one-pot reduction of aromatic carboxylic acid to alcohol by sio2@feso4 nano composite at solvent-free condition

Application of sio2@feso4 nanocomposite as a new nanocatalyst in reduction area was investigated. carboxylic acid simple and convenient reduction to alcohol by 0.75 mol of the nanocomposite, 3 mol sodium borohydride (nabh4) as reduction reagent under a solvent-free condition at 30-65 min. the reaction happens in two stages - first to form an aldehyde and then a primary alcohol. because sodium aluminum hydride reacts rapidly with aldehydes, it is impossible to stop at the halfway stage. the method does not require an anhydrous solvent, does not involve a hazardous reagent has somewhat different selectivity than techniques in general use, and may sometimes be the method of choice.