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85030276441
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note
-
1H-NMR spectra of crude reaction products, which display differentiate signals for olefinic protons of both regioisomers.
-
-
-
-
30
-
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85030279502
-
-
note
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17. Regioisomers 6 are transformed into Diels-Alder adducts under the employed reaction conditions, while regioisomers 7 are detected as minor unchanged material. Diels-Alder adducts and unchanged 7 are readily separated during the purification of the reaction products.
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31
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85030277196
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note
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f6b =+20.6 Kj/mol
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-
-
-
36
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37049067030
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22. Gupta, R.C., Raynor, C.M.; Stoodley, R.J.; Slawin, A.M.Z. and Williams, D.J. J. Chem. Soc. Perkin Trans. 1 1988, 1773. Larsen, D.S. and Stoodley, R.J. J. Chem. Soc. Perkin Trans. 1 1989, 1841.
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22. Gupta, R.C., Raynor, C.M.; Stoodley, R.J.; Slawin, A.M.Z. and Williams, D.J. J. Chem. Soc. Perkin Trans. 1 1988, 1773. Larsen, D.S. and Stoodley, R.J. J. Chem. Soc. Perkin Trans. 1 1989, 1841.
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Larsen, D.S.1
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38
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0001342085
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Diastereomeric transition state structures were generated by a systematic Monte Carlo conformational search and then minimized using the MM2 forcefield implemented in Macromodel v.4
-
23. Diastereomeric transition state structures were generated by a systematic Monte Carlo conformational search and then minimized using the MM2 forcefield implemented in Macromodel v.4. Raimondi, L.; Brown, F.K.; González, J. and Houk, K.N. J. Am. Chem. Soc. 1992, 114, 4796. Mohamadyi, F.; Richards, N.G.J.; Guida, W.C.; Liskamp, R.; Lipton, M.; Caufield, C.; Chang, G.; Hendrickson, T. and Still, W.C. J. Comput. Chem. 1990, 11, 440.
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84986437005
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23. Diastereomeric transition state structures were generated by a systematic Monte Carlo conformational search and then minimized using the MM2 forcefield implemented in Macromodel v.4. Raimondi, L.; Brown, F.K.; González, J. and Houk, K.N. J. Am. Chem. Soc. 1992, 114, 4796. Mohamadyi, F.; Richards, N.G.J.; Guida, W.C.; Liskamp, R.; Lipton, M.; Caufield, C.; Chang, G.; Hendrickson, T. and Still, W.C. J. Comput. Chem. 1990, 11, 440.
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40
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0000833951
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H6a-7 = 4.4Hz
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