A process for the electrophilic ring fluorination of aromatic compounds which comprises reacting a fluorinating agent from the group consisting of CF.sub.3 OF and CF.sub.2 (OF).sub.2 with an aromatic compound of the formula ##STR1## where X is selected from the group consisting of ##STR2## and ##STR3## and Y is selected from the group consisting of --H, --CF.sub.3, --CN, --NO.sub.2, --Cl, and CH.sub.3.
[EN] ADDITION REACTION TO FLUOROALLYLFLUOROSULFATE<br/>[FR] RÉACTION D'ADDITION À DU FLUOROALLYLFLUOROSULFATE
申请人:SOLVAY SOLEXIS SPA
公开号:WO2009083451A1
公开(公告)日:2009-07-09
The invention pertains to a process for preparing compounds of formula (I-A) or (I-B) here below: by reaction of perfluoroallylfluorosulfate (FAFS) of formula (II): with at least one hypofluorite of formula (II-A) or (II-B): wherein: RF in formulae (I-A) and (II-A) is a monovalent fluorocarbon C1-C20 group, optionally comprising oxygen catenary atoms, optionally comprising functional groups comprising heteroatoms (e.g. -SO2F groups); R'F in formulae (I-B) and (II-B) is a divalent fluorocarbon C-1-C6 group, preferably a group of formula (III): wherein X1 and X2, equal to or different from each other, are independently a fluorine atom or a C1-C3 fluorocarbon group. The FAFS-hypofluohte adducts of formulae (I-A) and (I-B) can be produced with high selectivity so as to access useful intermediates which can further be reacted taking advantage of the un-modified fluorosulfate group chemistry.
Reactionsbetweencarbondioxide and fluorine were examined at temperatures of 303–523 K under various pressure and mixture ratios of both gases. Reactions were carried out similarly under the existence of NaF, CsF and EuF3.
New perfluorovinylethers through the bis(fluoroxy)difluoromethane (BDM) chemistry
作者:Walter Navarrini、Sandra Corti
DOI:10.1016/j.jfluchem.2003.07.011
日期:2004.2
In the present work we give an overview of the CF2(OF)2 radical reactivity and report the synthesis of new perfluorovinylethers. CF2CFOCF2OCF2CF3 and CF2CFOCF2OCF2CF2OCF3 are prepared in a semi-continuous methodology starting from CF2(OF)2. These highly reactive vinylethers are characterized by the OCF2O group directly bonded to the insaturation. For this reason they are excellent candidates for
Synthesis and reaction chemistry of fluoroxydifluoromethyl fluoroformyl peroxide
作者:Qun Huang、Darryl D. DesMarteau
DOI:10.1016/s0022-1139(01)00536-x
日期:2001.12
The reaction of bis(fluoroformyl) peroxide 1 with F2 in the presence of CsHF2 of KHF2 produces FOCF2OOC(O)F 2 in 60% yield. The previously known FOCF2OOCF2OF is also obtained as a byproduct along with small amounts of the new compounds FOCF2OOC(O)OOC(O)F 3 and FOCF2OOC(O)OOCF2OF 4. Hydrolysis of 2 affords either FOCF2OOC(O)OOCF2OF 4 or FOCF2OOH 5 in low yield, depending on the reaction conditions.
在KHF 2的CsHF 2存在下,双(氟甲酰基)过氧化物1与F 2的反应产生FOCF 2 OOC(O)F 2,产率为60%。还与少量新化合物FOCF 2 OOC(O)OOC(O)F 3和FOCF 2 OOC(O)OOCF 2 OF 4一起作为副产物获得了先前已知的FOCF 2 OOCF 2 OF 。2的水解产生FOCF 2 OOC(O)OOCF 2 OF 4或FOCF 2 OOH 5取决于反应条件,收率低。过氧化物的氟化3 - 5提供高收率的相应的氟氧基化合物,并提供结构的进一步证明。