SYNTHESIS AND SPECTRAL-ANALYSIS OF 8-SUBSTITUTED DINAPHTHO[2,1 D 1',2'G] [1,3,6,2]DIOXATHIAPHOSPHOCIN 8-OXIDES/

Synthesis and spectral analysis of several 8-substituted dinaphtho[2,1 -d: 1',2'-g][1,3, 6,2]dioxathiaphosphocin 8-oxides have been described . An X-ray crystallographic study of 8-(2',3'- dimethylphenoxy)dinapht ho[2, 1 - d: 1',2'-g][1,3,6,2]dioxathiaphosphocin 8-oxide has indicate d that, in the solid state, the dioxathiaphosphocin ring is in a disto rted-boat-like conformation with the P=O group and bridged S atom dire cted away from each other. Electron impact mass spectra showed M(+) an d (M-OR)(+) ions, containing the dioxathiaphosphocin ring system, conf irming the structures of the esters. (C) 1995 John Wiley & Sons, Inc.