Selective complexation of functionalised 1-thia-3-azabuteadienes with iron carbonyl

Article abstract of DOI:10.1016/0022-328X(89)88008-8

1-Thia-3-aza-butadienes R²C(S)N=C(CO2C2H5)N(CH3)2 bearing an aromatic substituent R² in position 2 (R²=C6H5), react selectively with Fe2(CO)9 to afford monoiron tricarbonyl and diiron hexacarbonyl complexes with retention