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For Diels-Alder reactions of 8 and the stereochemistry: (a) Otani, T.; Takayama, J.; Sugihara, Y.; Ishii, A.; Nakayama, J. J Am Chem Soc 2003, 125, 8255; (b) Takayama, J.; Fukuda, S.; Sugihara, Y.; Ishii, A.; Nakayama, J. Tetrahedron Lett 2003, 44, 5159; (c) Nakayama, J. J Synth Org Chem Jpn 2003, 61, 1106.
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For Diels-Alder reactions of 8 and the stereochemistry: (a) Otani, T.; Takayama, J.; Sugihara, Y.; Ishii, A.; Nakayama, J. J Am Chem Soc 2003, 125, 8255; (b) Takayama, J.; Fukuda, S.; Sugihara, Y.; Ishii, A.; Nakayama, J. Tetrahedron Lett 2003, 44, 5159; (c) Nakayama, J. J Synth Org Chem Jpn 2003, 61, 1106.
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max 287 nm for 1-methoxycycloheptariene: Lindsay, D. G.; Reese, C. B. Tetrahedron 1965, 21, 1673.
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Marcel Dekker: New York, and references cited therein.
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For the cycloheptatriene-norcaradiene equilibrium, see le Noble, W. J. Highlights of Organic Chemistry; Marcel Dekker: New York, 1974, pp. 402-406 and references cited therein. Reportedly, the electron-withdrawing substituents at the C7 shift the equilibrium toward the norcaradiene isomer: (a) Hall, G. E.; Roberts, J. D. J Am Chem Soc 1971, 93, 2203; (b) Dürr, H.; Kaber, H. Angew Chem, Int Ed 1971, 10, 342.
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For the cycloheptatriene-norcaradiene equilibrium, see le Noble, W. J. Highlights of Organic Chemistry; Marcel Dekker: New York, 1974, pp. 402-406 and references cited therein. Reportedly, the electron-withdrawing substituents at the C7 shift the equilibrium toward the norcaradiene isomer: (a) Hall, G. E.; Roberts, J. D. J Am Chem Soc 1971, 93, 2203; (b) Dürr, H.; Kaber, H. Angew Chem, Int Ed 1971, 10, 342.
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84981928741
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For the cycloheptatriene-norcaradiene equilibrium, see le Noble, W. J. Highlights of Organic Chemistry; Marcel Dekker: New York, 1974, pp. 402-406 and references cited therein. Reportedly, the electron-withdrawing substituents at the C7 shift the equilibrium toward the norcaradiene isomer: (a) Hall, G. E.; Roberts, J. D. J Am Chem Soc 1971, 93, 2203; (b) Dürr, H.; Kaber, H. Angew Chem, Int Ed 1971, 10, 342.
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17644406863
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note
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Tetrachlorocyclopropene was purchased from Aldrich and used without further purification.
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23
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0012011602
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(b) Kurtz, A. N.; Billups, W. E.; Greenlee, R. B.; Hamil, H. F.; Pace, W. T. J Org Chem 1965, 30, 3141.
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Kurtz, A.N.1
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Pace, W.T.5
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33644886547
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Bruker AXS Inc., Madison, WI, USA
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Bruker, SMART version 5.630, Bruker AXS Inc., Madison, WI, USA (2003).
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SMART Version 5.630
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Bruker1
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17644390408
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Bruker AXS Inc., Madison, WI, USA
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Bruker, SAINT-Plus version 6.45, Bruker AXS Inc., Madison, WI, USA (2003).
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SAINT-plus Version 6.45
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Bruker1
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