SYNTHESIS AND PROPERITES OF 7-(1,3-DITHIOL-2-YLIDENE)-3,5-CYCLOHEPTADIENE-1,2-DIONE (OR 7,10-DITHIASESQUIFULVALENE-1,2-QUINONE) DERIVATIVES

Article abstract of DOI:10.1246/cl.1981.805

Three stable 4-tert-butyl, 5-bromo, and 3,5-dibromo derivatives of 7,10-dithiasesquifulvalene-1,2-quinone (or o-tropoquinone dithiolide) were synthesized and their physical and chamical properties were discussed on the basis of their spectroscopic data and the frontier electron density distribution, a stabilizing (reactivity-lowering) effect of the sulfur atom on these compounds being well dissplayed in the density distribution.