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31
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63849209532
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2 as eluent.
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2 as eluent.
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32
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63849173298
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Spectroscopic Data for Tetrasubstituted Furans 2,3,4,5-Tetrakis(4- methoxyphenyl)furan13 Mp 206-208 °C. 1H NMR (400 MHz, CDCl3, 5, 3.78 (s, 12 H, 6.77 (d, J, 6.4 Hz, 4 H, 6.79 (d, J, 7.2 Hz, 4 H, 7.04 (d, J, 8.8 Hz, 4 H, 7.42 (d, J, 9.2 Hz, 4 H) ppm. 13CNMR(100 MHz,CDCl3, 5, 125.1, 125.8, 127.1, 127.3, 128.3, 128.5, 130.4, 130.9, 133.1, 147.7 ppm. MS (EI, 70 eV, m/z, 492 (28, M, 318 (100, 275 (31, 135 (47, 2,3,4,5-Tetrakis(4-fluorophenyl)furan14 1H NMR (400 MHz, CDCl3, 5, 6.93 (m, 8 H, 7.05-7.08 (m, 4 H, 7.41-7.44 (m, 4 H) ppm. 13C NMR (100 MHz, CDCl3, δ, 115.6 (t, J, 80 Hz, 123.5, 126.7, 127.6, 127.7, 128.6, 131.9, 147.1, 160.9, 163.4 ppm. MS (EI, 70 eV, m/z, 444 (100, M, 321 (73, 123 (69, 95 (55, 2,3,4,5-Tetrakis[4-(trifluoromethyl)phenyl]furan13
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+], 309 (21), 119 (65), 91 (18).
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33
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63849313259
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2 as eluent to give 2a in 72% yield.
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2 as eluent to give 2a in 72% yield.
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34
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63849325013
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+], 178 (9), 105 (100), 77 (43).
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35
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0000924930
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43449133582
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