The first cyclization/decarboxylation reaction of isatins with acyl chlorides promoted by 4‐dimethylaminopyridine (DMAP) was described and a series of desired 3‐alkenyl‐oxindoles were obtained in good yields (up to 80%) and E / Z selectivities (up to 6.4/1). This protocol provided a new and feasible access to 3‐alkenyl‐oxindoles.
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Chen et al. (2014) studied this question.
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