Journal of the American Chemical Society
COMMUNICATION
’ ACKNOWLEDGMENT
We thank the Natural Sciences and Engineering Research
Council of Canada (NSERC), the University of Toronto, and
Merck-Frosst Canada for an Industrial Research Chair for
financial support. S.G.N. thanks NSERC for a postgraduate
scholarship. Margot Lautens is thanked for aiding in the synthesis
of starting materials. We thank Johnson Matthey for donation of
palladium catalysts and Alan J. Lough (Chemistry Department,
University of Toronto) for obtaining the crystal structure of 4b.
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dx.doi.org/10.1021/ja110377q |J. Am. Chem. Soc. 2011, 133, 1778–1780