会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • 2,2′,6,6′-tetrasubstituted aminophosphine ligand and its synthesis method
    • 2,2',6,6'-四取代氨基膦配体及其合成方法
    • US08729303B2
    • 2014-05-20
    • US12377000
    • 2007-08-10
    • Wanbin ZhangFang XieFang Fang
    • Wanbin ZhangFang XieFang Fang
    • C07F9/02
    • C07F9/46
    • The present invention relates to a 2,2′,6,6′-tetrasubstituted aminophosphine ligand and its synthesis method. The structure of the ligand is shown as below. Its synthesis method comprises: Step (1) coupling 2,6-dinitrochlorobenzene as the starting material to obtain 2,2′,6,6′-tetranitrobiphenyl; Step (2): hydrogenating the 2,2′,6,6′-tetranitrobiphenyl with Pd/C to obtain 2,2′,6,6′-tetraminobiphenyl; Step (3): reacting the 2,2′,6,6′-tetraminobiphenyl with a phosphine halide to obtain the 2,2′,6,6′-tetrasubstituted aminophosphine ligand. The ligand of the present invention is an achiral compound, and its preparation method is simple. The ligand can be converted to a chiral bimetallic catalyst with single configuration eventually through introduction of external chirality. Moreover, the ligand can be used in various asymmetric reaction catalyzed by metals with high reactivity and stereoselectivity.
    • 本发明涉及2,2',6,6'-四取代氨基膦配体及其合成方法。 配体的结构如下所示。 其合成方法包括:步骤(1)以2,6-二硝基氯苯为原料,得到2,2',6,6'-四硝基联苯; 步骤(2):用Pd / C氢化2,2',6,6'-四硝基二苯并得到2,2',6,6'-四氨基联苯; 步骤(3):使2,2',6,6'-四磺酰联苯与卤化膦反应,得到2,2',6,6'-四取代氨基膦配体。 本发明的配体是非手性化合物,其制备方法简单。 最终可以通过引入外部手性将配体转化为具有单一配置的手性双金属催化剂。 此外,配体可用于由具有高反应性和立体选择性的金属催化的各种不对称反应中。