Preparation of norlabdane oxide
    1.
    发明授权
    Preparation of norlabdane oxide 失效
    正壬醛的制备

    公开(公告)号:US5821375A

    公开(公告)日:1998-10-13

    申请号:US905116

    申请日:1997-08-01

    CPC分类号: C07D307/92

    摘要: The invention concerns a process for preparing (-)-norlabdane oxide from sclareol oxide comprising the steps of: I converting sclareol oxide to 12-acetylnorlabdane oxide by oxidation with an organic hydroperoxide; II converting 12-acetylnorlabdane oxide to 12-acetoxy-norlabdane oxide by oxidation with an organic peracid. Step I is preferably performed with tert-butyl hydroperoxide and step II with peracetic acid. Sclareol oxide may be prepared from sclareol by ozonolysis followed by treatment with alkaline hydrogen peroxide. 12-Acetoxy-norlabdane oxide is preferably converted to norlabdane oxide by reduction with NaBH.sub.4 in the presence of a transition metal salt.

    摘要翻译: 本发明涉及一种从香紫苏氧化物制备( - ) - 正丙氧烷的方法,包括以下步骤:通过用有机氢过氧化物氧化将香紫苏氧化物转化为12-乙酰基壬二醛氧化物; II通过用有机过酸氧化将12-乙酰基壬二醛氧化物转化为12-乙酰氧基 - 正十二烷氧化物。 步骤I优选用叔丁基过氧化氢进行,步骤II用过乙酸进行。 氧氟沙星可以通过臭氧分解由香紫苏醇制备,然后用碱性过氧化氢处理。 12-乙酰氧基 - 正壬基氧化物优选通过在过渡金属盐存在下用NaBH 4还原而转化为正壬醛。

    Preparation of carvone
    2.
    发明授权
    Preparation of carvone 失效
    香芹酮的制备

    公开(公告)号:US06500989B1

    公开(公告)日:2002-12-31

    申请号:US09913877

    申请日:2001-12-04

    IPC分类号: C07C4500

    摘要: A process for the preparation of carvone comprises hydrogenating carvoxime in the presence of a selecively poisoned catalyst. Preferred catalysts include noble metals supported on inorganic materials poisoned with a catalyst modifier. In a preferred embodiment of the process defined herein, the crude carvone reaction product produced in accordance with the process of the invention, is purified by treating the crude carvone product with an organometallic compound M(X)n wherein M is a polyvalent metal, n is the valence of M and X denotes an inorganic or organic atom or group.

    摘要翻译: 用于制备香芹酮的方法包括在选择性中毒的催化剂存在下氢化龋齿。 优选的催化剂包括负载在用催化剂改性剂中毒的无机材料上的贵金属。 在本文定义的方法的优选实施方案中,根据本发明方法生产的粗肉酮反应产物通过用有机金属化合物M(X)n处理粗制酮产物来纯化,其中M是多价金属,n 是M的化合价,X表示无机或有机原子或基团。

    Preparation of norlabdane oxide
    3.
    发明授权
    Preparation of norlabdane oxide 有权
    正壬醛的制备

    公开(公告)号:US06380404B1

    公开(公告)日:2002-04-30

    申请号:US09806835

    申请日:2001-05-29

    IPC分类号: C07D30792

    CPC分类号: C07D307/92

    摘要: Norlabdane oxide, which is a well known fragrance material having ambergris-type odors, is prepared from 12-acetoxy-norlabdane oxide by a hydrogenation reaction.

    摘要翻译: 通过氢化反应由12-乙酸基 - 正辛烷氧化物制备作为具有琥珀酸型气味的众所周知的香料的诺拉普丹氧化物。