The ruthenium(II) complex, [Ru(cod)py4](BPh4)2 (cod=1,5-cyclooctadiene, py=pyridine) has been shown to catalyze the reduction of oxidized nitrogen compounds with CO and H2O. In this reaction, primary, secondary, and tertiary nitroalkanes are converted into amides, ketones, and amines, respectively. Nitrosobenzene and picoline N-oxides are also reduciable to amines in good yields.
The ionic complex [Ru(cod)py4](BPh4)2 (cod = 1,5-cyclooctadiene, py=pyridine) has been shown to be an efficient catalyst for the reduction of nitrobenzenes with carbon monoxide and water, which gives anilines selectively.
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