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Radical cyclization cascade involving ynamides: an original access to nitrogen-containing heterocycles
Frédéric Marion1, Christine Courillon, Max Malacria
1Laboratoire de chimie organique, associé au CNRS, Université Pierre et Marie Curie, Tour 44-54, B.229, 4 Place Jussieu, 75252 Paris Cedex 05, France.
Organic Letters
|December 20, 2003
Abstract:
A radical cascade involving a 5-exo-dig cyclization followed by a 6-endo-trig radical trapping transforms ynamides into heterogeneous polycyclic compounds in good yields. This leads interestingly to the formation of isoindols, isoindolinones, and pyridoisoindolones. [reaction: see text]