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For a seminal paper in which the PRE was recognized see: (a) Fischer, H. J. Am. Chem. Soc. 1986, 108, 3925. (b) For the naming of the principle of PRE see: Daikh, B. E.; Finke, R. G. J. Am. Chem. Soc. 1992, 114, 2938. (c) For an excellent review on the PRE see: Fischer, H. Chem. Rev. 2001, 101, 3581. (d) For examples of PRE in organic synthesis see: Studer, A. Angew. Chem. Int. Ed. 2000, 39, 1108. (e) Wetter, C.; Jantos, K.; Woithe, K.; Studer, A. Org. Lett. 2003, 5, 2899. (f) Studer, A. Chem.-Eur. J. 2001, 7, 1159. (g) Leroi, C.; Fenet, B.; Couturier, J.-L.; Guerret, O.; Ciufolini, M. A. Org. Lett. 2003, 5, 1079. (h) Allen, A. D.; Fenwick, M. F.; Henry-Riyad, H.; Tidwell, T. T. J. Org. Chem. 2001, 66, 5759. (i) Wetter, C.; Studer, A. Chem. Commun. 2004, 174.
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For a seminal paper in which the PRE was recognized see: (a) Fischer, H. J. Am. Chem. Soc. 1986, 108, 3925. (b) For the naming of the principle of PRE see: Daikh, B. E.; Finke, R. G. J. Am. Chem. Soc. 1992, 114, 2938. (c) For an excellent review on the PRE see: Fischer, H. Chem. Rev. 2001, 101, 3581. (d) For examples of PRE in organic synthesis see: Studer, A. Angew. Chem. Int. Ed. 2000, 39, 1108. (e) Wetter, C.; Jantos, K.; Woithe, K.; Studer, A. Org. Lett. 2003, 5, 2899. (f) Studer, A. Chem.-Eur. J. 2001, 7, 1159. (g) Leroi, C.; Fenet, B.; Couturier, J.-L.; Guerret, O.; Ciufolini, M. A. Org. Lett. 2003, 5, 1079. (h) Allen, A. D.; Fenwick, M. F.; Henry-Riyad, H.; Tidwell, T. T. J. Org. Chem. 2001, 66, 5759. (i) Wetter, C.; Studer, A. Chem. Commun. 2004, 174.
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For a seminal paper in which the PRE was recognized see: (a) Fischer, H. J. Am. Chem. Soc. 1986, 108, 3925. (b) For the naming of the principle of PRE see: Daikh, B. E.; Finke, R. G. J. Am. Chem. Soc. 1992, 114, 2938. (c) For an excellent review on the PRE see: Fischer, H. Chem. Rev. 2001, 101, 3581. (d) For examples of PRE in organic synthesis see: Studer, A. Angew. Chem. Int. Ed. 2000, 39, 1108. (e) Wetter, C.; Jantos, K.; Woithe, K.; Studer, A. Org. Lett. 2003, 5, 2899. (f) Studer, A. Chem.-Eur. J. 2001, 7, 1159. (g) Leroi, C.; Fenet, B.; Couturier, J.-L.; Guerret, O.; Ciufolini, M. A. Org. Lett. 2003, 5, 1079. (h) Allen, A. D.; Fenwick, M. F.; Henry-Riyad, H.; Tidwell, T. T. J. Org. Chem. 2001, 66, 5759. (i) Wetter, C.; Studer, A. Chem. Commun. 2004, 174.
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For a seminal paper in which the PRE was recognized see: (a) Fischer, H. J. Am. Chem. Soc. 1986, 108, 3925. (b) For the naming of the principle of PRE see: Daikh, B. E.; Finke, R. G. J. Am. Chem. Soc. 1992, 114, 2938. (c) For an excellent review on the PRE see: Fischer, H. Chem. Rev. 2001, 101, 3581. (d) For examples of PRE in organic synthesis see: Studer, A. Angew. Chem. Int. Ed. 2000, 39, 1108. (e) Wetter, C.; Jantos, K.; Woithe, K.; Studer, A. Org. Lett. 2003, 5, 2899. (f) Studer, A. Chem.-Eur. J. 2001, 7, 1159. (g) Leroi, C.; Fenet, B.; Couturier, J.-L.; Guerret, O.; Ciufolini, M. A. Org. Lett. 2003, 5, 1079. (h) Allen, A. D.; Fenwick, M. F.; Henry-Riyad, H.; Tidwell, T. T. J. Org. Chem. 2001, 66, 5759. (i) Wetter, C.; Studer, A. Chem. Commun. 2004, 174.
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For a seminal paper in which the PRE was recognized see: (a) Fischer, H. J. Am. Chem. Soc. 1986, 108, 3925. (b) For the naming of the principle of PRE see: Daikh, B. E.; Finke, R. G. J. Am. Chem. Soc. 1992, 114, 2938. (c) For an excellent review on the PRE see: Fischer, H. Chem. Rev. 2001, 101, 3581. (d) For examples of PRE in organic synthesis see: Studer, A. Angew. Chem. Int. Ed. 2000, 39, 1108. (e) Wetter, C.; Jantos, K.; Woithe, K.; Studer, A. Org. Lett. 2003, 5, 2899. (f) Studer, A. Chem.-Eur. J. 2001, 7, 1159. (g) Leroi, C.; Fenet, B.; Couturier, J.-L.; Guerret, O.; Ciufolini, M. A. Org. Lett. 2003, 5, 1079. (h) Allen, A. D.; Fenwick, M. F.; Henry-Riyad, H.; Tidwell, T. T. J. Org. Chem. 2001, 66, 5759. (i) Wetter, C.; Studer, A. Chem. Commun. 2004, 174.
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23
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0035896265
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For a seminal paper in which the PRE was recognized see: (a) Fischer, H. J. Am. Chem. Soc. 1986, 108, 3925. (b) For the naming of the principle of PRE see: Daikh, B. E.; Finke, R. G. J. Am. Chem. Soc. 1992, 114, 2938. (c) For an excellent review on the PRE see: Fischer, H. Chem. Rev. 2001, 101, 3581. (d) For examples of PRE in organic synthesis see: Studer, A. Angew. Chem. Int. Ed. 2000, 39, 1108. (e) Wetter, C.; Jantos, K.; Woithe, K.; Studer, A. Org. Lett. 2003, 5, 2899. (f) Studer, A. Chem.-Eur. J. 2001, 7, 1159. (g) Leroi, C.; Fenet, B.; Couturier, J.-L.; Guerret, O.; Ciufolini, M. A. Org. Lett. 2003, 5, 1079. (h) Allen, A. D.; Fenwick, M. F.; Henry-Riyad, H.; Tidwell, T. T. J. Org. Chem. 2001, 66, 5759. (i) Wetter, C.; Studer, A. Chem. Commun. 2004, 174.
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For a seminal paper in which the PRE was recognized see: (a) Fischer, H. J. Am. Chem. Soc. 1986, 108, 3925. (b) For the naming of the principle of PRE see: Daikh, B. E.; Finke, R. G. J. Am. Chem. Soc. 1992, 114, 2938. (c) For an excellent review on the PRE see: Fischer, H. Chem. Rev. 2001, 101, 3581. (d) For examples of PRE in organic synthesis see: Studer, A. Angew. Chem. Int. Ed. 2000, 39, 1108. (e) Wetter, C.; Jantos, K.; Woithe, K.; Studer, A. Org. Lett. 2003, 5, 2899. (f) Studer, A. Chem.-Eur. J. 2001, 7, 1159. (g) Leroi, C.; Fenet, B.; Couturier, J.-L.; Guerret, O.; Ciufolini, M. A. Org. Lett. 2003, 5, 1079. (h) Allen, A. D.; Fenwick, M. F.; Henry-Riyad, H.; Tidwell, T. T. J. Org. Chem. 2001, 66, 5759. (i) Wetter, C.; Studer, A. Chem. Commun. 2004, 174.
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For a seminal paper in which the PRE was recognized see: (a) Fischer, H. J. Am. Chem. Soc. 1986, 108, 3925. (b) For the naming of the principle of PRE see: Daikh, B. E.; Finke, R. G. J. Am. Chem. Soc. 1992, 114, 2938. (c) For an excellent review on the PRE see: Fischer, H. Chem. Rev. 2001, 101, 3581. (d) For examples of PRE in organic synthesis see: Studer, A. Angew. Chem. Int. Ed. 2000, 39, 1108. (e) Wetter, C.; Jantos, K.; Woithe, K.; Studer, A. Org. Lett. 2003, 5, 2899. (f) Studer, A. Chem.-Eur. J. 2001, 7, 1159. (g) Leroi, C.; Fenet, B.; Couturier, J.-L.; Guerret, O.; Ciufolini, M. A. Org. Lett. 2003, 5, 1079. (h) Allen, A. D.; Fenwick, M. F.; Henry-Riyad, H.; Tidwell, T. T. J. Org. Chem. 2001, 66, 5759. (i) Wetter, C.; Studer, A. Chem. Commun. 2004, 174.
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7
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7 (b) Alajarín, M.; Vidal, A.; Tovar, F.; Ramírez de Arellano, M. C.; Cossío, F. P.; Arrieta, A.; Lecea, B. J. Org. Chem. 2000, 65, 3633. (c) Alajarín, M.; Vidal, A.; Ortín, M.-M. Synthesis 2002, 2393; and references cited therein.
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34
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Arrieta, A.6
Lecea, B.7
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35
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0036437455
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7 (b) Alajarín, M.; Vidal, A.; Tovar, F.; Ramírez de Arellano, M. C.; Cossío, F. P.; Arrieta, A.; Lecea, B. J. Org. Chem. 2000, 65, 3633. (c) Alajarín, M.; Vidal, A.; Ortín, M.-M. Synthesis 2002, 2393; and references cited therein.
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38
-
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3142746982
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-
note
-
2O: C, 74.90; H, 5.28; N, 6.99. Found: C, 74.76; H, 5.18; N, 7.08.
-
-
-
-
39
-
-
3142735217
-
-
note
-
Crystallographic data for the structure 10a have been deposited with the Cambridge Crystallographic Data Centre as supplementary publication number CCDC 229317. Copies of the data can be obtained on application to CCDC, 12 Union Road, Cambridge CB2 1EZ, UK (e-mail: deposit@ccdc.cam.ac.uk).
-
-
-
-
40
-
-
0035528865
-
-
For articles dealing with persistent nitrogen-centered radicals see: (a) Nakatsuji, M.; Miura, Y.; Teki, Y. J. Chem. Soc., Perkin Trans. 2 2001, 738. (b) Miura, Y.; Momoki, M.; Fuchikami, T.; Teki, Y.; Itoh, K.; Mizutani, H. J. Org. Chem. 1996, 61, 4300. (c) Roberts, J. R.; Ingold, K. U. J. Am. Chem. Soc. 1973, 95, 3228. (d) Griller, D.; Mendenhall, G. D.; van Hoof, W.; Ingold, K. U. J. Am. Chem. Soc. 1974, 96, 6068.
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J. Chem. Soc., Perkin Trans. 2
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Nakatsuji, M.1
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41
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0000455348
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For articles dealing with persistent nitrogen-centered radicals see: (a) Nakatsuji, M.; Miura, Y.; Teki, Y. J. Chem. Soc., Perkin Trans. 2 2001, 738. (b) Miura, Y.; Momoki, M.; Fuchikami, T.; Teki, Y.; Itoh, K.; Mizutani, H. J. Org. Chem. 1996, 61, 4300. (c) Roberts, J. R.; Ingold, K. U. J. Am. Chem. Soc. 1973, 95, 3228. (d) Griller, D.; Mendenhall, G. D.; van Hoof, W.; Ingold, K. U. J. Am. Chem. Soc. 1974, 96, 6068.
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42
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0001277929
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For articles dealing with persistent nitrogen-centered radicals see: (a) Nakatsuji, M.; Miura, Y.; Teki, Y. J. Chem. Soc., Perkin Trans. 2 2001, 738. (b) Miura, Y.; Momoki, M.; Fuchikami, T.; Teki, Y.; Itoh, K.; Mizutani, H. J. Org. Chem. 1996, 61, 4300. (c) Roberts, J. R.; Ingold, K. U. J. Am. Chem. Soc. 1973, 95, 3228. (d) Griller, D.; Mendenhall, G. D.; van Hoof, W.; Ingold, K. U. J. Am. Chem. Soc. 1974, 96, 6068.
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, pp. 3228
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Roberts, J.R.1
Ingold, K.U.2
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43
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0000339521
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For articles dealing with persistent nitrogen-centered radicals see: (a) Nakatsuji, M.; Miura, Y.; Teki, Y. J. Chem. Soc., Perkin Trans. 2 2001, 738. (b) Miura, Y.; Momoki, M.; Fuchikami, T.; Teki, Y.; Itoh, K.; Mizutani, H. J. Org. Chem. 1996, 61, 4300. (c) Roberts, J. R.; Ingold, K. U. J. Am. Chem. Soc. 1973, 95, 3228. (d) Griller, D.; Mendenhall, G. D.; van Hoof, W.; Ingold, K. U. J. Am. Chem. Soc. 1974, 96, 6068.
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Griller, D.1
Mendenhall, G.D.2
Van Hoof, W.3
Ingold, K.U.4
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