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Iesce, M.R.1
Cermola, F.2
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34
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33544463526
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Low temperature was necessary because endoperoxides of furans bearing encumbered groups at 2-position are quite unstable, and rearrange from C-C to C-O derivatives through a Baeyer-Villiger type-mechanism: (a)
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Low temperature was necessary because endoperoxides of furans bearing encumbered groups at 2-position are quite unstable, and rearrange from C-C to C-O derivatives through a Baeyer-Villiger type-mechanism: (a) F. Cermola, M.R. Iesce, and S. Montella Lett. Org. Chem. 1 2004 271 275
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Cermola, F.1
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Montella, S.3
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36
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84891784290
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2S were removed under reduced pressure
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2S were removed under reduced pressure.
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37
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84891813311
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2 of Bn), 4.50 (d, J = 11.5 Hz, 1H, CH of Bn), 4.55 (m, 1H, H-5′), 4.63 (d, J = 10.9 Hz, 1H, CH of Bn), 4.78 (d, J = 10.9 Hz, 1H, CH of Bn), 4.83 (d, J = 10.9 Hz, 1H, CH of Bn)
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8: C, 73.53; H, 5.85. Found: C, 73.41; H, 5.76.
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-
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41
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84891811145
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â̂- method
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â̂- method.
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-
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42
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84891773213
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Calculations found that (2R)-5a is more stable than (2S)-6a of 3.7 kcal/mol
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Calculations found that (2R)-5a is more stable than (2S)-6a of 3.7 kcal/mol.
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