- Visible-light-induced installation of oxyfluoroalkyl groups
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(Hetero)aryloxytetrafluoroethylation of heteroaromatics and alkenes has been achieved by visible-light photocatalysis utilizing readily synthesized oxyfluoroalkyl reagents. The mild reaction conditions and the high diversity on both substrates and oxyfluoroalkyl reagents make this a useful method for late-stage modifications in the development of various functional molecules.
- Park, Gwi-Rim,Moon, Jisu,Cho, Eun Jin
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supporting information
p. 12786 - 12789
(2017/12/06)
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- Synthesis and Reactivity of Fluoroalkyl Copper Complexes by the Oxycupration of Tetrafluoroethylene
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The copper(I)-mediated generation of -OCF2CF2- moieties by the oxycupration of tetrafluoroethylene (TFE) using either copper aryloxides or alkoxides is disclosed. The key intermediates, 2-aryloxy-1,1,2,2-tetrafluoroethyl and 2-alkoxy
- Ohashi, Masato,Adachi, Takuya,Ishida, Naoyoshi,Kikushima, Kotaro,Ogoshi, Sensuke
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p. 11911 - 11915
(2017/09/21)
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- Copper(0)-mediated fluoroalkylation of iodobenzene with 2-bromo-1,1,2,2-tetrafluoroethyl compounds: Investigation on the influence of R substituent on the reactivity of RCF2Cu species
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We have made a systematic investigation on the copper(0)-mediated tetrafluoroethylenation of iodobenzene with structurally diverse 2-bromo-1,1,2,2-tetrafluoroethyl compounds. A comparison of this reaction with 1,2,2-trifluoro-1-phenylethylation and the known functionalized difluoroalkylation demonstrates that the substituent R of α,α-difluoroalkyl copper species RCF2Cu plays a crucial role on their reactivity, which is believed to be useful for the development of new fluoroalkylation reactions under the promotion of transition metals.
- Zhu, Jieming,Ni, Chuanfa,Gao, Bing,Hu, Jinbo
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p. 139 - 147
(2015/03/04)
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- A novel semi-fluorinated graft copolymer containing perfluorocyclobutyl aryl ether-based backbone
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The synthesis of a series of novel semi-fluorinated graft copolymers bearing perfluorocyclobutyl (PFCB) aryl ether-based backbone and polystyrene side chains is described. This work initially focused on the synthesis of a trifluorovinyl ether (TFVE) monomer containing a bromine atom, which could be employed as an initiating site for atom transfer radical polymerization (ATRP). Thermal cyclopolymerization of this TFVE monomer provided a macromolecular initiator followed by subsequent initiating ATRP of styrene to afford the desired PFCB aryl ether-based graft copolymers.
- Zhang, Sen,Liu, Hao,Deng, Yan,Huang, Xiaoyu
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scheme or table
p. 184 - 189
(2012/02/05)
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- A practical synthesis of aryl tetrafluoroethyl ethers via the improved reaction of phenols with 1,2-dibromotetrafluoroethane
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An efficient and practical synthesis of various aryl tetrafluoroethyl ethers by the reaction of phenols with 1,2-dibromotetrafluoroethane and the subsequent reduction with zinc dust was described. The nucleophilic substitution of 1,2-dibromotetrafluoroethane with phenols initiated by bromophilic attack was improved by using Cs2CO3 as a base and DMSO as a solvent.
- Li, Jianqing,Qiao, Jennifer X.,Smith, Daniel,Chen, Bang-Chi,Salvati, Mark E.,Roberge, Jacques Y.,Balasubramanian, Balu N.
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p. 7516 - 7519
(2008/03/14)
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- Sub-50 nm feature sizes using positive tone molecular glass resists for EUV lithography
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Extreme ultra violet (EUV) lithography is one of the most promising next generation lithographic techniques for the production of sub-50 nm feature sizes with applications in the semiconductor industry. Coupling this technique with molecular glass resists
- Chang, Seung Wook,Ayothi, Ramakrishnan,Bratton, Daniel,Yang, Da,Felix, Nelson,Cao, Heidi B.,Deng, Hai,Ober, Christopher K.
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p. 1470 - 1474
(2007/10/03)
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- Synthesis and characterization of a novel perfluorocyclobutyl aromatic ether-based ABA triblock copolymer
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A novel perfluorocyclobutyl aromatic ether-based ABA triblock copolymer (A: polystyrene block; B: perfluorocyclobutyl aromatic ether-based fluoropolymer block) was synthesized by combination of atom transfer radical polymerization (ATRP) of styrene and th
- Huang, Xiaoyu,Lu, Guolin,Peng, Dan,Zhang, Sen,Qing, Feng-Ling
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p. 7299 - 7305
(2007/10/03)
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- Aromatic monomers with pendant fluoroalkylsulfonate and sulfonimide groups
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Novel styrene and dimethylisophthalate monomers with pendant lithium fluoroalkylsulfonate or sulfonimide functional groups have been prepared from the corresponding phenolic intermediates. One route involves several steps and uses 1,2-dibromotetrafluoroethane as the key fluorinated intermediate. A second route with fewer steps utilizes a perfluoroalkylsulfonyl-substituted vinyl ether as the source of the fluorinated substituents but affords a product with significantly higher equivalent weight.
- Feiring, Andrew E.,Wonchoba, Edward R.
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p. 129 - 135
(2007/10/03)
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- SPONTANEOUS REACTIONS OF POTASSIUM PHENOXIDE WITH DIBROMOPERFLUOROALKANES. FIRST EVIDENCE FOR BROMOPHILIC ATTACK ON C-Br BONDS BY THE PHENOXIDE ION.
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In contrast to earlier reports, It has been found that dibromoperfluoroalkanes actually can react spontaneously with PhOK, yielding fluoroalkyl phenyl ethers as products.Evidence for an anionic chain mechanism involving a bromophilic attack by the phenoxyde ion is presented.
- Xingya, Li,Heqi, Pan,Xikui, Jiang
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p. 4937 - 4940
(2007/10/02)
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- CONDENSATION OF 1,2-DIBROMOTETRAFLUOROETHANE WITH VARIOUS POTASSIUM THIOPHENOXIDES AND PHENOXIDES
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BrCF2CF2Br reacts easily with various potassium thiophenoxides and phenoxides to give respectively 2-bromo tetrafluoroethyl thioethers and ethers.The lipophilicity of C6H5SCF2CF2Br and C6H5OCF2CF2Br is measured and compared with that of the well known C6H5SCF2CF2H and C6H5OCF2CF2H.
- Rico, I.,Wakselman, C.
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p. 759 - 764
(2007/10/02)
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