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Perrhenic acid as catalyst for hydrosilylation of aldehydes and ketones and dehydrogenative silylation of alcohols

Paper ID Volume ID Publish Year Pages File Format Full-Text
52664 46880 2007 3 PDF Available
Title
Perrhenic acid as catalyst for hydrosilylation of aldehydes and ketones and dehydrogenative silylation of alcohols
Abstract

Hydrosilylation of aldehydes and ketones with dimethylphenylsilane was catalyzed by perrhenic acid, HReO4, to give silylated ethers in good yields. These hydrosilylation reactions appear to be radical processes, since they were inhibited in the presence of 5,5-dimethyl-4,5-dihydro-3H-pyrrole-N-oxide (DMPO) and Ph2NH, two well-known radical scavengers. Perrhenic acid also catalyzes the dehydrogenative silylation of alcohols in neat conditions at 25 °C. It is selective for the silylation of hydroxyl groups in the presence of alkenes and alkyl halides (RCl).

Keywords
Perrhenic acid; Hydrosilylation; Dehydrogenative silylation; Rhenium; Oxides
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Perrhenic acid as catalyst for hydrosilylation of aldehydes and ketones and dehydrogenative silylation of alcohols
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 7, July 2007, Pages 1057–1059
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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