Water as green oxidant: a highly selective conversion of organosilanes to silanols with water

Selective hydrolytic oxidation of organohydrosilanes was achieved with water in the presence of Pt‐nanoparticle catalyst. The selectivity of the process was established by NMR analysis. In addition, various Pt‐based catalysts were screened to compare the activity and selectivity with Pt‐nanoparticle...

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Bibliographic Details
Published in:Applied organometallic chemistry 2009-09, Vol.23 (10), p.385-390
Main Authors: Chauhan, Bhanu P. S., Sarkar, Alok, Chauhan, Moni, Roka, Abhishek
Format: Article
Language:English
Subjects:
functional silanols
functionalization
green catalysis
metal nanoparticles
organosilanes
polysiloxane
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Summary:Selective hydrolytic oxidation of organohydrosilanes was achieved with water in the presence of Pt‐nanoparticle catalyst. The selectivity of the process was established by NMR analysis. In addition, various Pt‐based catalysts were screened to compare the activity and selectivity with Pt‐nanoparticles catalysis. The method was equally applicable to hydrosilanes bearing unsaturated functional groups, which led to corresponding silanols under mild reaction conditions without formation of any side products. Pt‐nanoparticle catalysis was studied in details using UV–vis, TEM and mercury poisoning experiments during the transformation. Copyright © 2009 John Wiley & Sons, Ltd. This publication describes a highly selective, mild and efficient hydrolytic oxidation of organosilanes to corresponding silanols via Pt‐nanoparticle catalysis. This catalysis is accomplished in presence of water as oxidant and also addresses the problems related with catalysts recovery and recycling. In addition, a successful application of this method to generate olefin‐functionalized silanols in excellent yield under mild reaction conditions is also reported.
ISSN:0268-2605
1099-0739
DOI:10.1002/aoc.1528