Coupling of 2-Substituted 1-Fluorovinylstannanes with Organic Halides Catalyzed by Palladium(0)/Copper(I) Iodide. A Mild and Stereospecific Method to Monofluoroolefins
作者:Chen、Keith Wilcoxen、Yun-Fei Zhu、Kyung-il Kim、James R. McCarthy
DOI:10.1021/jo982200n
日期:1999.5.1
The palladium-catalyzed cross-coupling reactions of (E)- or (Z)-1-fluorovinylstannanes with aryl iodides and vinyl iodides provide good yields of stereoisomerically pure substituted fluoroolefins with retention of the double bond geometry. The reaction takes place with copper(I) iodide present as a cocatalyst at ambient temperature or in refluxing tetrahydrofuran and is tolerant of a variety of functional groups. Highly functionalized and stereoisomerically pure monofluorovinyl ketones also were obtained under mild conditions by the coupling of 1-fluorovinylstannanes with acid chlorides. (1)H-(19)F} NOE NMR experiments unequivocally established the stereochemistry of the coupling products E-14 and Z-14.
Palladium/Copper (I) halide-cocatalyzed stereospecific coupling of 1-fluorovinylstannanes with aryl iodides and acyl chlorides
作者:Chen Chen、Keith Wilcoxen、Kyung-il Kim、James R. McCarthy
DOI:10.1016/s0040-4039(97)10003-x
日期:1997.11
Cross-coupling of 1-fluorovinylstannanes with aryl iodides or acyl chlorides, cocatalyzed by palladium and copper (I) iodide proceeded under mild conditions to give substituted fluoro olefins and alpha-fluoro-alpha,beta-unsaturated ketones, respectively, in good yields with retention of configuration. (C) 1997 Elsevier Science Ltd.