sio2@feso4 nano composite: a recoverable nano-catalyst for eco-friendly synthesis oximes of carbonyl compounds

various aldoximes and ketoximes synthesis of corresponding aldehydes and ketones in the presence of sio2@feso4 nano composite as recoverable nano catalyst and nh2oh·hcl. the sio2@feso4 nano composite system was carried out between 10 to 15 min in oil bath (70-80 °c) under solvent-free condition in excellent yields in addition this protocol can be used for industrial scales. this method offers some advantages in term of clean reaction conditions, easy work-up procedure, short reaction time, applied to convert α-diketones to α-diketoximes (as longer than other carbonyl compounds), α,β-unsaturated aldehydes and ketones to corresponding oximes and suppression of any side product. so we think that nh2oh•hcl/sio2@feso4 nano composite system could be considered a new and useful addition to the present methodologies in this area. structure of products and nano composite elucidation was carried out by 1h nmr, 13c nmr, ft-ir, scanning electron microscopy (sem).