Rhone-Poulenc, Inc.

Kenan Yunlu

Peter S Gradeff

Heiko Mauermann

Carlos M Ramirez

Ceric hydrocarbyl silyloxides are provided, as well as a process for preparing them, which comprises reacting ceric ammonium nitrate with a hydrocarbyl silanol, including a lower aliphatic silanol, under anhydrous conditions in the presence of an anhydrous base at a temperature within the range from about -30.degree. C. to about 200.degree. C. but preferably from 0.degree. to about 150.degree. C. until ceric hydrocarbyl silyloxide and the nitrate salt of the base are formed; the nitrates formed during the reaction can be separated from the reaction mixture and the ceric hydrocarbyl silyloxides isolated pure or as complexes with the solvent, or in some cases the ceric hydrocarbyl silyloxides can be used without separation from the reaction mixture in the presence of the nitrates.

Ceric hydrocarbyl silyloxides and process for their preparation

Alkoxy-type derivative compounds are a process for preparing alkoxy-type derivatives of trivalent Group 3b metals, e.g., cerium (III), such as alkoxides, siloxides or alkanolatoamines from an anhydrous complex of trivalent Group 3b metals, e.g. cerium ammonium nitrate complex, in the presence of an alcohol, silanol or alkanolamine and a base or by employing the complex and alkali salts of the alcohol, silanol, or alkanolamine.

Alkoxy-type derivative compounds and process for preparing alkoxy-type

A process is provided for preparing ceric hydrocarbyl silyloxides, which comprises transetherifying a ceric alkoxide with the silanol having the desired hydrocarbyl group and the desired number of hydroxyl groups under anhydrous conditions at a temperature within the range from about -30.degree. C. to about 200.degree. C., thereby displacing the aliphatic alcohol of the alkoxide and forming the ceric hydrocarbyl silyloxide of the silanol.

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Highland Park, NJ, United States of America

Kenan Yunlu