Abstract
A method for the selective hydration of nitrile to amide by employing commercially available acetaldoxime and inexpensive oxometallate such as molybdate, vanadate, and tungstate in environmentally friendly water is described. Under this protocol, nitriles including aromatic nitriles, heterocyclic nitriles, and aliphatic nitriles were converted into the corresponding amides in good to excellent yields.
[Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications® for the following free supplemental resource(s): Full experimental and spectral details.]
GRAPHICAL ABSTRACT
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ACKNOWLEDGMENT
Financial support from the National Natural Science Foundation of China-NSAF (Grant No. 11076017) is gratefully acknowledged.
Notes
a Reaction conditions: benzonitrile (2 mmol), H2O (10 mL).
b Isolated yield.
a Reaction conditions: nitrile (2 mmol), acetaldoxime (6 mmol), Na2MoO4 · 2H2O (0.2 mmol), H2O (10 mL), reflux.
b Isolated yield.
c 8 mmol acetaldoxime was used.
d 4 mmol acetaldoxime was used.