Chemistry of polyfluorocarbanions 1. Nucleophilic iodofluorination of perfluoroalkyl vinyl ethers
作者:T. I. Nazarenko、L. E. Deev、V. G. Ponomarev、N. I. Novosel'tseva、N. B. Pospelova、K. I. Pashkevich
DOI:10.1007/bf00958000
日期:1991.3
Nucleophilic iodofluorination of perfluorovinyl methyl (I) and perfluorovinyl propyl (II) ethers by iodine chloride in nitrobenzene or sulfolan afforded 1-iodoperfluoro-1-methoxyethane (III) and 1-iodoperfluoro-1-propoxyethane in yields of 65 and 77%, respectively. In addition to compound (III), the reaction of perfluorovinyl methyl ether afforded two side products: 1-iodo-2-chloroperfluoro-1-methoxyethane and 2-iodo-1-chloroperfluoro-1-methoxyethane. The latter products are formed via a radical reaction, which takes place under drastic conditions. On the basis of quantum chemical calculations of (I), (II), and the two anions formed from (I), CF3OCFCF3 (VI) and CF3OCF2CF2, (VII), it is proposed that nucleophilic iodofluorination of perfluoroalkyl vinyl ethers involves the formation of thermodynamically more stable anions. The higher reactivity of (I) compared with (II) is in accord with the energy of the lowest unoccupied molecular orbitals and the charge density on the CF2 carbon atoms. F-19 NMR spectra of the synthesized products are shown.
NAZARENKO, T. I.;DEEV, L. E.;PONOMAREV, V. G.;NOVOSELTSEVA, N. I.;POSPELO+, IZV. AN CCCP. CEP. XIM.,(1991) N, S. 669-672
作者:NAZARENKO, T. I.、DEEV, L. E.、PONOMAREV, V. G.、NOVOSELTSEVA, N. I.、POSPELO+
DOI:——
日期:——
HUANG WEI-YUAN; WANG WEI, ACTA CHIM. SIN., 44,(1986) N 9, 940-945
作者:HUANG WEI-YUAN、 WANG WEI
DOI:——
日期:——
Thermolysis and UV-photolysis of perfluorinated iodo-alkanes and iodo-oxaalkanes: there is a preferred reaction channel
作者:Anton Probst、Konrad Von Werner
DOI:10.1016/s0022-1139(00)80460-1
日期:1990.4
Synthesis of new nitrogen-containing perfluoroalkyl iodides
perfluoropiperidino- and perfluoropropoxy-subs perfluoroalkyl iodides were synthesized directly by the reaction of the corresponding perfluoroacylfluorides with lithium iodide in high yield. Under controlled reaction conditions, it was possible to synthesize either iodo-perfluoroacyl fluorides or perfluoroalkylidene diiodides by the reaction of perfluoro(alkanedioyl) difluorides with lithium iodide. Perfluoro(