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    • 45. 发明授权
    • Superacid catalyzed preparation of resorcinol from meta-isopropylphenol
    • 超临界催化从间 - 异丙基苯酚制备间苯二酚
    • US4423254A
    • 1983-12-27
    • US383941
    • 1982-06-01
    • George A. Olah
    • George A. Olah
    • C07C37/00C07C37/055C07C37/08C07C37/14C07C37/16C07C37/18C07C37/48C07C39/06
    • C07C37/08C07C37/055C07C37/0555C07C37/14C07C37/16C07C37/18C07C37/48
    • Resorcinol is prepared by an improved process through superacid (such as perfluorinated alkanesulfonic superacids of one to eighteen carbon atoms or polymeric perfluorinated resinsulfonic acids, such as Nafion-H catalyzed cleavage-rearrangement reaction of meta-isopropylphenol hydroperoxide in the form of its protected ether or ester derivatives, including readily cleavable and reusable trimethylsilyl and trifluoromethanesulfonyl derivates. Part of the process is the preparation of needed meta-isopropylphenol in high purity free of other isomers by treating any mixture of isopropylphenol isomers in an excess of anhydrous hydrogen fluoride or a perfluorinated alkanesulfonic superacid of one to eighteen carbon atoms and a Lewis acid fluoride or by alkylating (transalkylating) phenol with a propyl alkylating agent in the presence of the aforementioned superacid systems.
    • 间苯二酚通过超强酸(例如1至18个碳原子的全氟化烷烃磺酸超强酸或聚合全氟磺酸磺酸)的改进方法制备,例如Nafion-H催化的经受保护的醚形式的间异丙基苯酚氢过氧化物的裂解重排反应,或 酯衍生物,包括易裂解和可重复使用的三甲基甲硅烷基和三氟甲磺酰基衍生物。该方法的一部分是通过将过量无水氟化氢或全氟化烷烃磺酸的异丙基苯酚异构体的任何混合物处理,制备所需的高纯度的不含异构体的间异丙基苯酚 通过在上述超酸体系的存在下,使用丙烷基化剂将烷基化(烷基转移)苯酚与1至18个碳原子的超酸和路易斯酸氟化物反应。