1,1,1,3,5,5,5-Heptamethyltrisiloxane synthesis
- Product Name:1,1,1,3,5,5,5-Heptamethyltrisiloxane
- CAS Number:1873-88-7
- Molecular formula:C7H22O2Si3
- Molecular Weight:222.5
75-54-7
1066-40-6
1873-88-7
A solution of dichloromethylsilane (20 g, 0.174 mol) in hexane (60 mL) was slowly added dropwise at -30 °C to a mixed solution containing trimethylsilanol (40 g, 0.45 mol) and pyridine (33.2 g, 0.42 mol). The reaction mixture was gradually warmed to room temperature and stirred continuously for 16 hours. After completion of the reaction, the precipitate was removed by filtration and the filtrate was sequentially washed with water and dried over sodium sulfate. The final product was purified by atmospheric pressure distillation in 34% yield.
Yield:1873-88-7 34%
Reaction Conditions:
with pyridine in hexane at -30 - 20; for 16 h;
Steps:
1,1,1,3,5,5,5-Heptamethyltrisiloxane (1).
A solution of dichloromethylsilane (20 g, 0.174 mol) in hexane (60 mL) was added dropwise to a solution of trimethylsilanol (40 g, 0.45 mol) in pyridine (33.2 g, 0.42 mol) at a temperature of -30 °C. The reaction mixture was heated to room temperature and stirred for 16 h. Then, the solution was filtered from the precipitate, washed with water, and dried with sodium sulfate. The product was isolated by distillation at atmospheric pressure. The yield was 34%.
References:
Khairova;Milenin;Cherkaev;Stoikov;Muzafarov [Russian Chemical Bulletin,2016,vol. 65,# 5,p. 1285 - 1288][Izv. Akad. Nauk, Ser. Khim.,2016,vol. 65,# 5,p. 1285 - 1288,4]
75-54-7
178 suppliers
$32.47/25G
107-46-0
474 suppliers
$10.00/10g
1873-88-7
298 suppliers
$5.00/5g
16066-09-4
149 suppliers
$10.00/25g
17478-13-6
0 suppliers
inquiry
17998-54-8
0 suppliers
inquiry
