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Heilmann, J, Brun, R, Mayr, S, Rali, T, Sticher, O. Phytochemistry 2001, 57, 1281-1285. The relative configurations assigned for aculeatins A and B were erroneously assigned from the initial paper (see ref 1a) and have been corrected by Marco and co-workers see ref 5a
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(b) Heilmann, J.; Brun, R.; Mayr, S.; Rali, T.; Sticher, O. Phytochemistry 2001, 57, 1281-1285. The relative configurations assigned for aculeatins A and B were erroneously assigned from the initial paper (see ref 1a) and have been corrected by Marco and co-workers (see ref 5a).
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For examples of acyclic 1,3-anti induction in Mukaiyama aldol coupling using BF3·OEt2 as Lewis acid, see (a) Evans, D. A, Trotter, B. W, Coleman, P. J, Côté, B, Dias, L. C, Rajapakse, H. A, Tyler, A. N. Tetrahedron 1999, 55, 8671-8726
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2 as Lewis acid, see (a) Evans, D. A.; Trotter, B. W.; Coleman, P. J.; Côté, B.; Dias, L. C.; Rajapakse, H. A.; Tyler, A. N. Tetrahedron 1999, 55, 8671-8726.
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2 involving a merge 1,2 and 1,3-induction, see Restorp, P.; Somfai, P. Org. Lett. 2005, 7, 893-895.
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2 involving a merge 1,2 and 1,3-induction, see Restorp, P.; Somfai, P. Org. Lett. 2005, 7, 893-895.
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34447330570
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19F NMR spectra (500 MHz and 472 MHz, respectively). In our hands and with both NMR techniques, only one isomer can be detected (see Supporting Information).
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19F NMR spectra (500 MHz and 472 MHz, respectively). In our hands and with both NMR techniques, only one isomer can be detected (see Supporting Information).
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1H NMR of the crude mixture.
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1H NMR of the crude mixture.
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For a recent characterization of a stable phenoxonium cation by crystal structure, see
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For a recent characterization of a stable phenoxonium cation by crystal structure, see Lee, S. B.; Willis, A. C.; Webster, R. D. J. Am. Chem. Soc. 2006, 128, 9332-9333.
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0034647499
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For interesting nitrogen versions of phenolic oxidation involving trapping of phenoxonium cation by sp2 or sp heteroatoms, see (a) Braun, N. A, Ousmer, M, Bray, J. D, Bouchu, D, Peters, K, Peters, E.-M, Ciufolini, M. A. J. Org. Chem. 2000, 65, 4397-4408
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2 or sp heteroatoms, see (a) Braun, N. A.; Ousmer, M.; Bray, J. D.; Bouchu, D.; Peters, K.; Peters, E.-M.; Ciufolini, M. A. J. Org. Chem. 2000, 65, 4397-4408.
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For the participation of a methoxy group as nucleophile for the synthesis of bis-spiroketal by trapping ring oxocarbenium species, see Li, Y, Zhou, F, Forsyth, C. J. Angew. Chem, Int. Ed. 2007, 46, 279-282
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For the participation of a methoxy group as nucleophile for the synthesis of bis-spiroketal by trapping ring oxocarbenium species, see Li, Y.; Zhou, F.; Forsyth, C. J. Angew. Chem., Int. Ed. 2007, 46, 279-282.
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