is treated with zirconocene equivalent ‘Cp2Zr’ to generate thermostable 1-fluorovinylzirconocene via a CFbondcleavage. This 1-fluorovinylzirconocene can be used for CCbond formation through the cross-coupling with aryl iodides in the presence of palladium catalyst and zinc iodide, leading to (Z)-1-aryl-2-(p-dimethylaminophenoxy)-1-fluoroolefins in good yields.
Preparation of a Stable Trifluoroborate Salt for the Synthesis of 1-Aryl-2,2-difluoro-enolethers and/or 2,2-Difluoro-1-aryl-ketones via Palladium-Mediated Cross-Coupling
作者:Jason D. Katz、Blair T. Lapointe、Christopher J. Dinsmore
DOI:10.1021/jo901789b
日期:2009.11.20
A bench-stable potassium trifluoroborate enol ether reagent has been prepared. This reagent is suitable for the incorporation of 2,2-difluoroenolethers into aryl and heteroaryl systems via palladium-mediated cross-coupling with suitable halide coupling partners.
Generating Diversity in Difluoromethyl Ketone Derivatives
作者:Gareth A. DeBoos、Jeremy J. Fullbrook、Jonathan M. Percy
DOI:10.1021/ol010135p
日期:2001.9.1
[GRAPHICS]Two consecutive palladium-catalyzed coupling reactions from a readily available difluoroenol stannane set the stage for the synthesis of a range of difluoro- and halodifluoromethyl ketones upon a variable aryl template.
Diels-Alder reactions of oxygen-substituted difluoroalkenes
作者:Jonathan M. Percy、Michael.H. Rock
DOI:10.1016/s0040-4039(00)60036-9
日期:1992.10
We describe thermal [4+2] cycloaddition reactions of a difluoroenol acetal and carbamate with cyclopentadiene, which proceed in good yields.
New fluorine-containing building blocks from trifluoroethanol. 1
作者:Sunita T. Patel、Jonathan M. Percy、Robin D. Wilkes
DOI:10.1016/0040-4020(95)00525-d
日期:1995.8
A new fluorine containing acyl anionequivalent 1,1-difluoro-2-lithio-2-[(methoxyethoxy)methoxy]ethene 12 has been prepared from trifluoroethanol and trapped with a number of electrophiles in good yield. Effective electrophiles included Group(IV) halides and carbonyl compounds. Attempts to alkylate using iodomethane were unsuccessful.