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    • 2. 发明申请
    • PROCESS FOR PRODUCING EPOXIDE
    • 生产环氧化物的方法
    • WO1993023387A1
    • 1993-11-25
    • PCT/JP1993000648
    • 1993-05-18
    • JAPAN TABACCO INC.MATSUMOTO, Katsuya;EBATA, Takashi;KOSEKI, Koshi;OKANO, Koji;KAWAKAMI, Hiroshi;MATSUSHITA, Hajime;
    • JAPAN TABACCO INC.
    • C07D301/03
    • C07D301/14C07D301/02C07D301/24C07D303/04C07D493/04C07D493/08C07H3/10
    • A process for producing an epoxide represented by general formula (1a) or (1b), which comprises reacting an olefin represented by general formula (2) with a compound containing iodine and an acyloxy ion and treating the reaction product under a basic condition so as to form an oxirane ring on the stereochemically crowded side of the feed olefin. In formulae (1a), (1b) and (2), R , R , R and R represent each hydrogen, alkyl, alkenyl, aryl, alkoxy, aryloxy, acyl, alkoxycarbonyl, aryloxycarbonyl, aralkyl, silyl or silyloxy, provided that when each of these groups represents a divalent group, they may be combined together to represent a cyclic group, and that these groups may be the same or different from one another and further may be substituted or branched. The plane formed by the double bond, R , R , R and R has one side which is stereochemically more crowded than the other side.
    • 一种制备由通式(1a)或(1b)表示的环氧化物的方法,其包括使通式(2)表示的烯烃与含有碘和酰氧基离子的化合物反应,并在碱性条件下处理反应产物,以便 以在进料烯烃的立体化学拥挤侧上形成环氧乙烷环。 在式(1a),(1b)和(2)中,R 1,R 2,R 3和R 4分别表示氢,烷基,烯基,芳基,烷氧基,芳氧基,酰基, ,芳氧基羰基,芳烷基,甲硅烷基或甲硅烷氧基,条件是当这些基团各自表示二价基团时,它们可以组合在一起以表示环状基团,并且这些基团可以彼此相同或不同,并且还可以被取代 或分支。 由双键形成的平面R 1,R 2,R 3和R 4具有立体化学比另一侧更拥挤的一面。