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Catalysis Science & Technology
Page 8 of 9
DOI: 10.1039/C7CY01511A
ARTICLE
Journal Name
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ee value: 75%, determined by HPLC (i-PrOH/n-hexane = 3: 7 (v/v)),
flow rate 1.0 mL/min, UV 254 nm, 20 oC. Major enantiomer tR = 11.5
min and minor enantiomer tS =21.5 min. (R)-Methyl p-
bromophenyl sulfoxide: [α]20D = +148 (c = 0.8, acetone). Yield: 75%;
ee value: 95%, determined by HPLC (i-PrOH/n-hexane = 5: 5 (v/v)),
flow rate 1.0 mL/min, UV 254 nm, 20 oC. Major enantiomer tR = 8.4
min and minor enantiomer tS =9.9 min. (R)-ethyl phenyl sulfoxide:
D
[α]20 = +96 (c = 1.3, acetone). Yield: 85%; ee value: 98%,
10 Y. N. Belokon, M. North, V. I. Maleev, N. V. Voskoboev, M. A.
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12 S. Stankovich, D. A. Dikin, G. H. B. Dommett, K. M. Kohlhaas, E. J.
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80, 1339.
determined by HPLC (i-PrOH/n-hexane = 1: 9 (v/v)), flow rate 1.0
mL/min, UV 254 nm, 20 oC. Major enantiomer tR = 8.35 min and
minor enantiomer tS =10.21 min.
Sulfoxidation reaction for kinetic measurement
Catalyst (1.0 mol% of substrate, based on titanium ion content in
catalyst) was stirred with methyl phenyl sulfide (1.0 mmol) in
deionized water (1 mL) at 20 oC. H2O2 (30 wt%, 1.2 mmol) was then
added into the mixture in one portion. To determine the rate of
sulfoxidation, reaction mixture at 20, 30, 45, 60, 75, and 90 min
were drawn from the aqueous system, filtrated through silica gel
with ethyl acetate as an eluent and analyzed by GC.
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15 C. Lv, D. Xu, S. Wang, C. Miao, C. Xia and W. Sun, Catal. Comm.,
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16 S. Stankovich, R. D. Piner, S. T. Nguyen and R. S. Ruoff, Carbon,
2006, 44, 3342.
17 (a) A. J. Patil, J. L. Vickery, T. B. Scott and S. Mann, Adv. Mater.,
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18 M. Veerapandian, M. H. Lee, K. Krishnamoorthy and K. Yun,
Carbon, 2012, 50, 4228.
19 Y. Zhang, R. Tan, G. Zhao, X. Luo, C. Xing and D. Yin, J. Catal.,
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Acknowledgements
The work was supported by the National Natural Science
Foundation of China (21476069, 21676078), the Natural Science
Foundation of Hunan Province for Distinguished Young Scholar
(2016JJ1013), and the Program for Excellent Talents in Hunan
Normal University (ET14103).
20 G. Wang, N. Yu, L. Peng, R. Tan, H. Zhao, D. Yin, H. Qiu, Z. Fu and
D. Yin, Catal. Lett., 2008, 123, 252.
21 X. Tang, W. Li, Z. Yu, M. A. Rafiee, J. Rafiee, F. Yavari and N.
Koratkar, Carbon, 2011, 49, 1258.
22 R. Luo, R. Tan, Z. Peng, W. Zheng and D. Yin, J. Catal., 2012, 287,
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23 W. Yuan, B. Li and L. Li, Appl. Surf. Sci., 2011, 257, 10183.
24 N. V. Medhekar, A. Ramasubramaniam, R. S. Ruoff and V. B.
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26 S. Sahoo, P. Kumar, F. Lefebvre and S.B. Halligudi, J. Catal., 2009,
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8 | J. Name., 2012, 00, 1-3
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