REACTIONS USING LEWIS ACIDS
    96.
    发明申请
    REACTIONS USING LEWIS ACIDS 审中-公开
    使用LEWIS ACIDS的反应

    公开(公告)号:WO00069777A1

    公开(公告)日:2000-11-23

    申请号:PCT/GB2000/001793

    申请日:2000-05-11

    Abstract: In a method of performing a chemical reaction using a Lewis acid, after the reaction is complete, the Lewis acid is extracted from the reaction product in the form of an aqueous solution, followed by drying of the aqueous solution of the Lewis acid. The dried Lewis acid can be reused in a further similar reaction. The method can be repeated several times, using the same batch of Lewis acid, without the activity and specificity of the Lewis acid being significantly affected. The invention has been used to good effect in the ene reaction of isopulegol from citronellal, the Diels-Alder reaction of myrcene and 3-methyl-3-penten-2-one and the rearrangement reaction of alpha -pinene oxide to campholenic aldehyde using zinc bromide as a Lewis acid catalyst. The invention can thus provide an environmentally acceptable and efficient method for using Lewis acids in industrial processes.

    Abstract translation: 在使用路易斯酸进行化学反应的方法中,反应完成后,将路易斯酸以水溶液的形式从反应产物中提取,然后干燥路易斯酸水溶液。 干燥的路易斯酸可以再次用于进一步类似的反应。 该方法可以重复几次,使用相同批次的路易斯酸,而不影响路易斯酸的活性和特异性。 本发明已被用于对来自香茅醛的异丙醇的烯醇反应,月桂烯和3-甲基-3-戊烯-2-酮的狄尔斯 - 阿尔德反应和使用锌的α-蒎烯氧化物与樟脑醛的重排反应的良好效果 溴化物作为路易斯酸催化剂。 因此,本发明可以提供在工业过程中使用路易斯酸的环境可接受和有效的方法。

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