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Both haloquinones and stannylquinones have been employed in palladium-catalyzed cross-coupling reactions, see: (a) Haloquinones: Tamayo, N.; Echavarren, A. M.; Paredes, M. C. J. Org. Chem. 1991, 56(23), 6488-6491. Echavarren, A. M.; Tamayo, N.; Paredes, M. C. Tetrahedron Lett. 1993, 34(29), 4713-4716. Fukuyama, Y.; Kiriyama, Y.; Kodama, M. Tetrahedron Lett. 1993, 34(47), 7637-7638. Chan, K. S.; Mak, C. C. Tetrahedron 1994, 50(7), 2003-2016. Rama Devi, A.; Iyengar, D. S.; Pardhasaradhi, M. Tetrahedron 1994, 50(8), 2543-2550. Echavarren, A. M.; Tamayo, N.; Cárdenas, D. J. J. Org. Chem. 1994, 59, 9(20), 6075-6083. Gothelf, K. V.; Torssell, K. B. G. Acta Chem. Scand. 1994, 48, 61-67. Graham, A. E.; McKerrecher, D.; Davies, D. H.; Taylor, R. J. K. Tetrahedron Lett. 1996, 37(41), 7445-7448. de Frutos, O.; Echavarren, A. M. Tetrahedron Lett. 1996, 37(49), 8953-8956. Yoshida, S.; Kubo, H.; Saika, T.; Katsumura, S. Chem. Lett. 1996, 139-140. Mohri, S.; Stefinovic, M.; Snieckus, V. J. Org. Chem. 1997, 62(21), 7072-7073.
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Both haloquinones and stannylquinones have been employed in palladium-catalyzed cross-coupling reactions, see: (a) Haloquinones: Tamayo, N.; Echavarren, A. M.; Paredes, M. C. J. Org. Chem. 1991, 56(23), 6488-6491. Echavarren, A. M.; Tamayo, N.; Paredes, M. C. Tetrahedron Lett. 1993, 34(29), 4713-4716. Fukuyama, Y.; Kiriyama, Y.; Kodama, M. Tetrahedron Lett. 1993, 34(47), 7637-7638. Chan, K. S.; Mak, C. C. Tetrahedron 1994, 50(7), 2003-2016. Rama Devi, A.; Iyengar, D. S.; Pardhasaradhi, M. Tetrahedron 1994, 50(8), 2543-2550. Echavarren, A. M.; Tamayo, N.; Cárdenas, D. J. J. Org. Chem. 1994, 59, 9(20), 6075-6083. Gothelf, K. V.; Torssell, K. B. G. Acta Chem. Scand. 1994, 48, 61-67. Graham, A. E.; McKerrecher, D.; Davies, D. H.; Taylor, R. J. K. Tetrahedron Lett. 1996, 37(41), 7445-7448. de Frutos, O.; Echavarren, A. M. Tetrahedron Lett. 1996, 37(49), 8953-8956. Yoshida, S.; Kubo, H.; Saika, T.; Katsumura, S. Chem. Lett. 1996, 139-140. Mohri, S.; Stefinovic, M.; Snieckus, V. J. Org. Chem. 1997, 62(21), 7072-7073.
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Both haloquinones and stannylquinones have been employed in palladium-catalyzed cross-coupling reactions, see: (a) Haloquinones: Tamayo, N.; Echavarren, A. M.; Paredes, M. C. J. Org. Chem. 1991, 56(23), 6488-6491. Echavarren, A. M.; Tamayo, N.; Paredes, M. C. Tetrahedron Lett. 1993, 34(29), 4713-4716. Fukuyama, Y.; Kiriyama, Y.; Kodama, M. Tetrahedron Lett. 1993, 34(47), 7637-7638. Chan, K. S.; Mak, C. C. Tetrahedron 1994, 50(7), 2003-2016. Rama Devi, A.; Iyengar, D. S.; Pardhasaradhi, M. Tetrahedron 1994, 50(8), 2543-2550. Echavarren, A. M.; Tamayo, N.; Cárdenas, D. J. J. Org. Chem. 1994, 59, 9(20), 6075-6083. Gothelf, K. V.; Torssell, K. B. G. Acta Chem. Scand. 1994, 48, 61-67. Graham, A. E.; McKerrecher, D.; Davies, D. H.; Taylor, R. J. K. Tetrahedron Lett. 1996, 37(41), 7445-7448. de Frutos, O.; Echavarren, A. M. Tetrahedron Lett. 1996, 37(49), 8953-8956. Yoshida, S.; Kubo, H.; Saika, T.; Katsumura, S. Chem. Lett. 1996, 139-140. Mohri, S.; Stefinovic, M.; Snieckus, V. J. Org. Chem. 1997, 62(21), 7072-7073.
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Fukuyama, Y.1
Kiriyama, Y.2
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85030130789
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Both haloquinones and stannylquinones have been employed in palladium-catalyzed cross-coupling reactions, see: (a) Haloquinones: Tamayo, N.; Echavarren, A. M.; Paredes, M. C. J. Org. Chem. 1991, 56(23), 6488-6491. Echavarren, A. M.; Tamayo, N.; Paredes, M. C. Tetrahedron Lett. 1993, 34(29), 4713-4716. Fukuyama, Y.; Kiriyama, Y.; Kodama, M. Tetrahedron Lett. 1993, 34(47), 7637-7638. Chan, K. S.; Mak, C. C. Tetrahedron 1994, 50(7), 2003-2016. Rama Devi, A.; Iyengar, D. S.; Pardhasaradhi, M. Tetrahedron 1994, 50(8), 2543-2550. Echavarren, A. M.; Tamayo, N.; Cárdenas, D. J. J. Org. Chem. 1994, 59, 9(20), 6075-6083. Gothelf, K. V.; Torssell, K. B. G. Acta Chem. Scand. 1994, 48, 61-67. Graham, A. E.; McKerrecher, D.; Davies, D. H.; Taylor, R. J. K. Tetrahedron Lett. 1996, 37(41), 7445-7448. de Frutos, O.; Echavarren, A. M. Tetrahedron Lett. 1996, 37(49), 8953-8956. Yoshida, S.; Kubo, H.; Saika, T.; Katsumura, S. Chem. Lett. 1996, 139-140. Mohri, S.; Stefinovic, M.; Snieckus, V. J. Org. Chem. 1997, 62(21), 7072-7073.
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Tetrahedron 1994
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Chan, K.S.1
Mak, C.C.2
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0028047667
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Both haloquinones and stannylquinones have been employed in palladium-catalyzed cross-coupling reactions, see: (a) Haloquinones: Tamayo, N.; Echavarren, A. M.; Paredes, M. C. J. Org. Chem. 1991, 56(23), 6488-6491. Echavarren, A. M.; Tamayo, N.; Paredes, M. C. Tetrahedron Lett. 1993, 34(29), 4713-4716. Fukuyama, Y.; Kiriyama, Y.; Kodama, M. Tetrahedron Lett. 1993, 34(47), 7637-7638. Chan, K. S.; Mak, C. C. Tetrahedron 1994, 50(7), 2003-2016. Rama Devi, A.; Iyengar, D. S.; Pardhasaradhi, M. Tetrahedron 1994, 50(8), 2543-2550. Echavarren, A. M.; Tamayo, N.; Cárdenas, D. J. J. Org. Chem. 1994, 59, 9(20), 6075-6083. Gothelf, K. V.; Torssell, K. B. G. Acta Chem. Scand. 1994, 48, 61-67. Graham, A. E.; McKerrecher, D.; Davies, D. H.; Taylor, R. J. K. Tetrahedron Lett. 1996, 37(41), 7445-7448. de Frutos, O.; Echavarren, A. M. Tetrahedron Lett. 1996, 37(49), 8953-8956. Yoshida, S.; Kubo, H.; Saika, T.; Katsumura, S. Chem. Lett. 1996, 139-140. Mohri, S.; Stefinovic, M.; Snieckus, V. J. Org. Chem. 1997, 62(21), 7072-7073.
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(1994)
Tetrahedron
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Rama Devi, A.1
Iyengar, D.S.2
Pardhasaradhi, M.3
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8
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0028135070
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9
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Both haloquinones and stannylquinones have been employed in palladium-catalyzed cross-coupling reactions, see: (a) Haloquinones: Tamayo, N.; Echavarren, A. M.; Paredes, M. C. J. Org. Chem. 1991, 56(23), 6488-6491. Echavarren, A. M.; Tamayo, N.; Paredes, M. C. Tetrahedron Lett. 1993, 34(29), 4713-4716. Fukuyama, Y.; Kiriyama, Y.; Kodama, M. Tetrahedron Lett. 1993, 34(47), 7637-7638. Chan, K. S.; Mak, C. C. Tetrahedron 1994, 50(7), 2003-2016. Rama Devi, A.; Iyengar, D. S.; Pardhasaradhi, M. Tetrahedron 1994, 50(8), 2543-2550. Echavarren, A. M.; Tamayo, N.; Cárdenas, D. J. J. Org. Chem. 1994, 59, 9(20), 6075-6083. Gothelf, K. V.; Torssell, K. B. G. Acta Chem. Scand. 1994, 48, 61-67. Graham, A. E.; McKerrecher, D.; Davies, D. H.; Taylor, R. J. K. Tetrahedron Lett. 1996, 37(41), 7445-7448. de Frutos, O.; Echavarren, A. M. Tetrahedron Lett. 1996, 37(49), 8953-8956. Yoshida, S.; Kubo, H.; Saika, T.; Katsumura, S. Chem. Lett. 1996, 139-140. Mohri, S.; Stefinovic, M.; Snieckus, V. J. Org. Chem. 1997, 62(21), 7072-7073.
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Echavarren, A.M.1
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Cárdenas, D.J.3
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0344644667
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Both haloquinones and stannylquinones have been employed in palladium-catalyzed cross-coupling reactions, see: (a) Haloquinones: Tamayo, N.; Echavarren, A. M.; Paredes, M. C. J. Org. Chem. 1991, 56(23), 6488-6491. Echavarren, A. M.; Tamayo, N.; Paredes, M. C. Tetrahedron Lett. 1993, 34(29), 4713-4716. Fukuyama, Y.; Kiriyama, Y.; Kodama, M. Tetrahedron Lett. 1993, 34(47), 7637-7638. Chan, K. S.; Mak, C. C. Tetrahedron 1994, 50(7), 2003-2016. Rama Devi, A.; Iyengar, D. S.; Pardhasaradhi, M. Tetrahedron 1994, 50(8), 2543-2550. Echavarren, A. M.; Tamayo, N.; Cárdenas, D. J. J. Org. Chem. 1994, 59, 9(20), 6075-6083. Gothelf, K. V.; Torssell, K. B. G. Acta Chem. Scand. 1994, 48, 61-67. Graham, A. E.; McKerrecher, D.; Davies, D. H.; Taylor, R. J. K. Tetrahedron Lett. 1996, 37(41), 7445-7448. de Frutos, O.; Echavarren, A. M. Tetrahedron Lett. 1996, 37(49), 8953-8956. Yoshida, S.; Kubo, H.; Saika, T.; Katsumura, S. Chem. Lett. 1996, 139-140. Mohri, S.; Stefinovic, M.; Snieckus, V. J. Org. Chem. 1997, 62(21), 7072-7073.
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Acta Chem. Scand.
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, pp. 61-67
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Gothelf, K.V.1
Torssell, K.B.G.2
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10
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0030573979
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Both haloquinones and stannylquinones have been employed in palladium-catalyzed cross-coupling reactions, see: (a) Haloquinones: Tamayo, N.; Echavarren, A. M.; Paredes, M. C. J. Org. Chem. 1991, 56(23), 6488-6491. Echavarren, A. M.; Tamayo, N.; Paredes, M. C. Tetrahedron Lett. 1993, 34(29), 4713-4716. Fukuyama, Y.; Kiriyama, Y.; Kodama, M. Tetrahedron Lett. 1993, 34(47), 7637-7638. Chan, K. S.; Mak, C. C. Tetrahedron 1994, 50(7), 2003-2016. Rama Devi, A.; Iyengar, D. S.; Pardhasaradhi, M. Tetrahedron 1994, 50(8), 2543-2550. Echavarren, A. M.; Tamayo, N.; Cárdenas, D. J. J. Org. Chem. 1994, 59, 9(20), 6075-6083. Gothelf, K. V.; Torssell, K. B. G. Acta Chem. Scand. 1994, 48, 61-67. Graham, A. E.; McKerrecher, D.; Davies, D. H.; Taylor, R. J. K. Tetrahedron Lett. 1996, 37(41), 7445-7448. de Frutos, O.; Echavarren, A. M. Tetrahedron Lett. 1996, 37(49), 8953-8956. Yoshida, S.; Kubo, H.; Saika, T.; Katsumura, S. Chem. Lett. 1996, 139-140. Mohri, S.; Stefinovic, M.; Snieckus, V. J. Org. Chem. 1997, 62(21), 7072-7073.
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Graham, A.E.1
McKerrecher, D.2
Davies, D.H.3
Taylor, R.J.K.4
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11
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0030566846
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Both haloquinones and stannylquinones have been employed in palladium-catalyzed cross-coupling reactions, see: (a) Haloquinones: Tamayo, N.; Echavarren, A. M.; Paredes, M. C. J. Org. Chem. 1991, 56(23), 6488-6491. Echavarren, A. M.; Tamayo, N.; Paredes, M. C. Tetrahedron Lett. 1993, 34(29), 4713-4716. Fukuyama, Y.; Kiriyama, Y.; Kodama, M. Tetrahedron Lett. 1993, 34(47), 7637-7638. Chan, K. S.; Mak, C. C. Tetrahedron 1994, 50(7), 2003-2016. Rama Devi, A.; Iyengar, D. S.; Pardhasaradhi, M. Tetrahedron 1994, 50(8), 2543-2550. Echavarren, A. M.; Tamayo, N.; Cárdenas, D. J. J. Org. Chem. 1994, 59, 9(20), 6075-6083. Gothelf, K. V.; Torssell, K. B. G. Acta Chem. Scand. 1994, 48, 61-67. Graham, A. E.; McKerrecher, D.; Davies, D. H.; Taylor, R. J. K. Tetrahedron Lett. 1996, 37(41), 7445-7448. de Frutos, O.; Echavarren, A. M. Tetrahedron Lett. 1996, 37(49), 8953-8956. Yoshida, S.; Kubo, H.; Saika, T.; Katsumura, S. Chem. Lett. 1996, 139-140. Mohri, S.; Stefinovic, M.; Snieckus, V. J. Org. Chem. 1997, 62(21), 7072-7073.
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De Frutos, O.1
Echavarren, A.M.2
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0030552733
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Both haloquinones and stannylquinones have been employed in palladium-catalyzed cross-coupling reactions, see: (a) Haloquinones: Tamayo, N.; Echavarren, A. M.; Paredes, M. C. J. Org. Chem. 1991, 56(23), 6488-6491. Echavarren, A. M.; Tamayo, N.; Paredes, M. C. Tetrahedron Lett. 1993, 34(29), 4713-4716. Fukuyama, Y.; Kiriyama, Y.; Kodama, M. Tetrahedron Lett. 1993, 34(47), 7637-7638. Chan, K. S.; Mak, C. C. Tetrahedron 1994, 50(7), 2003-2016. Rama Devi, A.; Iyengar, D. S.; Pardhasaradhi, M. Tetrahedron 1994, 50(8), 2543-2550. Echavarren, A. M.; Tamayo, N.; Cárdenas, D. J. J. Org. Chem. 1994, 59, 9(20), 6075-6083. Gothelf, K. V.; Torssell, K. B. G. Acta Chem. Scand. 1994, 48, 61-67. Graham, A. E.; McKerrecher, D.; Davies, D. H.; Taylor, R. J. K. Tetrahedron Lett. 1996, 37(41), 7445-7448. de Frutos, O.; Echavarren, A. M. Tetrahedron Lett. 1996, 37(49), 8953-8956. Yoshida, S.; Kubo, H.; Saika, T.; Katsumura, S. Chem. Lett. 1996, 139-140. Mohri, S.; Stefinovic, M.; Snieckus, V. J. Org. Chem. 1997, 62(21), 7072-7073.
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Yoshida, S.1
Kubo, H.2
Saika, T.3
Katsumura, S.4
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Both haloquinones and stannylquinones have been employed in palladium-catalyzed cross-coupling reactions, see: (a) Haloquinones: Tamayo, N.; Echavarren, A. M.; Paredes, M. C. J. Org. Chem. 1991, 56(23), 6488-6491. Echavarren, A. M.; Tamayo, N.; Paredes, M. C. Tetrahedron Lett. 1993, 34(29), 4713-4716. Fukuyama, Y.; Kiriyama, Y.; Kodama, M. Tetrahedron Lett. 1993, 34(47), 7637-7638. Chan, K. S.; Mak, C. C. Tetrahedron 1994, 50(7), 2003-2016. Rama Devi, A.; Iyengar, D. S.; Pardhasaradhi, M. Tetrahedron 1994, 50(8), 2543-2550. Echavarren, A. M.; Tamayo, N.; Cárdenas, D. J. J. Org. Chem. 1994, 59, 9(20), 6075-6083. Gothelf, K. V.; Torssell, K. B. G. Acta Chem. Scand. 1994, 48, 61-67. Graham, A. E.; McKerrecher, D.; Davies, D. H.; Taylor, R. J. K. Tetrahedron Lett. 1996, 37(41), 7445-7448. de Frutos, O.; Echavarren, A. M. Tetrahedron Lett. 1996, 37(49), 8953-8956. Yoshida, S.; Kubo, H.; Saika, T.; Katsumura, S. Chem. Lett. 1996, 139-140. Mohri, S.; Stefinovic, M.; Snieckus, V. J. Org. Chem. 1997, 62(21), 7072-7073.
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Differential protection of the hydroxyl groups in bisnaphthopyranylquinone 2 will allow us to oxidize the two naphthopyranyl subunits in separate synthetic steps, thus circumventing the undesired cyclotrimerization reaction, see: Laatsch, H. Angew. Chem., Int. Ed. Engl. 1994, 33(4), 422-424.
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It has been suggested that the low solubility of conocurvone requires the preparation of analogues with more favorable physical properties which will ultimately improve its bioavailability: Armstrong, J. A.; Baker, R. W.; Best, W. M.; Byrne, L. T.; Cannon, J. R.; Colegate, S. M.; Gray, A. R.; Marchant, N. G.; Rothnie, N.; Sargent, M. V.; Sims, C. G.; Spadek, Z. E.; Trengove, R. D. Aust. J. Chem. 1999, 52(1), 57-62.
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33751386638
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and references therein
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The effect of the nature of the alkyl groups on the stannane, the solvent and the added LiCl on aryl vs alkyl transfer in Stille coupling reactions has been described; see: Farina, V,; Krishnan, B.; Marshall, D. R.; Roth, G. P. J. Org. Chem. 1993, 58(20), 5434-5444, and references therein.
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4, mediated hydroxylation; see: Echavarren, A. M.; Tamayo, N.; Cardenas, D. J. J. Org. Chem. 1994, 59(20), 6075-6083.
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3As ligand, see: Farina, V.; Krishnan, B. J. Am. Chem. Soc. 1991, 113(25), 9585-9595.
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(a) Neel, D. A., Jirousek, M. R.; McDonald, J. H., III. Bioorg. Med. Chem. Lett. 1998, 8, 47-50.
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Neel, D.A.1
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(b) Farina, V.; Baker, S. R; Benigni, D. A.; Hauck, S. I.; Sapino, C. J. Org. Chem. 1990, 55 (23), 5833-5847.
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Sapino, C.5
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37
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0001748813
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Intramolecular migration of a trifluoromethanesulfonyl group in calixarene systems was reported to proceed only in the presence of a palladium catalyst, LiCl, and at least a catalytic amount of vinyl-tributyl stannane. See: Echavarren, A. M.; Gonzalez, J. J.; Nieto, P. M.; Prados, P.; de Mendoza, J. J. Org. Chem. 1995, 60(23), 7419-7423.
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De Mendoza, J.5
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38
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0001066413
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For an example of decreased reactivity toward ipso-substitution of methoxide due to the presence of an aryl ring on the quinone core, see: Liebeskind, L. S.; Yu, M. S.; Yu, R. H.; Wang, J.; Hagen, K. S. J. Am. Chem. Soc. 1993, 115(20), 9048-9055.
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Liebeskind, L.S.1
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Hagen, K.S.5
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39
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0000765097
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Differences in reactivity between hindered and unhindered substrates used in palladium mediated synthesis of hindered biaryls related to the michellamines have been observed: Hoye, T. R.; Chen, M. J. Org. Chem. 1996, 61(22), 7940-7942.
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Buchman, O.; Grosjean, M.; Nasielski, J. Bull. Soc. Chim. Belg. 1962, 71, 467-472.
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Buchman, O.1
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Bishop, M. E.; Schaeffer, C. D., Jr.; Zuckerman, J. J. Spectrochim. Acta 1976, 32A(8), 1519-1537.
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Bishop, M.E.1
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Zuckerman, J.J.3
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42
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0344644656
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note
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2 afforded the hydroxyquinone resulting from triflate decomposition as the major product accompanied by 11% of the diarylquinone. Unpublished results.
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-
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43
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0002459096
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Presumably, increased steric hindrance about the cross-coupling site and/or chelation of the MOM group in 9 to palladium could be responsible for the observed phenomenon. Chelation of an electron-donor group to palladium is known to give rise to stable cyclometalated complexes; see: Bruce, M. I. Angew. Chem., Int. Ed. Engl. 1997, 16, 73-86.
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Bruce, M.I.1
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44
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30644472561
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The reduction of electron-deficient quinone electrophiles during the Stille coupling leading to recovery of the uncoupled hydroquinone has been observed; see: Chan, K. S.; Mak, C. C. Tetrahedron 1994, 50(7), 2003-2016.
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(1994)
Tetrahedron
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Chan, K.S.1
Mak, C.C.2
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45
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0000828978
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Loss of trifluoromethanesulfinate ion from aryl triflates has been observed; see: Creary, X.; Benage, B.; Hilton, K. J. Org. Chem. 1983, 48(17), 2887-2891.
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Creary, X.1
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Hilton, K.3
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46
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0344213084
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Patai, S., Ed.; John Wiley & Sons: New York, Chapter 14
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For a discussion of substituent effects on reversible half-wave potentials of quinone/hydroquinone couples, see: Chambers, J. Q. In The Chemistry of the Functional Groups. The Chemistry of the Quinonoid Compounds; Patai, S., Ed.; John Wiley & Sons: New York, 1974; Part 2, Chapter 14.
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(1974)
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Chambers, J.Q.1
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47
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0344644655
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Patai, S., Rappoport, Z., Ed.; John Wiley & Sons: New York
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The use of remote substituents to control the regiochemistry of the Diels-Alder reaction in naphthoquinone systems has been summarized: Naruta Y.; Maruyama, K. In The Chemistry of the Quinonoid Compounds; Patai, S., Rappoport, Z., Ed.; John Wiley & Sons: New York, 1988; Vol. 2, pp 292-303.
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Naruta, Y.1
Maruyama, K.2
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48
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0345075364
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-
note
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13C NMR spectra. The spectra are still useful for identification of the structure of these compounds. Chemical shifts of the satellite peaks arising from the hindered rotation are indicated in parentheses following the parent signals.
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