Addition of phenols to perfluorovinyl ethers. Protonation and halogenation of carbanionic intermediates
摘要:
Fluorinated ethers ArOCF2CFHORf are obtained in good yield by base-catalyzed addition of phenols to perfluoroalkyl vinyl ethers, CF2=CFORf (Rf = C3F7, C3F7OCF(CF3)CF2, CH3O2CCF2CF2OCF(CF3)CF2). Reaction of sodium phenoxides with fluorinated vinyl ethers and hexachloroethane affords chlorinated ethers ArOCF2CFClORf. Treatment of BrCF2CFBrOC3F, with sodium phenoxide in the presence of CF2=CFOC3F7 gives PhOCF2CFBrOC3F7 in high yield at room temperature, probably by an anionic chain mechanism. Sodium phenoxide reacts cleanly with CF2=CFOC3F7 in the absence of an electrophile to give a 1:1 cis-trans mixture of olefins PhOCF=CFOC3F7. NMR chemical shifts of the OCF2CFHORf group proton shows an unusually large solvent dependence.
Fluorous Dendrimers and Methods for Production Thereof
申请人:Percec Virgil
公开号:US20120277460A1
公开(公告)日:2012-11-01
The present invention concerns the design of an environmentally friendly and efficient fluorous phase based on dendritic architectures containing short semifluorinated groups on their periphery.
本发明涉及基于树状结构的含有短半氟化基团的环境友好高效的氟相设计。
KIM, A. CH. -V.;GLAZKOV, A. A.;IGNATENKO, A. V.;KRUKOVSKIJ, C, P.;PONOMAR+, IZV. AN CCCP. CEP. XIM., 1984, N 10, 2319-2321
作者:KIM, A. CH. -V.、GLAZKOV, A. A.、IGNATENKO, A. V.、KRUKOVSKIJ, C, P.、PONOMAR+
DOI:——
日期:——
Addition of phenols to perfluorovinyl ethers. Protonation and halogenation of carbanionic intermediates
作者:Andrew E. Feiring、Edward R. Wonchoba
DOI:10.1021/jo00052a008
日期:1992.12
Fluorinated ethers ArOCF2CFHORf are obtained in good yield by base-catalyzed addition of phenols to perfluoroalkyl vinyl ethers, CF2=CFORf (Rf = C3F7, C3F7OCF(CF3)CF2, CH3O2CCF2CF2OCF(CF3)CF2). Reaction of sodium phenoxides with fluorinated vinyl ethers and hexachloroethane affords chlorinated ethers ArOCF2CFClORf. Treatment of BrCF2CFBrOC3F, with sodium phenoxide in the presence of CF2=CFOC3F7 gives PhOCF2CFBrOC3F7 in high yield at room temperature, probably by an anionic chain mechanism. Sodium phenoxide reacts cleanly with CF2=CFOC3F7 in the absence of an electrophile to give a 1:1 cis-trans mixture of olefins PhOCF=CFOC3F7. NMR chemical shifts of the OCF2CFHORf group proton shows an unusually large solvent dependence.
Preparation and properties of some derivatives of perfluoropropyl vinyl ether
作者:A. Ch. -V. Kim、A. A. Glazkov、A. V. Ignatenko、S. P. Krukovskii、V. A. Ponomarenko