Abstract

The formal synthesis of kainic acid was carried out in eleven steps. The key cyclization step was accomplished through an intramolecular palladium-catalyzed allylic alkylation of an allylic sulfone. Further functionalization of the resulting pyrrolidone -featured, inter alia, a N-heterocyclic carbene-copper hydride (NHC-CuH)-mediated stereoconvergent conjugate reduction.

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