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A simple and convenient method has been proposed for the synthesis of new isoquinoline derivatives via intramolecular cyclization of imides obtained from acid anhydrides and 2-(3,4-dimethoxyphenyl)ethanamine (homoveratrylamine). The cyclization was carried out by treatment with sodium tetrahydridoborate and aqueous hydrogen chloride.
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Сахаутдинов et al. (2022) studied this question.
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