Catalytic Enantioselective Reissert-Type Reaction: Development and Application to the Synthesis of a Potent NMDA Receptor Antagonist (−)-L-689,560 Using a Solid-Supported Catalyst
indicated that the reaction should proceed via the rate-determining acyl quinolinium formation, followed by the attack of a cyanide. The catalyst does not facilitate the first rate-determining step; however, it strongly facilitates the second cyanation step. The reaction was successfully applied to an efficient catalytic asymmetric synthesis of a potent NMDA receptor antagonist (-)-L-689,560. A key