Palladium catalysts are found to selectively hydrogenate fluoroolefins without hydrogenolyticcleavage of the carbon-fluorine bond Since a large number of methods are available for the preparation of unsaturated organofluoro compounds this constitutes a general synthetic route to sp3-fluorinated molecules.
Simple synthesis of optically active 2-fluoropropanoic acid and analogs of high enantiomeric purity
作者:Elke Fritz-Langhals、Gabi Schu¨tz
DOI:10.1016/s0040-4039(00)60570-1
日期:1993.1
A very simple synthesis of opticallyactive 2-fluoropropanoic acid 1 (R=CH3, R′=H) and analogs of high enantiomeric purity was developed using the sulfonates 2 of the corresponding opticallyactive 2-hydroxycar☐ylic esters and potassium fluoride in formamide. Thus methyl (R)-2-fluoropropanoate (1, R=CH3, R′=CH3) was prepared in an optical purity of 96% from the mesylate of methyl (S)-lactate (ee 97