PROCESSES FOR PREPARATION OF CYCLOPROPYLETHANOL, CYCLO-PROPYLACETONITRILE AND INTERMEDIATES OF BOTH
    8.
    发明公开
    PROCESSES FOR PREPARATION OF CYCLOPROPYLETHANOL, CYCLO-PROPYLACETONITRILE AND INTERMEDIATES OF BOTH 审中-公开
    过程对于这两个连接产生与环丙基CYLCOPROPYLACETONITRIL和中间产品

    公开(公告)号:EP1445248A4

    公开(公告)日:2006-03-22

    申请号:EP02779965

    申请日:2002-10-31

    申请人: KURARAY CO

    发明人: UJITA KATSUJI

    摘要: A process for preparation of cyclopropylethanol which comprises subjecting a 3-cyclopropyl-2,3-epoxypropionic ester to solvolysis, treating the obtained product with an acid to form cyclopropylacetaldehyde, and reducing this aldehyde; and a process for preparation of cyclopropylacetonitrile which comprises reacting cyclopropylacetaldehyde obtained in the above process with hydroxylamine or a salt thereof to form cyclopropaneacetaldehyde oxime and reacting this oxime with acetic anhydride. According to the present invention, cyclopropylethanol or cyclopropylacetonitrile can be industrially advantageously prepared at a low cost.

    摘要翻译: 一种制备环丙基的方法,该方法包括使3-环丙基-2,3-环氧丙酸酯溶剂分解,用酸处理溶剂分解的产物,以获得至cyclopropylacetaldehyde,降低所获得的cyclopropylacetaldehyde; 和用于制备环丙基乙腈的,该方法包括使3-环丙基-2,3-环氧丙酸酯在碱的存在下溶剂分解,用酸处理溶剂分解的产物的方法,以获得到cyclopropylacetaldehyde,该反应得到cyclopropylacetaldehyde与 羟胺或其盐以获得cyclopropaneacetaldehyde肟,和与乙酸酐反应而获得cyclopropaneacetaldehyde肟。 。根据本发明,环丙基和环丙基乙腈可以以低的成本和工业上有利地制备。