RSC Advances
Paper
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.88; N, 5.98%; found C, 76.84; H, 6.93; N, 6.07%; TOF-MS (ESI ): 10 (a) J. Sun, C. Zhu, Z. Dai, M. Yang, Y. Pan and H. Hu, J. Org.
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m/z calcd for [C H N O ] 468.24, found 469.25 [M] + H .
Chem., 2004, 69, 8500–8503; (b) I. Lippold, J. Becher,
D. Klemm and W. Plass, J. Mol. Catal. A: Chem., 2009, 299,
3
0
32 2 3
1
2–17; (c) Y. Wu, J. Liu, X. Li and A. S. C. Chan, Eur. J. Org.
Conclusions
Chem., 2009, 2607–2610; (d) Y. Wang, M. Wang, Y. Wang,
X. Wang, L. Wang and L. C. Sun, J. Catal., 2010, 273, 177–
In conclusion, a highly efficient iron–H O -based catalytic
2
2
1
2
81; (e) Q. Zeng, W. Weng and X. Xue, Inorg. Chim. Acta,
012, 388, 11–15.
protocol was developed for asymmetric sulfoxidation. The
simplicity of the procedure and reaction condition makes it
attractive over other metal-catalyzed catalytic systems. This
catalyst not only showed high enantioselectivity (up to 96%) for
sterically and electronically diverse types of suldes, but it also
provided excellent chemoselectivity (up to 98%) with good
conversion (up to 92%). Substrates containing electron-
withdrawing substituents seemed to be less reactive, as those
gave comparatively low conversion but provided slightly higher
enantioselectivity and chemoselectivity even for ortho-
substituted suldes.
1
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61556 | RSC Adv., 2014, 4, 61550–61556
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