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Alkylidene malonate 7 and β-ketoester 9 were prepared from hex5-ynal and dimethyl malonate by the Lehnert modification of the Knoevenagel condensation. Lehnert, W. Tetrahedron Lett. 1970, 4723
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(1970)
Tetrahedron Lett.
, pp. 4723
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Lehnert, W.1
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72
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0030603138
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Nitroalkene 11 was prepared from nitromethane and 5-hexyn-1-al by a nitroaldol condensation, acylation, and elimination sequence. Denmark, S. E.; Senanayake, C. B. W. Tetrahedron 1996, 52, 11579.
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(1996)
Tetrahedron
, vol.52
, pp. 11579
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Denmark, S.E.1
Senanayake, C.B.W.2
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73
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33751386387
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6-Trimethylsilylhex-5-ynal was employed as the aldehyde component in the Knoevenagel condensation (see ref 32) to prepare alkynyl silane 19. 6-Trimethylsilanylhex-5-yn-1-al was prepared from hex-5-yn-1-ol by bis-silylation, monodesilylation, and PCC oxidation. Harris, G. D.; Herr, R. J.; Weinreb, S. M. J. Org. Chem. 1993, 52, 5452.
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(1993)
J. Org. Chem.
, vol.52
, pp. 5452
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Harris, G.D.1
Herr, R.J.2
Weinreb, S.M.3
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74
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0011836283
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Montgomery, J.; Savchenko, A. V.; Zhao, Y. J. Org. Chem. 1995, 60, 5699.
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(1995)
J. Org. Chem.
, vol.60
, pp. 5699
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Montgomery, J.1
Savchenko, A.V.2
Zhao, Y.3
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75
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1842364936
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note
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The author has deposited atomic coordinates for 24 with the Cambridge Crystallographic Data Centre. The coordinates can be obtained, on request, from the Director, Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge, CB2 1EZ, UK.
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76
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0001362497
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Diene 27 was prepared by Wittig olefination of (E)-5,7-octadienal. (E)-5,7-Octadienal was prepared from 2,3-dihydropyran by α-alkylation (a), ring-opening (b), and Taber modified swern oxidation (c). (a) Margot, C.; Rizzolio, M.; Schlosser, M. Tetrahedron 1990, 46, 2411. (b) Viola, A.; Collins, J. J.; Fillip, N.; Locke, J. S. J. Org. Chem. 1993, 58, 5067. (c) Taber, D. F., Amedio Jr., J. C.; Jung, K-Y. J. Org. Chem. 1987, 52, 5621.
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(1990)
Tetrahedron
, vol.46
, pp. 2411
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Margot, C.1
Rizzolio, M.2
Schlosser, M.3
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77
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0011443238
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Diene 27 was prepared by Wittig olefination of (E)-5,7-octadienal. (E)-5,7-Octadienal was prepared from 2,3-dihydropyran by α-alkylation (a), ring-opening (b), and Taber modified swern oxidation (c). (a) Margot, C.; Rizzolio, M.; Schlosser, M. Tetrahedron 1990, 46, 2411. (b) Viola, A.; Collins, J. J.; Fillip, N.; Locke, J. S. J. Org. Chem. 1993, 58, 5067. (c) Taber, D. F., Amedio Jr., J. C.; Jung, K-Y. J. Org. Chem. 1987, 52, 5621.
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(1993)
J. Org. Chem.
, vol.58
, pp. 5067
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Viola, A.1
Collins, J.J.2
Fillip, N.3
Locke, J.S.4
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78
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0000857220
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Diene 27 was prepared by Wittig olefination of (E)-5,7-octadienal. (E)-5,7-Octadienal was prepared from 2,3-dihydropyran by α-alkylation (a), ring-opening (b), and Taber modified swern oxidation (c). (a) Margot, C.; Rizzolio, M.; Schlosser, M. Tetrahedron 1990, 46, 2411. (b) Viola, A.; Collins, J. J.; Fillip, N.; Locke, J. S. J. Org. Chem. 1993, 58, 5067. (c) Taber, D. F., Amedio Jr., J. C.; Jung, K-Y. J. Org. Chem. 1987, 52, 5621.
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(1987)
J. Org. Chem.
, vol.52
, pp. 5621
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Taber, D.F.1
Amedio Jr., J.C.2
Jung, K.-Y.3
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79
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0013591299
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Wiley: New York
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2-mediated ring opening and acylation, ester hydrolysis, and Taber-modified Swern oxidation (see ref 38c). (a) Synerholm, M. E. Organic Syntheses; Wiley: New York, 1955; Collect. Vol III, p 187. (b) Earl, H. A., Sterling, J. M. J. Chem. Soc., Perkin Trans. II 1987, 1273.
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(1955)
Organic Syntheses
, vol.3 COLLECT. VOL
, pp. 187
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Synerholm, M.E.1
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80
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37049069752
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2-mediated ring opening and acylation, ester hydrolysis, and Taber-modified Swern oxidation (see ref 38c). (a) Synerholm, M. E. Organic Syntheses; Wiley: New York, 1955; Collect. Vol III, p 187. (b) Earl, H. A., Sterling, J. M. J. Chem. Soc., Perkin Trans. II 1987, 1273.
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(1987)
J. Chem. Soc., Perkin Trans. II
, pp. 1273
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Earl, H.A.1
Sterling, J.M.2
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