4
YU ET AL.
4
| CONCLUSIONS
P. G. Andersson, P. Brandt, Chem. Soc. Rev. 2006, 35, 237. (f)
S. Gladiali, E. Alberico, Chem. Soc. Rev. 2006, 35, 226.
(
g) X. Wu, J. Xiao, Metal–Catalyzed Reactions in Water, 1st ed.,
We have successfully developed a highly effective oxidative
transformation of aldehydes under air using a bis-NHC cat-
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alyst (1 mol%) in the presence of Pd(OAc) . Several aryl and
2
aliphatic aldehydes have been successfully transformed into
the corresponding acids with good-to-excellent yields under
open-air conditions in water. This reaction can be carried
out with a low loading (0.005 mol%) of bis-NHC catalyst,
particularly 4-trifluoromethylbenzaldehyde, even in scale-
up reactions. The excellent results of the reaction, together
with its operational simplicity, make this methodology cost-
effective. Water is a cheap, safe, and environment-friendly
solvent. The use of water in this transformation is a high-
light of the methodology and can be beneficial in the chem-
ical industry.
1
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[
ACKNOWLEDGMENTS
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7] (a) J. D. Holbery, W. M. Reichert, I. Tkatchenko, E. Bouajila,
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Republic of China (107WFA0510613) for financial
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SUPPORTING INFORMATION
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in the Supporting Information section at the end of this
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