Solid-phase synthesis of skeletally diverse benzofused sultams via palladium-catalyzed cyclization
摘要:
The solid-phase synthesis of sultams from resin-bound amino acids is described. The sulfonylation of the resin-bound primary amines afforded the requisite secondary amines, after which the intramolecular Buchwald-Hartwig-type coupling forms the C-S bond. A final alkylation on the sulfonamides followed by cleavage provided the corresponding seven-membered sultams. (c) 2011 Elsevier Ltd. All rights reserved.