
%0 Journal Article
%A Hewgill, FR 
%T (Z)-2,2',4,4'-Tetramethoxystilbene-5,5'-diol and Its Oxidation
%J Australian Journal of Chemistry
%D 1994/03/01
%V 47
%N 3
%P 461-470
%K 
%R https://doi.org/10.1071/CH9940461
%U https://www.publish.csiro.au/paper/CH9940461 
%X In an attempt to isolate a phenanthrene-4,5-quinone the title stilbenediol (24) was prepared by a Wittig reaction. Deisopropylation of a (Z)- diisopropyloxystilbene with boron trichloride resulted in isomerization to the (E) diol (15), but the required (Z) diol (24) was prepared successfully from acetoxy -substituted intermediates, which were hydrolysed during the course of the reaction. Chemical or photochemical oxidation failed to give the desired phenanthrene -  4,5-quinone. A phenanthrenediquinone was obtained by oxidation of the (Z)-stilbenediol (24) with I,I-diacetoxyiodobenzene. 
