Z.-C. Wu et al. / Catalysis Communications 29 (2012) 158–161
161
Table 4
Acknowledgments
II
Effect of substituent groups on Pd -AOFs catalyzed Suzuki reaction.
II
Pd -AOFs
+
R1
PhB(OH)2 K2CO3
This research was supported by the National Natural Science
Foundation of China (21171003, 20771002).
Br
C H OH/H O
2
5
2
R1
Entry
R1
/
Products
Conversion (%)a Yield (%)b
9
8%
Appendix A. Supplementary data
1
2
3
>99%
99%
(87%c,
d
e
93% ,98% )
4-OCH3
3-OCH3
95%
99%
95%
References
4
4-NH2
4-CH3
4-NO2
98%
93%
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4-COCH3
[
6
Reaction conditions: aryl bromide (10.0 mmol), phenylboronic acid (11.0 mmol),
II
Pd -AOFs (0.66 mol%), K
2 3 5 2
2
CO (11.0 mmol), C H OH/H O (V/V=2, 30 mL), refluxing
8
for 3 h.
Based on GC.
Isolated yield.
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Pd -AOFs: 0.59 mol%.
Pd -AOFs: 0.99 mol%.
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(
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(
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[
[
II
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1
[
4
4
. Conclusions
[
II
Pd -AOFs are polymer-supported catalysts, and exhibit good cata-
[
lytic activity in promoting the Suzuki reaction of bromobenzene with
phenylboronic acid. The reaction has a wide functional group tolerance.
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[
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II
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Table 5
II
Effect of reusability of catalyst on Pd -AOFs catalyzed Suzuki reaction.
II
Pd -AOFs
Br
+
PhB(OH)2
K CO C H OH/H O
2
3
2
5
2
Yieldb (%)
Run
Yield (%)
a
Run
1
2
3
98%
95%
95%
4
5
6
94%
90%
80%
Reaction conditions: bromobenzene (10.0 mmol), phenylboronic acid (11.0 mmol),
AOFs-Pd(II) (0.66 mol%), K CO (11.0 mmol), C H OH/H O (V/V=2, 30 mL), reaction
2 3 2 5 2
time (3 h), heating reflux.
a
Isolated yield.