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Just add salt: Vinyl aziridines have been treated with methyl vinyl ketone or ethyl thioacrylate in the presence of Pd0 to give pyrrolidines with moderate to good diastereoselectivity. The presence of nBu4NCl was critical to successful annulation. The synthetic utility of the methodology has been demonstrated in a short (formal) synthesis of (−)‐α‐kainic acid.
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