was evaporated. The solvent was evaporated under reduced pressure to give a pale yellow liquid (8.9 g, yield: 100%).
References:
CN104418797,2019,B Location in patent:Paragraph 0313-0318
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