Deoxygenation of Dithiirane 1-Oxides with Lawesson's Reagent Leading to the Corresponding Dithiiranes
摘要:
3,3-Disubstituted dithiirane 1-oxides were efficiently reduced with Lawesson's reagent (LR) to give the corresponding dithiiranes. X-ray diffraction analysis of 3,3di(1-adamantyl)dithiirane is reported. Reaction of S-34- labeled 3,3-di(1-adamantyl)dithiirane 1-oxide with LR produced the corresponding dithiirane in which the S-34 atoms were retained quantitatively.
Structure Elucidation of 6-<i>t</i>-Butyl-6-phenylpentathiane Monoxides by X-ray Crystallography and DFT Calculations
作者:Akihiko Ishii、Hideaki Oshida、Juzo Nakayama
DOI:10.1246/bcsj.75.319
日期:2002.2
6-t-Butyl-6-phenylpentathiane was oxidized with trifluoroperacetic acid (CF3CO3H) or dimethyldioxirane (DMD) at -20 °C. Oxidation with CF3CO3H yielded pentathiane 3-oxide as the main product, whereas that of DMD gave 1- and 3-oxides. The structures of 1- and 3-oxides were finally determined by X-ray crystallographic analysis. DFT calculations of the NMR chemical shifts were performed on the chair and
3,3-Disubstituted dithiirane 1-oxides were efficiently reduced with Lawesson's reagent (LR) to give the corresponding dithiiranes. X-ray diffraction analysis of 3,3di(1-adamantyl)dithiirane is reported. Reaction of S-34- labeled 3,3-di(1-adamantyl)dithiirane 1-oxide with LR produced the corresponding dithiirane in which the S-34 atoms were retained quantitatively.