359-29-5Relevant articles and documents
Photo-cycloaddition of Indene to Chlorofluoroethylenes and Some Reactions Concerning the Adducts
Kimoto, Hiroshi,Takahashi, Kensuke,Muramatsu, Hiroshige
, p. 764 - 769 (1980)
Benzophenone photo-sensitized addition of indene to chlorofluoroethylenes afforded 6,6,7,7-tetrahalogeno-2,3-benzobicyclohept-2-enes as corresponding cycloadducts.The structure of the cycloadducts obtained from unsymmetrical chlorofluoroethylenes shows that the addition reaction proceeds with good regioselectivity.Some reactions such as oxidation, reduction, dechlorination, and halogenation of the cycloadducts were also examined.
Reactions of perfluorinated alkenyl-, alkynyl-, alkyltrifluoroborates, and selected hydrocarbon analogues with the halogenating agents Hal2 (Hal = F, Cl, Br), "brF" (BrF3-Br2 1:1), and ICl
Bardin, Vadim V.,Adonin, Nicolay Yu.,Frohn, Hermann-Josef
experimental part, p. 565 - 579 (2012/05/20)
Reactions of [Bu4N][RBF3] [R = CnF 2n+1CF=CF (cis, trans), CF2=CF, CF2=C(CF 3), trans-C4H9CF=CF, trans-C6H 5CF=CF, C4H9CH=CH (cis, trans), CF 3C≡C, and C4H9C≡C] with chlorine, bromine, BrF3 + Br2 (as equivalent of "BrF"), and ICl in solution (CH2Cl2, CHCl3, CF 3CH2CF2CH3) led to 1, 2-addition of halogen and/or replacement of boron by halogen (halodeboration). The reaction of [Bu4N][CF3C≡CBF3] with less than equimolar amounts of diluted fluorine (5 %) in 1, 1, 1, 3, 3-pentafluorobutane (PFB) showed only [Bu4N][CF3CF2CF 2BF3] as fluorine addition product besides extensive fluorodeboration. Suspensions of the insoluble K[CF2=CFBF 3] salt reacted with Cl2 and Br2 in CH 2Cl2 giving preferentially products of halogen addition across the C=C bond. In reactions with ICl iododeboration with formation of CF2=CFI occurred besides 1, 2-addition with formation of [CF 2I-CFClBF3]-. The halodeboration reaction of[Bu4N][trans-C4H9CF=CFBF3] with Br2, "BrF", and ICl, of K[trans-C6H 5CF=CFBF3] with Br2, and of [Bu 4N][trans-C4F9CF=CFBF3] with ICl proceeded stereospecifically. Copyright
Enhanced Lewis acidity by aliovalent cation doping in metal fluorides
Kemnitz, Erhard,Zhu,Adamczyk
, p. 163 - 170 (2007/10/03)
A model regarding the generation of acidity in binary metal fluorides has been proposed and its validity has been examined for several binary fluoride systems with the general compositions MF3/M′F3 and MF2/M′F3. In accordance with this hypothesis, the binary systems (CrF3/AlF3, CrF3/FeF3 and AlF3/VF3) do not show acidities larger than the sum of the acidities of the component fluorides. The hypothesis predicts the generation of Lewis acidity when MF2 is the major component (host) and generation of Bronsted acidity when MF3 acts as the host for the MF2/M′F3. The experimental results (surface acidity and catalytic activity) confirmed the predictions made from this hypothesis for binary combinations MgF2/M′F3 (M′ = Cr, Al, Fe, V). The application of this model is discussed in terms of other parameters: ionic radii and the fluoride affinity of the metal fluorides involved.