Method of Making Ketals and Acetals
    6.
    发明申请
    Method of Making Ketals and Acetals 有权
    制品和缩醛的方法

    公开(公告)号:US20100292491A1

    公开(公告)日:2010-11-18

    申请号:US12757065

    申请日:2010-04-09

    IPC分类号: C07D407/12 C07D307/16

    CPC分类号: C07D407/12 C07D317/14

    摘要: The reaction of alcohols with oxocarboxylates to form acetals or ketals is catalyzed by unexpectedly low levels of protic acids. By employing low acid catalyst levels compared to amounts conventionally used, rapid formation of acetal or ketal is facilitated while the formation of oxocarboxylate esters is minimized. Further employing a significant molar excess of oxocarboxylate in conjunction with low acid catalyst level gives rise to the rapid and clean formation of acetals and ketals from oxocarboxylates and alcohols.

    摘要翻译: 醇与氧代羧酸酯反应形成缩醛或缩酮反应由意想不到的低水平的质子酸催化。 通过使用与常规使用的量相比低的酸催化剂水平,促进缩醛或缩酮的快速形成,同时氧化羧酸酯的形成最小化。 进一步使用显着摩尔过量的氧代羧酸酯与低酸催化剂水平相结合,导致来自氧代羧酸酯和醇的缩醛和缩酮的快速和清洁的形成。