K. Chattopadhyay et al. / Tetrahedron Letters 50 (2009) 3164–3167
3167
Figure 4. (a) HRTEM of CuO/Pd-1; (b) HRTEM of CuO/Pd-3.
plementary data associated with this article can be found, in the
Table 5
Physical data of CuO supported palladium
Sample
Shapea
% of Pd (wt/wt)b
References and notes
CuO/Pd-1
CuO/Pd-2
CuO/Pd-3
Rod
7.1
7.4
7.0
Mixture of rod and oval
Oval
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In conclusion, we report for the first time the preparation of
rod- and oval-shaped copper oxide-supported palladium(0) nano-
particles (CuO/Pd) by the reaction of copper nitrate and palladium
acetate controlled by the amount of polyethylene glycol (PEG-
6000) used, and their application for selective organic transforma-
tion. Very significantly, oval CuO/Pd catalyzes Suzuki coupling
better, and rod shapes catalyze the cyanation of aryl halides effi-
ciently. The compartmental accomplishment of Suzuki coupling
and the cyanation reaction by the shape of the catalyst is novel,
and is of much potential for further applications. The other signif-
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the catalyst, high yields of products, and reusability of the catalyst
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Acknowledgments
This investigation has enjoyed financial support from DST
(Grant No. SR/S5/GC-02/2006). K.C. and R.D. are thankful to CSIR
for their fellowships.
Supplementary data
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Experimental procedures for the preparation of the catalyst,
CuO/Pd, Suzuki coupling and cyanation reactions and the recycla-
bility chart of the catalyst in the Suzuki reaction are available. Sup-
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