Multistep and one-pot conversion of aldehydes to nitriles were carried out conveniently with out solvent using KF/Al 2 O 3 , montmorillonite KSF and K10 as catalyst, under microwave irradiation. The reactions are completed within 6-8 min to give satisfactory yields. KF/Al 2 O 3 was more effective catalyst both in multistep procedure and one-pot reaction.
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