Conversion of (2-methyl-1-azabuta-1,3-diene)tricarbonyliron(0) complexes into tertiary (enamine)tricarbonyliron(0) complexes

Abstract Treatment of (2-methyl-1-azabuta-1,3-diene)tricarbonyliron(0) complexes with lithium diethylamide followed by a methyl iodide, benzyl bromide or allyl bromide quench leads to the formation of tertiary (enamine)tricarbonyliron(0) complexes in good yield. The crystal structures of two complexes, (2-( N -methyl- N -(4-methoxyphenyl)amino)-4-phenylbuta-1,3-diene)tricarbonyliron(0) ( 19 ) and (2-( N -allyl- N -isopropylamino)-4-phenylbuta-1,3-diene)tricarbonyliron(0) ( 24 ) are reported.