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A new protocol for the synthesis of nitriles from carbonyl compounds with elongation of the molecule with two carbon atoms was developed. It involves a reaction of ethyl cyanoacetate with different aldehydes in the presence of iron pentacarbonyl as a reducing agent. This protocol is very simple and requires only commonly available reagents, with no catalyst or complicated ligands being employed.
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Afanasyev et al. (2018) studied this question.
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