The use of ammonium formates or formic acid as a reducing agent for functional groups in moderate reaction conditions is interesting and promising [1]. With these reagents carbonyl and amine-drivatives, in particular schiff bases are transformed into corresponding amines [2]. An azomethine reduction of this type is involved as the key step in the synthetically important reductive alkylation of ammonia and amines by aldehydes and ketones in the ...