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(a) The acid-catalyzed reaction of the quinol derivative affords a phenanthrene: Stern, A. J.; Swenton, J. S. J. Org. Chem. 1988, 53, 2465.
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14
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85088231337
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note
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8 poor yields were obtained. The difference between additions to enones and the work herein is undoubtedly the directive effect of the ether linkages at the 4-position of these quinol ether derivatives.
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24
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85088227714
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note
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3) which would arise from benzylic oxidation of 16c (R = H). However, the compound was not rigorously characterized.
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25
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0000977420
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The stability of 19e with respect to dimerization is probably related to the steric effect of the 4-aryl substituent. For a discussion, see: Andersson, G.; Bertsson, Acta Chem. Scand., Ser. B 1975, 29, 948. Andersson, G. Ibid. 1976, 30, 64.
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0001902801
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The stability of 19e with respect to dimerization is probably related to the steric effect of the 4-aryl substituent. For a discussion, see: Andersson, G.; Bertsson, Acta Chem. Scand., Ser. B 1975, 29, 948. Andersson, G. Ibid. 1976, 30, 64.
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Andersson, G.1
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For iodobenzene diacetate oxidation of phenols to quinone monoketals, see: (a) Peiter, A.; Elgendy, S. Tetrahedron Lett. 1988, 29, 677. (b) Tamura, Y.; Yakura, T.; Haruta, J ; Kita, Y. J. Org. Chem. 1987, 52, 3927. (c) Fleck, A. E.; Hobart, J. A.; Morrow, G. W. Synth. Commun. 1992, 22, 179.
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For iodobenzene diacetate oxidation of phenols to quinone monoketals, see: (a) Peiter, A.; Elgendy, S. Tetrahedron Lett. 1988, 29, 677. (b) Tamura, Y.; Yakura, T.; Haruta, J ; Kita, Y. J. Org. Chem. 1987, 52, 3927. (c) Fleck, A. E.; Hobart, J. A.; Morrow, G. W. Synth. Commun. 1992, 22, 179.
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For iodobenzene diacetate oxidation of phenols to quinone monoketals, see: (a) Peiter, A.; Elgendy, S. Tetrahedron Lett. 1988, 29, 677. (b) Tamura, Y.; Yakura, T.; Haruta, J ; Kita, Y. J. Org. Chem. 1987, 52, 3927. (c) Fleck, A. E.; Hobart, J. A.; Morrow, G. W. Synth. Commun. 1992, 22, 179.
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For phenolic coupling reactions with positive iodine reagents, see: Szantay, C.; Blasko, G.; Barczai-Beke, Pechy, P.; Dornyei, G. Tetrahedron Lett. 1980, 21, 3509. Rama Krishna, K. V.; Sujatha, K.; Kapil, R. S. Ibid. 1990, 31, 1351. Kita, Y.; Yakura, T.; Tohma, H.; Kikuchi, K. Tetrahedron Lett. 1989, 30, 1119.
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0025137514
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For phenolic coupling reactions with positive iodine reagents, see: Szantay, C.; Blasko, G.; Barczai-Beke, Pechy, P.; Dornyei, G. Tetrahedron Lett. 1980, 21, 3509. Rama Krishna, K. V.; Sujatha, K.; Kapil, R. S. Ibid. 1990, 31, 1351. Kita, Y.; Yakura, T.; Tohma, H.; Kikuchi, K. Tetrahedron Lett. 1989, 30, 1119.
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For phenolic coupling reactions with positive iodine reagents, see: Szantay, C.; Blasko, G.; Barczai-Beke, Pechy, P.; Dornyei, G. Tetrahedron Lett. 1980, 21, 3509. Rama Krishna, K. V.; Sujatha, K.; Kapil, R. S. Ibid. 1990, 31, 1351. Kita, Y.; Yakura, T.; Tohma, H.; Kikuchi, K. Tetrahedron Lett. 1989, 30, 1119.
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For nonoxidative methods for generating phenoxonium ions, see: Mortlock, S. V.; Seckington, J. K.; Thomas, E. J. J. Chem. Soc., Perkin Trans. 1988, 2305. Abramovitch, R. A.; Alvernhe, G., Bartnik, R.; Dassanayake, N. L.; Inbasekaran, M. N.; Kato, S. J. Am. Chem. Soc. 1981, 103, 4558. Shudo, K.; Orihara, Y.; Ohta, T.; Okamota, T. J. Am. Chem. Soc. 1981, 103, 943 and references cited therein
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For nonoxidative methods for generating phenoxonium ions, see: Mortlock, S. V.; Seckington, J. K.; Thomas, E. J. J. Chem. Soc., Perkin Trans. 1988, 2305. Abramovitch, R. A.; Alvernhe, G., Bartnik, R.; Dassanayake, N. L.; Inbasekaran, M. N.; Kato, S. J. Am. Chem. Soc. 1981, 103, 4558. Shudo, K.; Orihara, Y.; Ohta, T.; Okamota, T. J. Am. Chem. Soc. 1981, 103, 943 and references cited therein
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and references cited therein
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For nonoxidative methods for generating phenoxonium ions, see: Mortlock, S. V.; Seckington, J. K.; Thomas, E. J. J. Chem. Soc., Perkin Trans. 1988, 2305. Abramovitch, R. A.; Alvernhe, G., Bartnik, R.; Dassanayake, N. L.; Inbasekaran, M. N.; Kato, S. J. Am. Chem. Soc. 1981, 103, 4558. Shudo, K.; Orihara, Y.; Ohta, T.; Okamota, T. J. Am. Chem. Soc. 1981, 103, 943 and references cited therein
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For extensions of these model studies to bimolecular anodic carbon-carbon bond formation via phenol oxidations, see: (a) Wang, S.; Gates, B. D.; Swenton, J. S. J. Org. Chem. 1991, 56, 1979. (b) Gates, B. D., Dalidowicz, P.; Tebben, A.; Wang, S.; Swenton, J. S. Ibid. 1992, 57, 1992. (c) Kerns, M. L.; Conroy, S. M.; Swenton, J. S. Tetrahedron Lett. 1994, 35, 7529.
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For extensions of these model studies to bimolecular anodic carbon-carbon bond formation via phenol oxidations, see: (a) Wang, S.; Gates, B. D.; Swenton, J. S. J. Org. Chem. 1991, 56, 1979. (b) Gates, B. D., Dalidowicz, P.; Tebben, A.; Wang, S.; Swenton, J. S. Ibid. 1992, 57, 1992. (c) Kerns, M. L.; Conroy, S. M.; Swenton, J. S. Tetrahedron Lett. 1994, 35, 7529.
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