CONFORMATION OF 2-PHOSPHORYL AND 2-THIOPHOSPHORYL 1,3-DITHIANES AND RELATED COMPOUNDS. COMMENTS ON THE ORIGIN OF S-C-P ANOMERIC INTERACTIONS.

Article abstract of DOI:10.1016/S0040-4039(00)95785-X

A relationship was found between the γ-effect values in 13C NMR spectra and the solution conformation of the title compounds.Base-catalyzed equilibration of anancomeric 2-phosphoryl and 2-thiophosphoryl substituted 5-t-butyl-1,3-dithianes showed that axial preference increases in the order: Ph2P(S)