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    • 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。
    • 8. 发明申请
    • Computerized tomography image reconstruction
    • 计算机断层扫描图像重建
    • US20090046830A1
    • 2009-02-19
    • US12287514
    • 2008-10-10
    • Fang-Fang Yin
    • Fang-Fang Yin
    • A61B6/00
    • A61B6/482A61B6/032A61B6/466A61B6/583
    • Systems and methods include coordinated (KV) and megaelectronvolt (MV) computerized tomography (CT) imaging. KV and MV data are combined using a normalization process in order to generate CT images. The resulting CT images can include an improved signal to noise ratio in comparison to CT images generated using either KV or MV imaging alone. The coordinated KV and MV imaging process may be accomplished in significantly less time than using KV or MV imaging alone. This time savings has advantages in treatment verification. The MV projections are optionally generated using MV x-rays configured for x-ray treatment. In these cases the combined projections will reflect the treatment volume.
    • 系统和方法包括协调(KV)和兆伏特(MV)计算机断层摄影(CT)成像。 使用归一化处理来组合KV和MV数据以产生CT图像。 与使用KV或MV成像单独产生的CT图像相比,所得到的CT图像可以包括改善的信噪比。 协调的KV和MV成像过程可以在比单独使用KV或MV成像的时间更短的时间内完成。 这次节省在治疗验证中有优势。 可以使用配置用于X射线处理的MV x射线来生成MV投影。 在这些情况下,组合预测将反映治疗量。
    • 9. 发明授权
    • Computerized tomography image reconstruction
    • 计算机断层扫描图像重建
    • US07453976B1
    • 2008-11-18
    • US11193160
    • 2005-07-29
    • Fang-Fang Yin
    • Fang-Fang Yin
    • G01N23/00
    • A61B6/482A61B6/032A61B6/466A61B6/583
    • Systems and methods include coordinated (KV) and megaelectronvolt (MV) computerized tomography (CT) imaging. KV and MV data are combined using a normalization process in order to generate CT images. The resulting CT images can include an improved signal to noise ratio in comparison to CT images generated using either KV or MV imaging alone. The coordinated KV and MV imaging process may be accomplished in significantly less time than using KV or MV imaging alone. This time savings has advantages in treatment verification. The MV projections are optionally generated using MV x-rays configured for x-ray treatment. In these cases the combined projections will reflect the treatment volume.
    • 系统和方法包括协调(KV)和兆伏特(MV)计算机断层摄影(CT)成像。 使用归一化处理来组合KV和MV数据以产生CT图像。 与使用KV或MV成像单独产生的CT图像相比,所得到的CT图像可以包括改善的信噪比。 协调的KV和MV成像过程可以在比单独使用KV或MV成像的时间更短的时间内完成。 这次节省在治疗验证中有优势。 可以使用配置用于X射线处理的MV x射线来生成MV投影。 在这些情况下,组合预测将反映治疗量。