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
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]
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