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    • 9. 发明授权
    • Fluoroepoxides and a process for production thereof
    • 氟环氧化物及其制备方法
    • US4965379A
    • 1990-10-23
    • US69745
    • 1987-07-06
    • Masanori IkedaMorikazu MiuraAtsushi Aoshima
    • Masanori IkedaMorikazu MiuraAtsushi Aoshima
    • C07C51/41C07C51/58C07C51/62C07D303/08C07D303/48
    • C07D301/14C07C51/41C07C51/58C07C51/62C07D303/48
    • A process for epoxidation of a fluoro-olefin is disclosed. The process comprises epoxidizing a fluoro-olefin represented by the general formula (I): ##STR1## wherein X.sup.1, X.sup.2 and X.sup.3 each represents a substituent selected from (a) --F, (b) a perfluoroalkyl group having 2 to 20 carbon atoms and (c) --CF.sub.2 Y.sup.1, Y.sup.1 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 and (f) --Z.sup.1, wherein Z.sup.1 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, X.sup.2, X.sup.3 and Y.sup.1 may be combined with one another to form a cyclic compound, provided that all of X.sup.1, X.sup.2, X.sup.3 and Y.sup.1 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.
    • 公开了氟代烯烃的环氧化方法。 该方法包括环氧化由通式(I)表示的氟代烯烃:其中X 1,X 2和X 3各自表示选自(a)-F,(b)具有2〜 20个碳原子和(c)-CF 2 Y 1,Y 1可以相同或不同,表示选自(d)选自F,Cl,Br和I的卤素原子,(e)-OZ1和(f)-Z1 其中Z1可以相同或不同,表示具有不超过20个碳原子的取代或未取代的烃基,X1,X2,X3和Y1可以相互结合形成环状化合物,条件是全部X1 ,X2,X3和Y1不表示-F; 在存在或不存在无机碱的情况下,使用溶解或悬浮在水相中的次氯酸盐作为氧化剂。 在至少一种相转移催化剂的存在下,在两相体系(水相和有机相)中进行反应,所述相转移催化剂选自(i)季铵盐,(ii)季鏻盐,(iii)季ium盐,(iv )锍盐和(v)用于次氯酸盐中所含阳离子的亲脂性络合剂。