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A novel palladium-catalyzed aryl-furanylation of alkenes is described. This protocol provided a straightforward route to the synthesis of various benzofuran-containing 3,3-disubstitutedoxindole derivatives bearing a quarternary carbon center. In the cascade process, one C(sp 2 )–O bond, two C(sp 2 )–C(sp 3 ) bonds, an oxindole, and a furan ring are formed in a single chemical operation.
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Qi et al. (2021) studied this question.
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