ChemicalBook CAS DataBase List 1,3-Diphenyl-1,1,3,3-tetramethyldisiloxane

1,3-Diphenyl-1,1,3,3-tetramethyldisiloxane synthesis

13synthesis methods

Product Name:1,3-Diphenyl-1,1,3,3-tetramethyldisiloxane
CAS Number:56-33-7
Molecular formula:C16H22OSi2
Molecular Weight:286.52

1825-58-7
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$136.00/5ml

1,3-Diphenyl-1,1,3,3-tetramethyldisiloxane

56-33-7
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$40.00/2 g

768-33-2
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$21.00/5mL

Yield: 81% ， 24%

Reaction Conditions:

with iron(III) oxide;ethyl chloromethyl ether in chloroform at 20; for 4 h;Schlenk technique;Inert atmosphere;Reagent/catalyst;

Steps:

21; 24; 25; 26 Example 1
General procedure: Cobalt chloride · THF 1.5 (2.4 mg, 5 mol%) was placed in a Schlenk tube in an argon atmosphere glove box. Then dichloromethane (2 mL),Ethoxydimethylphenylsilane (40 μL, 0.2 mmol) and chloromethyl methyl ether (46 μL, 0.6 mmol) were added and stirred at room temperature (20 ° C.) for 1 hour.Thereafter, it was filtered through a glass fiber filter (ADVANTEC, GA-100) and washed with dichloromethane. The filtrate was taken out of the glove box and concentrated under high vacuum. After mesitylene (internal standard, 8 μL, 0.0575 mmol) was added, 1 H NMR (CDCl 3) was measured to show that chlorodimethylphenylsilane was produced in a 70% yield.confirmed.

References:

National Inatitute of Advance Industrial;Mashima, Kazushi;Tsurugi, Hayato;Pramanik, Suman;Matsumoto, Kazuhiro JP2019/85367, 2019, A Location in patent:Paragraph 0028; 0031; 0032