Process for the preparation of .alpha.-fluoro-.beta.-dicarbonyl

Details Process for the preparation of .alpha.-fluoro-.beta.-dicarbonyl Process for the preparation of .alpha.-fluoro-.beta.-dicarbonyl

1993-11-03

1995-02-21

Shippen, Michael L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560 51, 560 82, 560172, 560174, 560192, 564155, 564160, 564169, 564199, 564200, 568316, 568394, 568393, C07C22900

Patent

active

053918118

ABSTRACT:
.alpha.-fluoro-.beta.-dicarbonyl compounds are prepared by reacting a halogenated dicarbonyl compound at temperatures of 20.degree. to 100.degree. C. with an addition product of hydrogen fluoride and a trialkylamine. This process is easy to carry out in technical terms and can also be carried out on a large scale.

REFERENCES:
patent: 3141040 (1964-07-01), Inman
patent: 3227736 (1966-01-01), Tschesche
patent: 3480667 (1969-11-01), Siegart
patent: 3976691 (1976-08-01), Middleton
patent: 5210272 (1993-05-01), Palmer
patent: 5254732 (1993-10-01), Differding
J. Org. Chem., 1989, vol. 54, pp. 5618-5620; "Fluoromalonaldehyde Bis (dialkyl acetals): Synthesis by . . . "; Molines et al.
J. Org. Chem., 1991, vol. 56, pp. 273-277; "Acylation of Fluorocarbethoxy Substituted Ylids: A Simple and . . . "; Thenappan et al.
J. Chem. Soc., Chem. Commun., 1991, pp. 179-181; "N-Fluoro Perfluoroalkylsulphonimides: Efficient Reagents for . . . "; Xu et al.

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