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3
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0004269715
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P. Renaud, M. P. Sibi, Eds, Wiley-VCH, Weinheim, Germany
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P. Renaud, M. P. Sibi, Eds., Radicals in Organic Synthesis (Wiley-VCH, Weinheim, Germany, 2001).
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(2001)
Radicals in Organic Synthesis
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4
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47749122232
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A. Berkessel, H. Gröger, Eds, Wiley-VCH, Weinheim, Germany
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A. Berkessel, H. Gröger, Eds., Asymmetric Organocatalysis: From Biomimetic Concepts to Applications in Asymmetric Synthesis (Wiley-VCH, Weinheim, Germany, 2005).
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(2005)
Asymmetric Organocatalysis: From Biomimetic Concepts to Applications in Asymmetric Synthesis
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6
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34247565955
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T. D. Beeson, A. Mastracchio, J. B. Hong, K. Ashton, D. W. C. MacMillan, Science 316, 582 (2007); published online 28 March 2007 (10.1126/science. 1142696).
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T. D. Beeson, A. Mastracchio, J. B. Hong, K. Ashton, D. W. C. MacMillan, Science 316, 582 (2007); published online 28 March 2007 (10.1126/science. 1142696).
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9
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-
53349114531
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-
A SOMO activation mechanism has also been reported for the a-oxidation of aldehydes (10).
-
A SOMO activation mechanism has also been reported for the a-oxidation of aldehydes (10).
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-
-
-
12
-
-
53349137716
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-
An intramolecular a-formyl alkylation has been reported 13
-
An intramolecular a-formyl alkylation has been reported (13).
-
-
-
-
14
-
-
53349093239
-
-
For a catalytic enantioselective alkylation of racemic α-bromoesters, see
-
For a catalytic enantioselective alkylation of racemic α-bromoesters, see (15).
-
, vol.15
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-
-
19
-
-
53349149263
-
-
- electrode (20).
-
- electrode (20).
-
-
-
-
21
-
-
53349158561
-
-
+ has previously been shown to reduce phenacyl bromide (22).
-
+ has previously been shown to reduce phenacyl bromide (22).
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-
-
-
24
-
-
53349122437
-
-
The possibility of direct one-electron reduction of the α-bromocarbonyl by the α-amino radical as a propagation step cannot be excluded
-
The possibility of direct one-electron reduction of the α-bromocarbonyl by the α-amino radical as a propagation step cannot be excluded.
-
-
-
-
25
-
-
53349158559
-
-
DFT calculations were performed with the use of B3LYP/6-311+G(2d,2p)// B3LYP/6-31G(d).
-
DFT calculations were performed with the use of B3LYP/6-311+G(2d,2p)// B3LYP/6-31G(d).
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-
-
-
26
-
-
53349083950
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A conformer that positions the enamine olefin toward the tert-butyl group was also found to be energetically relevant in these calculations. Because of the pseudo C2-symmetric nature of catalyst 6, this enamine conformer also exists with the Si face open and the Re face blocked in a manner similar to DFT-8.
-
A conformer that positions the enamine olefin toward the tert-butyl group was also found to be energetically relevant in these calculations. Because of the pseudo C2-symmetric nature of catalyst 6, this enamine conformer also exists with the Si face open and the Re face blocked in a manner similar to DFT-8.
-
-
-
-
27
-
-
53349114529
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-
Materials and methods are available as supporting material on Science Online.
-
Materials and methods are available as supporting material on Science Online.
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28
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53349136643
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-
4NCl.
-
4NCl.
-
-
-
-
30
-
-
53349083951
-
-
2+.
-
2+.
-
-
-
-
31
-
-
53349086009
-
-
We thank S. Bernhard for his assistance in performing quenching experiments, as well as many insightful discussions. Additionally, we thank T. J. Rainey for performing DFT calculations. Financial support was provided by the NIH General Medical Sciences (grant R01 GM078201-01-01) and gifts from Merck, Amgen, and Bristol-Myers Squibb. D.A.N. is grateful for a NIH National Service Research Award fellowship F32GM076816
-
We thank S. Bernhard for his assistance in performing quenching experiments, as well as many insightful discussions. Additionally, we thank T. J. Rainey for performing DFT calculations. Financial support was provided by the NIH General Medical Sciences (grant R01 GM078201-01-01) and gifts from Merck, Amgen, and Bristol-Myers Squibb. D.A.N. is grateful for a NIH National Service Research Award fellowship (F32GM076816).
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