Pentamethylcyclopentadienyl-iridium(<scp>iii</scp>) complexes with pyridylamino ligands: synthesis and applications as asymmetric catalysts for Diels–Alder reactions
作者:Daniel Carmona、M. Pilar Lamata、Fernando Viguri、Ricardo Rodríguez、Fernando J. Lahoz、Isabel T. Dobrinovitch、Luis A. Oro
DOI:10.1039/b618720j
日期:——
[Cp*Ir(pyam)(H2O)][SbF6]26–10 which have been also fully characterised. The molecular structure of the complex (SIr,RN,RC)–[Cp*IrL1(H2O)][SbF6]26 has been determined by X-ray diffractometric methods. The aqua complexes [Cp*Ir(pyam)(H2O)][SbF6]2 (6, pyam = L2 (7), L3 (8)) evolve to the cyclometallated species [Cp*Irκ3(N,N′,C)-(R)-(C6H4)CH(CH3)NHCH2C5NH4}][SbF6] (11), [Cp*Irκ3(N,N′,C)-(R)-(C10H6)CH(CH3)NHCH2C5NH4)}][SbF6]
Chiral pyridylamino-ruthenium(ii) complexes: synthesis, structure and catalytic properties in Diels–Alder reactions
作者:Daniel Carmona、M. Pilar Lamata、Fernando Viguri、Ricardo Rodríguez、Fernando J. Lahoz、Isabel T. Dobrinovitch、Luis A. Oro
DOI:10.1039/b802381f
日期:——
[(eta(6)-arene)Ru(pyam)(H(2)O)](2+) which act as enantioselective catalysts for the Diels-Alderreactions of methacrolein and cyclopentadiene. The catalytic reactions occur quickly at room temperature with good exo : endo selectivity (from 84 : 16 to 98 : 2) and moderate enantioselectivity (up to 74% ee). The molecular structures of the chloride complexes (R(Ru),S(N),R(C))-[(eta(6)-p-MeC(6)H(4)iPr)RuClL(1)][SbF(6)]