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    • 50. 发明申请
    • C2-SYMMETRICAL RUTHENOCENE DIPHOSPHINE LIGANDS ONLY WITH SURFACE CHIRALITY AND THEIR MANUFACTURE
    • C2-对称二硫代磷酸酯配体仅具有表面光洁度及其制造
    • US20110160474A1
    • 2011-06-30
    • US12303767
    • 2007-06-08
    • Wanbin ZhangFang XieDelong LiuLi LuoGenghong HuaJian Shang
    • Wanbin ZhangFang XieDelong LiuLi LuoGenghong HuaJian Shang
    • C07F17/02
    • C07F17/02B01J31/2295B01J31/24B01J31/2409B01J2531/0205B01J2531/0263B01J2531/821
    • The invention affords C2-symmetrical ruthenocene diphosphine ligands with surface chirality and their manufacture. The present invention uses (S)—(S)-1,1′-2(diphenylphosphino)-2,2′-2[(S)-4-isopropyloxazolinyl]ruthenocene as raw material and the product is prepared through two or three steps of reaction. At the action of trifluoroacetic acid, (S)—(S)-1,1′-2(diphenylphosphino)-2,2′-2[(S)-4-isopropyloxazolinyl]ruthenocene first removes oxazoline and gets ester amides compound which then carries out ester exchange or reduction alkylation and gets the product of ruthenocene diphosphine ligand with surface chirality. The ligands prepared with the structure as follows from the invention can be used in all kinds of metallic catalysis asymmetric reaction and has good reaction activity and stereoselectivity, wherein R is methyl or ethyl, R1 is linear or branched alkyl, cycloalkyl, alkoxy, aryl, aralkyl and alkyl amino.
    • 本发明提供具有表面手性及其制造的C2对称的二茂铁二膦配体。 本发明使用(S) - (S)-1,1'-2(二苯基膦基)-2,2'-2 [(S)-4-异丙唑恶唑啉基] rut烯为原料,通过2或3 反应步骤。 在三氟乙酸的作用下,(S) - (S)-1,1'-2(二苯基膦基)-2,2'-2 [(S)-4-异丙基恶唑啉基] rut hen ene首先除去恶唑啉并得到酯酰胺化合物, 然后进行酯交换或还原烷基化,得到具有表面手性的钌基二膦配体的产物。 由本发明制备的具有如下结构的配位体可用于各种金属催化不对称反应,具有良好的反应活性和立体选择性,其中R为甲基或乙基,R 1为直链或支链烷基,环烷基,烷氧基,芳基, 芳烷基和烷基氨基。