
%0 Journal Article
%A Best, WM 
%A Wege, D 
%T Intramolecular Diels-Alder Additions of Benzynes to Furans. Application to the Total Synthesis of Biflorin, and the Mansonone-E, I and F
%J Australian Journal of Chemistry
%D 1986/04/01
%V 39
%N 4
%P 647-666
%K 
%R https://doi.org/10.1071/CH9860647
%U https://www.publish.csiro.au/paper/CH9860647 
%X Benzynes, generated either by the debromination of an appropriately substituted (o-dibromobenzene, or by the thermolysis of a substituted diazotized anthranilic acid, have been trapped intramolecularly by an attached furan moiety. One such adduct (41) has been transformed into 6,9-dimethylnaphtho[1,8-bc]pyran-3(2H)-one (43), which served as the key intermediate for the total synthesis of the title compounds, all of which are derivatives of 6,9-dimethylnaphtho[1,8-bc]pyran-7,8-quinone. 
