Stereoselective Synthesis of (−)-α-Kainic Acid and (+)-α-Allokainic Acid via Trimethylstannyl-Mediated Radical Carbocyclization and Oxidative Destannylation
Stereoselective Synthesis of (−)-α-Kainic Acid and (+)-α-Allokainic Acid via Trimethylstannyl-Mediated Radical Carbocyclization and Oxidative Destannylation
Abstract Highlydiastereoselective synthesis of (6-methylenepyrrolo[1,2-c]-oxazol-7-y1)methylphosphonate 5 was achieved by an application of intramolecular radical cyclization of vinyl radical to β-carbon of unsaturated phosphonate.