Ring-opening process for preparation of 2-chlorosulfinyl azetidinones
    104.
    发明授权
    Ring-opening process for preparation of 2-chlorosulfinyl azetidinones 失效
    开环制备2-氯亚磺酰基氮杂环丁酮的方法

    公开(公告)号:US5070195A

    公开(公告)日:1991-12-03

    申请号:US490151

    申请日:1990-03-07

    CPC classification number: C07D501/00 C07D205/095

    Abstract: An improved method for preparing 2-chlorosulfinyl azetidine-4-one comprises heating a penicillin sulfoxide ester with an N-chlorohalogenating agent at a temperature of about 75.degree. C. to about 140.degree. in an inert organic solvent, and in the presence of an organic solvent insoluble, strongly basic ion exchange resin. Desirably, the ion exchange resin comprises a styrene-divinyl benzane copolymer which is about 2 to 16% cross-linked and incorporates a quaternary ammonium functionality. Such ion exchange resins are commercially available. The 2-chlorosulfinyl azetidine-4-one which is produced by this method can be cyclized in the presence of a Friedel-Crafts catalysts to afford the 3-exomethylene cepham sulfoxide ester in yields of 80-90%.

    Abstract translation: 制备2-氯亚磺酰基氮杂环丁烷-4-酮的改进方法包括在惰性有机溶剂中,在约75℃至约140℃的温度下,用N-氯代卤化剂加热青霉素亚砜酯,并在 有机溶剂不溶,强碱性离子交换树脂。 期望地,离子交换树脂包含交联的约2至16%的苯乙烯 - 二乙烯基苯基共聚物并结合季铵官能团。 这样的离子交换树脂是可商购的。 通过该方法制备的2-氯亚磺酰基氮杂环丁烷-4-酮可以在Friedel-Crafts催化剂存在下环化,得到3-异亚甲基头孢烯亚砜酯,产率为80-90%。

    Method for remotely upgrading the firmware of a target device using wireless technology
    107.
    发明授权
    Method for remotely upgrading the firmware of a target device using wireless technology 有权
    使用无线技术远程升级目标设备的固件的方法

    公开(公告)号:US08589908B2

    公开(公告)日:2013-11-19

    申请号:US11606644

    申请日:2006-11-29

    CPC classification number: G06F8/65

    Abstract: An embodiment of the present invention provides a system and method for remotely upgrading the firmware of a target device using wireless technology from the Bluetooth-enabled PC or Laptop to another Bluetooth device e.g., mouse, Keyboard, headset, mobile phone etc. Existing solutions either may not have upgrade capabilities, or may require the use of proprietary cables. An embodiment of the solution proposed here extends the “Connecting without cables” concept of Bluetooth to firmware upgrades. The system comprises a host device for sending the firmware required for upgradation; and a target device containing a first code and a second code wherein said first code identifies details of the firmware; and said second code identifies the completion of the download operation when the firmware is successfully downloaded.

    Abstract translation: 本发明的一个实施例提供一种用于使用无线技术将蓝牙功能的PC或笔记本电脑远程升级到另一蓝牙设备(例如鼠标,键盘,耳机,移动电话等)的目标设备的固件的系统和方法。现有的解决方案 可能没有升级功能,或可能需要使用专有电缆。 这里提出的解决方案的一个实施例将蓝牙的“无电缆连接”概念扩展到固件升级。 该系统包括用于发送升级所需的固件的主机设备; 以及包含第一代码和第二代码的目标设备,其中所述第一代码识别固件的细节; 并且所述第二代码在固件被成功下载时识别下载操作的完成。

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