-
1
-
-
0001617183
-
-
For recent discussions and diverse applications of this ubiquitous concept, see: (a) (b) Weinreb, S. M. Acc. Chem. Res. 1985, 18, 16. Kozikowski, A. P. Acc. Chem. Res. 1984, 17, 410. Magnus, P.; Gallagher, T.; Brown, P.; Pappalardo, P. Acc. Chem. Res. 1984, 17, 35. (c) Hibbert, F. Acc. Chem. Res. 1984, 17, 115. (d) Breslow, R. Acc. Chem. Res. 1980, 13, 170. (e) Mutterties, E. Chem. Soc. Rev. 1982, 11, 283. (f) Houk, K. N.; Paddon-Row, M. N.; Rondan, N. G.; Wu, Y. D.; Brown, F. K.; Spellmeyer, D. C.; Metz, J. T.; Li, Y.; Lancharich. Science 1986, 231, 1108. (g) Beak, P.; Ziegler, J. M. J. Org. Chem. 1981, 46, 614.
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For recent discussions and diverse applications of this ubiquitous concept, see: (a) Menger, F. M. Acc. Chem. Res. 1985, 18, 128. (b) Weinreb, S. M. Acc. Chem. Res. 1985, 18, 16. Kozikowski, A. P. Acc. Chem. Res. 1984, 17, 410. Magnus, P.; Gallagher, T.; Brown, P.; Pappalardo, P. Acc. Chem. Res. 1984, 17, 35. (c) Hibbert, F. Acc. Chem. Res. 1984, 17, 115. (d) Breslow, R. Acc. Chem. Res. 1980, 13, 170. (e) Mutterties, E. Chem. Soc. Rev. 1982, 11, 283. (f) Houk, K. N.; Paddon-Row, M. N.; Rondan, N. G.; Wu, Y. D.; Brown, F. K.; Spellmeyer, D. C.; Metz, J. T.; Li, Y.; Lancharich. Science 1986, 231, 1108. (g) Beak, P.; Ziegler, J. M. J. Org. Chem. 1981, 46, 614.
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Menger, F.M.1
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(a) Pergamon: Oxford (b) Meyers, A. I. Acc. Chem. Res. 1978, 11, 375.
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(a) Wakefield, B. J. Chemistry of Organolithium Compounds; Pergamon: Oxford, 1974. (b) Meyers, A. I. Acc. Chem. Res. 1978, 11, 375.
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(a) H. Gilman [Gilman, H.; Marten, J. W. Org. React. N.Y. 1954, 8, 258] credits Roberts and Curtin [Roberts, J. D.; Curtin, D. Y. J. Am. Chem. Soc. 1946, 68, 1658, for demonstrating this effect in ortho lithiations. (b) Klumpp, G. W. Rec. Trav. Chim. Pays-Bas 1986, 105, 1.
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(a) Gschwend, H. W.; Rodriquez, H. R. Org. React. (N.Y.) 1979, 26, 1. H. Gilman [Gilman, H.; Marten, J. W. Org. React. N.Y. 1954, 8, 258] credits Roberts and Curtin [Roberts, J. D.; Curtin, D. Y. J. Am. Chem. Soc. 1946, 68, 1658, for demonstrating this effect in ortho lithiations. (b) Klumpp, G. W. Rec. Trav. Chim. Pays-Bas 1986, 105, 1.
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4
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84986407392
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For recent examples and leading references, see: Jastrzebski, J. T. B. H.; van Koten, G.; Konijn, M.; Stem, C. H. J. Am. Chem. Soc. 1982, 104, 5490. Al-Aseer, M. A.; Allison, B. D.; Smith, S. G. J. Org. Chem. 1985, 50, 2715. Frankel, G.; Henrichs, M.; Hewitt, M.; Su, B. M. J. Am. Chem. Soc. 1984, 106, 255. Laube, T.; Dunitz, J. D.; Seebach, D. Helv. Chim. Acta 1985, 68, 1373. Jackman, L. M.; Scormoutzous, L. M. J. Am. Chem. Soc. 1984, 106, 4627. Buese, M. A.; Hogen-Eisch, T. E. Helv. Chim. Acta. 1985, 107, 4509. McGarrity, J. F.; Ogle, C. A.; Brich, Z.; Looli, H. R. Helv. Chim. Acta. 1985, 107, 1810. Kaufmann, E.; Clark, T.; Schleyer, P. v. R. J. Am. Chem. Soc. 1984, 106, 1856. Streitwieser, A., Jr. Acc. Chem. Res. 1984, 17, 353, and references cited therein.
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For recent examples and leading references, see: Amstuz, R.; Laube, T; Schweizer, W. B.; Seebach, D.; Dunitz, J. D. Helv. Chim. Acta 1984, 67, 224. Jastrzebski, J. T. B. H.; van Koten, G.; Konijn, M.; Stem, C. H. J. Am. Chem. Soc. 1982, 104, 5490. Al-Aseer, M. A.; Allison, B. D.; Smith, S. G. J. Org. Chem. 1985, 50, 2715. Frankel, G.; Henrichs, M.; Hewitt, M.; Su, B. M. J. Am. Chem. Soc. 1984, 106, 255. Laube, T.; Dunitz, J. D.; Seebach, D. Helv. Chim. Acta 1985, 68, 1373. Jackman, L. M.; Scormoutzous, L. M. J. Am. Chem. Soc. 1984, 106, 4627. Buese, M. A.; Hogen-Eisch, T. E. Helv. Chim. Acta. 1985, 107, 4509. McGarrity, J. F.; Ogle, C. A.; Brich, Z.; Looli, H. R. Helv. Chim. Acta. 1985, 107, 1810. Kaufmann, E.; Clark, T.; Schleyer, P. v. R. J. Am. Chem. Soc. 1984, 106, 1856. Streitwieser, A., Jr. Acc. Chem. Res. 1984, 17, 353, and references cited therein.
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Amstuz, R.1
Laube, T.2
Schweizer, W.B.3
Seebach, D.4
Dunitz, J.D.5
-
5
-
-
0000632657
-
-
a's of N,N-dimethylacetamide (34–35) and propene (44) from the work of Bordwell, Streitwieser, and Breslow.
-
a's of N,N-dimethylacetamide (34–35) and propene (44) from the work of Bordwell, Streitwieser, and Breslow.
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J. Am. Chem. Soc.
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Beak, P.1
Hunter, J.E.2
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6
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0042108173
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1984, 25, 2941.
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Meyers, A. I.; Pansegrau, P. D. Tetrahedron Lett. 1983, 24, 4935; 1984, 25, 2941.
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Meyers, A.I.1
Pansegrau, P.D.2
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8
-
-
85012569122
-
Complex-induced proximity effects have been or can be invoked for a wide variety of reactions. Many reactions of allylic alcohols are considered to demonstrate such an effect. Examples include cyclo- by the Simmonds-Smith reagent [Staroscik, J. D.; Rickborn, B. J. Org. Chem. 1972, 37, 738], hydroboration [House, H. Modern Synthetic Reaction; W. A. Benjamin: New York, 1972; pp 115–117] and, hydrogenations catalyzed by iridium and rhodium [Evans D. A.; Morrissey, M. M. J. Am. Chem. Soc. 1984, 106, 3866]. Regio- and stereospecific reductions and alkylations of double bonds are also recent synthetically useful examples. Gammill, R. B.; Bell, L. T.; Nash, S. A. J. Org. Chem. 1984, 49, 3039. Moret, E.; Schlosser, M. Tetrahedron Lett. 1985, 4423
-
Iron and palladium insertion into sites remote from the directing functionality also illustrate CIPE process. For examples, see: Groves, J. T.; Subramanian, D. V. J. Amer. Chem. Soc. 1984, 106, 2177, Heumann, A.; Backvall, J. E. Angew. Chem. Int. Ed. Engl. 1985, 24, 207. Baldwin, J. E.; Jones, R. H.; Najera, C.; Yus, M. Tetrahedron 1985, 41, 699. Perhaps the most dramatic current example is the gas-phase insertion of cobalt into a carbon-carbon bond, postulated to involve initial complexation with an proximate hydroxyl group, Tsarbopoulos, A.; allison, J. J. Am. Chem. Soc. 1985, 107, 5085
-
Complex-induced proximity effects have been or can be invoked for a wide variety of reactions. Many reactions of allylic alcohols are considered to demonstrate such an effect. Examples include cyclo- by the Simmonds-Smith reagent [Staroscik, J. D.; Rickborn, B. J. Org. Chem. 1972, 37, 738], hydroboration [House, H. Modern Synthetic Reaction; W. A. Benjamin: New York, 1972; pp 115–117] and, hydrogenations catalyzed by iridium and rhodium [Evans D. A.; Morrissey, M. M. J. Am. Chem. Soc. 1984, 106, 3866]. Regio- and stereospecific reductions and alkylations of double bonds are also recent synthetically useful examples. Gammill, R. B.; Bell, L. T.; Nash, S. A. J. Org. Chem. 1984, 49, 3039. Moret, E.; Schlosser, M. Tetrahedron Lett. 1985, 4423. Iron and palladium insertion into sites remote from the directing functionality also illustrate CIPE process. For examples, see: Groves, J. T.; Subramanian, D. V. J. Amer. Chem. Soc. 1984, 106, 2177, Heumann, A.; Backvall, J. E. Angew. Chem. Int. Ed. Engl. 1985, 24, 207. Baldwin, J. E.; Jones, R. H.; Najera, C.; Yus, M. Tetrahedron 1985, 41, 699. Perhaps the most dramatic current example is the gas-phase insertion of cobalt into a carbon-carbon bond, postulated to involve initial complexation with an proximate hydroxyl group, Tsarbopoulos, A.; allison, J. J. Am. Chem. Soc. 1985, 107, 5085.
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10
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0007821373
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(a) (b) Beak, P.; Monroe, E. M. J. Org, Chem. 1964, 34, 589. (c) Meyers, A. I.; Kunnen, K., unpublished results.
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(a) Beak, P.; Bonham, J. J. Am. Chem. Soc. 1965, 87, 3365. (b) Beak, P.; Monroe, E. M. J. Org, Chem. 1964, 34, 589. (c) Meyers, A. I.; Kunnen, K., unpublished results.
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Beak, P.1
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12
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46149140335
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For a more recent case and a suggestion of the importance of complexation, see: For an example in which a sulfone group is suggested to be involved in a similar reaction, see: Block, E.; Eswarakrishnan, V.; Gebreges, K. Tetrahedron Lett. 1984, 25, 5469.
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For a more recent case and a suggestion of the importance of complexation, see: Majewski, M.; Green, T. R.; Snieckus, V. Tetrahedron Lett. 1986, 27, 531. For an example in which a sulfone group is suggested to be involved in a similar reaction, see: Block, E.; Eswarakrishnan, V.; Gebreges, K. Tetrahedron Lett. 1984, 25, 5469.
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Majewski, M.1
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0001607457
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(a) 1984, 25, 1333. (b) Harris, F. L.; Weiler, L. J. Chem. Soc., Chem. Comm. 1985, 1124.
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(a) Harris, F. L.; Weiler, L. Tetrahedron Lett. 1985, 26, 1939; 1984, 25, 1333. (b) Harris, F. L.; Weiler, L. J. Chem. Soc., Chem. Comm. 1985, 1124.
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Beak, P.; Kempf, D. J.; Wilson, K. D. J. Am. Chem. Soc. 1985, 107, 4745.
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Beak, P.1
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Trost, B. M.; Vaultier, M.; Santiago, M. L. J. Am. Chem. Soc. 1980, 102, 7929.
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16
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85012475142
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Ekogha, C. B. B.; Ruel, O.; Julia, S. A. Tetrahedron Lett. 1983, 24, 4825, 4829.
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Ekogha, C.B.B.1
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17
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0011754220
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(a) (b) Townsend, C. A.; Bloom, L. M. Tetrahedron Lett. 1981, 22, 3923. Winkle, M. R.; Ronald, R. C. J. Org. Chem. 1982, 47, 2101; For a recent example on cyclohexenyl metalation see: Stork, G.; Shiner, C.; Cheng, C. W.; Polt, R. L. J. Am. Chem. Soc. 1986, 108, 304.
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(a) McDougal, P. G.; Rico, J. G. Tetrahedron Lett. 1984, 25, 5977. (b) Townsend, C. A.; Bloom, L. M. Tetrahedron Lett. 1981, 22, 3923. Winkle, M. R.; Ronald, R. C. J. Org. Chem. 1982, 47, 2101; For a recent example on cyclohexenyl metalation see: Stork, G.; Shiner, C.; Cheng, C. W.; Polt, R. L. J. Am. Chem. Soc. 1986, 108, 304.
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McDougal, P.G.1
Rico, J.G.2
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19
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0011979526
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Taylor, S. L.; Lee, D. Y.; Martin, J. C. J. Org. Chem. 1983, 43, 4158.
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Taylor, S.L.1
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20
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0001766999
-
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(a) (b) For a recent example of transient introduction of a complexing group in tetrahydroisoquinoline alkylations, see: Katritzky, A. R.; Akutagawa, K. Tetrahedron 1986, 42, 2571.
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(a) Comins, D. L.; Brown, J. D.; Mantlo, N. B. Tetrahedron Lett. 1982, 23, 3979. (b) For a recent example of transient introduction of a complexing group in tetrahydroisoquinoline alkylations, see: Katritzky, A. R.; Akutagawa, K. Tetrahedron 1986, 42, 2571.
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Comins, D.L.1
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-
21
-
-
0141732050
-
-
This technique was used earlier by Gschwend and co-workers for ortho metalation of N,N-dimethylbenzamides
-
This technique was used earlier by Gschwend and co-workers for ortho metalation of N,N-dimethylbenzamides. Barsky, L.; Gschwend, H. W.; McKenna, J.; Rodriquez, H. R. J. Org. Chem. 1976, 41, 3651.
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Barsky, L.1
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84982063429
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Klumpp, G. W.; Veerkind, A. H.; deGraff, W. L.; Bickelhaupt, F. Justus Liebigs Ann. Chem. 1967, 706, 46.
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28
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0006699143
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Cherest, M.; Felkin, H.; Frajerman, C.; Lion, C.; Roussi, G.; Swierczewski, G. Tetrahedron Lett. 1966, 875.
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Eisch, J. J.; Merkley, J. H.; Galle, J. E. J. Org. Chem. 1979, 44, 587.
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For a review, see
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For a review, see: Vara Prasad, J. V. N.; Pillai, C. N. J. Organometall. Chem. 1983, 259, 1.
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Richey, H. G., Jr; Heyn, A. S.; Erickson, W. F. J. Org. Chem. 1983, 48, 3821.
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85012468802
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(a) Oppolozer, W.; Heland, R. P. J. Am. Chem. Soc, 6478. (b) The reaction may occur with allyllithium reagents as well: Edwards, J. E.; McQuillin, W. H. J. Chem. Soc., Chem. Comm. 1977, 838.
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(a) Oppolozer, W.; Pitteloud, R.; Strauss, H. R. J. Am. Chem. Soc. 1982, 106, 6476. Oppolozer, W.; Heland, R. P. J. Am. Chem. Soc, 6478. (b) The reaction may occur with allyllithium reagents as well: Edwards, J. E.; McQuillin, W. H. J. Chem. Soc., Chem. Comm. 1977, 838.
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33845377548
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(a) For cases of normal Michael additions to secondary amides see: (b) Mpango, G. B.; Maha-lanabis, K. K.; Mahadavi-Damghani, Z.; Snieckus, V. Tetrahedron Lett. 1986, 21, 4823. (c) Kruthof, K. J. H.; Mateboer, A.; Schakel, M.; Klumpp, G. W. Recl. Trav. Chim. Pays-Bas 1986, 105, 63.
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(a) Klumpp, G. W.; Mierop, A. J. C.; Vrielink, J. J.; Brugman, A.; Schakel, M. J. Am. Chem. Soc. 1985, 107, 6740. For cases of normal Michael additions to secondary amides see: (b) Mpango, G. B.; Maha-lanabis, K. K.; Mahadavi-Damghani, Z.; Snieckus, V. Tetrahedron Lett. 1986, 21, 4823. (c) Kruthof, K. J. H.; Mateboer, A.; Schakel, M.; Klumpp, G. W. Recl. Trav. Chim. Pays-Bas 1986, 105, 63.
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0001190638
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Meyers, A. I.; Hanagan, M. A.; Trefonas, L. M.; Baker, R. J. Tetrahedron 1983, 39, 1991.
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42
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85012498675
-
Solid state and solution structures, which provide convincing evidence for complexation in ground states, can be extrapolated to effects in reactive species as strong but circumstantial support for mechanistic hypothesis. For a recent case, see: Laube, T.; Dunitz, J. D.; Seebach, D. Helv. Chim. Acta 1985, 98, 1373
-
Solid state and solution structures, which provide convincing evidence for complexation in ground states, can be extrapolated to effects in reactive species as strong but circumstantial support for mechanistic hypothesis. For a recent case, see: Laube, T.; Dunitz, J. D.; Seebach, D. Helv. Chim. Acta 1985, 98, 1373.
-
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43
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0001450810
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Beak, P.; Zajdel, W. J. J. Am. Chem. Soc. 1984, 106, 1010, and references cited therein.
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Wykypiel, W.; Lohmann, J.; Seebach, D. Helv. Chim. Acta 1981, 64, 1337; Beak, P.; Zajdel, W. J. J. Am. Chem. Soc. 1984, 106, 1010, and references cited therein.
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Wykypiel, W.1
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44
-
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0001294779
-
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(a) (b) Similar conclusions were drawn for α-lithio formamidines: Meyers, A. I.; Fuentes, L. M.; Rieker, W. F. J. Am. Chem. Soc. 1983, 105, 2082. (c) Fitt, J. J.; Gschwend, H. W. J. Org. Chem. 1984, 49, 209.
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(a) Al-Aseer, M.; Beak, P.; Hay, D.; Kempf, D. J.; Mills, S.; Smith, S. G. J. Am. Chem. Soc. 1983, 105, 2080. (b) Similar conclusions were drawn for α-lithio formamidines: Meyers, A. I.; Fuentes, L. M.; Rieker, W. F. J. Am. Chem. Soc. 1983, 105, 2082. (c) Fitt, J. J.; Gschwend, H. W. J. Org. Chem. 1984, 49, 209.
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45
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0000311992
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Rondan, N. G.; Houk, K. N.; Beak, P.; Zajdel, W. J.; Chandrasekhar, J.; Schleyer, P. V. R. J. Org. Chem. 1981, 46, 4316.
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Rondan, N.G.1
Houk, K.N.2
Beak, P.3
Zajdel, W.J.4
Chandrasekhar, J.5
Schleyer, P.V.R.6
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