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In a multicomponent coupling reaction, 1,3-butadienes underwent Ni-catalyzed dimerization and carbosilylation in the presence of a chlorosilane and a Grignard reagent at −20 °C (see scheme). The coupling product was obtained regio- and stereoselectively when unsubstituted 1,3-butadiene was used. (R=H, Me, or C9H19; R′, R′′=hydrocarbon substituent.)
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Terao et al. (2003) studied this question.
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