Rapid Photoassisted Access to N,O,S-Polyheterocycles with Benzoazocine and Hydroquinoline Cores: Intramolecular Cycloadditions of Photogenerated Azaxylylenes
作者:Olga A. Mukhina、N. N. Bhuvan Kumar、Teresa M. Arisco、Roman A. Valiulin、Greg A. Metzel、Andrei G. Kutateladze
DOI:10.1002/anie.201103597
日期:2011.9.26
Ring the changes: A new photoassisted approach to give conformationally constrained N,O,S‐polyheterocyclic scaffolds of unprecedented topologies was achieved by intramolecular [4+4] and [4+2] cycloadditions of photogenerated o‐azaxylylenes (23 examples; see scheme). The precursors can be readily assembled by simple and high‐yielding reactions, thus making this a powerful synthetic method amenable to