摘要:
Ligand effects for intramolecular Pd-catalysed aryl amidation reaction were examined for the synthesis of seven-membered benzolactam rings. In an attempt to produce an eight-membered ring, tandem C-N/C-O bond forming reactions occurred to give a novel spiro-benzofuran-lactam structure. (C) 2008 Elsevier Ltd. All rights reserved.