PROCESS FOR PRODUCING EPOXIDE
    1.
    发明公开
    PROCESS FOR PRODUCING EPOXIDE 失效
    VERFAHREN ZUR HERSTELLUNG VON EPOXIDEN。

    公开(公告)号:EP0604656A1

    公开(公告)日:1994-07-06

    申请号:EP93910351.1

    申请日:1993-05-18

    摘要: 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), R¹, R², R³ and R⁴ 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, R¹, R², R³ and R⁴ has one side which is stereochemically more crowded than the other side.

    摘要翻译: 一种制备由通式(1a)或(1b)表示的环氧化物的方法,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各自表示氢,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 或分枝。 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。