- NUCLEOPHILIC REACTIONS OF FLUOROOLEFINS. II. REGIOSELECTIVITY AND ELIMINATION-ADDITION COMPETITION IN THE REACTION OF 1-PHENYLPENTAFLUOROPROPENES WITH SODIUM ETHOXIDE
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1-Phenylpentafluoropropene and its para-substituted analogs 1 are susceptible to nucleophilic attack at both vinylic carbon atoms C-1 and C-2.They react with ethanolic sodium ethoxide to give predominantly substitution products, 1-ethoxy-1-phenyltetrafluo
- Dmowski, Wojciech
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- Reductive modification of difluoromethylene moiety in pentafluoropropionyl group
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The reductive Mg-promoted defluorinative-silylation of 2,2,3,3,3-pentafluoropropiophenone readily produces the α-trifluoromethyl enol silyl ether, which then react with electrophiles to give a variety of 2-substituted-3,3,3-trifluoropropiophenones in excellent yields. The same protocol is applicable for the preparation of enol silyl ether of 3,3,3-trifluoropropiophenone. Fluoride ion catalyzed 1,2-desilylative-defluorination of 2,3,3,3-tetrafluoro-2-trimethylsilyloxypropiophenone provided 3,3,3-trifluoro-1-phenyl-1,2-propanedione in a good yield.
- Nakamura, Yutaka,Ozeki, Yuu,Uneyama, Kenji
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p. 274 - 279
(2008/12/20)
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- Dephosphorylation of 1-Substituted F-1-Alkenyl Phosphates with Diisobutylaluminium Hydride. A New Highly Efficient Method for Generating F-Alkyl Ketone Aluminium(III) Enolates
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1-Substituted F-1-alkenyl phosphates, prepared easily from F-alkyl ketones, were treated with diisobutylaluminium hydride in tetrahydrofuran at 0 deg C for 5 min or at room temperature for 30 min to generate quantitetively the corresponding ketone alumini
- Ishihara, Takashi,Yamaguchi, Koichi,Kuroboshi, Manabu
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p. 1191 - 1194
(2007/10/02)
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