X.-F. Lin et al. / Tetrahedron 68 (2012) 5806e5809
5809
7.55e7.61 (m, 2H, Ar), 7.72 (d, J¼8.1 Hz, 2H, Ar). 13C NMR (125 MHz,
3. For some recent selected examples, please see: (a) Li, H.-L.; Yang, M.; Qi, Y.-X.;
Xue, J.-J. Eur. J. Org. Chem. 2011, 2662e2667; (b) Rao, H.-H.; Yang, L.; Shuai, Q.;
Li, C.-J. Adv. Synth. Catal. 2011, 353, 1701e1706; (c) Liu, J.; Zhou, X.-Y.; Rao, H.-H.;
Xiao, F.-H.; Li, C.-J.; Deng, G.-J. Chem.dEur. J. 2011, 17, 7996e7999; (d) Li, M.-Z.;
Wang, C.; Ge, H.-B. Org. Lett. 2011, 13, 2062e2064; (e) Kobayashi, K.; Nishimura,
Y.; Gao, F.-X.; Gotoh, K.; Nishihara, Y.; Takagi, K. J. Org. Chem. 2011, 76,
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CDCl3)
d 21.2, 21.5, 127.1, 127.9, 128.8, 130.17, 130.24, 132.8, 135.0,
137.91, 137.95, 143.0, 196.6.
4.2.17. Compound 4p.10 A white solid. 1H NMR (300 MHz, CDCl3,
TMS)
7.32e7.37 (m, 2H, Ar), 7.52e7.58 (m, 2H, Ar), 7.83 (d, J¼9.0 Hz, 2H,
Ar). 13C NMR (125 MHz, CDCl3)
21.4, 55.5, 113.5, 127.0, 128.0, 130.2,
d
2.42 (s, 3H, Me), 3.89 (s, 3H, OMe), 6.97 (d, J¼9.0 Hz, 2H, Ar),
d
4. For some selected examples, please see: (a) Gooßen, L. J.; Ghosh, K. Angew.
Chem., Int. Ed. 2001, 40, 3458e3460; (b) Gooßen, L. J.; Ghosh, K. Eur. J. Org.
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130.3, 132.5, 132.6, 138.0, 138.3, 163.2, 195.8.
4.2.18. Compound 4q.3e A white solid. 1H NMR (300 MHz, CDCl3,
ꢀ
ꢀ
ꢀ
2006, 71, 5725e5731; (d) Polackova, V.; Toma, S.; Augustíinova, I. Tetrahedron
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Kakino, R.; Yasumi, S.; Shimizu, I.; Yamamoto, A. Bull. Chem. Soc. Jpn. 2002,
75, 137e148.
TMS) d C
2.42(s, 6H, Me), 7.33e7.41(m, 4H, Ar),7.55e7.62(m, 4H, Ar).13
NMR (125 MHz, CDCl3)
197.2.
d 21.3, 127.3, 128.0, 130.4, 133.1, 137.7, 138.1,
4.2.19. Compound 4r.13 A white solid. 1H NMR (300 MHz, CDCl3,
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C.-J.; Chan, T. H. Organic Reactions in Aqueous Media; Wiley: New York, NY,
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€
1997; (c) Organic Reactions in Water; Lindstrom, U. M., Ed.; Blackwell: Oxford,
(d, J¼7.5 Hz, 1H, Ar), 7.65 (s, 1H, Ar). 13C NMR (125 MHz, CDCl3)
€
2007; (d) Li, C.-J. Chem. Rev. 1993, 93, 2023e2035; (e) Lindstrom, U. M. Chem.
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19.9, 21.3, 125.1, 127.5, 128.3, 128.4, 130.1, 130.4, 130.9, 133.9, 136.7,
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137.7, 138.3, 138.8, 198.8.
Acknowledgements
Financial support from the National Natural Science Foundation
of China (No. 21002072) and the Opening Foundation of Zhejiang
Provincial Top Key Discipline (No. 1000612001) is greatly ac-
knowledged. Y.L. and S.-Y.L. thank Science and Technology De-
partment of Zhejiang Province (Xinmiao Programme) for financial
support (Nos. 2011R424016 and 2010R424016).
6. For some selected reviews on NHCs, please see: (a) Mercs, L.; Albrecht, M.
Chem. Soc. Rev. 2010, 39, 1903e1912; (b) Lin, J. C. Y.; Huang, T. W.; Lee, C. S.;
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€
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Supplementary data
ꢀ
7. (a) Churruca, F.; SanMartin, R.; Ines, B.; Tellitu, I.; Domínguez, E. Adv. Synth.
ꢀ
Catal. 2006, 348, 1836e1840; (b) Ines, B.; SanMartin, R.; Moure, M. M.;
Supplementary data associated with this article can be found in
clude MOL files and InChiKeys of the most important compounds
described in this article.
Domínguez, E. Adv. Synth. Catal. 2009, 351, 2124e2132; (c) Zhang, X.-Q.; Qiu,
Y.-P.; Rao, B.; Luo, M.-M. Organometallics 2009, 28, 3093e3099; (d) Fleckenstein,
C.; Roy, S.; Leuthauber, S.; Plenio, H. Chem. Commun. 2007, 2870e2872; (e)
€
Schoenfelder, D.; Weberskirch, R.; Nuyken, O. Polym. Prepr. 2004, 45, 450e451;
€
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M.-T.; Lu, J.-M. Appl. Organomet. Chem. 2012, 26, 175e179.
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