Copper-catalyzed ligand free ring-opening amination of gem-fluorohalocyclopropanes – An efficient route toward 2-fluoroallylamines
作者:Maxim A. Novikov、Yaroslav A. Ibatov、Nikolai V. Volchkov、Maria B. Lipkind、Sergei E. Semenov、Oleg M. Nefedov
DOI:10.1016/j.jfluchem.2017.01.001
日期:2017.2
Ring-opening amination of gem-chlorofluoro- and gem-bromofluorocyclopropanes with secondary alkyl, arylamines or hydroxylamines catalyzed by copper(I) or copper(II) compounds with no additional ligands affords tertiary 2-fluoroallylamines or hydroxylamines in moderate to excellent yields. The reaction pathway involves isomerization of gem-fluorohalocyclopropanes to 2-fluoroallyl halides followed by
Gas-phase pyrolysis of 1-chloro-1-fluoro-2-methylcyclopropanes in the presence of SiO2 or Al2O3 with the formation of 2-chloro- or 2-fluorobuta-1,3-dienes
作者:N. V. Volchkov、M. B. Lipkind、M. A. Novikov、O. M. Nefedov
DOI:10.1007/s11172-014-0730-4
日期:2014.10
Gas-phase pyrolysis of of 1-chloro-1-fluoro-2-methylcyclopropanes in an empty or filled with quartz pieces flow-tube reactor at 430—460 °C gives 2-fluorobuta-1,3-dienes (in 42—75% yields), whereas pyrolysis in the presence of Al2O3 at 150—250 °C gives 2-chlorobuta-1,3-dienes as the major products (in 58—68% yield).
Catalytic Cyclopropanation of Fluorine-Containing Alkenes and Dienes with Diazomethane and Methyl Diazoacetate
作者:Ekaterina V. Guseva、Nikolay V. Volchkov、Yury V. Tomilov、Oleg M. Nefedov
DOI:10.1002/ejoc.200400109
日期:2004.7
bonds in fluorine-containing unsaturated compounds toward cyclopropanation with diazomethane and methyl diazoacetate with catalysis by copper, rhodium and palladium compounds were studied. In general, the presence of fluorine atoms attached to the double bond or arranged at neighbouring positions exerted a suppressive effect on the cyclopropanation of this bond. As would be expected, diazomethane in the
Fluororganische Synthesen V Darstellung und Abwandlung von Chlorfluorcyclopropanen - Ein gezielter Zugang zu Fluorallylalkoholen
作者:Manfred Schlosser、Le Van Chau
DOI:10.1002/hlca.19750580844
日期:1975.11.5
Fluoroorganic Syntheses V. Preparation and Transformation of Chlorofluorocyclopropanes. – A Selective Approach to Fluoroallylic Alcohols
氟有机合成V.氯氟环丙烷的制备和转化。-氟代烯丙醇的选择性方法
(2-Fluoroallyl)boronates: new reagents for diastereoselective 2-fluoroallylboration of aldehydes
作者:Maxim A. Novikov、Oleg M. Nefedov
DOI:10.1039/c8ob01103f
日期:——
[(2-MeAll)Pd(IPr)Cl] was developed to afford (2-fluoroallyl)pinacolboronates with high Z-selectivity. The products proved to be useful for anti-selective 2-fluoroallylboration of aromatic and aliphatic aldehydes.