Perfluoroalkyl hypobromites: synthesis and reactivity with some fluoroalkenes
作者:John D.O. Anderson、Darryl D. DesMarteau
DOI:10.1016/0022-1139(96)03400-8
日期:1996.4
prepared by the reaction of bromine(I) fluorosulfate with perfluorinated tertiary alkoxides of general formula RfC (CF3)2ONa where RfCF3 or CF3CF2. These hypobromites are of lower thermal stability but they behave similarly to analogous hypochlorites and decompose rapidly above −20 °C to give CF3C(O)CF3 and either CF3Br or CF3CF2Br. New polyfluoroethers generated from the reaction of perfluoroalkyl
Synthesis of functionalized polyfluoroalkyl hypochlorites and fluoroxy compounds and their reactions with some fluoroalkenes
作者:Bruce B. Randolph、Darryl D. DesMarteau
DOI:10.1016/s0022-1139(00)80070-6
日期:1993.9
Several new polyfluoroalkyl hypochlorites and fluoroxy compounds containing Cl, H andBr in the alkyl group have been prepared and characterized by 19F NMR, 1H NMR andIR spectroscopies and by their reactions with fluoroalkenes to produce new polyfluoroethers.The novel compounds are prepared by the CsF-catalyzed addition of F2 or ClF to theCO bond in CF3C(O)CF2Cl, ClCF2C(O)CF2Cl, and their derivatives
A novel synthesis of per(poly)fluoroalkyl aldehydes
作者:Chang-Ming Hu、Xiao-Qing Tang
DOI:10.1016/s0022-1139(00)80105-0
日期:1993.4
A novel synthesis of per(poly)fluoroalkyl aldehydes in high yield by the reaction ofper(poly)fluoroalkyliodides or bromides with dimethylformamide initiated by aPbBr2(catalyst)/Al bimetal redox system is described.
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
作者:Vadim V. Bardin、Nicolay Yu. Adonin、Hermann-Josef Frohn
DOI:10.1002/zaac.201100276
日期:2012.3
fluorine (5 %) in 1, 1, 1, 3, 3-pentafluorobutane (PFB) showed only [Bu4N][CF3CF2CF2BF3] as fluorine addition product besides extensive fluorodeboration. Suspensions of the insoluble K[CF2=CFBF3] salt reacted with Cl2 and Br2 in CH2Cl2 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
Regioselective Synthesis of Emission Color‐Tunable Pyrazolo[1,5‐a]pyrimidines with β,β‐Difluoro Peroxides as 1,3‐Bis‐Electrophiles
作者:Yangyang Ma、Yuanjin Chen、Leiyang Lv、Zhiping Li
DOI:10.1002/adsc.202100298
日期:2021.7
The synthesis and photophysical properties of fluorescent pyrazolo[1,5-a]pyrimidines (PPs) are explored. An array of 5,7-disubstituted fluorescent PPs are prepared selectively by using β,β-difluoro peroxides as the 1,3-bis-electrophiles. The synthesized PPs display a fairly significant stokes shift (up to 211 nm) and a large window of tunable emission wavelength that covers most of the visible spectrum