Over HBEA, liquid phase acetylation of 2-methoxynaphthalene (2-MN) by acetic anhydride leads directly to 1-acetyl-2-methoxy-naphthalene (I), to 2-acetyl-6-methoxynaphthalene (II), and to a small amount of 1-acetyl-7-methoxynaphthalene (III). At a long contact time, isomer I undergoes deacylation into 2-MN and isomerisation into II and III. Isomerisation of I is much faster in the presence of 2-MN than in its absence, which suggests that this reaction occurs through an intermolecular transacylation mechanism. The transformation of isomer I with a deuterated methoxy group (OCD₃) in the presence of 2-MN shows that isomer II results only from this mechanism whereas an intramolecular mechanism participates also in the formation of isomer III.

中文翻译：

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HBEA沸石上1-乙酰基-2-甲氧基萘的异构化机理

在HBEA上，通过乙酸酐对2-甲氧基萘（2-MN）进行液相乙酰化可直接导致1-乙酰基-2-甲氧基萘（I），2-乙酰基-6-甲氧基萘（II）和少量量的1-乙酰基-7-甲氧基萘（III）。在长时间的接触中，异构体I会发生脱酰作用，形成2-MN，然后异构化成II和III。存在2-MN时，I的异构化要比不存在2-I时的I异构化快得多，这表明该反应是通过分子间的酰化反应机理发生的。在2-MN存在下，具有氘代甲氧基（OCD ₃）的异构体I的转化表明，异构体II仅由该机理引起，而分子内机理也参与了异构体III的形成。