N-Fluoropyridinium salts provide a new system of fluorinatingagents by which a wide range of nucleophilic substrates differing in reactivity can be fluorinated due to the varying degree of fluorinating power and also fluorinated very selectively through structural alteration. The scope of selective fluorination should be broadened considerably on the basis of the present results. The N-fluoropyridinium
A range of alkenes are converted to vicinal fluoroacetamides in high yield by reaction with 1-fluoro-4-hydroxy-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate)(AccufluorTM NFTh) in acetonitrile solution.
Syntheses of Mono-, Di-, and Trifluorinated Styrenic Monomers
作者:Véronique Gouverneur、Justyna Walkowiak、Teresa del Campo、Bruno Ameduri
DOI:10.1055/s-0029-1218785
日期:2010.6
Concise syntheses of gram quantities of three fluorinated α-methylstyrenic monomers suitable for polymerisation studies are disclosed, all based on the use of reasonably priced commercially available starting materials and reagents. fluorination - nucleophilic fluoroalkylation - palladium catalysis - monomer synthesis - functional fluoropolymers
A group effort: Reported is the title reaction using a polycomponent catalytic system involving commercially available Selectfluor, a putative radical precursor N‐hydroxyphthalimide, an anionic phase‐transfer catalyst (KB(C6F5)4), and a copper(I) bis(imine). The catalyst system formed leads to monofluorinated compounds selectively (see example) without the necessity for an excess of the alkane substrate
共同努力:报告为使用多组分催化体系的标题反应,涉及可商购的Selectfluor,推定的自由基前体N-羟基邻苯二甲酰亚胺,阴离子相转移催化剂(KB(C 6 F 5)4)和铜(I)二(亚胺)。形成的催化剂体系选择性地产生单氟化化合物(参见实施例),而无需过量的烷烃底物。
An Electroreductive Approach to Radical Silylation via the Activation of Strong Si–Cl Bond
作者:Lingxiang Lu、Juno C. Siu、Yihuan Lai、Song Lin
DOI:10.1021/jacs.0c10899
日期:2020.12.23
In this context, reactions mediated by silyl radicals have become increasingly attractive but methods for accessing these intermediates remain limited. We present a new strategy for silyl radical generation via electroreduction of readily available chlorosilanes. At highly biased potentials, electrochemistry grants access to silyl radicals through energetically uphill reductive cleavage of strong