从产物分布的观点出发,已经研究了二锂联苯基(Li 2 C 12 H 10)与烷基氟化物的反应。两种主要的反应途径,亲核取代(S N 2)和电子转移(ET),可以竞争产生相同的烷基化产物,即所谓的S N 2–ET二分法。S N 2似乎是与伯烷基氟化物(n -RF)相互作用的主要机理。烷基化反应的收率很高,所得的烷基化二氢联苯阴离子(n -RC 12 H 10 Li)可以用第二种常规亲电试剂(E +),得到了合成上令人感兴趣的脱芳香化联苯衍生物(n -RC 12 H 10 E)。随着我们向仲(s -RF)和叔烷基氟化物(t -RF)的转移,反应产生了更多的ET产物,在这种情况下,该机理似乎主要由ET主导。在这种情况下,烷基化通过自由基偶合仍然可行,从而获得合成吨-RC 12 ħ 10 E,虽然在较低的产率。对这个S N的合理解释基于将5-己烯基氟化物和1,1-二甲基-5-己烯基氟化物用作与Li
[EN] HALOGENATED HETEROALKENYL- AND HETEROALKYL-FUNCTIONALIZED ORGANIC COMPOUNDS AND METHODS FOR PREPARING SUCH COMPOUNDS<br/>[FR] COMPOSÉS ORGANIQUES HALOGÉNÉS À FONCTION HÉTÉROALCÉNYLE ET HÉTÉROALKYLE ET LEURS PROCÉDÉS DE PRÉPARATION
申请人:ARKEMA INC
公开号:WO2019067394A1
公开(公告)日:2019-04-04
A method for synthesizing halogenated organic compounds, such as halogenated alkenyl group-containing and halogenated alkyl group-containing compounds having a heteroatom (e.g., O,N.S) coupled to a carbon atom of a halogenated alkenyl or halogenated alkyl group, involves reacting a halogenated olefin such as a chloro-substituted trifluoropropenyl compound with an active hydrogen-containing organic compound such as an alcohol (e.g., an aliphatic monoalcohol, aliphatic polyalcohol, or a phenolic compound), a primary amine, a secondary amine or a thiol.
On the reactivity of naphthalene and biphenyl dianions: tying up loose ends concerning an S<sub>N</sub>
2-ET dichotomy in alkylation reactions
作者:Inmaculada Blasco、Henoc Pérez、Albert Guijarro
DOI:10.1002/poc.3423
日期:2015.6
Naphthalene and biphenyl dianions are interesting compounds that can be obtained by double reduction of the corresponding arenes in solution with certain alkali metals. These dianions are highly reactive and rather elusive species with very high laying and highly delocalized electrons. They share many aspects of the reactivity of the alkali metal they originated from and consequently behave primarily
PROCESS FOR PRODUCING (FLUOROALKYLTHIO) ACETIC ACID ESTER
申请人:Hirota Masaji
公开号:US20120101294A1
公开(公告)日:2012-04-26
Disclosed is a process for producing a (fluoroalkylthio)acetic acid ester represented by the formula (3) wherein R, R
1
and R
2
have the same meanings as defined below, which comprises reacting a thioglycolic acid ester represented by the formula (1) wherein R represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and R
1
represents an alkyl group having 1 to 4 carbon atoms, with fluoroolefin represented by the formula (2) wherein R
2
represents a fluoroalkyl group having 1 to 5 carbon atoms, in the presence of a radical generator.
[EN] IMPROVED PROCESS FOR PREPARING CHLOROALKANES AND/OR CHLOROFLUOROALKANES<br/>[FR] PROCÉDÉ AMÉLIORÉ DE PRÉPARATION DE CHLOROALCANES ET/OU DE CHLOROFLUOROALCANES
申请人:BLUE CUBE IP LLC
公开号:WO2019195258A1
公开(公告)日:2019-10-10
The present invention provides processes for the production of chloroalkanes, chlorofluoroalkanes, or combinations thereof from one or more alkenes, chlorinated alkenes, fluorinated alkenes, or combinations thereof.
Surface treated oriented fluorocarbon films can be laminated to substrates using an adhesive composition of a selected copolymer of vinylidene fluoride and hexafluoropropylene and a selected diisocyanate curing agent in an organic solvent.