
%0 Journal Article
%A Becker, H 
%A Skelton, BW 
%A White, AH 
%T On the reaction of diazomethane with 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone. Formation and crystal structure analysis of 2,5-Diacetoxy-3,4-dichlorocyclohepta-1,3,5-triene-1,6-dicarbonitrile
%J Australian Journal of Chemistry
%D 1981/10/01
%V 34
%N 10
%P 2189-2193
%K 
%R https://doi.org/10.1071/CH9812189
%U https://www.publish.csiro.au/paper/CH9812189 
%X The structure of a compound previously believed to be the diacetate of 2,3-dichloro-5,6-dicyano-4- hydroxybenzyl alcohol has been analysed by X-ray methods and found to be that of the isomeric 2,5-diacetoxy-3,4-dichlorocyclohepta-1,3,5-triene-1,6-dicarbonitrile. Consequently, the product formed in the reaction of diazomethane with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (ddq), earlier thought to be an oxirano-substituted cyclohexa-2,5-dienone, is 3,4-dichloro-2,5-dioxobicyclo-[4,1,0]hept-3-ene-1,6-dicarbonitrile. 
