1-[Hydroxy(sulfonyloxy)iodo]-2,2,2-trifluoroethanes, CF3CH2I(OH)OSO2R: Stable, fluoroalkyl analogs of Koser's reagent
作者:Viktor V. Zhdankin、Chris J. Kuehl、Angela J. Simonsen
DOI:10.1016/0040-4039(95)00275-h
日期:1995.3
1-[Hydroxy(sulfonyloxy)iodo]-2,2,2-trifluoroethanes [CF3CH2I(OH)OSO2R; R = CH3, CF3, p-CH3C6H4] can be prepared in two steps from trifluoroethyliodide by oxidation with pertrifluoroacetic acid and subsequent reaction with TsOH, MsOH, or Me3SiOTf. Reaction of the tosylate derivative 3 with silyl enol ethers affords α-tosyloxyketones, while triflate 5 smoothly reacts with trimethylsilylbenzene to give
Zhdankin Viktor V., Kuehl Chris J., Simonsen Angela J., Tetrahedron Lett., 36 (1995) N 13, S 2203-2206
作者:Zhdankin Viktor V., Kuehl Chris J., Simonsen Angela J.
DOI:——
日期:——
1-[Hydroxy(sulfonyloxy)iodo]-1<i>H</i>,1<i>H</i>-perfluoroalkanes: Stable, Fluoroalkyl Analogs of Koser's Reagent
作者:Viktor V. Zhdankin、Chris J. Kuehl、Angela J. Simonsen
DOI:10.1021/jo961336n
日期:1996.11.15
respective alpha-(tosyloxy) ketones. A similar reaction of cyclohexene furnishes cis-1,2-bis(tosyloxy)cyclohexane as the major product. Triflates 3c,f react with (trimethylsilyl)arenes under mild conditions to afford the respective (fluoroalkyl) (aryl)iodonium triflates 7, while the analogous reaction with alkynyltrimethylsilanes leads to novel (fluoroalkyl)(alkynyl)iodonium salts 8.
1- [羟基(磺酰氧基)碘] -1H,1H-全氟烷烃3 [R(f)CH(2)I(OH)OSO(2)R; R = CH(3),CF(3),p-CH(3)C(6)H(4),R(f)= CF(3),C(2)F(5)]通过用过氧三氟乙酸氧化,然后与TsOH,MsOH或Me(3)SiOTf反应,从适当的碘代氟代烷烃中分离两个步骤。甲苯磺酸酯衍生物3a在温和条件下与甲硅烷基烯醇醚反应,得到相应的α-(甲苯磺酰氧基)酮。环己烯的类似反应提供了顺式1,2-双(甲苯磺酰氧基)环己烷为主要产物。三氟甲磺酸3c,f在温和的条件下与(三甲基甲硅烷基)芳烃反应,得到相应的(氟烷基)(芳基)碘鎓三氟甲磺酸盐7,而与炔基三甲基硅烷的类似反应产生新的(氟烷基)(炔基)碘鎓盐8。