Reaction of (1-azabuta-1,3-diene)tricarbonyliron(0) complexes with sodium borohydride under microwave conditions

Reaction of (1-azabuta-1,3-diene)tricarbonyliron(0) complexes with sodium borohydride under microwave irradiation leads to formation of saturated secondary amines. When sodium borodeuteride is used for the reaction the products are 1,2,3-trideutero secondary amines. When this reaction is performed under thermal conditions the complexes are inert to reduction by sodium borohydride.