posted on 2009-08-20, 00:00authored byJohn B. Feltenberger, Ryuji Hayashi, Yu Tang, Eric S. C. Babiash, Richard P. Hsung
Benzyne-[2 + 2] cycloadditions with enamides are described. This effort led to the development of a highly stereoselective tandem [2 + 2] cycloaddition−pericyclic ring-opening−intramolecular-N-tethered-[4 + 2] cycloaddition for rapid assembly of nitrogen heterocycles.