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Rappoport, Z, Liebman, J. F, Eds, John Wiley & Sons, Ltd, West Sussex, England, Chapter 9
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Fu, N.-Y.1
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Naturally Occurring Cyclobutanes
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Hudlicky, T, Ed, Elsevier Science Ltd, New York
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(a) Hansen, T. V.; Stenstrom, Y. Naturally Occurring Cyclobutanes. In Organic Synthesis Theory and Applications; Hudlicky, T., Ed.; Elsevier Science Ltd.: New York, 2001; Vol. 5, pp 1-38.
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Hansen, T.V.1
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58149196790
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Rappoport, Z, Liebman, J. F, Eds, John Wiley & Sons, Ltd, West Sussex, England, Chapter 8
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Lee-Ruff, E. In The Chemistry of Cyclobutanes; Rappoport, Z.; Liebman, J. F., Eds.; John Wiley & Sons, Ltd.: West Sussex, England, 2005; Vol. 1, Chapter 8.
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58149201557
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For recent approaches limited to bicyclic adducts, see
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For recent approaches limited to bicyclic adducts, see:
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11
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35349012652
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Luzung, M. R.; Mauleon, P.; Toste, F. D. J. Am. Chem. Soc. 2007, 729, 12402-12403. See also:
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(b) Luzung, M. R.; Mauleon, P.; Toste, F. D. J. Am. Chem. Soc. 2007, 729, 12402-12403. See also:
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14
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0000489522
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Cyclopentanones: (a) Greene, A. E.; Charbonnier, F.; Luche, M.-J.; Moyano, A. J. Am. Chem. Soc. 1987, 709, 4752-4753.
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Cyclopentanones: (a) Greene, A. E.; Charbonnier, F.; Luche, M.-J.; Moyano, A. J. Am. Chem. Soc. 1987, 709, 4752-4753.
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15
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Kanazawa, A.1
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0026782629
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Lactones: (a) B. M. de Azevedo, M.; Murta, M. M.; Greene, A. E. J. Org. Chem. 1992, 57, 4567-4569.
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Lactones: (a) B. M. de Azevedo, M.; Murta, M. M.; Greene, A. E. J. Org. Chem. 1992, 57, 4567-4569.
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(b) Murta, M. M.; De Azevedo, M. B. M.; Greene, A. E. J. Org. Chem. 1993, 58, 7537-7541.
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Murta, M.M.1
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58149190428
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Pyrrolidinones: (a) Ncbois, P.; Greene, A. E. J. Org. Chem. 1996, 67, 5210-5211.
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Pyrrolidinones: (a) Ncbois, P.; Greene, A. E. J. Org. Chem. 1996, 67, 5210-5211.
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0032504134
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(c) Delair, P.; Brot. E.; Kanazawa. A.; Greene, A. E, J. Org. Chem. 1999, 64, 1383-1386.
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(d) Pourashraf, M.; Delair, P.; Rasmussen. M. O.; Greene, A. E. J. Org. Chem. 2000, 65, 6966-6972.
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(i) Roche, C; Kadlecikova, K.; Veyron, A.; Delair. P.; Philouze, C; Greene, A. E.; Fiot, D.; Burghammer, M. J. Org. Chem. 2005, 70, 8352-8363.
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For selected references, see: a
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For selected references, see: (a) Jeffs, P. W.; Molina. G.; Cass, M. W.; Cortege, N. A. J. Org. Chem. 1982, 47, 3871-3875.
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Paquette, L. A.; Heidelbaugh, T. M. Synthesis 1998, 495-508.
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(e) Paquette, L. A.; Heidelbaugh, T. M. Synthesis 1998, 495-508.
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34
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0030248667
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2707 2710, R, and (S)-Sterico1 [l-(2,4.6-triisopropylphenyl)ethanol] are now commercially available from Sigma-Aldrich
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Delair. P.; Kanazawa. A. M.; de Azevedo, M. B. M.; Greene, A. E. Tetrahedron: Asymmetry 1996, 7, 2707 2710. (R)- and (S)-Sterico1 [l-(2,4.6-triisopropylphenyl)ethanol] are now commercially available from Sigma-Aldrich.
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Tetrahedron: Asymmetry
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36
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58149192134
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The cis-eno! ethers were prepared from Stericol (52-71% yields) by the procedure described in ref 10.
-
The cis-eno! ethers were prepared from Stericol (52-71% yields) by the procedure described in ref 10.
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37
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58149192446
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2o (10 ml.) at 20 °C was added Zn-Cu (480 mg, 7.3 mmol), followed by trichloroacetyl chloride (0.11 ml, 1.0 mmol) dropwise over 30 min. A saturated solution of ammonium chloride in methanol (20 ml) was then added, and the resulting mixture was refluxed for 10 min. The crude product was isolated in the usual way and purified by flash chromatography on silica gel to afford cyclobutanone 3.
-
2o (10 ml.) at 20 °C was added Zn-Cu (480 mg, 7.3 mmol), followed by trichloroacetyl chloride (0.11 ml, 1.0 mmol) dropwise over 30 min. A saturated solution of ammonium chloride in methanol (20 ml) was then added, and the resulting mixture was refluxed for 10 min. The crude product was isolated in the usual way and purified by flash chromatography on silica gel to afford cyclobutanone 3.
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38
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58149180564
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Except for the cycloadditions of the benzyl- and allyl-substituted enol ethers lb and 1c. these cycloadditions have not been previously reported.
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Except for the cycloadditions of the benzyl- and allyl-substituted enol ethers lb and 1c. these cycloadditions have not been previously reported.
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40
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4544278000
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For a minireview. see
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(b) For a minireview. see: Gonda. J. Angew. Chem., Int. Ed. 2004, 43, 3516-3524.
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Gonda, J.1
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41
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0025895221
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(a) Bisacchi, G. S.; Braitman. A.; Cianci. C. W.; Clark, J. M.; Field, A. K.; Hagen. M. E.; Hockstein, D. R.; Malley. M. F.; Mitt, T.; Slusarchyk. W. A.; Sundeen, J. E.; Terry, B. J.; Tuomari, A. V.; Weaver, E. R.; Young, M. G.; Zaliler. R. J, Med. Chem. 1991, 34, 1415-1421.
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Terry, B.J.12
Tuomari, A.V.13
Weaver, E.R.14
Young, M.G.15
Zaliler, R.16
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42
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0029052190
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(b) Bisacchi, G. S.; Singh, J.; Godfrey, J. D., Jr.; Kissick, T. P.; Mitt, T.; Malley, M. F.; Di Marco, J. D.; Gougoutas. J. Z.; Mueller. R. H.; Zahler, R. J. Org. Chem.1995, 60, 2902-2905.
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(c) Singh, J.; Bisacchi, G. S.; Ahmad, S.; Godfrey, J. D., Jr.; Kissick, T. P.; Mitt, T.; Kocy, O.; Vu. T.; Papaioannou, C. G.; Wong, M. K.; Heikes. J. E.; Zahler, R.; Mueller, R. H. Org. Process Res. Dev. 1998, 2, 393-399.
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0033757127
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(e) Hanson, R. L.; Shi, Z.; Brzozowski, D. B.; Banerjee, A.; Kissick. T. P.; Singh, J.; Pullockaran, A. J.; North, J. T.; Fan, J.; Howell, J.; Durand, S. C; Montana. M. A.; Kronenthal, D. R.; Mueller, R. H.; Patel, R. N. Bioorg. Med. Chem. 2000, 8, 2681-2687.
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Hanson, R.L.1
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Patel, R.N.15
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46
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0023377503
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For additional references to this and related compounds, see
-
(a) Hoshino, FL; Shimizu, N.; Shimada, N.; Takita, T.; Takeuehi. T. J. Antibiot. 1987, 40, 1077-1078. For additional references to this and related compounds, see:
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(1987)
J. Antibiot
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Hoshino, F.L.1
Shimizu, N.2
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47
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34547174711
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(b) Rustullet, A.; Alibés, R.; de March, P.; Figueredo, M.; Font, J. Org. Lett. 2007, 9, 2827-2830.
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Rustullet, A.1
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Font, J.5
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48
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58149182872
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R (enantiomer) = 18.0 min.
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R (enantiomer) = 18.0 min.
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