Chemistry of novel compounds with a multifunctional carbon structure. 5. Molecular design of versatile building blocks for aliphatic monofluoro molecules by manipulation of multifunctional carbon structure
Chemistry of novel compounds with a multifunctional carbon structure. 5. Molecular design of versatile building blocks for aliphatic monofluoro molecules by manipulation of multifunctional carbon structure
The first versatile and practical building blocks equivalent to the synthon of monofluoromethylene dicarbanion
作者:Yoshio Takeuchi、Kazuhiro Nagata、Toru Koizumi
DOI:10.1021/jo00231a053
日期:1987.10
Novel and practical preparation of α-fluoro-functionalized esters from fluoroiodoacetates
作者:Chengxin Zhi、Qing-Yun Chen
DOI:10.1039/p19960001741
日期:——
The addition reaction of fluoroiodoacetates 2 to various electron-rich alkenes 3 initiated by iron powder in dry THF at 70-80 degrees C gave 1 : 1 adducts 4 in good yields. A variety of functionalities in the alkenes such as trimethylsilyl, alkoxy, acetoxy, hydroxy and ester could be tolerated under the reaction conditions. Reduction of the adducts 4 with Zn-AcOH in ethanol or Zn-NiCl2 . 6H(2)O in moist THF was readily accomplished, and the overall procedure was amenable to a convenient one-flask procedure, Treatment of fluoroiodoacetates 2 with electron-deficient alkenes 7 in the presence of an Fe-CrCl3 . 6H(2)O-bpy bimetal redox system in ethanol at 70-80 degrees C resulted in the formation of iodine-free 1 : 1 adducts 8 in moderate to good yields. It is proposed that the addition reactions of fluoroiodoacetates 2 to electron-rich and electron-deficient alkenes proceeded through a single-electron-transfer mechanism.
TAKEUCHI, YOSHIO;NAGATA, KAZUHIRO;KOIZUMI, TORU, J. ORG. CHEM., 54,(1989) N3, C. 5453-5459
TAKEUCHI, Y.;NAGATA, K.;KOIZUMI, T., J. ORG. CHEM., 52,(1987) N 22, 5061-5063
作者:TAKEUCHI, Y.、NAGATA, K.、KOIZUMI, T.
DOI:——
日期:——
Chemistry of novel compounds with a multifunctional carbon structure. 5. Molecular design of versatile building blocks for aliphatic monofluoro molecules by manipulation of multifunctional carbon structure