A consecutive three-component coupling reaction involving a lithium di[3-(prop-1-enyltrimethylsilyl)]cuprate, variably substituted ortho-arynes, and a selection of common electrophiles is described. The method affords readily functionalized homobenzylic vinylsilanes with exceptional E-diastereoselectivity and allows for in situ incorporation of carbon- or heteroatom-based electrophiles into the arene.
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Ganta et al. (2008) studied this question.
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