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Takeuchi, T.7
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Takahashi, A.1
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(c) Takahashi, A.; Naganawa, H.; Ikeda, D.; Okami, Y. Tetrahedron 1991, 47, 3621. Total synthesis: Kende, A. S.; Liu, K.; Jos Brands, K. M. J. Am. Chem. Soc. 1995, 117, 10597.
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(a) Hodgson, D. M.; Thompson, A. J.; Wadman, S. Tetrahedron Lett. 1998, 39, 3357;
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(d) Curry, K.; Peet, M. J.; Magnuson, D. S. K.; McLennan, H. J. Med. Chem. 1988, 31, 864.
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9
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0030955088
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and references cited therein
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For a recent review, see: Wirth, T. Angew. Chem., Int. Ed. Engl. 1997, 36, 225, and references cited therein.
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Ohira, S.1
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11
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0000223506
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The singlet/triplet energy gap has been determined to be 48 kcal/mol for vinylidene carbene itself: Wu, C. J.; Carter, E. A. J. Phys. Chem. 1991, 95, 8352;
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(b) Gilbert, J. C.; Giamalva, D. H.; Baze, M. E. J. Org. Chem. 1985, 50, 2557.
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13
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0001676885
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but this also appears to be an under-developed area of research
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Doyle has recently shown that rhodium carbeniods can be used to generate nitrogen-bearing quaternary stereocentres: Doyle, M. P.; Kalinin, A. V. Synlett 1995, 1075, but this also appears to be an under-developed area of research.
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Synlett
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Doyle, M.P.1
Kalinin, A.V.2
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(a) Taber, D. F.; Han, Y; Incarvito, C. D.; Rheingold, A. L. J. Am. Chem. Soc. 1998, 120, 13285;
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Taber, D.F.1
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0027943820
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(b) Taber, D. F.; Meagley, R. P.; Walter, R. J. Org. Chem. 1994, 59, 6014;
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Taber, D.F.1
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16
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0029848404
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(c) Taber, D. F.; Meagley, R. P.; Doren, D. J. J. Org. Chem. 1996, 61, 5723.
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Taber, D.F.1
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18
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0009752022
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note
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The presence of NOE enhancements between both protons on the C1 hydroxymethylene group and the C3 proton of 16 confirmed the relative stereochemistry of this compound as shown below. (equation presented)
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-
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19
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0030565479
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Williams, L.; Zhang, Z.; Shoa, F; Carroll, P. J.; Joullié, M. M. Tetrahedron 1996, 52, 11673.
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Williams, L.1
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Joullié, M.M.5
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