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0001071115
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Kelly, S.E.1
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34
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33748247321
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These conditions are commonly used in Wadsworth-Emmons reactions, see: Clayden, J.; Warren, S. Angew. Chem., Int. Ed. Engl. 1996, 35, 241-270.
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35
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0242414329
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note
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31P NMR.
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-
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37
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0242582061
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note
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Abbreviations used: BHT = 2,6-di-tert-butyl-1-hydroxy toluene, DMF = N,N-dimethylformamide, DIC = 1,3-diisopropylcarbodiimide.
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39
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0242497551
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note
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Oxaphosphetane structures analogous to 9 have been isolated, some even by distillation. See refs 28 and 29.
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42
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0242666014
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note
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Chloroform was found to be the ideal solvent, see Supporting Information.
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-
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43
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0242414328
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A similar observation was reported for DCC: Kawashima, T.; Nakamura, M.; Nakajo, A.; Inamoto, N. Chem. Lett. 1994, 1843-1486.
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Kawashima, T.1
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44
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0242497550
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note
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3N or 2,6-di-tert-butyl-4-methyl-pyridine.
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45
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0242666013
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in press
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The mild saponification of orthogonal protective groups will be reported elsewhere. See: Reichwein, J. F.; Pagenkopf, B. L. J. Org. Chem. 2003, 68, in press.
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Reichwein, J.F.1
Pagenkopf, B.L.2
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0001031915
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Kawashima, T.; Ishii, T.; Inamoto, N.; Tokitoh, N.; Okazaki, R. Bull. Chem. Soc. Jpn. 1998, 71, 209-219.
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Okazaki, R.5
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48
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0037029844
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For general experimental details, see: Reichwein, J. F.; Iacono, S. T.; Pagenkopf, B. L. Tetrahedron 2002, 58, 3813-3822.
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Reichwein, J.F.1
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Pagenkopf, B.L.3
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