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38349130357
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Reissig, H.-U.; Flögel, O. German Patent Application DE 103 36 497 A1 (3.3.2005).
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Reissig, H.-U.; Flögel, O. German Patent Application DE 103 36 497 A1 (3.3.2005).
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3
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38349084570
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-
For a few first examples, see ref 1
-
For a few first examples, see ref 1.
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-
-
-
4
-
-
38349182098
-
-
This intermediate could be isolated and characterized for R, t-Bu see ref 1
-
This intermediate could be isolated and characterized for R = t-Bu (see ref 1).
-
-
-
-
5
-
-
38349114947
-
-
Whereas methoxyallene was generally used in large excess (3 equiv) only 1 equiv of allenes 6a-c was employed. This may explain the moderate yields.
-
Whereas methoxyallene was generally used in large excess (3 equiv) only 1 equiv of allenes 6a-c was employed. This may explain the moderate yields.
-
-
-
-
6
-
-
38349172257
-
-
The lower yield may be due to side reactions of the 2-alkyl side chain during the relatively harsh conditions of the condensation step
-
The lower yield may be due to side reactions of the 2-alkyl side chain during the relatively harsh conditions of the condensation step.
-
-
-
-
7
-
-
38349162732
-
-
Unfortunately, cyanopyridines were not suitable substrates for the addition of lithiated alkoxyallenes. So far, only complex mixtures of compounds were isolated
-
Unfortunately, cyanopyridines were not suitable substrates for the addition of lithiated alkoxyallenes. So far, only complex mixtures of compounds were isolated.
-
-
-
-
8
-
-
34250683322
-
-
The unpolar pyridyl nonaflates are much easier to separate from byproducts. Furthermore, they are excellent precursors for the anticipated palladium-catalyzed coupling reactions. For examples of the reactions of alkenyl nonaflates, see:, and references cited in this publication
-
The unpolar pyridyl nonaflates are much easier to separate from byproducts. Furthermore, they are excellent precursors for the anticipated palladium-catalyzed coupling reactions. For examples of the reactions of alkenyl nonaflates, see: Högermeier, J.; Reissig, H.-U. Chem. Eur. J. 2007, 13, 2410-2420 and references cited in this publication.
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Högermeier, J.1
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9
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-
38349129772
-
-
Several of the compounds prepared show interesting photophysical properties, which will have to be investigated in more detail
-
Several of the compounds prepared show interesting photophysical properties, which will have to be investigated in more detail.
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-
-
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10
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0001524568
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Particularly useful are terpyridine derivatives: Schubert, U. S.; Hofmeier, G. R.; Newkome G. R. Modern Terpyridine Chemistry; Wiley-VCH: Weinheim, 2006.
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