Process for preparing 5-ethylidene-2-norbornene with high quality
    1.
    发明授权
    Process for preparing 5-ethylidene-2-norbornene with high quality 失效
    高品质制备5-亚乙基-2-降冰片烯的方法

    公开(公告)号:US4727204A

    公开(公告)日:1988-02-23

    申请号:US943067

    申请日:1986-12-18

    IPC分类号: B01J23/04 C07C5/25

    CPC分类号: B01J23/04 C07C5/2556

    摘要: 5-Ethylidene-2-norbornene with high quality is effectively prepared by isomerization 5-vinyl-2-norbornene containing 1 ppm to 0.5% by weight of 4-vinylcyclohexene in the presence of at least one catalyst selected from the group consisting of a solid base catalyst which is prepared by reacting alumina, an alkali metal hydroxide and an alkali metal in a temperature range of 200.degree. to 500.degree. C. and a solid base catalyst which is prepared by reacting water-containing alumina and an alkali metal in such an amount that exceeds a molar equivalent of water contained in alumina at a temperature in a range between a melting point of the alkali metal and 500.degree. C. in an inert gas atmosphere.

    摘要翻译: 在至少一种选自固体的催化剂存在下,通过异构化含有1ppm至0.5重量%的4-乙烯基环己烯的5-乙烯基-2-降冰片烯有效地制备了高质量的5-亚乙基-2-降冰片烯 碱催化剂,其通过使氧化铝,碱金属氢氧化物和碱金属在200〜500℃的温度范围内反应而制备,固体碱催化剂是通过使含水氧化铝和碱金属在这种 在惰性气体气氛下,在碱金属的熔点和500℃之间的温度范围内,超过摩尔当量的氧化铝中的水分。

    Process for preparing alkyl-substituted aromatic hydrocarbons
    2.
    发明授权
    Process for preparing alkyl-substituted aromatic hydrocarbons 失效
    制备烷基取代芳烃的方法

    公开(公告)号:US5347062A

    公开(公告)日:1994-09-13

    申请号:US21852

    申请日:1993-02-24

    IPC分类号: C07C2/72 C07C2/66

    摘要: An alkyl-substituted hydrocarbon is prepared by alkylating an aromatic hydrocarbon having at least one hydrogen atom at an alpha-position in a side chain with an olefin in the presence of a solid base which is obtainable by heating an alumina, an alkali metal hydroxide and an alkali metal or an alumina containing at least 1.3% by weight of water and an alkali metal in an inert gas atmosphere at a specific temperature as a catalyst.

    摘要翻译: 烷基取代的烃是通过在固体碱的存在下,通过将烯烃在侧链的α位上具有至少一个氢原子的芳族烃烷基化而制备的,该固体碱可以通过加热氧化铝,碱金属氢氧化物和 碱金属或含有至少1.3重量%水和碱金属的氧化铝在惰性气体气氛中作为催化剂。

    Process for preparing alkyl-subtituted aromatic hydrocarbons
    3.
    发明授权
    Process for preparing alkyl-subtituted aromatic hydrocarbons 失效
    制备烷基取代的芳烃的方法

    公开(公告)号:US5227559A

    公开(公告)日:1993-07-13

    申请号:US815889

    申请日:1992-01-07

    IPC分类号: C07C2/72

    摘要: An alkyl-substituted hydrocarbon is prepared by alkylating an aromatic hydrocarbon having at least one hydrogen atom at an alpha-position in a side chain with an olefin in the presence of a solid base which is obtainable by heating an alumina, an alkali metal hydroxide and an alkali metal or an alumina containing at least 1.3% by weight of water and an alkali metal in an inert gas atmosphere at a specific temperature as a catalyst.

    摘要翻译: 烷基取代的烃是通过在固体碱的存在下,通过将烯烃在侧链的α位上具有至少一个氢原子的芳族烃烷基化而制备的,该固体碱可以通过加热氧化铝,碱金属氢氧化物和 碱金属或含有至少1.3重量%水和碱金属的氧化铝在惰性气体气氛中以特定温度作为催化剂。

    Process for the preparation of hydroxybenzaldehydes
    4.
    发明授权
    Process for the preparation of hydroxybenzaldehydes 失效
    制备羟基苯甲醛的方法

    公开(公告)号:US4584410A

    公开(公告)日:1986-04-22

    申请号:US670847

    申请日:1984-11-13

    CPC分类号: C07C45/008

    摘要: In a Reimer-Tiemann reaction for the preparation of a mixture of two hydroxybenzaldehydes (i.e., salicylaldehyde and p-hydroxybenzaldehyde) by reacting phenol with chloroform and an aqueous alkali solution in a heterogeneous system, the two hydroxybenzaldehydes can be prepared in a controlled formation ratio, yield and reaction rate depending upon the conditions used when the reaction is carried out in the presence of a phase transfer catalyst selected from the group consisting of a cationic type phase transfer catalyst, an amphoteric type phase transfer catalyst and an anionic type phase transfer catalyst.

    摘要翻译: 在通过使苯酚与氯仿和非均相体系中的碱性水溶液反应制备两种羟基苯甲醛(即水杨醛和对羟基苯甲醛)的混合物的Reimer-Tiemann反应中,两种羟基苯甲醛可以以受控的形成比 ,产率和反应速率取决于反应在相转移催化剂存在下使用的条件,所述相转移催化剂选自阳离子型相转移催化剂,两性相转移催化剂和阴离子型相转移催化剂 。

    Solid base, process for producing the same and process of preparing
internal olefins
    7.
    发明授权
    Solid base, process for producing the same and process of preparing internal olefins 失效
    固体碱,其制备方法和制备内烯烃的方法

    公开(公告)号:US4992612A

    公开(公告)日:1991-02-12

    申请号:US391243

    申请日:1989-08-09

    IPC分类号: B01J23/04 C07C5/25

    CPC分类号: B01J23/04 C07C5/2556

    摘要: A solid base obtainable by heating and reacting an alkaline earth metal compound with alumina at a temperature of from 300.degree. to 600.degree. C. and then heating and reacting the reaction product with at least one material selected from the group consisting of alkali metals and hydrides of alkali metals in an inert gas atmosphere at a temperature of from 200.degree. to 450.degree. C., which can catalyze various reaction, for example, isomerization of an olefinic double bond.