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33846049949
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note
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Structures of 2,5-dihydropyrroles 4a, 8a, and 12a and 1H-pyrrole 15a were confirmed by single crystal X-ray structure analysis and their crystallographic data have been deposited with the Cambridge Crystallographic Data Centre as supplementary publication numbers CCDC 621689 for 4a, CCDC 621692 for 8a, CCDC 621691 for 12a, and CDDC 621693 for 15a copies of the data can be obtained, free of charge, on application to CCDC, 12 Union Road, Cambridge CB2 1EZ, UK (fax: +44 1223 336033 or e-mail: deposit@ccdc.cam.ac.uk).
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33846112031
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note
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3), 166.81 (5-C).
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26
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33846077940
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note
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3), 168.01 (5-C). Chromatographic separation on silica-gel of 14a from the mixture gave an inseparable mixture of 14a, 13a, and other many products due to the decomposition.
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27
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33846069622
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note
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3): 32.99, 51.52, 51.55, 112.31, 116.40, 123.02, 127.06, 128.96, 129.00, 137.32, 137.48, 164.49, 165.33.
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0001013435
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Padwa A., Gasdaska J.R., Tomas M., Turro N.J., Cha Y., and Gould I.R. J. Am. Chem. Soc. 108 (1986) 6739-6746
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33
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0000432199
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3c Therein, the 2H-pyrroles were formed in situ by the DDQ-oxidation of 2,5-dihydropyrroles, which were obtained by the reaction of NH-azomethine ylides with MP. Also, an isomerization process, a sigmatropic rearrangement, of 3H-pyrrole to 2H- and 1H-pyrrole finally through the ester group imigration was discussed:
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3c Therein, the 2H-pyrroles were formed in situ by the DDQ-oxidation of 2,5-dihydropyrroles, which were obtained by the reaction of NH-azomethine ylides with MP. Also, an isomerization process, a sigmatropic rearrangement, of 3H-pyrrole to 2H- and 1H-pyrrole finally through the ester group imigration was discussed:. Chiu P.-K., and Sammes M.P. Tetrahedron 46 (1990) 3439-3456
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(1990)
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Chiu, P.-K.1
Sammes, M.P.2
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