Butyl sultone

Besides the above-described polymerizable monomer additives, snlfnr-based componnds were proposed in our group as additives for forming anode SEI, inclnding butyl sultone (BS) [82, 83], propane sultone (PS) [84, 85], prop-l-ene-l,3-sulton (PES) [86], as well as ES [54,87], These sulfur family additives have higher reduction potentials than the electrolyte solvents, as shown in Fig. 5.29. 

Two-dimensional thin-layer chromatography. This method is used to verify the presence of terminal 5-sultones, terminal unsaturated y-sultone, and terminal 2-chloro-y-sultone, if they are detected in the gas chromatographic determination. After extraction of the neutral oil from the AOS sample, the neutral oil is made up volumetrically to at least a 10% solution in hexane. Of this solution 3 pi is spotted onto a silica gel TLC plate together with standard sultones. It is twice developed with 2-propyl ether and then after turning the plate 90° twice developed with 60/40 n-butyl chloride/methylene chloride. The... 

A reactor containing 4-butane sultone (0.20 mol) dissolved in 150 ml of THE was cooled 70°C and treated dropwise with 21.0 ml of lOM n-butyl lithium followed by... 

Preparation of Poly(t-Butyl 5-Norbornene-2-Carboxylate-co-Carboxy-t-Butoxy Sultone Norbomene)... 

BMA, n-butyl methacrylate DMA, /V,/V-dimethylacrylamide DMAEMA, dimethylaminoethyl methacrylate PEGMA, poly(ethylene glycol) methyl ether methacrylate SSNa, 4-sodium sultonate styrene. 

Sultines, Sultones, and Related Systems.—A general synthesis of sultines (144) (cyclic sulphinate esters), based on the reaction of t-butyl hydroxyal-kyl sulphoxides (145) with SO2CI2 or N-chlorosuccinimide, has been developed. The method was shown to be suitable for the preparation of sultines varying in ring size from 5 to 8 and having a variety of alkyl or aryl substitution patterns. 

A sulfuric acid-functionalized IL covalently supported on a polymer was successfully prepared for the esterification reactions [115], The catalyst was prepared by copolymerization of vinyl benzene, divinylbenzene, and vinyl chloromethyl benzene, followed by covalent attachment of imidazole group, reacted with 1,3-propane sultone, and then treated by sulfuric acid. Compared to the results when using free l-(3-sulfopropyl)-3-H-imidazolium hydrosulfate ([SOjH-PHImJpSOJ) as catalyst directly, those of the polymer-supported IL catalyst showed similar activity. For the esterification reaction of acetic acid and butanol, the yields to butyl acetate were... 

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