Method for the asymmetric dihydroxylation of olefins, using osmium catalysts
    4.
    发明授权
    Method for the asymmetric dihydroxylation of olefins, using osmium catalysts 失效
    使用锇催化剂对烯烃的不对称二羟基化反应的方法

    公开(公告)号:US06472570B1

    公开(公告)日:2002-10-29

    申请号:US09980504

    申请日:2001-10-19

    IPC分类号: C07C3326

    CPC分类号: C07C29/50 C07C33/26

    摘要: This invention relates to process for asymmetric dihydroxylation of olefins using osmium catalysts to obtain monofunctional, bifunctional, and/or polyfunctional chiral 1,2-diols of the formula (I) R1R2C(OH)—C(OH)R3R4  (I) where R1 to R4 are defined herein, by reacting an olefin of the formula (II) R1R2C═CR3R4  (II) where R1 to R4 are defined as for formula (I), with molecular oxygen in the presence of an osmium compound and a chiral amine ligand in water or a water-containing solvent mixture at a pH of from 8.5 to 13.

    摘要翻译: 本发明涉及使用锇催化剂来获得烯烃不对称二羟基化的方法,以获得式(I)的单官能,双功能和/或多官能的手性1,2-二醇,其中R 1至R 4在本文中定义,通过使式 (II)其中R 1至R 4如式(I)所定义,分子氧在锇化合物和手性胺配体存在下在水或含水溶剂混合物中的pH为8.5至13。

    Optical ADD-DROP module which can be expanded modularly
    5.
    发明授权
    Optical ADD-DROP module which can be expanded modularly 有权
    光学ADD-DROP模块可以模块化扩展

    公开(公告)号:US06795606B2

    公开(公告)日:2004-09-21

    申请号:US09957367

    申请日:2001-09-20

    IPC分类号: G02B628

    摘要: In a first ADD-DROP module, a WDM signal is supplied to a first filter arrangement which selects two channels and supplies the remaining channels to a cascading switching device. The channels selected by the first filter device can be dropped by an ADD-DROP switching device or switched through the module. The ADD channels switched through or newly added are combined with the remaining channels in an ADD filter arrangement to form a newly configured WDM output signal. A further ADD-DROP module (M2) which allows two further channels to be dropped and added can be connected, in turn, via cascading terminals.

    摘要翻译: 在第一ADD-DROP模块中,将WDM信号提供给选择两个通道的第一滤波器装置,并将剩余信道提供给级联交换装置。 由第一滤波器装置选择的信道可以由ADD-DROP开关装置丢弃或通过模块切换。 ADD通道或新添加的ADD通道与ADD滤波器配置中的其余通道相结合,形成新配置的WDM输出信号。 另外可以通过级联端子连接另一个允许丢弃和添加两个其他通道的ADD-DROP模块(M2)。