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3CN (see the Supporting Information)
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3CN (see the Supporting Information).
-
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33
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79958228525
-
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The use of a very strong base such as KtBuO (2 equiv) resulted in complete conversion after 4 h at RT, although with poor diastereoselectivity (syn/anti=76:24) and no asymmetric induction
-
The use of a very strong base such as KtBuO (2 equiv) resulted in complete conversion after 4 h at RT, although with poor diastereoselectivity (syn/anti=76:24) and no asymmetric induction.
-
-
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34
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78649975910
-
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Electric conductivities of various inorganic and organic bases, directly related to their ionization ability, has been measured in organic solvents to explain their different performance in metal-catalyzed cross-coupling reactions
-
Electric conductivities of various inorganic and organic bases, directly related to their ionization ability, has been measured in organic solvents to explain their different performance in metal-catalyzed cross-coupling reactions:, C.-T. Yang, Y. Fu, Y.-B. Huang, J. Yi, Q.-X. Guo, L. Liu, Angew. Chem. 2009, 121, 7534
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36
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-
79958220440
-
-
I loading from 5 mol % to 2.5 mol % (0.5 mmol scale) led to a slower reaction (12 h, RT) but still good yield (71 %), as well as good diastereo- (syn/anti=94:6) and enantiocontrol (91 % ee)
-
I loading from 5 mol % to 2.5 mol % (0.5 mmol scale) led to a slower reaction (12 h, RT) but still good yield (71 %), as well as good diastereo- (syn/anti=94:6) and enantiocontrol (91 % ee).
-
-
-
-
37
-
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79958186362
-
-
Screening of a number of other metal-chiral ligand combinations led to much poorer reactivity and/or diastero- and enantiocontrol, whereas tuning the steric and electronic properties of the glycinate pronucleophile by modification of the ester and imine moieties did not improve the results obtained with substrate 2 (see the Supporting Information for these studies). For the beneficial effect of altering the steric or electronic properties of the glycinate component in the reactivity and stereoselectivity, see
-
Screening of a number of other metal-chiral ligand combinations led to much poorer reactivity and/or diastero- and enantiocontrol, whereas tuning the steric and electronic properties of the glycinate pronucleophile by modification of the ester and imine moieties did not improve the results obtained with substrate 2 (see the Supporting Information for these studies). For the beneficial effect of altering the steric or electronic properties of the glycinate component in the reactivity and stereoselectivity, see
-
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41
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79958194790
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I-enolate complex as active nucleophile catalysts (see the Supporting Information for a tentative stereochemical model). For computational studies on this type of intermediate, see ref. [9 b]
-
I-enolate complex as active nucleophile catalysts (see the Supporting Information for a tentative stereochemical model). For computational studies on this type of intermediate, see ref. [9 b].
-
-
-
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42
-
-
79958238156
-
-
1: a=10.4954(3), b=13.5389(4), c=18.2447(5) Å) contains the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via
-
1: a=10.4954(3), b=13.5389(4), c=18.2447(5) Å) contains the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via.
-
-
-
-
43
-
-
79958212106
-
-
1: a=9.9427(3), b=16.9270(4), c=18.6029(5) Å) contains the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via
-
1: a=9.9427(3), b=16.9270(4), c=18.6029(5) Å) contains the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via.
-
-
-
-
44
-
-
79958184704
-
-
The stereochemistry of the products of type 7 was established by NMR spectroscopy and by correlation with a known derivative (see the Supporting Information)
-
The stereochemistry of the products of type 7 was established by NMR spectroscopy and by correlation with a known derivative (see the Supporting Information).
-
-
-
-
45
-
-
79958208363
-
-
This methodology has been recently described from racemic substrates
-
This methodology has been recently described from racemic substrates
-
-
-
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46
-
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42149122127
-
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For its application to the preparation of the indole framework of ambiguine G, see
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