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• W2005334384 endingPage "1983" @default.
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• W2005334384 abstract "Arylations of (R)-2,2′-diamino-6,6′-dimethylbiphenyl and the corresponding racemic compound under palladium catalysis gives a range of C2-symmetric secondary amine proligands H2L. The 3,5-di-tert-butylphenyl substituted compound reacts with the silylamides [M{N(SiMe2H)2}3(THF)2] (M=Y, Sm, La) to produce (±)-[ML{N(SiMe2H)2}(THF)2]. However, deprotonation of more sterically hindered proligands H2L proceeded very slowly, but the reaction with the more basic akylamide [Y(NiPr2)3(THF)2] gave [YL1-4(NiPr2)(THF)2] readily. Such catalysts formed in situ from the amine proligand H2L and metal amide, cyclised 2,2′-dimethylaminopent-4-ene to the corresponding pyrrolidine with enantiomeric excesses up to 50%. The alkylamide catalysts gave significantly faster turnover than the silylamides." @default.
• W2005334384 created "2016-06-24" @default.
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• W2005334384 date "2003-07-01" @default.
• W2005334384 modified "2023-10-17" @default.
• W2005334384 title "Biaryl amine ligands for lanthanide catalysed enantioselective hydroamination/cyclisation of aminoalkenes" @default.
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• W2005334384 doi "https://doi.org/10.1016/s0957-4166(03)00429-4" @default.
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