Efficient Synthesis of Salts of the Tetrakis(perfluoroorgano)borate Anion, [B(CFCF<sub>2</sub>)<sub>4</sub>]<sup>-</sup>
作者:Nicolay Yu. Adonin、Vadim V. Bardin、Ulrich Flörke、Hermann-Josef Frohn
DOI:10.1021/om030610i
日期:2004.1.1
The synthesis and the NMR spectra of the tetrakis(trifluorovinyl)borate salts M[B(CFCF2)4] (M = Li, K, Cs, [NR1R23]) as well as the X-ray crystal structure of the tetramethylammonium salt are reported. These salts were prepared by the reaction of boron trichloride with bis(trifluorovinyl)di-n-butyltin in the presence of tri- and tetraalkylammonium or alkali-metal chlorides in dichloromethane.
Prenyltransferase. New evidence for an ionization-condensation-elimination mechanism with 2-fluorogeranyl pyrophosphate
作者:C. Dale Poulter、J. Craig Argyle、Eugene A. Mash
DOI:10.1021/ja00445a056
日期:1977.2
Es wird die Bildung von Fluorfarnesylpyrophosphat aus Fluorgeranylpyrophosphat (I) und [′4C]-Isopentenylpyrophosphat in Gegenwart von Farnesylpyrophosphat-Synthetase aus Schweineleber untersucht.
Es wird die Bildung von Fluorfarnesylpyrophosphat aus Fluorgeranylpyrophosphat (I) 和 ['4C]-Isopentenylpyrophosphat in Gegenwart von Farnesylpyrophosphat-Synthetase aus Schweineleber untersucht。
Fluorovinylzinc Reagents: Access to Fluorovinyl Ketones, Esters, and Heterocycles
作者:J. P. Gillet、R. Sauvêtre、J. F. Normant
DOI:10.1055/s-1986-31695
日期:——
Several fluorovinylzinc reagents have been prepared. Palladium-catalyzed cross coupling reactions give stereoselectively flourinated compounds.
An unusually rapid Claisen rearrangement involving ring expansion
作者:Gianluca Dimartino、Jonathan M. Percy
DOI:10.1039/b007549n
日期:——
A Claisen rearrangement of a partially-fluorinated system
involving ring expansion occurred at an unusually low temperature, 100
°C lower than a comparable system from the literature.
Several fluoroenynes have been prepared by palladium-catalyzed cross-coupling reactions. Cycloaddition reactions of these enynes give substituted cyclobutanes, whereas treatment with sulfuric acid leads to α-fluoro-α-allenic acid fluorides, lactones, α-fluoro-β-diketones or cyclic α-fluoroenones, according to the nature of the starting enyne. The cyclisation process is discussed.