Process the production of octaphenylcyclotetrasiloxane

Details Process the production of octaphenylcyclotetrasiloxane Process the production of octaphenylcyclotetrasiloxane

1997-04-29

1998-04-14

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C07F 708

Patent

active

057393702

ABSTRACT:
A base catalyzed hydrolysis of dialkoxydiphenylsilanes or dialkoxymethylphenylsilanes in a solvent or solvent mixture wherein dialkoxydiphenylsilanes or dialkoxymethylphenylsilanes are soluble but in which octaphenylcyclotetrasiloxane or tetramethyltetraphenyl-cyclotetrasiloxane is sparingly soluble or insoluble provides for a process to prepare octaphenylcyclotetrasiloxane or sym-tetramethyltetraphenyl-cyclotetrasiloxane in high yield.

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patent: 5302659 (1994-04-01), Bindl et al.
patent: 5399652 (1995-03-01), Bindl et al.
patent: 5545837 (1996-08-01), Kobayashi
"Product-Specific Methods of Syntheses of Hexaphenylcyclotrisiloxane and Octaphenylcyclotetrasiloxane -- Monomers of Phenyisilicons", Mei-Hui Yang, Journal of the Chinese Chemical Society, 1995, 42 923-928.

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