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43
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85030814319
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note
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The overall desired aldol reaction may be slightly higher-for simplicity of discussion, any remaining uncyclized seco-acid (0-8%) is not reported in Table 1
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-
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44
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85030813528
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note
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2 provided nearly quantitative yields of lactone 5a
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45
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0141743750
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S.K. Bagal, R.M. Adlington, J.E. Baldwin, R. Marquez, and A. Cowley Org. Lett. 5 2003 3049
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Bagal, S.K.1
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46
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0038180463
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S.K. Bagal, R.M. Adlington, R. Marquez, A.R. Cowley, and J.E. Baldwin Tetrahedron Lett. 44 2003 4993
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Bagal, S.K.1
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Baldwin, J.E.5
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47
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0004912526
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J.D. McCombs, J.W. Blunt, M.V. Chambers, M.H.G. Munro, and W.T. Robinson Tetrahedron 44 1988 1489
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Tetrahedron
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McCombs, J.D.1
Blunt, J.W.2
Chambers, M.V.3
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Robinson, W.T.5
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48
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0037015425
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This result is in agreement with other published work; for example, see: D.A. Evans, C.E. Masse, and J. Wu Org. Lett. 4 2002 3375 and references cited therein
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Org. Lett.
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Evans, D.A.1
Masse, C.E.2
Wu, J.3
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49
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85030813518
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note
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Experiments using as low as 5 mol % LA also provided good yield of 5a ; however, the ring-closing event was slower
-
-
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50
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85030815778
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note
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Using a Lewis acid/chiral ligand we have obtained 5d, without purification, in 79% ee; unpublished result
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