Generation and Use of an Equivalent of Difluoroacetamide or Difluoroacetate Anions Part 3 of the Series: Reactivity of Stable Trifluoroacetaldehyde hemiaminals. Part 2: T. Billard, B. R Langlois, J. Org. Chem. 2002, 67, 997–1000.
作者:Gaëlle Blond、Thierry Billard、Bernard R. Langlois
Ethers of trifluoroacetaldehyde hemiaminals can undergo dehydrofluorination under basic conditions to provide ethers of difluoroketene hemiaminals. The latter behave as equivalents of difluoroacetamide or difluoroacetate anions towards various electrophiles, yielding a range of difluoromethylcarbonyl products.
Electroreductive coupling of halofluoro compounds with aldehydes
作者:Tatsuya Shono、Naoki Kise、Hideaki Oka
DOI:10.1016/0040-4039(91)80223-s
日期:1991.11
Electroreductive intermolecular coupling of halofluoro compounds such as 1,1,1-trichloro-2,2,2-trifluoroethane, methyl chlorodifluoroacetate, and perfluoroalkyl halides with aldehydes took place effectively in the presence of chlorotrimethylsilane and one of the coupling products, 2,2-dichloro-3,3,3-trifluoro-1-phenyl-1-propanol, was selectively convertible to a variety of compounds with using the electroreduction as a key reaction.
Aldol reaction of iododifluoroacetate-Zn and 2,2-difluoroketene silyl acetal
作者:Osamu Kitagawa、Takeo Taguchi、Yoshiro Kobayashi
DOI:10.1016/s0040-4039(00)82048-1
日期:1988.1
KITAGAWA, OSAMU;TAGUCHI, TAKEO;KOBAYASHI, YOSHIRO, TETRAHERON LETT., 29,(1988) N 15, 1803-1806
2,2-difluoro-3-hydroxyesters are readily obtained from methyl chlorodifluoroacetate and carbonyl compounds by electrolysis in a one-compartment cell with use of a sacrificial zinc anode and a nickel-complex catalyst.