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1. (a) Comins, D. L.; Joseph, S. P.; Goehring, R. R. J. Am. Chem. Soc. 1994, 116, 4719.
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Comins, D.L.1
Joseph, S.P.2
Goehring, R.R.3
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and references cited therein
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(b) Comins, D. L.; Dehghani, A. J. Org. Chem. 1995, 60, 794 and references cited therein.
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Moody, C. J., ed.; JAI Press, Inc.: Greenwich
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2. Comins, D. L.; Joseph, S. P. In Advances in Nitrogen Heterocydes; Moody, C. J., ed.; JAI Press, Inc.: Greenwich, Vol. 2, pp. 251-294.
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Comins, D.L.1
Joseph, S.P.2
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4
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0025330888
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3. The synthetic utility of C-6 unsubstituted N-acyl-5,6-dihydro-2-pyridones has been demonstrated. For leading references, see: (a) Torisawa, Y.; Nakagawa, M.; Arai, H.; Lai, Z.; Hino, T.; Nakata, T.; Oishi, T. Tetrahedron Lett.. 1990, 31, 3195.
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Torisawa, Y.1
Nakagawa, M.2
Arai, H.3
Lai, Z.4
Hino, T.5
Nakata, T.6
Oishi, T.7
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5
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0026482862
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(b) Torisawa, Y.; Nakagawa, M.; Hosaka, T.; Tanabe, K.; Lai, Z.; Ogata, K.; Nakata, T.; Oishi, T.; Hino, T. J. Org. Chem. 1992, 57, 5741.
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Torisawa, Y.1
Nakagawa, M.2
Hosaka, T.3
Tanabe, K.4
Lai, Z.5
Ogata, K.6
Nakata, T.7
Oishi, T.8
Hino, T.9
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6
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84950086506
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and references cited therein
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4. Organocerium reagents undergo efficient carbonyl addition, see: (a) Imamoto, T. Pure Appl. Chem. 1990, 62, 747 and references cited therein.
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Imamoto, T.1
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(b) Comins, D. L.; Hong, H.; Saha, J.; Jianhua, G. J. Org. Chem. 1994, 59, 5120.
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Comins, D.L.1
Hong, H.2
Saha, J.3
Jianhua, G.4
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9
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0000667298
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5. For leading references on the oxidative rearrangement of tertiary allylic alcohols, see: Luzzio, F. A.; Moore, W. J. J. Org. Chem. 1993, 58, 2966.
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Luzzio, F.A.1
Moore, W.J.2
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10
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84986943610
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6. Guziec, F. S., Jr.; Luzzio, F. A. Synthesis 1980, 691. The BPCC used in this study was purchased from the Aldrich Chemical Company.
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Synthesis
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Guziec F.S., Jr.1
Luzzio, F.A.2
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11
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0027407051
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7. An alkylative carbonyl transposition of dihydro-γ-pyrones to a to a α, β-unsaturated δ-lactones has been reported, see: Nangia, A.; Rao, P. B. Tetrahedron Lett. 1993, 34, 2681.
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Nangia, A.1
Rao, P.B.2
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0002324898
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9. Fleming, I.; Dunoqués, J.; Smithers, R. Org. React. 1989, 39, 57-575.
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Org. React.
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Fleming, I.1
Dunoqués, J.2
Smithers, R.3
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14
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0011710681
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note
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10. The enantiomeric purity of 2e was determined by HPLC using a chiralcel OJ column (J.T. Baker, Inc., Phillipsburg, NJ).
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15
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0011768631
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note
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11. All new compounds were spectroscopically characterized and furnished satisfactory elemental analyses (C, H, N ± 0.4%) or high-resolution mass spectra.
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