Superparamagnetic Fe(OH)<sub>3</sub>@Fe<sub>3</sub>O<sub>4</sub> Nanoparticles: An Efficient and Recoverable Catalyst
for Tandem Oxidative Amidation of Alcohols with Amine Hydrochloride
Salts
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Abstract
Magnetic Fe(OH)<sub>3</sub>@Fe<sub>3</sub>O<sub>4</sub> nanoparticles
were successfully prepared and characterized. This magnetic nanocomposite
was employed as an efficient, reusable, and environmentally benign
heterogeneous catalyst for the direct amidation of alcohols with amine
hydrochloride salts. Several derivatives of primary, secondary and
tertiary amides were synthesized in moderate to good yields in the
presence of this catalytic system. The catalyst was successfully recycled
and reused up to six times without significant loss of its catalytic
activity