SYNTHESIS OF NOVEL 2,10-DICHORO-12-TRICHLOROMETHYL-6-SUBSTITUTED XANTHATO-12H-DIBENZO[d,g] [1,3,2] DIOXAPHOSPHOCIN 6-SULFIDES

New eight-membered phosphorous heterocyclic compounds such as 2,10 – dichloro – 12 – trichloromethyl - 6 – substituted xanthato – 12H – dibenzo[d,g] [1,3,2] dioxaphosphocin 6–sulfides were synthesized by reacting equimolar quantities of alcohols, carbondisulfide and 2,6,10-trichloromethyl-12H–dibenzo[d,g] [1,3,2] dioxaphosphocin 6 – sulfide(1) in the presence of dimethylaminopyridene(DMAP). The structures of the products were confirmed by analytical and IR, 1H, 13C, 31P, Mass spectral data and they were tested for their antimicrobial activity.