Process for the preparation of 5-hydroxymethylthiazoles
    33.
    发明授权
    Process for the preparation of 5-hydroxymethylthiazoles 失效
    5-羟甲基噻唑的制备方法

    公开(公告)号:US5959118A

    公开(公告)日:1999-09-28

    申请号:US921399

    申请日:1997-08-29

    申请人: Michael S. Allen

    发明人: Michael S. Allen

    摘要: The present invention discloses a process for the preparation of a hydroxymethylthiazole compound having formula 3: The process of the invention comprises reacting a halomethyl thiazole having the formula: ##STR1## with water, at an elevated temperature. Optionally, the reaction can be carried out in the presence of a base, such as sodium carbonate, which can react with any acid formed. In the process of the invention, X is a halogen atom; and R.sup.6 is selected from the group consisting of hydrogen, and halogen atoms. The invention also contemplates the preparation of acid addition salts of the hydroxymethylthiazole, compound 3.

    摘要翻译: 本发明公开了一种制备具有式3的羟甲基噻唑化合物的方法:本发明的方法包括使具有下式的卤代甲基噻唑与水在升高的温度下反应。 任选地,反应可以在诸如碳酸钠的碱的存在下进行,所述碱可以与任何形成的酸反应。 在本发明的方法中,X是卤素原子; 并且R 6选自氢和卤素原子。 本发明还考虑了羟甲基噻唑化合物3的酸加成盐的制备。

    System for initiating data transfer between input/output devices having
separate address spaces in accordance with initializing information in
two address packages
    34.
    发明授权
    System for initiating data transfer between input/output devices having separate address spaces in accordance with initializing information in two address packages 失效
    用于根据两个地址包中的初始化信息在具有单独的地址空间的输入/输出设备之间启动数据传输的系统

    公开(公告)号:US5603057A

    公开(公告)日:1997-02-11

    申请号:US560504

    申请日:1995-11-17

    IPC分类号: G06F13/42 G06F13/00

    CPC分类号: G06F13/4217

    摘要: A method and system in a data processing system for transferring data from a first device to a second device within the data processing system. The data processing system includes a data bus, an address bus, a first address space associated with a memory and a second address space associated with an input/output device. Initially, a transfer signal is transmitted in the data processing system. The transfer signal identifies the transfer as a transfer concerning an address in the second address space associated with the input/output device. A first address package is then transmitted to the second device from the first device on the address bus. The first address package includes a transfer identifier, a first identifier associated with the first device and a second identifier associated with the second device. A second address package, comprising a byte count and an address, are transmitted to the second device from the first device on the address bus. If data is to be transferred, the data is then transferred on the data bus. Finally, a reply signal may be transmitted between the first and second devices, acknowledging the success or failure of the data transfer.

    摘要翻译: 一种用于在数据处理系统内将数据从第一设备传送到第二设备的数据处理系统中的方法和系统。 数据处理系统包括数据总线,地址总线,与存储器相关联的第一地址空间和与输入/输出设备相关联的第二地址空间。 最初,在数据处理系统中传送传送信号。 传送信号将传送标识为关于与输入/输出设备相关联的第二地址空间中的地址的传送。 然后,第一地址包从地址总线上的第一设备发送到第二设备。 第一地址包包括传送标识符,与第一设备相关联的第一标识符和与第二设备相关联的第二标识符。 包括字节计数和地址的第二地址包从地址总线上的第一设备发送到第二设备。 如果要传输数据,则数据在数据总线上传输。 最后,可以在第一和第二设备之间传送应答信号,确认数据传输的成功或失败。