Access to C(sp<sup>3</sup>)–C(sp<sup>2</sup>) and C(sp<sup>2</sup>)–C(sp<sup>2</sup>) Bond Formation via
Sequential Intermolecular Carbopalladation of Multiple Carbon–Carbon
Bonds
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Abstract
A synthetic strategy of 4-benzyl-substituted 1,3-butadiene
derivatives
through Pd-catalyzed three-component coupling reaction of benzyl chlorides,
alkynes, and monosubstituted alkenes is described. This tandem coupling
reaction forms a C(sp<sup>3</sup>)–C(sp<sup>2</sup>) bond and
a C(sp<sup>2</sup>)–C(sp<sup>2</sup>) bond sequentially in
a single-step operation