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
Derivatives of 4-chloro-3,5-dinitrobenzotrifluoride. 3. Synthesis of 1,6-dinitro-3,8-bis(trifluoromethyl)thianthrene and related compounds
作者:J. J. D'Amico、C. C. Tung、W. E. Dahl、D. J. Dahm
DOI:10.1021/jo00437a025
日期:1977.8
One-Pot Synthesis and Asymmetric Oxidation of 2-Nitro-4-(Trifluoromethyl)Benzene Containing Sulfides
作者:Konstantin S. Rodygin、Svetlana A. Rubtsova、Alexander V. Kutchin、Pavel A. Slepukhin
DOI:10.1080/10426507.2010.547893
日期:2011.9.1
method for the preparation of 2-nitro-4-(trifluoromethyl)benzene containing sulfides from 1,1′-disulfanediylbis[2-nitro-4-(trifluoromethyl)benzene] is proposed. The corresponding enantiomerically enriched sulfoxides with up to 78% enantiomeric excess are prepared by the asymmetric oxidation of sulfides using a modified Sharpless method. The yield of sulfoxides is shown to decrease with an increase in