H. Kopf et H. Balz, SYNTHESIS OF BENZO-BRIDGED, 5-MEMBERED ES (2)C(2) HETEROCYCLES WITH ECL MOIETIES (E=P, AS, SB, BI) STARTING FROM 1,2,4,5-TETRAMERCAPTOBENZENE, Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 49(12), 1994, pp. 1674-1676
The benzo-bridged, heterocyclic compounds [E(Cl)S-2-1,2]C6H2[4,5-S(2)E
(Cl)] (E = P (1), As (2), Sb (3), Bi (4)) have been obtained as air-st
able solids from the reaction of ECl(3) with 1,2,4,5-(HS)(4)C6H2 in di
ethyl ether. 1-4 are insoluble in common solvents and have been charac
terized mainly by elemental analyses and their infrared and mass spect
ra.