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1
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For recent reviews of 4 + 3 cycloaddition chemistry, see: (a) Harmata, M. Tetrahedron 1997, 53, 6235.
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Harmata, M.1
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0001974559
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Lautens, M., Ed.; JAI: Greenwich
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(b) Harmata, M. In Advances in Cycloaddition; Lautens, M., Ed.; JAI: Greenwich, 1997; Vol. 4, pp 41-86.
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Harmata, M.1
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Harmata, M.; Elahmad, S.; Barnes, C. L. J. Org. Chem. 1994, 59, 1241.
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(a) West, F. G.; Hartke-Karger, C.; Koch, D. J.; Kuehn, C. E.; Arif, A. M. J. Org. Chem. 1993, 58, 6795.
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(b) Wang, Y.; Arif, A. M.; West, F. G. J. Am. Chem. Soc. 1999, 121, 876.
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Wang, Y.1
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Harmata, M.; Elomari, S.; Barnes, C. L. J. Am. Chem. Soc. 1996, 118, 2860.
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For some examples, see refs 1e and 3 and the following: (a) Hoffmann, H. M. R.; Wagner, D.; Wartchow, R. Chem. Ber. 1990, 123, 2131.
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Wartchow, R.3
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(d) Hirano, T.; Kumagai, T.; Miyashi, T.; Akiyama, K.; Ikegami, Y. J. Org. Chem. 1991, 56, 1907.
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(d) Gadwood, R. C.; Lett, R. M.; Wissinger, J. E. J. Am. Chem. Soc. 1986, 108, 6343.
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(e) Feldman, K. S.; Wu, M.-J.; Rotella, D. P. J. Am. Chem. Soc. 1990, 112, 8490.
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24
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0040340191
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note
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Diene 11 was prepared using Evans' oxazolidinone chemistry. Details will be reported elsewhere.
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29
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0039155689
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note
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The ratio was determined by integration of the olefinic region of a crude reaction mixture containing 8 and what appeared to be a single additional cycloadduct (500 MHz). This minor product has not been isolated or characterized.
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30
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0039748100
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note
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2, 0 °C-rt, 48 h, 53%; (d) peracetic acid/NaOAc, 9:1, AcOH, rt, 48 h, 31%; (e) MMPP, 4:1, DMF, rt, 48 h, 84%.
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33
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0015932247
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(b) Kienzle, F.; Holland, G. W.; Jernow, J. L.; Kwoh, S.; Rosen, P. J. Org. Chem. 1973, 38, 3440.
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J. Org. Chem.
, vol.38
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Kienzle, F.1
Holland, G.W.2
Jernow, J.L.3
Kwoh, S.4
Rosen, P.5
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