Rhodium nanoflowers stabilized by a nitrogen-rich PEG-tagged substrate as recyclable catalyst for the stereoselective hydrosilylation of internal alkynes

Morphology and size controllable rhodium nanoparticles stabilized by a nitrogen-rich polyoxyethylenated derivative have been prepared by reduction of RhCl3 with NaBH4 in water at room temperature and fully characterized. The flower-like Rh NPs are effective and recyclable catalysts for the stereosel...

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Bibliographic Details
Authors: Guo, Wusheng|||0000-0002-9988-8497, Pleixats, Roser|||0000-0003-2544-732X, Shafir, Alexandr|||0000-0002-8127-2299, Parella Coll, Teodor|||0000-0002-1914-2709
Format: article
Publication Date:2015
Country:España
Institution:Universitat Autònoma de Barcelona
Repository:Dipòsit Digital de Documents de la UAB
Language:English
OAI Identifier:oai:ddd.uab.cat:157783
Online Access:https://ddd.uab.cat/record/157783
https://dx.doi.org/urn:doi:10.1002/adsc.201400740
Access Level:Open access
Keyword:Alkynes
Hydrosilylation
Polyoxyethylenated compound
Recyclable catalyst
Rhodium nanoparticles
Description
Summary:Morphology and size controllable rhodium nanoparticles stabilized by a nitrogen-rich polyoxyethylenated derivative have been prepared by reduction of RhCl3 with NaBH4 in water at room temperature and fully characterized. The flower-like Rh NPs are effective and recyclable catalysts for the stereoselective hydrosilylation of challenging internal alkynes and diynes, affording the (E)-vinylsilanes in quantitative yields for a wide range of substrates. The insolubility of the nanocatalyst in diethyl ether allows its easy separation and recycling.

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