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78649601502
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For representative examples, see
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13
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78649593165
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2NH (1-5mol%) catalysis
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2NH (1-5mol%) catalysis.
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14
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67651102874
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As this work was ongoing, a Lewis acid-catalysed acylation/glycosylation sequence has been developed, see
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As this work was ongoing, a Lewis acid-catalysed acylation/glycosylation sequence has been developed, see:, Y. Yokoyama, T. Hanamoto, K. Suzuki, K. Shimizu, H. Furuno, J. Inanaga, Heterocycles 2009, 79, 967.
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15
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0028186224
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in:, (Ed.: D. Horton), Academic Press: San Diego, New York pp. For a recent review, see
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Schmidt, R.R.1
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64149130063
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24
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78649564401
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Details are given in the Supporting Information
-
Details are given in the Supporting Information.
-
-
-
-
25
-
-
78649556490
-
-
[8a].
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[8a].
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26
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28244432865
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R. Ben Othman, T. Bousquet, M. Othman, V. Dalla, Org. Lett. 2005, 7, 5335
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33646758214
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28
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78649553846
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2NH loading was not considered at that point
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2NH loading was not considered at that point.
-
-
-
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29
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78649533954
-
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Recently, Dixon and co-workers reported the heterogeneous variant of such an approach with two elegant site-isolated base- and acid-catalysed cascade transformations, see
-
Recently, Dixon and co-workers reported the heterogeneous variant of such an approach with two elegant site-isolated base- and acid-catalysed cascade transformations, see
-
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30
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58249105060
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34
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78649568406
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[14] being formed (see Supporting Information)
-
[14] being formed (see Supporting Information).
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-
-
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35
-
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78649576736
-
-
2 at room temperature
-
2 at room temperature.
-
-
-
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36
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78649541643
-
-
1HNMR and GC-MS analyses
-
1HNMR and GC-MS analyses.
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-
-
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37
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57349134538
-
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For a recent enantioselective transformation of a trichloroacetimidate substrate catalyzed by a chiral phosphoric acid, see
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For a recent enantioselective transformation of a trichloroacetimidate substrate catalyzed by a chiral phosphoric acid, see:, G. L. Hamilton, T. Kanai, D. F. Toste, J. Am. Chem. Soc. 2008, 130, 14984.
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For the activation of acyclic N(H)-alkoxycarbonyl N,O-acetals by chiral phosphoric acids, see M. Terada, K. Machioka, K. Sorimachi, Angew. Chem. 2009, 121, 2591
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46
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78649620780
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3CN within 1h
-
3CN within 1h.
-
-
-
-
47
-
-
78649625289
-
-
3CN probably assists the cation formation, as well known in catalytic cationic chemistry
-
3CN probably assists the cation formation, as well known in catalytic cationic chemistry.
-
-
-
-
48
-
-
77950245731
-
-
During the preparation of this manuscript, Fairbanks and co-workers described a chiral phosphoric acid-based catalytic approach to improve the inherent stereoselectivities of glycosylations using trichloroacetimidate sugar donors
-
During the preparation of this manuscript, Fairbanks and co-workers described a chiral phosphoric acid-based catalytic approach to improve the inherent stereoselectivities of glycosylations using trichloroacetimidate sugar donors:, D. J. Cox, M. D. Smith, A. J. Fairbanks, Org. Lett. 2010, 12, 1452-1455.
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Cox, D.J.1
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