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0345349094
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2 (n = 1, 88%; n = 2, 92%) (ref. 16).
-
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15
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0033582991
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2Ru=CHPh under preferred conditions for RCM (ref. 10) resulted only in dimerisation [44% (E : Z = 73 : 27), 61% based on recovered triene] arising from metathesis at the the terminal (monoalkylsubstituted) alkene. Very recently, Grubbs has reported an imidazolinylidine-Ru catalyst which may be more effective: Scholl, M.; Trnka, T. M.; Morgan, J. P.; Grubbs, R. H. Tetrahedron Lett. 1999, 40, 2247-2250.
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16
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0344486690
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13C NMR and microanalysis and/or high resolution mass spectrometry.
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18
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0031881549
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33751158544
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Takai, K.; Kakiuchi, T.; Kataoka, Y.; Utimoto, K. J. Org. Chem. 1994, 59, 2668-2670; Takai, K.; Kataoka, Y.; Miyai, J.; Okazoe, T.; Oshima, K.; Utimoto, K. Org. Synth. 1995, 73, 73-84.
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0345349087
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note
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2 requires M, 337.0665).
-
-
-
-
28
-
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0344917934
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note
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i) compared with alcohol 9 could arise during preparation and/or Cr(II)-coupling of the aldehyde 14.
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-
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29
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0032572904
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Hodgson, D. M.; Foley, A. M.; Lovell, P. J. Tetrahedron Lett. 1998, 39, 6419-6420.
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Hodgson, D.M.1
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0032482518
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For a recent demonstration of this strategy using aryl halides see: Grigg, R.; Sridharan, V.; York, M. Tetrahedron Lett. 1998, 39, 4139-4142.
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Grigg, R.1
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York, M.3
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