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

1,1,3,3-tetramethyldisiloxane-1,3-diol synthesis

12synthesis methods

Product Name:1,1,3,3-tetramethyldisiloxane-1,3-diol
CAS Number:1118-15-6
Molecular formula:C4H14O3Si2
Molecular Weight:166.32

Benzene, 1,1'-[dimethylsilylenebis(oxymethylene)]bis-

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Yield: 88% ， 6%

Reaction Conditions:

with palladium-platinum;hydrogen;aniline in N,N-dimethyl acetamide at 20; for 2 h;Concentration;

Steps:

46 Example 42
General procedure: A total of 17.9 mg of ASCA-2 (Pd 4.5 mass %, Pt 0.5 mass %) produced by N.E. Chemcat Corporation (2.5 mol % when calculated based on benzyloxy groups) and dimethyldibenzyloxysilane (40.8 mg, 0.150 mmol) obtained in Synthesis Example 3 were placed into a two-neck flask equipped with a magnetic stirrer, and 1.6 ml of N,N-dimethylacetamide (DMAc) and aniline (NH₂Ph, 1.8 mg) in a 0.063-fold substance amount, when calculated based on benzyloxy groups, were added thereto. After replacing with hydrogen gas, a reaction was conducted for 2.0 h at room temperature. The catalyst was then filtered out with a filter.

References:

NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY;Igarashi, Masayasu;Shimada, Shigeru;Sato, Kazuhiko;Matsumoto, Tomohiro US2017/183363, 2017, A1 Location in patent:Paragraph 0224-0230