ChemicalBook CAS DataBase List 1,1,1,3,5,5,5-Heptamethyltrisiloxane

1,1,1,3,5,5,5-Heptamethyltrisiloxane synthesis

10synthesis methods

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 Synthesis

75-54-7
162 suppliers
$32.47/25G

1066-40-6 Synthesis

1066-40-6
217 suppliers
$14.00/1g

1873-88-7
286 suppliers
$5.00/5g

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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992-94-9 Synthesis