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    • 1. 发明申请
    • CHIRAL LIGANDS
    • US20110275826A1
    • 2011-11-10
    • US13141379
    • 2009-12-22
    • Andreas PfaltzMarcus Georg SchremsBenoît Pugin
    • Andreas PfaltzMarcus Georg SchremsBenoît Pugin
    • C07F15/00C07F7/18C07F9/653
    • C07F9/653C07B53/00C07F15/0033
    • Chiral compounds of the formula (1), which are optically pure or highly optically enriched in which R0 is C1-C12-alkyl which is unsubstituted or substituted by 1 to 2 C1-C4-alkoxy; cyclo-pentyl or cyclohexyl, which is unsubstituted or substituted by 1 to 3 C1-C4-alkyl or C1-C4-alkoxy; or benzyl, phenyl or naphtyl which is unsubstituted or substituted by 1 to 3 C1-C4-alkyl, C1-C4-alkoxy, C1-C4-fluoroalkyl or C1-C4-fluoroalkoxy, F or Cl, or R0 is —CR5R6OH or —CR5R6OSi(C1-C8-alkyl)3 wherein R5 and R6 are independently selected from the group consisting of H, unsubstituted C1-C12 alkyl, substituted C1-C12 alkyl, unsubstituted C4-C8 cyclo alkyl, substituted C4-C8 cyclo alkyl, unsubstituted aryl, substituted aryl or wherein R5 and R6 can form an unsubstituted 5-6 membered aliphatic carbocycle or a substituted 5-6 membered aliphatic carbocycle, each of R1 and R′1 independently is hydrogen or has the meaning of R0 whereby R1, R′1 and R0 can be same or different, R2 and R3 are independently a C-bonded hydrocarbon radical or a heterohydrocarbon radical, and each of both R4 is C1-C6-alkyl, cyclopentyl, cyclohexyl, phenyl, methylphenyl, methylbenzyl or benzyl, or both R4 together form an aliphatic C4-C6 carbocycle. Metal complexes of these ligands are homogeneous catalysts for asymmetric addition reaction, particularly hydrogenations.
    • 式(1)的手性化合物,其是光学纯的或高度光学富集的,其中R 0是未被取代或被1至2个C 1 -C 4 - 烷氧基取代的C 1 -C 12 - 烷基; 环戊基或环己基,其是未取代的或被1至3个C 1 -C 4 - 烷基或C 1 -C 4 - 烷氧基取代; 或未被取代或被1至3个C 1 -C 4 - 烷基,C 1 -C 4 - 烷氧基,C 1 -C 4 - 氟代烷基或C 1 -C 4 - 氟烷氧基,F或Cl或R 10表示的苄基,苯基或萘基是-CR 5 R 6 OH或 - CR5R6OSi(C1-C8-烷基)3,其中R5和R6独立地选自H,未取代的C1-C12烷基,取代的C1-C12烷基,未取代的C4-C8环烷基,取代的C4-C8环烷基,未取代的 芳基,取代的芳基或其中R5和R6可以形成未取代的5-6元脂族碳环或取代的5-6元脂族碳环,R 1和R'1各自独立地是氢或具有R 0的含义,其中R 1,R' 1和R 0可以相同或不同,R2和R3独立地是C键合的烃基或杂烃基,并且R 2各自为C 1 -C 6 - 烷基,环戊基,环己基,苯基,甲基苯基,甲基苄基或苄基,或 R4一起形成脂族C 4 -C 6碳环。 这些配体的金属络合物是用于不对称加成反应,特别是氢化的均相催化剂。