Journal
JOURNAL OF FLUORINE CHEMISTRY
Volume 111, Issue 2, Pages 227-232Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0022-1139(01)00459-6
Keywords
5,5,5-trifluoro-3-penten-2-one; 4,4,4-trifluorocrotonaldehyde; 5,5,5-trifluoro-3-penten-2-ol; 4,4,4-trifluorocrotonic acid; 1-bromo-1-chloro-2,2,2-trifluoroethane; sodium dithionite; enol ethers
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A convenient and simple method has been found for the preparation of 5,5,5-trifluoro-3-penten-2-one (3) and 4,4,4-trifluorocrotonaldehyde (9) by a sodium dithionite initiated addition of 1-bromo-1-chloro-2,2,2-trifluoroethane to 2-methoxypropene and ethyl vinyl ether, respectively. Reduction of 3 with aluminium isopropoxide afforded allyl alcohol, 5,5,5-trifluoro-3-penten-2-ol (5) and oxidation of 9 gave 4,4,4-trifluorocrotonic acid (11). (C) 2001 Elsevier Science B.V. All rights reserved.
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