Application of the BHQ benzannulation reaction to the synthesis of benzo-fused coumarins
作者:James A. Bull、Cristina Luján、Michael G. Hutchings、Peter Quayle
DOI:10.1016/j.tetlet.2009.03.077
日期:2009.7
A new approach to the synthesis of the 6H-benzo[d]naphthal[,2-b]pyran-6-one ring system present in the gilvocarcin family of antibiotics is described. The key feature of this approach is the application of a new benzannulation strategy (the 'BHQ Reaction') whereby readily available ortho-allylaryl trichloroacetates are transformed into naphthalene derivatives via a cascade of reactions involving an initial ATRC reaction followed by the extrusion of CO2. (C) 2009 Elsevier Ltd. All rights reserved.