The aromatic perfluoroalkylation catalyzed by a copper(I) salt with bis(perfluoroalkyl)zinc reagents Zn(RF)2(DMPU)2, which were prepared and then isolated as a stable white powder from perfluoroalkyl iodide and diethylzinc, was accomplished to provide the perfluoroalkylated products in good‐to‐excellent yields. The advantages of this reliable and practical catalytic reaction are 1) air‐stable and easy‐to‐handle
Solvated Nickel Complexes as Stoichiometric and Catalytic Perfluoroalkylation Agents**
作者:Scott T. Shreiber、David A. Vicic
DOI:10.1002/anie.202104559
日期:2021.8.9
acetonitrile-solvated [(MeCN)Ni(C2F5)3]− was prepared in order to compare and contrast its reactivity with the known [(MeCN)Ni(CF3)3]− towards organic electrophiles. Both [(MeCN)Ni(CF3)3]− and [(MeCN)Ni(C2F5)3]− successfully react with aryl iodonium and diazonium salts as well as alkynyl iodonium salts to give fluoroalkylated organic products. Electrochemical analysis of [(MeCN)NiII(C2F5)3]− suggests that, upon
制备乙腈溶剂化的 [(MeCN)Ni(C 2 F 5 ) 3 ] -以比较和对比其与已知的 [(MeCN)Ni(CF 3 ) 3 ] -对有机亲电试剂的反应性。[(MeCN)Ni(CF 3 ) 3 ] -和[(MeCN)Ni(C 2 F 5 ) 3 ] - 均成功地与芳基碘盐和重氮盐以及炔基碘盐反应,得到氟烷基化有机产物。[(MeCN)Ni II (C 2 F 5 ) 的电化学分析3 ] -表明,在电氧化成 [(MeCN) n Ni III (C 2 F 5 ) 3 ] 后,全氟乙基自由基发生还原均裂,同时形成 [(MeCN) 2 Ni II (C 2 F 5 ) 2 ]。使用[(MeCN)Ni(CF 3 ) 3 ] -或相关的[Ni(CF 3 ) 4 ] 2-成功地实现了富电子芳烃的催化CH三氟甲基化. 溶剂化镍配合物的化学计量反应表明,“无配体”镍在催化相关条件下特别能够充当 CF 3基团的储库。
The present invention relates to pentafluoroethylating compositions, processes for obtaining them, and their use in pentafluoroethylation reactions.
本发明涉及五氟乙基化组合物,获取它们的过程,以及它们在五氟乙基化反应中的应用。
Direct Synthesis of Pentafluoroethyl Copper from Pentafluoropropionate as an Economical C<sub>2</sub>F<sub>5</sub> Source: Application to Pentafluoroethylation of Arylboronic Acids and Aryl Bromides
作者:Hiroki Serizawa、Kohsuke Aikawa、Koichi Mikami
DOI:10.1021/ol501332g
日期:2014.7.3
synthesis of pentafluoroethyl copper (CuC2F5) from a cupratereagent and ethyl pentafluoropropionate as one of the most economical and useful pentafluoroethyl sources was accomplished. The advantages of this method are; all the reagents employed are low-cost and operationally simple, and the CuC2F5 reagent is prepared in virtually quantitative yield. Furthermore, the CuC2F5 reagent prepared was successfully
由铜酸盐试剂和作为最经济和最有用的五氟乙基源之一的五氟丙酸乙酯直接合成了五氟乙基铜(CuC 2 F 5)。这种方法的优点是:所有使用的试剂都是低成本且操作简单的,并且CuC 2 F 5试剂的制备实际上是定量的。此外,制得的CuC 2 F 5试剂已成功应用于芳基硼酸和芳基溴化物的五氟乙基化反应的两种类型,从而以良好至优异的产率提供了五氟乙基化的芳族产品,包括大规模操作。
From C
<sub>1</sub>
to C
<sub>2</sub>
: TMSCF
<sub>3</sub>
as a Precursor for Pentafluoroethylation
作者:Qiqiang Xie、Lingchun Li、Ziyue Zhu、Rongyi Zhang、Chuanfa Ni、Jinbo Hu
DOI:10.1002/anie.201807873
日期:2018.10
A highly efficient copper‐mediated aromatic pentafluoroethylation method using TMSCF3 as the sole fluoroalkyl source is described. The reaction proceeds by a key C1 to C2 process, that is, the generation of CuCF3 from TMSCF3, followed by a subsequent spontaneous transformation into CuC2F5. Various aryl iodides were pentafluoroethylated with the TMSCF3‐derived CuC2F5. This method represents the first