Novel macrocyclic polysulphur compounds. 7,15,17,19-Tetra-alkoxy- 2,3,4,5,10,11,12,13-octathiatricyclo[12,2,2,2]eicosa-6,8,14,16,17,19-hexaenes and 2,3,7,8-tetra-alkoxythianthrens; products of the catalysed reaction of aromatic ethers and sulphur monochloride

Abstract

The preparation of 7,15,17,19-tetra-alkoxy-2,3,4,5,10,11,12,13-octathiatricyclo[12,2,2,2]eicosa-6,8,14,16,17,19-hexaenes (I), sulphur analogues of paracyclophane, is reported. Catalytic hydrogenation of these novel sulphur macrocycles yielded the 2,5-dialkoxybenzene-1,4-dithiols, whilst aqueous chlorination at room temperature yielded the corresponding 2,5-dialkoxybenzene-1,4-disulphonyl dichlorides. Thianthren has now been prepared from chlorodithiobenzene.