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3
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0034609675
-
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For intramolecular applicatons of the Ritter reaction to alcohol derivatives, see; a
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For intramolecular applicatons of the Ritter reaction to alcohol derivatives, see; a) K. V. Emelen, T. De Wit, G. J. Hoornaert, F. Compernolle, Org. Lett. 2000, 2, 3083-3086;
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5
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0008267756
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Moderate yields are obtained with primary and secondary benzylic alcohols, see for instance: a C. L. Parris, R. M. Christenson, J. Org. Chem. 1960, 25, 331-334;
-
Moderate yields are obtained with primary and secondary benzylic alcohols, see for instance: a) C. L. Parris, R. M. Christenson, J. Org. Chem. 1960, 25, 331-334;
-
-
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7
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0010954833
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See, for instance: a
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11
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28644438589
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See, for instance: a) X. Song, R. I. Hollingworth, Tetrahedron Lett. 2006, 47, 229-232;
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33645909561
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For the use of a borate complex as catalyst, see
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e) For the use of a borate complex as catalyst, see: T. Maki, K. Ishihara, H. Yamamoto, Org. Lett. 2006, 8, 1431-1434.
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A. García Martínez, R. Martínez Álvarez, E. Teso Vilar, A. García Fraile, M. Hanack, L. R. Subramanian, Tetrahedron Lett. 1989, 30, 581-582.
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See, for instance: a
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See, for instance: a) M. M. Lakouraj, B. Movassagh, J. Fasihi, Synth. Commun. 2000, 30, 821-827;
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34247232003
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b) F. Tamaddon, M. Khoobi, E. Keshavarz, Tetrahedron Lett. 2007, 48, 3643-3646.
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Tamaddon, F.1
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33645069129
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a) R. Sanz, A. Martínez, J. M. Álvarez-Gutiérrez, F. Rodríguez, Eur. J. Org. Chem. 2006, 1383-1386;
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a) R. Sanz, A. Martínez, D. Miguel, J. M. Álvarez- Gutiérrez, F. Rodríguez, Adv. Synth. Catal. 2006, 348, 1841-1845;
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31
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33750037029
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DNBSA has been reported as an efficient Bransted acid catalyst for the Hosomi-Sakurai reaction of acetals, see: D. Kampen, B. List, Synlett 2006, 2589-2592
-
DNBSA has been reported as an efficient Bransted acid catalyst for the Hosomi-Sakurai reaction of acetals, see: D. Kampen, B. List, Synlett 2006, 2589-2592.
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-
-
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32
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35348813140
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Disappointingly, a primary benzylic alcohol such as benzyl alcohol gave rise to low conversion (< 20%) under DNBSA catalysis.
-
Disappointingly, a primary benzylic alcohol such as benzyl alcohol gave rise to low conversion (< 20%) under DNBSA catalysis.
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-
-
-
33
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0033519250
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See, for instance: a
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See, for instance: a) D. R. Barn, A. Bom, J. Cottney, W. L. Caulfield, J. R. Morphy, Bioorg. Med. Chem. Lett. 1999, 9, 1329-1334;
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Barn, D.R.1
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0030840273
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b) N. A. Petasis, A. Goodman, I. A. Zavialov, Tetrahedron 1997, 53, 16463-16470.
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Petasis, N.A.1
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36
-
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0034032537
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Trifluoroacetic acid was used as solvent: M. Laurent, J. Marchand-Brynaert, Synthesis 2000, 667-672.
-
Trifluoroacetic acid was used as solvent: M. Laurent, J. Marchand-Brynaert, Synthesis 2000, 667-672.
-
-
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37
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0001631526
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a) Al: R. Wolovsky, N. Maoz, J. Org. Chem. 1973, 38, 4040-4044;
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Al, R.1
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38
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0037425133
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Pd/In: T. Tsuchimoto, S. Kamiyama, R. Negoro, E. Shirakawa, Y. Kawakami, Chem. Commun. 2003, 852-853;
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b) Pd/In: T. Tsuchimoto, S. Kamiyama, R. Negoro, E. Shirakawa, Y. Kawakami, Chem. Commun. 2003, 852-853;
-
-
-
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39
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35348850147
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Borges de Castro
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c) In: C. Peppe, E. Schulz Lang, F. Molinos de Andrade, L. Borges de Castro, Synlett 2004, 1723-1726.
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In, C.1
Peppe, E.2
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0030605049
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F. Ciminale, L. Lopez, V. Paradiso, A. Nacci, Tetrahedron 1996, 52, 13971-13980.
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Ciminale, F.1
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-
42
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35348912554
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Under DNBSA catalysis at room temperature, a 2:1 mixture of 11a/12a was formed, showing the poor reproducibility on the ratio of 11/12.
-
Under DNBSA catalysis at room temperature, a 2:1 mixture of 11a/12a was formed, showing the poor reproducibility on the ratio of 11/12.
-
-
-
-
43
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35348874854
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We have also checked the reaction by using other nitriles different from acetonitrile. For example, positive results were obtained in the reaction of 1-phenylethanol (1a) with benzonitrile. Details on this work will be published at due time
-
We have also checked the reaction by using other nitriles different from acetonitrile. For example, positive results were obtained in the reaction of 1-phenylethanol (1a) with benzonitrile. Details on this work will be published at due time.
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-
-
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44
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35348921761
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We used 2,4-dinitrobenzenesulfonic acid hydrate (Aldrich, 556971, Its elemental analysis gave the molecular formula (NO2)2C 6H3SO3H·2.5H2O
-
2O.
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