| 摘要 |
<p>A process for epoxidation of a fluoro-olefin is disclosed. The process comprises epoxidizing a fluoro-olefin represented by the general formula (I):
<Chemistry id="chema01" num="0001"><Image id="ia01" he="18" wi="82" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein X<Sup>1</Sup>, X<Sup>2</Sup> and X<Sup>3</Sup> each represent a substituent selected from (a) -F, (b) a perfluoroalkyl group having 2 to 20 carbon atoms and (c) -CF<Sub>2</Sub>Y<Sup>1</Sup>, Y<Sup>1</Sup> may be the same or different and represents a substituent selected from (d) a halogen atom selected from F, Cl, Br and I, (e) -OZ<Sup>1</Sup> and (f) -Z<Sup>1</Sup>, wherein Z<Sup>1</Sup> may be the same or different and represents a substituted or unsubstituted hydrocarbon group having not more than 20 carbon atoms, and X<Sup>1</Sup>, X<Sup>2</Sup>, X<Sup>3</Sup> and Y<Sup>1</Sup> may be combined with one another to form a cyclic compound, provided that all of X<Sup>1</Sup>, X<Sup>2</Sup>, X<Sup>3</Sup> and Y<Sup>1</Sup> do not represent - F; using a hypochlorite dissolved or suspended in an aqueous phase as an oxidizing agent in the presence or absence of an inorganic base. The reaction is performed in a two phase system (aqueous and organic phases) in the presence of at least one phase transfer catalyst selected from (i) quaternary ammonium salts, (ii) quaternary phosphonium salts, (iii) quaternary arsonium salts, (iv) sulfonium salts and (v) lipophilic complexing agents for cations contained in the hypochlorite.</p> |
