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35
-
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0346556817
-
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note
-
Since TMS groups are not protective groups in the common sense, we prefer to use the term place holder, which precisely defines their function.
-
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37
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Wilkinson, G., Ed.; Pergamon: Oxford
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0347816989
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note
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Two-dimensional Heteronuclear Multiple Quantum Coherence NMR experiment.
-
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39
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0035780991
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For recent overviews on(accelerated) convergent methods, see: (a) Grayson, S. M.; Fréchet, J. M. J. Chem. Rev. 2001, 101, 3819. (b) Freeman, A. W.; Fréchet, J. M. J. Dendrimers and other Dendritic Polymers; Fréchet, J. M. J.; Tomalia, D. A., Eds.; Wiley: New York, 2001, 91-110.
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77953368299
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Fréchet J. M. J.; Tomalia, D. A., Eds.; Wiley: New York
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For recent overviews on(accelerated) convergent methods, see: (a) Grayson, S. M.; Fréchet, J. M. J. Chem. Rev. 2001, 101, 3819. (b) Freeman, A. W.; Fréchet, J. M. J. Dendrimers and other Dendritic Polymers; Fréchet, J. M. J.; Tomalia, D. A., Eds.; Wiley: New York, 2001, 91-110.
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Freeman, A.W.1
Fréchet, J.M.J.2
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41
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0034813618
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Recently a one-pot synthesis of an almost defect-free G4 dendron was reported: (a) Brauge, L.; Magro, G.; Caminade, A.-M; Majoral, J.-P. J. Am. Chem. Soc. 2001, 123, 6698. (b) Brauge, L.; Magro, G.; Caminade, A.-M.; Majoral, J.-P. J. Am. Chem. Soc. 2001, 123, 8446.
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Majoral, J.-P.4
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42
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85087577352
-
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Recently a one-pot synthesis of an almost defect-free G4 dendron was reported: (a) Brauge, L.; Magro, G.; Caminade, A.-M; Majoral, J.-P. J. Am. Chem. Soc. 2001, 123, 6698. (b) Brauge, L.; Magro, G.; Caminade, A.-M.; Majoral, J.-P. J. Am. Chem. Soc. 2001, 123, 8446.
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43
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0346556815
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EP1013636, 2000
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For 3,5-dibromoallylbenzene, see also: Ek, F.; Wistrand, L. G. EP1013636, 2000; Chem. Abstr. 2000, 133, 58600.
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Ek, F.1
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0345925560
-
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note
-
A more practical reason was the unfavorable synthesis protocol of the dibromo compound by Pd-catalyzed allylation of (3,5-dibromophenyl)trimethylstannane. In order to avoid the handling of tin compounds the diiodo analog was prepared by a different procedure.
-
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47
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57
-
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0347816987
-
-
note
-
Target molecule 28 was also synthesized by reaction of the(expensive) 3,5-dibromobenzyl bromide with allylmagnesium bromide.
-
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58
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0000882877
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See for example: (a) Jefferey, T. J. Chem. Soc., Chem. Commun. 1984, 1287. (b) Kang, S.-K.; Lee, H.-W.; Jang, S.-B.; Kim, T.-H.; Pyun, S.-J. J. Org. Chem. 1996, 61, 2604.
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See for example: (a) Jefferey, T. J. Chem. Soc., Chem. Commun. 1984, 1287. (b) Kang, S.-K.; Lee, H.-W.; Jang, S.-B.; Kim, T.-H.; Pyun, S.-J. J. Org. Chem. 1996, 61, 2604.
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Kim, T.-H.4
Pyun, S.-J.5
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60
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0000311321
-
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The Suzuki-Miyaura cross-coupling of 34 with vinylic halides has been previously described: (a) Ridgway, B. H.; Woerpel, K. A. J. Org. Chem. 1998, 63, 458. (b) Trost, B. M.; Probst, G. D.; Schoop, A. J. Am. Chem. Soc. 1998, 120, 9228.
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Ridgway, B.H.1
Woerpel, K.A.2
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61
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0032538014
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The Suzuki-Miyaura cross-coupling of 34 with vinylic halides has been previously described: (a) Ridgway, B. H.; Woerpel, K. A. J. Org. Chem. 1998, 63, 458. (b) Trost, B. M.; Probst, G. D.; Schoop, A. J. Am. Chem. Soc. 1998, 120, 9228.
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Trost, B.M.1
Probst, G.D.2
Schoop, A.3
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62
-
-
0347816988
-
-
note
-
Preliminary investigations on the corresponding G3 dendron (not shown) encountered the additional problem that the molar mass of this molecule could not be confirmed, since the applied methods (EI, FAB, MALDI-TOF) only showed much smaller fragments. The mass spectral analyses of TBDMS-protected dendrons 3 and 4 point to the sensitivity of the silyl group with the loss of methyl and tert-butyl groups.
-
-
-
-
64
-
-
85088340125
-
-
note
-
38
-
-
-
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65
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0030695513
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According to: Hölter, D.; Burgath, A.; Frey, H. Acta Polym. 1997, 48, 30.
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Hölter, D.1
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84891305266
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Nicolaou, K. C.; Patron, A. P.; Ajito, K.; Richter, P. K.; Khatuya, H.; Bertinato, P.; Miller, R. A.; Tomaszewski, M. J. Chem.-Eur. J. 1996, 2, 847.
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Miller, R.A.7
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-
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0346556813
-
-
note
-
No reference data were found.
-
-
-
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