METHOD FOR THE PREPARATION OF ALKOXYSILANE CLUSTER COMPOUNDS

METHOD FOR THE PREPARATION OF ALKOXYSILANE CLUSTER COMPOUNDS

An improved method is disclosed for preparing alkoxysilane cluster compounds having the formula: RSi¢oSi(OR')3!3 wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group and each R' is independently selected from alkyl, alkenyl, aryl and aralkyl with the proviso that at least a majo...

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Bibliographische Detailangaben
1. Verfasser: KNOLLMUELLER, KARL O
Format: Patent
Sprache:eng ; fre
Schlagworte:
ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:An improved method is disclosed for preparing alkoxysilane cluster compounds having the formula: RSi¢oSi(OR')3!3 wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group and each R' is independently selected from alkyl, alkenyl, aryl and aralkyl with the proviso that at least a majority of the R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms. The improved preparation method involves reacting a substituted trihalosilane with a trialkoxysilanol in the presence of a critical amount of an acceptor base in a solvent reaction medium while maintaining the reactor temperature within a select range.