Nuclear magnetic resonance spectra of some aromatic sulphur derivatives
作者:C. Brown、D. R. Hogg
DOI:10.1039/j29680001315
日期:——
The n.m.r. spectra of series of 4-substituted-2-nitrophenyl acetonyl sulphides, ethyl sulphides, benzyl sulphides, and ethyl disulphides and of some ethyl 4-substituted-2-nitrobenzenesulphenates have been measured. The frequencies of the methyl and methylene protons give a good correlation with the Hammett σ-constant (r>0·990). Transmission factors of 0·67 ± 0·07, 0·60 ± 0·09, and 0·69 ± 0·16 were
Studies of Thioiminocarbonates. I. The Formation and Decomposition of<i>O</i>-Alkyl<i>S</i>-Aryl Thioiminocarbonates in the Reaction of Aryl Thiocyanates with Alcohols in the Presence of the Cyanide Ion
作者:Kazuhiko Tanaka、Jun-ichi Hayami、Aritsune Kaji
DOI:10.1246/bcsj.44.2815
日期:1971.10
The reactions of aryl thiocyanates (I) with alcohol in the presence of cyanideion were found to give alkyl aryl sulfides (III). The intermediate was isolated in the case of p-tolyl thiocyanate with methanol at 0°C and was determined to be O-methyl S-p-tolyl thioiminocarbonate (IIa) on the basis of NMR and IR spectral studies. The treatment of IIa with the cyanideion afforded methyl p-tolyl sulfide
A novel copper-catalyzed decarboxylative methylthiolation of arenecarboxylate salts has been realized using DMSO as the methylthiolation source. Various potassium arylcarboxylates underwent decarboxylative methylthiolation under air to furnish the corresponding aryl methyl thioethers in moderate to excellent yields. The reaction tolerated a wide variety of functional groups. Notably, the synthesis