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79751488583
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For "retrotransmetalation" we mean the exchange of an R on Pd for an X on Sn, the reverse of what happens in the so-called transmetalation.
-
For "retrotransmetalation" we mean the exchange of an R on Pd for an X on Sn, the reverse of what happens in the so-called transmetalation.
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33847088632
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For cases of oxidative addition to neutral Pd(0) complexes by a concerted mechanism see
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0037131506
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N2 see
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4229 See also ref 19a,19b.
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5 bond
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29744467659
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19F chemical shifts are very different from those in organic molecules:;;;;
-
19F chemical shifts are very different from those in organic molecules: Casares, J. A.; Espinet, P.; Martín-Alvarez, J. M.; Martínez-Ilarduya, J. M.; Salas, G. Eur. J. Inorg. Chem. 2005, 3825-3831
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36
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79751491056
-
-
Strictly it is not a true equilibrium because of the continuous and irreversible formation of complex 7.
-
Strictly it is not a true equilibrium because of the continuous and irreversible formation of complex 7.
-
-
-
-
37
-
-
79751502225
-
-
For the concentration used in catalysis, about 90% of the coupling product is formed in 3 h. The reaction has an induction time, which suggests that probably the reaction is initiated only after some phosphine oxidation favoring dissociation has occurred. This ligand dissociation can be compensated in the presence of other external coordinating species that exist under catalytic conditions (e.g., alkynyl in large excess). Thus, under the conditions of Figures 1 and 2 the coupling is less than 5% in 3 h.
-
For the concentration used in catalysis, about 90% of the coupling product is formed in 3 h. The reaction has an induction time, which suggests that probably the reaction is initiated only after some phosphine oxidation favoring dissociation has occurred. This ligand dissociation can be compensated in the presence of other external coordinating species that exist under catalytic conditions (e.g., alkynyl in large excess). Thus, under the conditions of Figures 1 and 2 the coupling is less than 5% in 3 h.
-
-
-
-
38
-
-
79751492126
-
-
3. See ref 21 for mechanistic details.
-
3. See ref 21 for mechanistic details.
-
-
-
-
39
-
-
79751492997
-
-
The value obtained is slightly different from the reported data, which has been attributed to the eventual presence of traces of ligand in the slowest system or to the partial oxidation of phosphine in the fastest reaction. (21)
-
The value obtained is slightly different from the reported data, which has been attributed to the eventual presence of traces of ligand in the slowest system or to the partial oxidation of phosphine in the fastest reaction. (21)
-
-
-
-
40
-
-
79751481552
-
-
5 for the same experiments. The values obtained are very similar (see the Supporting Information).
-
5 for the same experiments. The values obtained are very similar (see the Supporting Information).
-
-
-
-
41
-
-
0027370376
-
-
The multivariable adjustment program Gepasi was used:, See the Supporting Information for additional details.
-
The multivariable adjustment program Gepasi was used: Mendes, P. Comput. Appl. Biosci. 1993, 9, 563-571 See the Supporting Information for additional details.
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