Animal bone meal as new recyclable and ecological catalyst for the oximes synthesis in solvent-free conditions

In this present study,the transformation of ketones or aldehyde to the corresponding oximes was efficiently achieved using animal bone meal alone and modified animal bone meal with sodium nitrateas two new heterogeneous catalysts which respect the environment and does not cause any toxicity. these heterogeneous catalysts exhibited excellent catalytic activity under free-solvent conditions. the salient benefits of this method rely on various factors namely: a mildness of the reaction conditions,short reaction times,operational simplicity,high chemoselectivity,low cost and reusability several times with only a slight loss of activity.