A new cinchona-modified platinum catalyst for the enantioselective hydrogenation of pyruvate: the structure of the 1:1 alkaloid–reactant complex

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Mihály Bartók, Károly Felföldi, Mihály Bartók, Béla Török and Tibor Bartók


Abstract

The hydrogenation of ethyl pyruvate to (S)-ethyl lactate (up to 70% ee) over a Pt/Al2O3 catalyst using α-isocinchonine as a modifier strongly supports the structure of the intermediate complex [cinchona alkaloid (open conformer)–pyruvate 1:1 complex] of this type of reactions.


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