U. Hess et al., SYNTHESIS OF 4-ARYL-1-LAMBDA(2),2-LAMBDA( 4)-DITHIA-3,4-DIAZA-BUTA-1,2-DIENES, A NEW DITHIADIAZABUTADIENE SYSTEM, Die Pharmazie, 49(2-3), 1994, pp. 121-125
4-Aryl-1 lambda(2),2 lambda(4)-dithia-3,4-diaza-buta-1,2 1a-12a as rep
resentatives of a dithiadiazabutadiene structure in which sulphur occu
pies a different oxidation number are synthesized by reaction of diazo
tated acceptor-substituted aryl- and hetarylamines 1-12 with thiosulfa
tes or disodium disulfide in strong acid solution. For some examples a
first pharmacological test indicate an immune-stimulating effect. Ana
lytical examination as well as MNDO calculation which give some mechan
istical insight, supplements the new synthesis.