[2.2] paracyclophane and derivatives thereof
    1.
    发明授权
    [2.2] paracyclophane and derivatives thereof 失效
    [2.2] paracyclophane及其衍生物

    公开(公告)号:US5302767A

    公开(公告)日:1994-04-12

    申请号:US37935

    申请日:1993-03-26

    CPC分类号: C07C1/323 C07C2103/92

    摘要: Processes are disclosed for preparing [2.2] paracyclophane and derivatives thereof by conducting the Hofmann elimination of p-methylbenzyltrimethylammonium hydroxide, or derivatives thereof, in the presence of an effective amount of oxygen to inhibit the formation of by-product polymers. The oxygen can be introduced, for example, by a purge gas stream containing molecular oxygen. Products produced by the processes are also disclosed.

    摘要翻译: 公开了通过在有效量的氧的存在下进行霍夫曼消除对甲基苄基三甲基氢氧化铵或其衍生物来制备[2.2]对环芳烃及其衍生物的方法,以抑制副产物聚合物的形成。 氧可以例如通过含有分子氧的吹扫气流引入。 还公开了由该方法生产的产品。