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For recent examples of the FBW rearrangement, see: (a) Rezaei, H.; Yamanoi, S.; Chemla, F.; Normant, J. F. Org. Lett. 2000, 2, 419-421. (b) Creton, I.; Rezaei, H.; Marek, I.; Normant, J. F. Tetrahedron Lett. 1999, 40, 1899-1902. (c) Mouriès, V.; Waschbüsch, R.; Carran, J.; Savignac, P. Synthesis 1998, 271-274. (d) Sato, H.; Isono, N.; Miyoshi, I.; Mori, M. Tetrahedron 1996, 52, 8143-8158. (e) Kawase, T.; Darabi, H. R.; Uchimiya, R.; Oda, M. Chem. Lett. 1995, 499-500.
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The migration of an alkyne in a free carbene has recently been reported; see: Tobe, Y.; Iwasa, N.; Umeda, R.; Sonoda, M. Tetrahedron Lett. 2001, 42, 5485-5488.
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75
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0029928723
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For other examples of unsymmetrical diyne syntheses, see: (a) Alami, M.; Ferri, F. Tetrahedron Lett. 1996, 37, 2763-2766. (b) Kwon, J. H.; Lee, S. T.; Shim, S. C.; Hoshino, M. J. Org. Chem. 1994, 59, 1108-1114. (c) Aitken, R. A.; Seth, S. J. Chem. Soc., Perkin Trans. 1 1994, 2461-2466. (d) Blanco, L.; Helson, H. E.; Hirthammer, M.; Mestdagh, H.; Spyroudis, S.; Vollhardt, K. P. C. Angew. Chem., Int. Ed. Engl. 1987, 26, 1246-1247. (e) Ziegler, C. B., Jr.; Harris, S. M.; Baldwin, J. E. J. Org. Chem. 1987, 52, 443-446. (f) Fritzsche, U.; Hünig, S. Tetrahedron Lett. 1972, 4831-4834. (g) Lu, W.; Zheng, G.; Aisa, H. A.; Cai, J. Tetrahedron Lett. 1998, 39, 9521-9522. (h) Zheng, G.; Lu, W.; Cai, J. J. Nat. Prod. 1999, 62, 626-628. (i) Nishihara, Y.; Ikegashira, K.; Hirabayashi, K.; Ando, J.; Mori, A.; Hiyama, T. J. Org. Chem. 2000, 65, 1780-1787. (j) Nishihara, Y.; Ikegashira, K.; Mori, A.; Hiyama, T. Tetrahedron Lett. 1998, 39, 4075-4078. For another example of unsymmetrical triyne synthesis, see: Gardner, J. N.; Jones, E. R. H.; Leeming, P. R.; Stephenson, J. S. J. Chem. Soc. 1960, 691-697.
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Alami, M.1
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76
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For other examples of unsymmetrical diyne syntheses, see: (a) Alami, M.; Ferri, F. Tetrahedron Lett. 1996, 37, 2763-2766. (b) Kwon, J. H.; Lee, S. T.; Shim, S. C.; Hoshino, M. J. Org. Chem. 1994, 59, 1108-1114. (c) Aitken, R. A.; Seth, S. J. Chem. Soc., Perkin Trans. 1 1994, 2461-2466. (d) Blanco, L.; Helson, H. E.; Hirthammer, M.; Mestdagh, H.; Spyroudis, S.; Vollhardt, K. P. C. Angew. Chem., Int. Ed. Engl. 1987, 26, 1246-1247. (e) Ziegler, C. B., Jr.; Harris, S. M.; Baldwin, J. E. J. Org. Chem. 1987, 52, 443-446. (f) Fritzsche, U.; Hünig, S. Tetrahedron Lett. 1972, 4831-4834. (g) Lu, W.; Zheng, G.; Aisa, H. A.; Cai, J. Tetrahedron Lett. 1998, 39, 9521-9522. (h) Zheng, G.; Lu, W.; Cai, J. J. Nat. Prod. 1999, 62, 626-628. (i) Nishihara, Y.; Ikegashira, K.; Hirabayashi, K.; Ando, J.; Mori, A.; Hiyama, T. J. Org. Chem. 2000, 65, 1780-1787. (j) Nishihara, Y.; Ikegashira, K.; Mori, A.; Hiyama, T. Tetrahedron Lett. 1998, 39, 4075-4078. For another example of unsymmetrical triyne synthesis, see: Gardner, J. N.; Jones, E. R. H.; Leeming, P. R.; Stephenson, J. S. J. Chem. Soc. 1960, 691-697.
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For other examples of unsymmetrical diyne syntheses, see: (a) Alami, M.; Ferri, F. Tetrahedron Lett. 1996, 37, 2763-2766. (b) Kwon, J. H.; Lee, S. T.; Shim, S. C.; Hoshino, M. J. Org. Chem. 1994, 59, 1108-1114. (c) Aitken, R. A.; Seth, S. J. Chem. Soc., Perkin Trans. 1 1994, 2461-2466. (d) Blanco, L.; Helson, H. E.; Hirthammer, M.; Mestdagh, H.; Spyroudis, S.; Vollhardt, K. P. C. Angew. Chem., Int. Ed. Engl. 1987, 26, 1246-1247. (e) Ziegler, C. B., Jr.; Harris, S. M.; Baldwin, J. E. J. Org. Chem. 1987, 52, 443-446. (f) Fritzsche, U.; Hünig, S. Tetrahedron Lett. 1972, 4831-4834. (g) Lu, W.; Zheng, G.; Aisa, H. A.; Cai, J. Tetrahedron Lett. 1998, 39, 9521-9522. (h) Zheng, G.; Lu, W.; Cai, J. J. Nat. Prod. 1999, 62, 626-628. (i) Nishihara, Y.; Ikegashira, K.; Hirabayashi, K.; Ando, J.; Mori, A.; Hiyama, T. J. Org. Chem. 2000, 65, 1780-1787. (j) Nishihara, Y.; Ikegashira, K.; Mori, A.; Hiyama, T. Tetrahedron Lett. 1998, 39, 4075-4078. For another example of unsymmetrical triyne synthesis, see: Gardner, J. N.; Jones, E. R. H.; Leeming, P. R.; Stephenson, J. S. J. Chem. Soc. 1960, 691-697.
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For other examples of unsymmetrical diyne syntheses, see: (a) Alami, M.; Ferri, F. Tetrahedron Lett. 1996, 37, 2763-2766. (b) Kwon, J. H.; Lee, S. T.; Shim, S. C.; Hoshino, M. J. Org. Chem. 1994, 59, 1108-1114. (c) Aitken, R. A.; Seth, S. J. Chem. Soc., Perkin Trans. 1 1994, 2461-2466. (d) Blanco, L.; Helson, H. E.; Hirthammer, M.; Mestdagh, H.; Spyroudis, S.; Vollhardt, K. P. C. Angew. Chem., Int. Ed. Engl. 1987, 26, 1246-1247. (e) Ziegler, C. B., Jr.; Harris, S. M.; Baldwin, J. E. J. Org. Chem. 1987, 52, 443-446. (f) Fritzsche, U.; Hünig, S. Tetrahedron Lett. 1972, 4831-4834. (g) Lu, W.; Zheng, G.; Aisa, H. A.; Cai, J. Tetrahedron Lett. 1998, 39, 9521-9522. (h) Zheng, G.; Lu, W.; Cai, J. J. Nat. Prod. 1999, 62, 626-628. (i) Nishihara, Y.; Ikegashira, K.; Hirabayashi, K.; Ando, J.; Mori, A.; Hiyama, T. J. Org. Chem. 2000, 65, 1780-1787. (j) Nishihara, Y.; Ikegashira, K.; Mori, A.; Hiyama, T. Tetrahedron Lett. 1998, 39, 4075-4078. For another example of unsymmetrical triyne synthesis, see: Gardner, J. N.; Jones, E. R. H.; Leeming, P. R.; Stephenson, J. S. J. Chem. Soc. 1960, 691-697.
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For other examples of unsymmetrical diyne syntheses, see: (a) Alami, M.; Ferri, F. Tetrahedron Lett. 1996, 37, 2763-2766. (b) Kwon, J. H.; Lee, S. T.; Shim, S. C.; Hoshino, M. J. Org. Chem. 1994, 59, 1108-1114. (c) Aitken, R. A.; Seth, S. J. Chem. Soc., Perkin Trans. 1 1994, 2461-2466. (d) Blanco, L.; Helson, H. E.; Hirthammer, M.; Mestdagh, H.; Spyroudis, S.; Vollhardt, K. P. C. Angew. Chem., Int. Ed. Engl. 1987, 26, 1246-1247. (e) Ziegler, C. B., Jr.; Harris, S. M.; Baldwin, J. E. J. Org. Chem. 1987, 52, 443-446. (f) Fritzsche, U.; Hünig, S. Tetrahedron Lett. 1972, 4831-4834. (g) Lu, W.; Zheng, G.; Aisa, H. A.; Cai, J. Tetrahedron Lett. 1998, 39, 9521-9522. (h) Zheng, G.; Lu, W.; Cai, J. J. Nat. Prod. 1999, 62, 626-628. (i) Nishihara, Y.; Ikegashira, K.; Hirabayashi, K.; Ando, J.; Mori, A.; Hiyama, T. J. Org. Chem. 2000, 65, 1780-1787. (j) Nishihara, Y.; Ikegashira, K.; Mori, A.; Hiyama, T. Tetrahedron Lett. 1998, 39, 4075-4078. For another example of unsymmetrical triyne synthesis, see: Gardner, J. N.; Jones, E. R. H.; Leeming, P. R.; Stephenson, J. S. J. Chem. Soc. 1960, 691-697.
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For other examples of unsymmetrical diyne syntheses, see: (a) Alami, M.; Ferri, F. Tetrahedron Lett. 1996, 37, 2763-2766. (b) Kwon, J. H.; Lee, S. T.; Shim, S. C.; Hoshino, M. J. Org. Chem. 1994, 59, 1108-1114. (c) Aitken, R. A.; Seth, S. J. Chem. Soc., Perkin Trans. 1 1994, 2461-2466. (d) Blanco, L.; Helson, H. E.; Hirthammer, M.; Mestdagh, H.; Spyroudis, S.; Vollhardt, K. P. C. Angew. Chem., Int. Ed. Engl. 1987, 26, 1246-1247. (e) Ziegler, C. B., Jr.; Harris, S. M.; Baldwin, J. E. J. Org. Chem. 1987, 52, 443-446. (f) Fritzsche, U.; Hünig, S. Tetrahedron Lett. 1972, 4831-4834. (g) Lu, W.; Zheng, G.; Aisa, H. A.; Cai, J. Tetrahedron Lett. 1998, 39, 9521-9522. (h) Zheng, G.; Lu, W.; Cai, J. J. Nat. Prod. 1999, 62, 626-628. (i) Nishihara, Y.; Ikegashira, K.; Hirabayashi, K.; Ando, J.; Mori, A.; Hiyama, T. J. Org. Chem. 2000, 65, 1780-1787. (j) Nishihara, Y.; Ikegashira, K.; Mori, A.; Hiyama, T. Tetrahedron Lett. 1998, 39, 4075-4078. For another example of unsymmetrical triyne synthesis, see: Gardner, J. N.; Jones, E. R. H.; Leeming, P. R.; Stephenson, J. S. J. Chem. Soc. 1960, 691-697.
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For other examples of unsymmetrical diyne syntheses, see: (a) Alami, M.; Ferri, F. Tetrahedron Lett. 1996, 37, 2763-2766. (b) Kwon, J. H.; Lee, S. T.; Shim, S. C.; Hoshino, M. J. Org. Chem. 1994, 59, 1108-1114. (c) Aitken, R. A.; Seth, S. J. Chem. Soc., Perkin Trans. 1 1994, 2461-2466. (d) Blanco, L.; Helson, H. E.; Hirthammer, M.; Mestdagh, H.; Spyroudis, S.; Vollhardt, K. P. C. Angew. Chem., Int. Ed. Engl. 1987, 26, 1246-1247. (e) Ziegler, C. B., Jr.; Harris, S. M.; Baldwin, J. E. J. Org. Chem. 1987, 52, 443-446. (f) Fritzsche, U.; Hünig, S. Tetrahedron Lett. 1972, 4831-4834. (g) Lu, W.; Zheng, G.; Aisa, H. A.; Cai, J. Tetrahedron Lett. 1998, 39, 9521-9522. (h) Zheng, G.; Lu, W.; Cai, J. J. Nat. Prod. 1999, 62, 626-628. (i) Nishihara, Y.; Ikegashira, K.; Hirabayashi, K.; Ando, J.; Mori, A.; Hiyama, T. J. Org. Chem. 2000, 65, 1780-1787. (j) Nishihara, Y.; Ikegashira, K.; Mori, A.; Hiyama, T. Tetrahedron Lett. 1998, 39, 4075-4078. For another example of unsymmetrical triyne synthesis, see: Gardner, J. N.; Jones, E. R. H.; Leeming, P. R.; Stephenson, J. S. J. Chem. Soc. 1960, 691-697.
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For other examples of unsymmetrical diyne syntheses, see: (a) Alami, M.; Ferri, F. Tetrahedron Lett. 1996, 37, 2763-2766. (b) Kwon, J. H.; Lee, S. T.; Shim, S. C.; Hoshino, M. J. Org. Chem. 1994, 59, 1108-1114. (c) Aitken, R. A.; Seth, S. J. Chem. Soc., Perkin Trans. 1 1994, 2461-2466. (d) Blanco, L.; Helson, H. E.; Hirthammer, M.; Mestdagh, H.; Spyroudis, S.; Vollhardt, K. P. C. Angew. Chem., Int. Ed. Engl. 1987, 26, 1246-1247. (e) Ziegler, C. B., Jr.; Harris, S. M.; Baldwin, J. E. J. Org. Chem. 1987, 52, 443-446. (f) Fritzsche, U.; Hünig, S. Tetrahedron Lett. 1972, 4831-4834. (g) Lu, W.; Zheng, G.; Aisa, H. A.; Cai, J. Tetrahedron Lett. 1998, 39, 9521-9522. (h) Zheng, G.; Lu, W.; Cai, J. J. Nat. Prod. 1999, 62, 626-628. (i) Nishihara, Y.; Ikegashira, K.; Hirabayashi, K.; Ando, J.; Mori, A.; Hiyama, T. J. Org. Chem. 2000, 65, 1780-1787. (j) Nishihara, Y.; Ikegashira, K.; Mori, A.; Hiyama, T. Tetrahedron Lett. 1998, 39, 4075-4078. For another example of unsymmetrical triyne synthesis, see: Gardner, J. N.; Jones, E. R. H.; Leeming, P. R.; Stephenson, J. S. J. Chem. Soc. 1960, 691-697.
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83
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For other examples of unsymmetrical diyne syntheses, see: (a) Alami, M.; Ferri, F. Tetrahedron Lett. 1996, 37, 2763-2766. (b) Kwon, J. H.; Lee, S. T.; Shim, S. C.; Hoshino, M. J. Org. Chem. 1994, 59, 1108-1114. (c) Aitken, R. A.; Seth, S. J. Chem. Soc., Perkin Trans. 1 1994, 2461-2466. (d) Blanco, L.; Helson, H. E.; Hirthammer, M.; Mestdagh, H.; Spyroudis, S.; Vollhardt, K. P. C. Angew. Chem., Int. Ed. Engl. 1987, 26, 1246-1247. (e) Ziegler, C. B., Jr.; Harris, S. M.; Baldwin, J. E. J. Org. Chem. 1987, 52, 443-446. (f) Fritzsche, U.; Hünig, S. Tetrahedron Lett. 1972, 4831-4834. (g) Lu, W.; Zheng, G.; Aisa, H. A.; Cai, J. Tetrahedron Lett. 1998, 39, 9521-9522. (h) Zheng, G.; Lu, W.; Cai, J. J. Nat. Prod. 1999, 62, 626-628. (i) Nishihara, Y.; Ikegashira, K.; Hirabayashi, K.; Ando, J.; Mori, A.; Hiyama, T. J. Org. Chem. 2000, 65, 1780-1787. (j) Nishihara, Y.; Ikegashira, K.; Mori, A.; Hiyama, T. Tetrahedron Lett. 1998, 39, 4075-4078. For another example of unsymmetrical triyne synthesis, see: Gardner, J. N.; Jones, E. R. H.; Leeming, P. R.; Stephenson, J. S. J. Chem. Soc. 1960, 691-697.
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Mori, A.5
Hiyama, T.6
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84
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For other examples of unsymmetrical diyne syntheses, see: (a) Alami, M.; Ferri, F. Tetrahedron Lett. 1996, 37, 2763-2766. (b) Kwon, J. H.; Lee, S. T.; Shim, S. C.; Hoshino, M. J. Org. Chem. 1994, 59, 1108-1114. (c) Aitken, R. A.; Seth, S. J. Chem. Soc., Perkin Trans. 1 1994, 2461-2466. (d) Blanco, L.; Helson, H. E.; Hirthammer, M.; Mestdagh, H.; Spyroudis, S.; Vollhardt, K. P. C. Angew. Chem., Int. Ed. Engl. 1987, 26, 1246-1247. (e) Ziegler, C. B., Jr.; Harris, S. M.; Baldwin, J. E. J. Org. Chem. 1987, 52, 443-446. (f) Fritzsche, U.; Hünig, S. Tetrahedron Lett. 1972, 4831-4834. (g) Lu, W.; Zheng, G.; Aisa, H. A.; Cai, J. Tetrahedron Lett. 1998, 39, 9521-9522. (h) Zheng, G.; Lu, W.; Cai, J. J. Nat. Prod. 1999, 62, 626-628. (i) Nishihara, Y.; Ikegashira, K.; Hirabayashi, K.; Ando, J.; Mori, A.; Hiyama, T. J. Org. Chem. 2000, 65, 1780-1787. (j) Nishihara, Y.; Ikegashira, K.; Mori, A.; Hiyama, T. Tetrahedron Lett. 1998, 39, 4075-4078. For another example of unsymmetrical triyne synthesis, see: Gardner, J. N.; Jones, E. R. H.; Leeming, P. R.; Stephenson, J. S. J. Chem. Soc. 1960, 691-697.
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Nishihara, Y.1
Ikegashira, K.2
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Hiyama, T.4
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85
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37049054940
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For other examples of unsymmetrical diyne syntheses, see: (a) Alami, M.; Ferri, F. Tetrahedron Lett. 1996, 37, 2763-2766. (b) Kwon, J. H.; Lee, S. T.; Shim, S. C.; Hoshino, M. J. Org. Chem. 1994, 59, 1108-1114. (c) Aitken, R. A.; Seth, S. J. Chem. Soc., Perkin Trans. 1 1994, 2461-2466. (d) Blanco, L.; Helson, H. E.; Hirthammer, M.; Mestdagh, H.; Spyroudis, S.; Vollhardt, K. P. C. Angew. Chem., Int. Ed. Engl. 1987, 26, 1246-1247. (e) Ziegler, C. B., Jr.; Harris, S. M.; Baldwin, J. E. J. Org. Chem. 1987, 52, 443-446. (f) Fritzsche, U.; Hünig, S. Tetrahedron Lett. 1972, 4831-4834. (g) Lu, W.; Zheng, G.; Aisa, H. A.; Cai, J. Tetrahedron Lett. 1998, 39, 9521-9522. (h) Zheng, G.; Lu, W.; Cai, J. J. Nat. Prod. 1999, 62, 626-628. (i) Nishihara, Y.; Ikegashira, K.; Hirabayashi, K.; Ando, J.; Mori, A.; Hiyama, T. J. Org. Chem. 2000, 65, 1780-1787. (j) Nishihara, Y.; Ikegashira, K.; Mori, A.; Hiyama, T. Tetrahedron Lett. 1998, 39, 4075-4078. For another example of unsymmetrical triyne synthesis, see: Gardner, J. N.; Jones, E. R. H.; Leeming, P. R.; Stephenson, J. S. J. Chem. Soc. 1960, 691-697.
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For a preliminary account of these results, see: Chernick, E. T.; Eisler, S.; Tykwinski, R. R. Tetrahedron Lett. 2001, 42, 8575-8578.
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A similar route has been utilized by others; inter alia, see: (a) Brown, R. F. C.; Jackson, W. R.; McCarthy, T. D. Tetrahedron 1994, 50, 5469-5488. (b) Baldoli, C.; Del Buttero, P.; Licandro, E.; Maiorana, S.; Papagni, A.; Torchio, M. Tetrahedron Lett. 1993, 34, 7943-7946.
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A similar route has been utilized by others; inter alia, see: (a) Brown, R. F. C.; Jackson, W. R.; McCarthy, T. D. Tetrahedron 1994, 50, 5469-5488. (b) Baldoli, C.; Del Buttero, P.; Licandro, E.; Maiorana, S.; Papagni, A.; Torchio, M. Tetrahedron Lett. 1993, 34, 7943-7946.
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(e) Anthony, J.; Boldi, A. M.; Rubin, Y.; Hobi, M.; Gramlich, V.; Knobler, C. B.; Seiler, P.; Diederich, F. Helv. Chim. Acta 1995, 78, 13-45.
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A recent report offers one potential solution to this problem; see: Rezaei, H.; Normant, J. F. Synthesis 2000, 109.
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-
A full investigation of the mechanistic aspects of these reactions is under way and will be published in due course. Preliminary evidence suggests that collapse of the carbenoid intermediate is consistent with that expected on the basis of the results of Curtin and Bothner-By, which is to say that the group that is trans to the bromide atom in the intermediate 2 is the one that migrates; see: Curtin, D. Y.; Flynn, E. W.; Nystrom, R. F. J. Am. Chem. Soc. 1958, 90, 4599. Bothner-By, A. A. J. Am. Chem. Soc. 1955, 77, 3293. See also ref 20a.
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(1958)
J. Am. Chem. Soc.
, vol.90
, pp. 4599
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Curtin, D.Y.1
Flynn, E.W.2
Nystrom, R.F.3
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98
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0000321915
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See also ref 20a
-
A full investigation of the mechanistic aspects of these reactions is under way and will be published in due course. Preliminary evidence suggests that collapse of the carbenoid intermediate is consistent with that expected on the basis of the results of Curtin and Bothner-By, which is to say that the group that is trans to the bromide atom in the intermediate 2 is the one that migrates; see: Curtin, D. Y.; Flynn, E. W.; Nystrom, R. F. J. Am. Chem. Soc. 1958, 90, 4599. Bothner-By, A. A. J. Am. Chem. Soc. 1955, 77, 3293. See also ref 20a.
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(1955)
J. Am. Chem. Soc.
, vol.77
, pp. 3293
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-
Bothner-By, A.A.1
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99
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0013378367
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note
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Using TLC to monitor these reactions is problematic, as warming of the sample in the capillary tube used for TLC application can lead to the inaccurate observation that the reaction has reached completion.
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-
-
-
100
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0013373054
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-
note
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Experimental evidence suggests that lithium-halogen exchange is faster than quenching of the BuLi by adventitious water in the reaction medium. As a result, any water that is present results in protonation of the carbenoid intermediate, which severely complicates purification due to very similar retention times on chromatographic supports.
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-
-
-
101
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84859924176
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The low yield for 8c results from the presence of the o-alkoxy substituent; see: Köbrich, G.; Trapp, H. Chem. Ber. 1966, 99, 680-688.
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(1966)
Chem. Ber.
, vol.99
, pp. 680-688
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-
Köbrich, G.1
Trapp, H.2
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103
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0032510457
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(b) Suzuki, R.; Tsukuda, H.; Watanabe, N.; Kuwatani, Y.; Ueda, I. Tetrahedron 1998, 54, 2477-2496.
-
(1998)
Tetrahedron
, vol.54
, pp. 2477-2496
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-
Suzuki, R.1
Tsukuda, H.2
Watanabe, N.3
Kuwatani, Y.4
Ueda, I.5
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104
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0013326086
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Patai, S., Ed.; John Wiley and Sons, New York
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Shirakawa, H.; Masuda, T.; Takeda, K. In The Chemistry of Triple-bonded Functional Groups; Patai, S., Ed.; John Wiley and Sons: New York, 1994; Vol. 2, Suppl. 2, pp 992-994.
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(1994)
The Chemistry of Triple-bonded Functional Groups
, vol.2
, Issue.SUPPL. 2
, pp. 992-994
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-
Shirakawa, H.1
Masuda, T.2
Takeda, K.3
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105
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0013379308
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note
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The general experimental details and characterization for all alcohols, ketones, and dibromoolefin precursors are detailed in the Supporting Information.
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