BIFUNCTIONAL CATALYSTS FOR EXTENSIVE ISOMERIZATION OF UNSATURATED HYDROCARBONS
    11.
    发明申请
    BIFUNCTIONAL CATALYSTS FOR EXTENSIVE ISOMERIZATION OF UNSATURATED HYDROCARBONS 审中-公开
    用于不饱和烃的强化异构化的双官能催化剂

    公开(公告)号:US20090143585A1

    公开(公告)日:2009-06-04

    申请号:US12067790

    申请日:2006-09-21

    申请人: Douglas Grotjahn

    发明人: Douglas Grotjahn

    IPC分类号: C07C29/56 C07F15/00

    摘要: The current invention provides novel bifunctional catalysts. The bifunctional catalysts are prepared from phosphine ligands and a cyclopentadienyl metal complex and are useful for forming isomers of hydrocarbon species. The hydrocarbon can be an alkenol having the alkene and alcohol groups far apart and the catalyst will move the double bond across numerous carbon atoms. The hydrocarbon can also be an achiral alkenol and the catalyst will form a chiral alcohol therefrom. Moreover, deuterated water may be added to the isomerization reaction mixture for forming deuterated hydrocarbon species.

    摘要翻译: 本发明提供新的双功能催化剂。 双功能催化剂由膦配体和环戊二烯基金属络合物制备,可用于形成烃类异构体。 烃可以是具有较远的烯烃和醇基的烯醇,并且催化剂将跨越多个碳原子移动双键。 烃也可以是非手性链烯醇,催化剂由此形成手性醇。 此外,可以将氘代水加入用于形成氘化烃物质的异构化反应混合物中。

    Catalyst system and process for rearrangement of epoxides to allylic alcohols
    13.
    发明授权
    Catalyst system and process for rearrangement of epoxides to allylic alcohols 有权
    用于将环氧化物重排为烯丙醇的催化剂体系和方法

    公开(公告)号:US06835686B2

    公开(公告)日:2004-12-28

    申请号:US09899518

    申请日:2001-07-05

    IPC分类号: C07C2956

    摘要: A catalyst system comprising a primary catalyst chosen from one or more homogeneous or heterogeneous, inorganic, organic or complex metal-containing compound; and one or more phenolic activator/modifier(s). The catalyst system can be used for the preparation of allylic alcohols by rearrangement of corresponding epoxides, the subsequent Oppenauer type oxidation of allylic alcohols to alpha, beta-unsaturated carbonyl compounds, and/or the preparation of alpha, beta-unsaturated carbonyl compounds by rearrangement of epoxides to corresponding allylic alcohols followed by the subsequent Oppenauer type oxidation of allylic alcohols in a one pot process.

    摘要翻译: 一种催化剂体系,其包含选自一种或多种均相或不均匀的无机,有机或复合金属的化合物的主催化剂; 和一种或多种酚类活化剂/改性剂。 该催化剂体系可用于通过相应的环氧化物的重排来制备烯丙醇,随后的奥佩诺尔型将烯丙醇氧化成α,β-不饱和羰基化合物,和/或通过重排制备α,β-不饱和羰基化合物 的环氧化物与相应的烯丙基醇反应,随后在一锅法中随后进行烯丙醇的Oppenauer型氧化。

    Process for preparation of pharmaceutically desired enantiomers
    14.
    发明授权
    Process for preparation of pharmaceutically desired enantiomers 失效
    制备药学上需要的对映异构体的方法

    公开(公告)号:US06458955B1

    公开(公告)日:2002-10-01

    申请号:US09705304

    申请日:2000-11-03

    申请人: Mark J. Gattuso

    发明人: Mark J. Gattuso

    IPC分类号: C07C21310

    摘要: Improved processes for preparation of high enantiomeric purity compounds center on resolution using simulated moving bed chromatography of a racemic precursor early in the synthesis. Resolution is effected with high enantiomeric purity, and subsequent reactions of the desired enantiomer performed with high optical specificity to maintain enantiomeric purity. The undesired enantiomer is racemized and recycled to the resolution phase to avoid loss.

    摘要翻译: 制备高对映异构体纯度化合物的改进方法以合成前期的外消旋前体的模拟移动床层析为核心。 以高对映异构体纯度实现分辨率,并且所需对映异构体的后续反应以高光学特异性进行以维持对映体纯度。 将不需要的对映异构体外消旋化并再循环至分解相以避免损失。

    Process for producing isopulegol
    15.
    发明申请
    Process for producing isopulegol 失效
    异丙醇的制备方法

    公开(公告)号:US20020133046A1

    公开(公告)日:2002-09-19

    申请号:US10045157

    申请日:2002-01-15

    IPC分类号: C07C035/08

    摘要: A process for producing l-isopulegol by simple operations with safety in high yield. A process for producing isopulegol, which comprises selectively cyclizing citronellal in the presence of a tris(2,6-diarylphenoxy)aluminum catalyst represented by the following general formula (3): 1 wherein Al represents an aluminum atom, Ar1 and Ar2 each represent a substituted or unsubstituted aryl group or a heteroaryl group; and R1, R2 and R3 each represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 8 carbon atom(s), an alkoxy group having 1 to 8 carbon atom(s), a substituted or unsubstituted aryl group, a dialkylamino group having 1 to 4 carbon atom(s), or a nitro group.

    摘要翻译: 通过简单的操作以高产率安全地生产l-异头孢烯的方法。 一种生产异胡醇的方法,其包括在由以下通式(3)表示的三(2,6-二芳基苯氧基)铝催化剂存在下选择性环化香茅醛:其中Al表示铝原子,Ar 1和Ar 2各自表示取代的 或未取代的芳基或杂芳基; R 1,R 2和R 3各自表示氢原子,卤素原子,碳原子数1〜8的烷基,碳原子数1〜8的烷氧基,取代或未取代的芳基, 具有1〜4个碳原子的二烷基氨基或硝基。

    PROCESS FOR THE PRODUCTION OF XYLITOL
    16.
    发明申请
    PROCESS FOR THE PRODUCTION OF XYLITOL 失效
    生产XYLITOL的方法

    公开(公告)号:US20020076772A1

    公开(公告)日:2002-06-20

    申请号:US08680139

    申请日:1996-07-15

    IPC分类号: C12P007/18

    摘要: The present invention relates to a process for the production of xylitol. Specifically the process comprises two reaction steps. The first step is the fermentative conversion of a hexose to a pentitol. The second step is the catalytic chemical isomerisation of the pentitol to xylitol. Optionally, the xylitol is separated from the other pentitols.

    摘要翻译: 本发明涉及生产木糖醇的方法。 具体地说,该方法包括两个反应步骤。 第一步是将己糖发酵转化为戊糖醇。 第二步是将戊糖醇催化化学异构化成木糖醇。 任选地,将木糖醇与其它戊五醇分离。

    Rearrangement of epoxides
    20.
    发明授权
    Rearrangement of epoxides 失效
    环氧化物的重排

    公开(公告)号:US5750805A

    公开(公告)日:1998-05-12

    申请号:US704558

    申请日:1996-09-12

    IPC分类号: C07C29/56 C07C35/06

    摘要: Epoxides containing hydroxy groups are rearranged enantioselectively using a chiral base to give allyl alcohols in high enantiomeric excess, e.g. ##STR1## If R.sup.3 .noteq.H, the reaction also has the effect of generating a chiral tetrasubstituted carbon atom.

    摘要翻译: PCT No.PCT / GB95 / 00553 Sec。 371日期:1996年9月12日 102(e)日期1996年9月12日PCT 1995年3月15日PCT PCT。 WO95 / 25079 PCT出版物 日期1995年9月21日使用手性碱对包含羟基的含氧化物进行对映选择性重排,得到高对映异构体过量的烯丙醇。 如果R3 NOTEQUAL H,该反应也具有产生手性四取代碳原子的作用。