
%0 Journal Article
%A Badger, GM 
%A Cheuychit, P 
%A Sasse, WHF 
%T Synthetical applications of activated metal catalysts. XXII. The desulphurization of 2,5-Diphenyl-1,4-dithiin
%J Australian Journal of Chemistry
%D 1964/03/01
%V 17
%N 3
%P 353-365
%K 
%R https://doi.org/10.1071/CH9640353
%U https://www.publish.csiro.au/paper/CH9640353 
%X The desulphurization of 2,5-diphenyl-1,4-dithiin (II) with a hydrogen-poor Raney nickel (W-7J Raney nickel) has been shown to give 2,4-diphenylthiophen together with three hydrocarbons, viz. cis- and trans-1,3-diphenylbuta-1,3-diene, and 1,3-diphenylcyclobut-1-ene. In another experiment with a Raney nickel having a higher hydrogen content, the hydrocarbon fraction was found to be 1,3-diphenylbut-2- ene. It has been concluded that chemisorption via one sulphur atom leads to 2,4-diphenylthiophen, but that chemisorption via both sulphur atoms leads to the intermediate diradicals (VI) which subsequently react further to give the observed hydrocarbon products. 
