6462-31-3Relevant articles and documents
High Chemoselectivity in the Construction of Aryl Methyl Sulfones via an Unexpected C-S Bond Formation between Sulfonylhydrazides and Dimethyl Phosphite
Liu, Teng,Yu, Shiwen,Shen, Xiang,Li, Yixian,Liu, Jianjun,Huang, Chao,Cheng, Feixiang
, p. 153 - 160 (2021/10/04)
A highly chemoselective route to aryl methyl sulfones via an unexpected C S bond formation between sulfonylhydrazides and dimethyl phosphite catalyzed by NaI under mild conditions has been established. This transformation provides an alternative and metal-free pathway to acquire various aryl methyl sulfones in good to excellent yields. Notably, dimethyl phosphite was employed as a stable and readily available alkyl source.
Rapid and mild sulfonylation of aromatic compounds with sulfonic acids via mixed anhydrides using Tf2O
Alizadeh, Abdolhamid,Khodaei, Mohammd Mehdi,Nazari, Ehsan
, p. 6805 - 6808 (2008/03/12)
An efficient and direct sulfonylation of aromatic compounds with sulfonic acids is described via mixed anhydrides in short reaction times using Tf2O in nitromethane at room temperature.
Investigations on the iron-catalyzed asymmetric sulfide oxidation
Legros, Julien,Bolm, Carsten
, p. 1086 - 1092 (2007/10/03)
The development of an enantioselective sulfide oxidation involving a chiral iron catalyst and aqueous hydrogen peroxide as oxidant is described. In the presence of a simple carboxylic acid, or a carboxylate salt, the reaction affords sulfoxides with remarkable enantioselectivities (up to 96% ee) in moderate to good yields. The influence of the structure of the additive on the reaction outcome is reported. In the sulfoxide-to-sulfone oxidation a kinetic resolution (with s = 4.8) occurs, which, however, plays only a negligible role in the overall enantioselective process. Furthermore, a positive nonlinear relationship between the ee of the product and that of the catalyst has been found. On the basis of these observations, a possible catalyst structure is proposed.