A new simple and convenient method for the synthesis of substituted 2,6,9-trioxabicyclo[3.3.1]-nona-3,7-dienes from arylmalondialdehydes
作者:Anthony Fernandes、Jérôme Marrot、Jean-Pierre Gesson、Sébastien Papot
DOI:10.1016/j.tetlet.2006.06.043
日期:2006.8
A new convenient synthesis of substituted 2,6,9-trioxabicyclo[3.3.1]-nona-3,7-dienes is described. These new 'bridged bis-dioxines' were obtained in moderate to good yields by dimerization of the corresponding arylmalondialdehydes in the presence of 0.5 equiv of TMSOTf. The structure of the nitro derivative le has been proven by X-ray crystallography. A mechanism for this reaction is proposed. (c) 2006 Elsevier Ltd. All rights reserved.