Cu(I)-catalyzed intramolecular cyclizations of substituted 2-iodobenzophenones under thermal and microwave conditions

Novel, easy-to-perform and practical intramolecular Cu(I)-catalyzed cyclizations of substituted 2-iodobenzophenones under thermal and microwave conditions are reported. The isolated cyclized products under microwave conditions are obtained with high yields and with short reaction times offering a valuable and reliable alternative to other protocols for the synthesis of fluorene analogues. (C) 2013 Elsevier Ltd. All rights reserved.