@article {2480, title = {Enamides and Enesulfonamides as Nucleophiles: Formation of Complex Ring Systems through a Platinum(II)-Catalyzed Addition/Friedel-Crafts Pathway}, journal = {Journal of Organic Chemistry}, volume = {74}, number = {18}, year = {2009}, note = {ISI Document Delivery No.: 492LATimes Cited: 5Cited Reference Count: 90Kozak, Jennifer A. Dodd, Jennifer M. Harrison, Tyler J. Jardine, Katherine J. Patrick, Brian O. Dake, Gregory R.}, month = {Sep}, pages = {6929-6935}, type = {Article}, abstract = {Cyclic enamine derivatives (enesulfonamides and enamides) tethered to an 1-arylalkynyl fragment undergo a platinum(II)-catalyzed tandem alkyne addition/Friedel-Crafts ring closure to form nitrogen-containing polycyclic structures. Regioselectivity in the initial addition of the enesulfonamide or enamide nucleophile to the platinum(II)-alkyne complex is important. Electron-rich arenes and heterocycles led to the formation of products resulting from an Initial 6-endo cyclization. Twenty-three examples of this process are presented.}, keywords = {CATALYZED CYCLOISOMERIZATIONS, CLOSING, CYCLIZATION ROUTE, DIASTEREOSELECTIVE SYNTHESIS, ELECTRON-RICH OLEFINS, ENANTIOSELECTIVE REACTIONS, LYCOPODIUM ALKALOIDS, METATHESIS, N-ACYL-ENAMINES, NITROGEN-HETEROCYCLES, REARRANGEMENTS, SKELETAL}, isbn = {0022-3263}, url = {://000269656400004}, author = {Kozak, J. A. and Dodd, J. M. and Harrison, T. J. and Jardine, K. J. and Patrick, B. O. and Dake, G. R.} }