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    • 10. 发明授权
    • Process for producing t-butyl esters of bridged-ring polycarboxylic acids
    • 制备桥环多元羧酸的叔丁酯的方法
    • US06515165B1
    • 2003-02-04
    • US09889882
    • 2001-07-24
    • Keizo InoueShinya NaganoTomohide Ina
    • Keizo InoueShinya NaganoTomohide Ina
    • C07C6974
    • G03F7/0045C07C67/14C07C67/48C07C69/753C07C2602/42C07C2603/74
    • In a process of the present invention for producing a bridged cyclic polycarboxylic acid t-butyl ester, a bridged cyclic polycarboxylic halide of following Formula (1): (wherein ring Z is a bridged cyclic carbon ring; X is a halogen atom; and m denotes an integer of 2 or more, where ring Z may have a substituent) is allowed to react with t-butyl alcohol or its alkali metal salt to thereby yield an ester of following Formula (2): (wherein tBu is a t-butyl group; and ring Z and m have the same meanings as defined above.) This process can commercially efficiently produce a bridged cyclic polycarboxylic acid t-butyl ester. The compound of Formula (1) can be prepared by allowing a bridged cyclic polycarboxylic acid of following Formula (3): (wherein ring Z is a bridged cyclic carbon ring; and m denotes an integer of 2 or more, where ring Z may have a substituent) to react with a halogenating agent.
    • 在本发明的制备桥联环状多元羧酸叔丁酯的方法中,具有下式(1)的桥连环状多羧酸卤化物(其中环Z是桥连环碳环; X是卤素原子; m 表示2以上的整数,其中环Z可以具有取代基)与叔丁醇或其碱金属盐反应,从而得到下式(2)的酯:(其中tBu是叔丁基 基团;且环Z和m具有与上述相同的含义。)该方法可商业上有效地制备桥连环状多元羧酸叔丁酯。 式(1)的化合物可以通过使下述式(3)的桥连环状多元羧酸(其中环Z为桥连环状碳环; m表示2以上的整数,其中环Z可以具有 取代基)与卤化剂反应。