JOURNAL OF POLYMER SCIENCE: PART A: POLYMER CHEMISTRY DOI 10.1002/POLA
TABLE 2 Reusability of Catalyst in Epoxidation of
8 Reyes, P.; Borda, G.; Gnecco, J.; Rivas, B. L. J Appl Polym
a
cis-Cyclooctene with H
2
O
2
in Ethanol
Sci 2004, 93, 1602–1608.
9
Sherrington, D. C.; Simpson, S. React Funct Polym 1993, 19,
3–25.
Catalytic Activity
Conv. (%) Sel. (%)
98
1
Run
Times (h)
10 Mbeleck, R.; Ambroziak, K.; Saha, B.; Sherrington, D. C. React
Funct Polym 2007, 67, 1448–1457.
1
2
3
4
5
a
12
12
12
12
12
98
99
99
99
99
0
1
1 Romero, M. D.; Calles, J. A.; Oca n˜ a, M. A.; Go mez, J. M.
98
98
97
97
Micro Meso Mater 2008, 111, 243–253.
1
2 Maurya, M. R.; Kumar, M.; Sikarwar, S. React Funct Polym
2
006, 66, 808–818.
1
3 Fischer, A.; Brembilla, A.; Lochon, P. Macromolecules 1999,
Reactions were conducted using cis-cyclooctene (3.50 mmol), 30 wt %
3
2, 6069–6072.
ꢀ
H
O
2 2
(22 mmol) at 60 C, catalyst (0.10 g), and ethanol (5.0 mL).
1
4 Bohrisch, J.; Wendler, U.; Jaeger, W. Macromol Rapid Com-
mun 1997, 18, 975–982.
CONCLUSIONS
1
5 Harnish, B.; Robinson, J. T.; Pei, Z.; Ramstrom, O.; Yan, M.
In summary, we have described an environment-friendly sys-
tem for epoxidation of alkenes that consists of P4VP micro-
Chem Mater 2005, 17, 4092–4096.
sphere-supported Mo catalyst, H
2
O
2
as oxidant, and ethanol
16 Saladino, R.; Neri, V.; Pelliccia, A. R.; Caminiti, R.; Sadun, C.
J Org Chem 2002, 67, 1323–1332.
as solvent. This system exhibited outstanding catalyst activ-
ities with nearly quantitative and conversion (both >98% at
a reaction time of 6 h) in the epoxidation of cis-cyclooctene.
The catalyst had a remarkable reusability. Upon recycling
five times, there was no appreciable decrease in its catalytic
activity. Further investigation is in progress to explore this
new system for epoxidation of more other alkenes and to
scale up the reactions for possible industrial applications.
1
7 Rudolph, J.; Reddy, K. L.; Chiang, J. P.; Sharpless, K. B. J
Am Chem Soc 1997, 119, 6189–6190.
1
8 Balakrishnan, T.; Rajendran, V. J Appl Polym Sci 2000, 78,
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075–2080.
1
9 Pathak, S.; Greci, M. T.; Kwong, R. C.; Mercado, K.; Prakash,
G. K. S.; Olah, G. A.; Thompson, M. E. Chem Mater 2000, 12,
1
985–1989.
The authors thank the NSFC (Grant No. 50773003) and
National Basic Research of China (973 Program: 2007CB
2
0 Mimoun, H.; Seree De Roch, I.; Sajus, L. Bull Soc Chim Fr
1
969, 5, 1481–1492.
613301) for support. Y. Wei is most grateful to the Chinese Min-
2
1 Glas, H.; Spiegler, M.; Thiel, W. R. Eur J Inorg Chem 1998,
istry of Education and the Li Ka-shing Foundation for the sup-
port through the Chang-Jiang Scholar Program.
1
998, 275–281.
2
2 Sivudu, K. S.; Thomas, S.; Shailaja, D. Appl Clay Sci 2007,
3
7, 185–192.
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3 Syukri, S.; Hijazi, K. A.; Sakthivel, A.; Al-Hmaideen, A. I.;
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