Nucleophilic tetrafluoroethylation of carbonyl compounds with fluorinated sulfones
摘要:
Global interest in the "CF2CF2" building blocks (tetrafluoroethylene, tetrafluoroethyl) is still rather marginal. One of the main reasons is the lack of efficient and selective tetrafluoroethylation reagents. In this context, we present here three new reagents (PhSO2CF2CF2R, R = SiMe3, SiEt3 and H) capable of nucleophilic addition to carbonyl compounds, thus affording rare alcohols containing the CF2CF2 motif. The experimental observations are complemented with a brief computational study which confirmed that the reactivity of the nudeophilic reagents is strongly dependent on electronic properties of substituents on both ends of the CF2CF2 group. (C) 2014 Elsevier B.V. All rights reserved.
Nucleophilic tetrafluoroethylation of carbonyl compounds with fluorinated sulfones
摘要:
Global interest in the "CF2CF2" building blocks (tetrafluoroethylene, tetrafluoroethyl) is still rather marginal. One of the main reasons is the lack of efficient and selective tetrafluoroethylation reagents. In this context, we present here three new reagents (PhSO2CF2CF2R, R = SiMe3, SiEt3 and H) capable of nucleophilic addition to carbonyl compounds, thus affording rare alcohols containing the CF2CF2 motif. The experimental observations are complemented with a brief computational study which confirmed that the reactivity of the nudeophilic reagents is strongly dependent on electronic properties of substituents on both ends of the CF2CF2 group. (C) 2014 Elsevier B.V. All rights reserved.
An Efficient Preparation of New Sulfonyl Fluorides and Lithium Sulfonates
作者:Fabien Toulgoat、Bernard. R. Langlois、Maurice Médebielle、Jean-Yves Sanchez
DOI:10.1021/jo701318n
日期:2007.11.1
polyfluoroalkanesulfonyl fluorides is reported. This method, based on the synthesis of polyfluoroalkyl trimethyl silanes (precursors of polyfluoroalkylsulfinates) as intermediates, allows the successive transformations to be carried out in one pot. Moreover, these sulfonyl fluorides can be obtained from the corresponding sulfinates by electrophilic fluorination. This original approach avoids isolation and purification
报道了几种多氟链烷磺酰氟的有效制备方法。该方法基于多氟烷基三甲基硅烷(多氟烷基亚磺酸盐的前体)作为中间体的合成,可以在一个罐中进行连续的转化。而且,这些磺酰氟可以通过亲电氟化从相应的亚磺酸盐获得。这种原始方法避免了某些热或水解不稳定中间体的分离和纯化。因此,已经从卤代二氟甲基化的前体RCF 2 X(X = F,Br; R = ArC(O),ArS(O)n(CF 2)m ; n = 0,1,2; m制备了一系列新的磺酰氟。 = 1、2),并已转化为相应的磺酸锂,它们有潜力用作锂电池的电解质。
The Mild Oxidation of Some Alpha-Difluoro Sulfides to Sulfones with Sodium Perborate
作者:Gary O. Page
DOI:10.1080/00397919308009837
日期:1993.3
Abstract Sodium perborate in acetic acid is an effective reagent for the mild oxidation of some electron-deficient sulfides to sulfones.