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1
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0004783218
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ed. T. Goto, Hirokawa, Tokyo
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K. Kondo, I. Tabushi, R. Noyori and S. Fujita, Carbenes, Ylides, Nitrenes and Benzynes, ed. T. Goto, Hirokawa, Tokyo, 1976.
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(1976)
Carbenes, Ylides, Nitrenes and Benzynes
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Kondo, K.1
Tabushi, I.2
Noyori, R.3
Fujita, S.4
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2
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0004816627
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The lifetimes of ethereal oxonium ylides are too short for them to be identified by spectroscopic methods. Therefore, their intermediacy has been demonstrated indirectly: (a) I. Naito, A. Oku, N. Ohtani, H. Tanimoto and H. Fujiwara, J. Chem. Soc., Perkin Trans. 2, 1996, 725;
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Naito, I.1
Oku, A.2
Ohtani, N.3
Tanimoto, H.4
Fujiwara, H.5
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3
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0029855674
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(b) T. Sueda, T. Nagaoka, S. Goto and M. Ochiai, J. Am. Chem. Soc., 1996, 118, 10141.
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Sueda, T.1
Nagaoka, T.2
Goto, S.3
Ochiai, M.4
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4
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0342787662
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For examples of intermolecular oxonium ylide formation, see: (a) H. Nozaki, H. Takaya and R. Noyori, Tetrahedron Lett., 1966, 7, 2563;
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(1966)
Tetrahedron Lett.
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Nozaki, H.1
Takaya, H.2
Noyori, R.3
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5
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0000208836
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(b) K. Friedrich, U. Jansen and W. Kirmse, Tetrahedron Lett., 1985, 26, 193;
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Tetrahedron Lett.
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Friedrich, K.1
Jansen, U.2
Kirmse, W.3
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7
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0040496327
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(d) G. A. Olah, H. Doggweiler and J. D. Felberg, J. Org. Chem., 1984, 49, 2116;
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J. Org. Chem.
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Olah, G.A.1
Doggweiler, H.2
Felberg, J.D.3
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8
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37049078702
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(e) M. S. Baird, A. G. W. Baxter, A. Hoorter and I. Jefferson, J. Chem. Soc., Perkin Trans. 1, 1991, 2575;
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(1991)
J. Chem. Soc., Perkin Trans. 1
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Baird, M.S.1
Baxter, A.G.W.2
Hoorter, A.3
Jefferson, I.4
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9
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33751390952
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(f) F. G. West, T. H. Eberlein and R. W. Tester, J. Org. Chem., 1992, 57, 3479;
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J. Org. Chem.
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West, F.G.1
Eberlein, T.H.2
Tester, R.W.3
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10
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0000017190
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(g) M. P. Doyle, J. H. Griffin, M. S. Chinn and D van Leusen, J. Org. Chem., 1984, 49, 1917;
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J. Org. Chem.
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Doyle, M.P.1
Griffin, J.H.2
Chinn, M.S.3
Van Leusen, D.4
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11
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0026340688
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(h) M. C. Pirrung, W. L. Brown, S. Rege and P. Laughton, J. Am. Chem. Soc., 1991, 113, 8561;
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J. Am. Chem. Soc.
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Pirrung, M.C.1
Brown, W.L.2
Rege, S.3
Laughton, P.4
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13
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0343657900
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For examples of intramolecular oxonium ylide formation, see: (a) J. S. Clark, A. G. Dossetter and W. G. Whittingham, Tetrahedron Lett., 1996, 37, 5603;
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(1996)
Tetrahedron Lett.
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Clark, J.S.1
Dossetter, A.G.2
Whittingham, W.G.3
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16
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0000590218
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A. Oku, S. Ohwaki and K. Kimura, Acta Chem. Scand., 1993, 47, 391.
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(1993)
Acta Chem. Scand.
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Oku, A.1
Ohwaki, S.2
Kimura, K.3
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20
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37049068726
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(b) M. J. Davies, C. J. Heslin and C. J. Moody, J. Chem. Soc., Perkin Trans. 1, 1989, 2473;
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J. Chem. Soc., Perkin Trans. 1
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Davies, M.J.1
Heslin, C.J.2
Moody, C.J.3
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22
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0002900280
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(a) A. Oku, S. Ohki, T. Yoshida and K. Kimura, Chem. Commun., 1996, 1077;
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(1996)
Chem. Commun.
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Oku, A.1
Ohki, S.2
Yoshida, T.3
Kimura, K.4
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23
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0000115015
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(b) A. Oku, N. Murai and J. Baird, J. Org. Chem., 1997, 62, 2123;
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J. Org. Chem.
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Oku, A.1
Murai, N.2
Baird, J.3
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24
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0041542270
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(c) T. Kamada, Ge-Quin, M. Abe and A. Oku, J. Chem. Soc., Perkin Trans. 1, 1996, 413.
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(1996)
J. Chem. Soc., Perkin Trans. 1
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Kamada, T.1
Ge-Quin2
Abe, M.3
Oku, A.4
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25
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33750266079
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Other diazomethylation reagents such as diazomethyl(trimethyl)-silane in combination with n-BuLi were not successful for this purpose
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Other diazomethylation reagents such as diazomethyl(trimethyl)-silane in combination with n-BuLi were not successful for this purpose.
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26
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33947293559
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For the standard procedure of diazomethylation, see: (a) D. Seyferth, R. S. Marmor and P. Hilbert, J. Org. Chem., 1971, 36, 1379;
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Seyferth, D.1
Marmor, R.S.2
Hilbert, P.3
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29
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0000500403
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(d) J. C. Gilbert, D. H. Giamalva and U. Weerasooriya, J. Org. Chem., 1983, 48, 5251;
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Gilbert, J.C.1
Giamalva, D.H.2
Weerasooriya, U.3
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31
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37049090401
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(f) S. Ohira, K. Okai and T. Moritani, J. Chem. Soc., Chem. Commun., 1992, 721.
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(1992)
J. Chem. Soc., Chem. Commun.
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Ohira, S.1
Okai, K.2
Moritani, T.3
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32
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33750230039
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MeOH was used as a protic nucleopnile to trap the ylide
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MeOH was used as a protic nucleopnile to trap the ylide.
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33
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33750274849
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note
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5O, 3%) was obtained, which was presumed to be formed from oxonium ylide of 3a with diethyl ether.
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34
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33750243772
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8a was treated with DAMP and t-BuOK in diethyl ether under similar reaction conditions, an isomeric mix of ethereal products 24 (isomer ratio = 2.5) was isolated in 78% yield. For spectral data of 24, see the Experimental section. (Chemical Equation Presented)
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8a was treated with DAMP and t-BuOK in diethyl ether under similar reaction conditions, an isomeric mix of ethereal products 24 (isomer ratio = 2.5) was isolated in 78% yield. For spectral data of 24, see the Experimental section. (Chemical Equation Presented)
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35
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33750251074
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Isolated diene 16a was treated independently over silica gel and was shown to be intact under the same conditions
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Isolated diene 16a was treated independently over silica gel and was shown to be intact under the same conditions.
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36
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0003298434
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Two configurations, cis,cis and cis,trans, have been reported for cycloocta-1,3-diene and cyclodeca-1,3-diene, respectively. (a) W. J. Leigh, K. Zheng, N. Nguyen, N. H. Werstiuk and J. Ma, J. Am. Chem. Soc., 1991, 113, 4993;
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J. Am. Chem. Soc.
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Leigh, W.J.1
Zheng, K.2
Nguyen, N.3
Werstiuk, N.H.4
Ma, J.5
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38
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0028922404
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They presumed that 2-cyanopropionate could be formed from pyruvate via the corresponding azines of diazoalkene [eqn. (9)]. (Chemical Equation Presented)
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S. Ohira, I. Noda, T. Mizobata and M. Yamato, Tetrahedron Lett., 1995, 36, 3375. They presumed that 2-cyanopropionate could be formed from pyruvate via the corresponding azines of diazoalkene [eqn. (9)]. (Chemical Equation Presented)
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(1995)
Tetrahedron Lett.
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Ohira, S.1
Noda, I.2
Mizobata, T.3
Yamato, M.4
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39
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0003084553
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T. Shono, Y. Matsumura, O. Onomura and Y. Yamada, Synthesis, 1987, 1099.
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(1987)
Synthesis
, pp. 1099
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Shono, T.1
Matsumura, Y.2
Onomura, O.3
Yamada, Y.4
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40
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14844353342
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R. Bihovsky, M. U. Kumar, S. Ding and A. Goyal, J. Org. Chem., 1989, 54, 4291.
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J. Org. Chem.
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Bihovsky, R.1
Kumar, M.U.2
Ding, S.3
Goyal, A.4
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44
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0345150781
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M. Bertrand, G. Leandri and A. Meou, Tetrahedron, 1981, 37, 1703.
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(1981)
Tetrahedron
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Bertrand, M.1
Leandri, G.2
Meou, A.3
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