A Neutral, Chiral, Bis(imidazolidine)-Derived NCN-Type Palladium Pincer Complex with Catalytic Activity



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Caught in a pincer: A chiral, imidazolidine-derived NCN-type palladium pincer complex has been prepared using a ligand introduction technique. Single-crystal X-ray diffraction analysis of this complex showed a well-organized asymmetric sphere. The neutral palladium/chloride version exhibited significant catalytic activity for the reaction of nitroalkenes with malononitrile to give products in a highly enantioselective manner (see scheme).