Abstract
Nickel (II) chloride hexahydrate (NiCl2.6H2O) has been employed for the efficient synthesis of highly functionalised piperidines via three-component cyclo-condensation reaction of aldehydes, aromatic amines and acetoacetic esters in ethanol under ambient condition. The key advantages of this procedure are high yields, easy work-up and purification of products by non-chromatographic methods.
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