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41649111529
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note
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4: C, 70.75; H, 5.68; N, 7.17. Found: C, 70.59; H, 5.84; N, 7.02. All the products 9d-f were characterized by comparing their physical and spectral data with those of reported compounds (see, Ref. 15).
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56
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41649103912
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note
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2 was added into the mixture. Finally, trans-isoeugenol (or trans-anethole) was added dropwise to the reaction mixture. The temperature was kept to 70 °C under inert atmosphere (nitrogen) for 10 h. After complete conversion, as indicated by TLC, the crude product was purified by column chromatography without previous extraction to obtain tetrahydroquinolines 9a-f.
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59
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note
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2 was employed, the same procedure was used as described above.
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