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    • 5. 发明授权
    • Process for producing butyric ester derivatives
    • 丁酸衍生物的制备方法
    • US6140527A
    • 2000-10-31
    • US355529
    • 1999-09-07
    • Shigeki KunihiroFumihiko KanoNatsuki Mori
    • Shigeki KunihiroFumihiko KanoNatsuki Mori
    • C07C253/14C07C253/34C07C255/20C07C253/00
    • C07C253/34C07C253/14
    • This invention has its objects to provide a process for producing a butyric acid ester derivative of the above general formula (2) which is capable of removing various impurity byproducts whose formation cannot be avoided by the prior art technology, particularly the compound of the above general formula (1), with good efficiency.This invention is related to a process for producing a butyric acid ester derivative of the general formula (2) which comprises treating a mixture containing a compound of the following general formula (1) with an addition reagent capable of adding itself to said ethylenic bond to thereby convert said compound of the general formula (1) to an addition product which can be easily separated from said butyric acid ester derivative of the general formula (2) and a process for producing a butyric acid ester derivative of the general formula (2) which comprises reacting a compound of the general formula (3) with a salt of prussic acid by a flow method.HOCH.sub.2 --CH.dbd.CH--COOR (1) ##STR1##
    • PCT No.PCT / JP98 / 03686 Sec。 371 1999年9月7日第 102(e)1999年9月7日PCT PCT 1998年8月20日PCT公布。 出版物WO99 /​​ 31050 日期1999年6月24日本发明的目的是提供一种上述通式(2)的丁酸酯衍生物的制造方法,其能够除去现有技术中不能避免的各种杂质副产物,特别是 上述通式(1)的化合物,效率高。 本发明涉及一种制备通式(2)的丁酸酯衍生物的方法,该方法包括用能够将其自身加入所述烯键的加成试剂处理含有下列通式(1)的化合物的混合物 从而将所述通式(1)的化合物转化为可以容易地从通式(2)的丁酸酯衍生物分离的加成产物和通式(2)的丁酸酯衍生物的制备方法, 其包括通过流动法使通式(3)的化合物与氢氰酸的盐反应。 HOCH2-CH = CH- COOR(1)