| 摘要 |
1,173,494. define oxides. INSTITUT FRANCAIS DU PETROLE, DES CARBURANTS ET LUBRIFIANTS. 8 Feb., 1967 [12 Feb., 1966], No. 5967/67. Heading C2C. [Also in Division C3] An olefinic compound having 3-25 carbon atoms in the molecule is epoxidized by reacting it in a substantially anhydrous liquid phase with an organic hydroperoxide in the presence of a salt of molybdic acid, tungstic acid or vanadic acid with an organic nitrogenous base as catalyst. Suitable hydroperoxides are those of aliphatic, cycloaliphatic and alkyl aromatic hydrocarbons, polyolefinic hydroperoxides, alcohol hydroperoxides and acyl hydroperoxides. The hydroperoxide may be used in the form of its crude reaction product, e.g. from the oxidation of a hydrocarbon or an alcohol, e.g. an alkyl benzene or an α-hydroxyalkyl benzene. The olefinic starting materials may be aliphatic olefins, cycloolefins, alkyl and alkenyl cycloolefins, alkenylaryl hydrocarbons, polyolefinic hydrocarbons and olefinic alcohols. Examples are given of the preparation of 1,2-epoxypropane; epoxycyclohexane; 1,2-epoxy-cyclohexanol-3; 1,2- epoxycyclooctane; 2,3-epoxy- 2 - methylpentane; 1,2 - epoxy - 2,4,4 - trimethylpentane and 1,2-epoxyoctane. |
