Reactions of acyl(carbonyl)ruthenium(II) and acyl(carbonyl)iron(II) complexes with amines. Preparation of novel propionyl(carbamoyl)ruthenium(II) complexes

Article abstract of DOI:10.1016/0022-328X(92)83148-B

Treatment of Ru(COEt)Cl(CO)(PPh3)2 (1) with secondary amines (R2NH) under pressure of CO and/or ethylene gives propionyl-carbamoyl complexes Ru(COEt)(CONR2)(CO)(PPh3)2 (NR2 = NEt2 (4a), N(CH2)4CH2 (4b), NMe2 (4c)) together with the ammonium salt R2NH2Cl.Complexes 4a-c have been isolated as pale yellow crystals and characterized by means of NMR and IR spectroscopy and elemental analysis.Reactions of Fe(COMe)I(CO)2(PMe3)2 and BF4 with nucleophiles (HNEt2, LiNMe2, EtOH (in conjunction with Et3N) and NaOMe) give the corresponding acetamides and acetic acid esters.