Fig. 1. 1H NMR spectra for the reaction of Ni(0) with 1,3-butadiene and 2m in THF-d8 at 20 °C. (a) Ni(cod)2, (b) Ni(cod)2 and 5 equiv. of 1,3-butadiene, and (c) Ni(cod)2, 1,3-butadiene (5 equiv.), and 2m (2 equiv.).
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