845-96-5Relevant academic research and scientific papers
Zur Synthese von Siloxanen XIV. Die Umsetzung von Chlorsilanen mit Silanolen im sauren Medium
Ruehlmann, K.,Grosse-Ruyken, H.,Scheller, D.,Scheim, U.
, p. 39 - 48 (1988)
The reactions of aryldimethylchlorosilanes with benzyldimethylsilanol in C6D6/dioxane (2.8/1) have been investigated by 1H NMR spectroscopy.Fast substituent exchange reactions were observed in the presence of H2O or HCl.In this process both substances establish chlorosilane/silanol equilibria which are related to the concetration of H2O and HCl formed.A ρ-value of 1.3 was found for the reaction of substituted aryldimethylchlorosilanes with benzyldimethylsilanol in the presence of H2O.In time the equilibria are disturbed by condensation processes.
SILOXANE COMPOUND PRODUCTION METHOD AND GOLD CATALYST USED THEREIN
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Paragraph 0054-0060; 0061; 0062, (2017/06/19)
PROBLEM TO BE SOLVED: To provide a technique for synthesizing a siloxane compound from a silane compound with high efficiency using a catalytic reaction under a safe and low environmental load condition. SOLUTION: In a siloxane compound production method, a silane compound is brought into contact with a gold catalyst carrying nano-sized gold particles on a carbon carrier, using water as a solvent in an inert gas atmosphere. A gold catalyst carrying nano-sized gold particles on a carbon carrier can be used in the method, and the gold particles have a crystallite size of 10-100 nm. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT
Aryl-aryl bond formation by the fluoride-free cross-coupling of aryldisiloxanes with aryl bromides
Boehner, Christine M.,Frye, Elizabeth C.,O'Connell, Kieron M. G.,Galloway, Warren R. J. D.,Sore, Hannah F.,Dominguez, Patricia Garcia,Norton, David,Hulcoop, David G.,Owen, Martin,Turner, Gillian,Crawford, Claire,Horsley, Helen,Spring, David R.
supporting information; experimental part, p. 13230 - 13239 (2012/02/06)
The prevalence of the biaryl structural motif in biologically interesting and synthetically important molecules has inspired considerable interest in the development of methods for aryl-aryl bond formation. Herein we describe a novel strategy for this process involving the fluoride-free, palladium-catalysed cross-coupling of readily accessible aryldisiloxanes and aryl bromides. Using a statistical-based optimisation process, preparatively useful reaction conditions were formulated to allow the cross-coupling of a wide range of different substrates. This methodology represents an attractive, cost-efficient, flexible and robust alternative to the traditional transition-metal-catalysed routes typically used to generate molecules containing the privileged biaryl scaffold.
