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2004
Reduction
O 0220
44- 056
"Polysiloxane-Pd" Nanocomposites as Recyclable Chemoselective Hydrogenation
Catalysts. — Polysiloxane-encapsulated "Pd"-nanoclusters are generated by reduction
of Pd(OAc)2 with polymethylhydrosiloxane as the reducing agent and as a stabilizing
agent for the catalytically active "Pd"-nanoparticles. The latter are used for the chemoselective hydrogenation of functional conjugated alkenes under mild conditions. The
new method can also be applied to the reduction of conjugated enones to provide the
corresponding ketones. Reduction of vinyl ferrocene also proceeds at room temperature. — (CHAUHAN*, B. P. S.; RATHORE, J. S.; BANDOO, T.; J. Am. Chem. Soc.
126 (2004) 27, 8493-8500; Dep. Chem., Coll. Staten Island, City Univ. New York,
Staten Island, NY 10301, USA; Eng.) — S. Adam
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