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14
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0037429071
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Recent examples:
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Recent examples:. Reddy K.L. Tetrahedron Lett. 44 (2003) 1453
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(2003)
Tetrahedron Lett.
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Reddy, K.L.1
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18
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3342953528
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Kobayashi J., Nakamura M., Mori Y., Yamashita Y., and Kobayashi S. J. Am. Chem. Soc. 126 (2004) 9192
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(2004)
J. Am. Chem. Soc.
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Kobayashi, J.1
Nakamura, M.2
Mori, Y.3
Yamashita, Y.4
Kobayashi, S.5
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21
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34548525558
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and references cited therein
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Vilotijevic I., and Jamison T.F. Science 317 (2007) 1189 and references cited therein
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(2007)
Science
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Vilotijevic, I.1
Jamison, T.F.2
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26
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33947486854
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Olah G.A., McIntyre J.S., Bastien I.J., Tolgyesi W.S., Baker E.B., and Evans J.C. J. Am. Chem. Soc. 86 (1964) 1360
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J. Am. Chem. Soc.
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Olah, G.A.1
McIntyre, J.S.2
Bastien, I.J.3
Tolgyesi, W.S.4
Baker, E.B.5
Evans, J.C.6
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31
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35348920919
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2-Benzyloxy-1-methylpyridinium triflate [26189-59-3] is licensed, manufactured, and distributed non-exclusively by Sigma-Aldrich Chemical Co., catalog #679674; see: Dudley, G. B. Compounds and methods of arylmethylation (benzylation) as protection for alcohol groups. U.S. Patent Appl. 11/399,300, 2006.
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32
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35348868359
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ChemFiles 7 (2007) 3
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(2007)
ChemFiles
, vol.7
, pp. 3
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36
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33947634131
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For the synthesis of PMB ethers, see:
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For the synthesis of PMB ethers, see:. Nwoye E.O., and Dudley G.B. Chem. Commun. (2007) 1436
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(2007)
Chem. Commun.
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Nwoye, E.O.1
Dudley, G.B.2
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38
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35348824672
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note
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1H NMR spectroscopy and provided characterization data in accord with the literature reports.
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39
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33847089147
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Triflic acid is one of the most acidic monoprotic acids known and readily protonates sulfuric acid.
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Triflic acid is one of the most acidic monoprotic acids known and readily protonates sulfuric acid. Howells R.D., and McCown J.D. Chem. Rev. 77 (1965) 69
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(1965)
Chem. Rev.
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Howells, R.D.1
McCown, J.D.2
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43
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0037012946
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3) δ 149.7, 139.0, 129.1, 128.5, 126.8, 126.7, 116.5, 112.3, 56.6, 38.5. For full characterization, see:
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3) δ 149.7, 139.0, 129.1, 128.5, 126.8, 126.7, 116.5, 112.3, 56.6, 38.5. For full characterization, see:. Desmarets C., Schneider R., and Fort Y. J. Org. Chem. 67 (2002) 3029
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(2002)
J. Org. Chem.
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Desmarets, C.1
Schneider, R.2
Fort, Y.3
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48
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0003467672
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Friedel-Crafts alkylations of electron-rich arenes are thought to have early transition states with little σ-bond character between the electrophile and arene. Therefore, the o/p selectivity is generally modest. Less activated arene substrates react through later transition states, which usually translate to higher para-selectivity (cf. entries 2 and 6). For further discussion, see:, Wiley and Sons: Hoboken, NJ pp 670-671
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Friedel-Crafts alkylations of electron-rich arenes are thought to have early transition states with little σ-bond character between the electrophile and arene. Therefore, the o/p selectivity is generally modest. Less activated arene substrates react through later transition states, which usually translate to higher para-selectivity (cf. entries 2 and 6). For further discussion, see:. March J., and Smith M.B. Advanced Organic Chemistry: Reactions, Mechanism, and Structure. 6th ed. (2007), Wiley and Sons: Hoboken, NJ pp 670-671
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(2007)
Advanced Organic Chemistry: Reactions, Mechanism, and Structure. 6th ed.
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March, J.1
Smith, M.B.2
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50
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35348873488
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note
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23a,b note that the formation of benzyl ether takes precedence over Friedel-Crafts chemistry.{A figure is presented}
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