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2005
Ethers
P 0150
35- 065
Insertion Reactions of Difluorocarbene Generated by Pyrolysis of Hexafluoropropene Oxide to O—H Bond. — In the reaction of hexafluoropropene oxide (I) with
low nucleophilic alcohols or phenol (II), the insertion reaction of difluorocarbene to
OH-bond proceeds predominantly to give the R-O-CHF2-type fluorinated ethers (III),
although the insertion reaction and the nucleophilic attack of alcohol or phenol to (I)
are competitive. The yield and selectivity of the fluorinated ethers are related to the reaction pressure. The yield of (III) at higher pressure increases in the case of (IIb) and
(IIc). — (MIZUKADO*, J.; MATSUKAWA, Y.; QUAN, H.-D.; TAMURA, M.;
SEKIYA, A.; J. Fluorine Chem. 126 (2005) 3, 365-369; Natl. Inst. Adv. Ind. Sci.
Technol., Tsukuba, Ibaraki 305, Japan; Eng.) — H. Hoennerscheid
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