SELECTIVE OXIDATION OF TRITERPENES EMPLOYING TEMPO
    94.
    发明公开
    SELECTIVE OXIDATION OF TRITERPENES EMPLOYING TEMPO 审中-公开
    三萜类化合物的选择性氧化节奏使用

    公开(公告)号:EP1869062A1

    公开(公告)日:2007-12-26

    申请号:EP06740130.7

    申请日:2006-03-29

    IPC分类号: C07J63/00

    CPC分类号: C07J63/008

    摘要: The present invention provides a process of preparing betulin-28-aldehyde from betulin. The process includes contacting betulin with a compound of formula (I), e.g., TEMPO (2,2,6,6-tetramethylpiperidine 1-oxyl) for a period of time effective to provide betulin-28-aldehyde. The present invention also provides a process of preparing betulinic acid. The process includes contacting betulin with a composition that includes: sodium hypochlorite (NaOCl); sodium chlorite (NaClO2), potassium chlorite (KClO2), or a combination thereof; and a compound of formula (I), e.g., TEMPO (2,2,6,6-tetramethylpiperidine 1-oxyl); for a period of time effective to provide betulinic acid.

    FINES REMOVAL APPARATUS AND METHODS/SYSTEMS REGARDING SAME
    98.
    发明公开
    FINES REMOVAL APPARATUS AND METHODS/SYSTEMS REGARDING SAME 审中-公开
    细小燃料消除装置与有关过程/系统

    公开(公告)号:EP1799362A2

    公开(公告)日:2007-06-27

    申请号:EP05784300.5

    申请日:2005-08-11

    IPC分类号: B07C5/00

    CPC分类号: B07B1/10 B07B13/05 B07B15/00

    摘要: Apparatus, methods and systems are used to separate fines from objects of a feed mixture being processed (e.g., iron bearing pellets, chips and dust). For example, at least a portion of an endless belt defining a channel is movable up an incline relative to horizontal (e.g., an incline that is at an angle relative to horizontal that is greater than an angle of repose associated with the objects, but less than an angle of repose associated with the fines being removed). Further, obstruction elements may be used on the endless belt to impede the flow of the fines down the incline.