Equilibrium Acidities of Nitroalkanes in an Ionic Liquid
作者:Feixiang Gao、Pengju Ji、Jin-Pei Cheng
DOI:10.1021/acs.joc.8b02183
日期:2018.12.21
The acidity ladder scale in [BMPY][NTf2] was successfully expanded toward the weak acidity region for about five more pK units compared to the previously established one. This allows the acidities of a series of 13 aliphatic and aromatic nitroalkanes to be determined accurately by the UV–vis spectroscopic method. The acidity of nitroalkane in [BMPY][NTf2] covers ∼8 pK units and is significantly weaker
Controlled monosulphenylation at carbon adjacent to electron-withdrawing groups can be achieved be the controlled reduction of readily available bis-sulphenylated products.
通过控制还原易得的双-磺基化产物,可以实现与吸电子基团相邻的碳上的受控单磺基化。
Zur Aminomethylierung geminaler Dialkylsulfon-alkane. 40. Mitt. über α-halogenierte Amine, zugleich 19. Mitt. über N-α-Halogenalkyl-carbonsäureamide
作者:H. Böhme、H. Rußmann、M. Junga
DOI:10.1002/ardp.19723051210
日期:——
1,1‐Dialkylsulfon‐äthane sowie Halogen‐dialkylsulfon‐methane lassen sich über ihre Carbanionen mit N‐Chlormethyl‐aminen, ‐amiden oder ‐imiden aminomethylieren.
The oxidation of dithioacetals with 16 eq of 30% hydrogenperoxide in the presence of 10 mol% niobium(V) chloride at room temperature provides bissulfonylmethylenes in high yields.
Reactions of Bis-alkylsulfonylmethanes and Their Halogen-substituted Derivatives
作者:Shigeru Oae
DOI:10.1246/bcsj.28.41
日期:1955.1
Bis-alkylsulfonylmethane did react with alkyl p-toluenethiosulfonate giving bis-alkylsulfonyl-alkylmercaptomethane. Bis-alkylsulfonyl-halogenomethane was found to react with metal alkoxide giving original bis-alkylsulfonylmethane. It was also found that bis-alkylsulfonyl-dibromomethane readily reacts with silver nitrate giving the monobromo-compound while its dichloro-analog resists in the same condition