Regioselective synthesis of η3-(N-methoxycarbonyl-7-azabicyclo[2.2.1]he ta-2,5-dienyl)-η5-(C5Me5)RuCl complexes
摘要:
The reactions of Cp*Ru(COD)Cl and CpRu(COD)Cl with N-methoxycarbonyl-7-azabicyclo[2.2.1]hepta-2,5-diene derivatives were found to give eta(3)-[N(CO2Me)C6H3(2-p-MeC6H4SO2)(6-CO2Me)(5-Me)]CpRuCl and eta(3)-[N(CO2Me)-7-azabicyclo[2.2.1]heptadienyl]Cp*RuCl complexes in good yields (54-78%). The coordination reaction was found to take place regioselectively at the least substituted pi-bond of the N-methoxycarbonyl-7-azabicyclo[2.2.1]hepta-2,5-diene derivatives. The structures of the complexes were determined by H-1 and C-13 NMR and the structure of eta(3)-[N(CO2Me)C6H3(2-p-MeC6H4SO2)(6-CO2Me)(5-Me)]Cp*RuCl was unequivocally established by X-ray crystallography.