| 21. | Despite mediocre yields, intermolecular cycloadditions of indole derivatives have been well documented.
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| 22. | Set the " 3, 4 "-bond of the indole horizontal.
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| 23. | Indole reacts with an enamide catalyzed by a chiral BINOL derived phosphoric acid:
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| 24. | It is also rich in pharmacologically interesting indole alkaloids.
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| 25. | Typical simple aromatic compounds are benzene and indole.
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| 26. | Examples of non-basic nitrogen-containing aromatic rings are pyrrole and indole.
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| 27. | Thus melatonin contains an indole part, whereas agomelatine has a naphthalene bioisostere instead.
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| 28. | The Leimgruber-Batcho indole synthesis gives similar flexibility and regiospecificity to indole derivatives.
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| 29. | The Leimgruber-Batcho indole synthesis gives similar flexibility and regiospecificity to indole derivatives.
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| 30. | Indole itself was first obtained by Adolf von Baeyer in 1866 while decomposing Indigo.
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