Radical cascade cyclizations and platinum(II)-catalyzed cycloisomerizations of ynamides
作者:Frédéric Marion、Julien Coulomb、Aurore Servais、Christine Courillon、Louis Fensterbank、Max Malacria
DOI:10.1016/j.tet.2005.11.092
日期:2006.4
Ynamides are tested as new partners in radical and organometallic transformations. A radical cascade involving a 5-exo-dig cyclization followed by a 6-endo-trig radical trapping transforms ynamides into hetero-polycyclic compounds such as isoindoles, isoindolinones and pyrido-isoindolones. Various ene–tosylynamides react with platinum(II) chloride and lead to bicyclic nitrogenated heterocycles. This
氰化物作为自由基和有机金属转变的新伙伴进行了测试。涉及5- exo - dig环化和6- endo - trig自由基捕获的自由基级联反应将酰胺转化为异多环化合物,例如异吲哚,异吲哚满酮和吡啶基-异吲哚满酮。各种烯基-甲苯磺酰基酰胺与氯化铂(II)反应并生成双环含氮杂环。这种空前的,易于操作的过程可以与一环转化中的中间体环状甲苯磺酰胺的水解反应结合在一起,从而提供环丁酮。