Zhang, Liang published the artcileSulfonium Salts Enable the Direct Sulfenylation of Activated C(sp3)-H Bonds, Synthetic Route of 517-23-7, the publication is European Journal of Organic Chemistry (2021), 2021(9), 1365-1369, database is CAplus.
Herein, the direct α-sulfenylation of a series of β-dicarbonyl, β-ketophosphonate, and β-ketonitrile compounds, mediated by sulfonium salts has been described. Traditionally, sulfonium salts which are synthesized by activation of dialkylsulfoxides serve as oxidizing agents or precursors of sulfur ylide. In this transformation, sulfonium salts as readily prepared and operationally simple sulfenylation reagents firstly achieved alkylsulfenylation of various activated C(sp3)-H bonds with the formation of tetra-substituted carbon center. Thus, e.g., sulfenylation of Me 2-oxocyclopentanecarboxylate with DMSO in presence of AcCl as activator and NaSbF6 in MeCN afforded I (79%).
European Journal of Organic Chemistry published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C3H7NO2, Synthetic Route of 517-23-7.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics