Intramolecular Heck Reaction on Bromobenzyloxy-Substituted Chromenes: Formation of Chelated Ketones
作者:Amarendra Patra、Tanusri Mahapatra
DOI:10.1080/00397911.2012.655358
日期:2013.6.3
Heck reaction on 2-bromobenzyloxy-substituted 4H-chromene derivatives using Pd(OAc)(2) in Aliquat 336 and N,N-dimethylformamide mixture leads to intramolecular heteroannulation along with hydrolysis, affording chelated 6H-benzo[c]chromen-2-yl ketones. The method offers Pd(0)-catalysis and regioselectivity in product formation. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.