Process for preparing cyclopentenolones
    2.
    发明授权
    Process for preparing cyclopentenolones 失效
    环戊烯酮的制备方法

    公开(公告)号:US4510329A

    公开(公告)日:1985-04-09

    申请号:US211225

    申请日:1980-11-28

    IPC分类号: C07C45/59

    CPC分类号: C07C45/59

    摘要: A process for preparing cyclopentenolones of the formula ##STR1## wherein R.sub.1 is an alkyl group having not more than 6 carbon atoms, an alkenyl or alkynyl group having not more than 6 carbon atoms or a group of the formula: ##STR2## in which R.sub.2 is a hydrogen atom, a methyl group or a halogen atom directly from the corresponding furan-carbinols of the formula: ##STR3## wherein R.sub.1 is as defined above in a single step with an excellent yield, characterized in that the furan-carbinols are treated with water in the presence or absence of a catalyst.

    摘要翻译: 一种制备式IMA的环戊烯酮的方法,其中R 1是不大于6个碳原子的烷基,具有不超过6个碳原子的烯基或炔基或下式的基团:其中R 2 是直接来自相应的呋喃 - 甲醇的氢原子,甲基或卤素原子,其结构式如下:其中R1在单一步骤中具有优异的收率,其特征在于呋喃 - 甲醇被处理 在存在或不存在催化剂的情况下使用水。

    Process for preparing cyclopentenolones
    3.
    发明授权
    Process for preparing cyclopentenolones 失效
    环戊烯酮的制备方法

    公开(公告)号:US4347386A

    公开(公告)日:1982-08-31

    申请号:US256570

    申请日:1981-04-22

    IPC分类号: C07C45/67

    CPC分类号: C07C45/67

    摘要: A process for preparing cyclopentenolones in good yields which comprises treating a 4-hydroxy-4-R.sub.2 -5-R.sub.1 -2-cyclopentenone of the formula: ##STR1## wherein R.sub.1 is an alkyl group having not more than 6 carbon atoms, an alkenyl group having not more than 6 carbon atoms, an alkynyl group having not more than 6 carbon atoms or a group of the formula: ##STR2## (in which R.sub.3 is hydrogen, methyl or halogen) and R.sub.2 is a hydrogen atom or a methyl group, provided that when R.sub.2 is hydrogen, R.sub.1 is neither .alpha.-methylallyl nor .alpha.-methylpropargyl, in an aqueous medium in the presence or absence of a metal salt at a temperature of 20.degree. to 200.degree. C. to give the corresponding 2-R.sub.1 -3-R.sub.2 -4-hydroxy-2-cyclopentenone of the formula: ##STR3## wherein R.sub.1 and R.sub.2 are each as defined above.

    摘要翻译: 一种以良好的产率制备环戊烯酮的方法,包括处理下式的4-羟基-4-R2-5-R1-2-环戊烯酮:其中R 1是不大于6个碳原子的烷基,烯基 具有不超过6个碳原子的基团,具有不超过6个碳原子的炔基或下式的基团:其中R 3是氢,甲基或卤素,并且R 2是氢原子或甲基 条件是当R 2为氢时,R 1在20℃至200℃的温度下,在金属盐存在或不存在下,在含水介质中既不是α-甲基烯丙基也不是α-甲基炔丙基,得到相应的2-R1 -3-R2-4-羟基-2-环戊烯酮,其结构式如下:其中R 1和R 2各自如上所定义。

    Process for preparing cyclopentenolones
    4.
    发明授权
    Process for preparing cyclopentenolones 失效
    环戊烯酮的制备方法

    公开(公告)号:US4398043A

    公开(公告)日:1983-08-09

    申请号:US324135

    申请日:1981-11-23

    IPC分类号: C07C45/59

    CPC分类号: C07C45/59

    摘要: A process for preparing cyclopentenolones of the formula: ##STR1## wherein R.sub.1 is a straight, branched or cyclic alkyl group having not more than 6 carbon atoms, a straight, branched or cyclic alkenyl group having not more than 6 carbon atoms, a straight or branched alkynyl group having not more than 6 carbon atoms or a group of the formula: ##STR2## wherein R.sub.2 is a hydrogen atom, a methyl group or a halogen atom directly from the corresponding furan-carbinols of the formula: ##STR3## wherein R.sub.1 is as defined above in a single step with an excellent yield, characterized in that the furan-carbinols are treated with water in the presence or absence of a catalyst.

    摘要翻译: 一种制备下式的环戊烯酮的方法:其中R 1是不大于6个碳原子的直链,支链或环状烷基,直链或支链或环状碳原子数不多于6的烯基,直链或 具有不超过6个碳原子的支链炔基或下式的基团:其中R 2是直接来自下式的相应的呋喃 - 甲醇的氢原子,甲基或卤素原子:其中R 1 在单一步骤中具有优异的产率,其特征在于在存在或不存在催化剂的情况下用水处理呋喃 - 甲醇。

    Process for producing .beta.-isopropyl-naphthalene hydroperoxide
    7.
    发明授权
    Process for producing .beta.-isopropyl-naphthalene hydroperoxide 失效
    制备{62-异丙基萘氢过氧化物的方法

    公开(公告)号:US4049720A

    公开(公告)日:1977-09-20

    申请号:US551812

    申请日:1975-02-21

    摘要: A process for the continuous production of .beta.-isopropylnaphthalene hydroperoxide comprising oxidizing an isopropylnaphthalene mixture containing .alpha.- and .beta.-isopropylnaphthalene isomers with molecular oxygen or a molecular oxygen containing gas in an oxidation zone and recycling unreacted ispropylnaphthalene recoverd after the oxidation to the oxidation zone, in which the oxidation is carried out by controlling the .alpha.-isopropylnaphthalene content in the isopropylnaphthalene mixture continuously fed to the oxidation zone to about 15% by weight or less.

    摘要翻译: 连续生产β-异丙基氢过氧化物的方法,包括在氧化区中氧化含有α-和β-异丙基萘异构体的异丙基萘混合物与分子氧或含分子氧的气体,并将氧化后的未反应的异丙基萘回收至氧化区, 其中氧化通过将连续进料至氧化区的异丙基萘混合物中的α-异丙基萘含量控制在约15重量%以下来进行。

    Process for producing 3-oxocyclopentenes
    9.
    发明授权
    Process for producing 3-oxocyclopentenes 失效
    3-氧代环戊烯的制备方法

    公开(公告)号:US4356326A

    公开(公告)日:1982-10-26

    申请号:US213632

    申请日:1980-12-05

    摘要: A process for producing 3-oxocyclopentenes which comprises treating a furan-carbinol of the formula: ##STR1## wherein R.sub.1 is an alkyl group having not more than 6 carbon atoms, an alkenyl group having not more than 6 carbon atoms, an alkynyl group having not more than 6 carbon atoms or a group of the formula: ##STR2## in which R.sub.2 is a hydrogen atom, a methyl group or a halogen atom in an aqueous medium in the presence or absence of a catalyst at a pH of 3 to 6.5 to give the corresponding 3-oxocyclopentene of the formula: ##STR3## wherein R.sub.1 is as defined above.

    摘要翻译: 一种生产3-氧代环戊烯的方法,其包括处理下式的呋喃甲醇:其中R1是不大于6个碳原子的烷基,具有不超过6个碳原子的链烯基, 在催化剂存在或不存在下,在pH为3〜6.5的情况下,水性介质中的R 2为氢原子,甲基或卤素原子。 得到相应的下式的3-氧代环戊烯:其中R 1如上所定义。

    Production of furfuryl alcohols
    10.
    发明授权
    Production of furfuryl alcohols 失效
    生产糠醇

    公开(公告)号:US4352756A

    公开(公告)日:1982-10-05

    申请号:US248677

    申请日:1981-03-30

    IPC分类号: C07D307/42 C07D307/44

    CPC分类号: C07D307/42

    摘要: In the production of a furfuryl alcohol of the formula: ##STR1## wherein R.sub.1 is a hydrogen atom or a methyl group and R.sub.2 is an allyl or .alpha.-methylallyl group, by combining the corresponding furfural of the formula: ##STR2## wherein R.sub.1 is as defined above, with magnesium and allyl chloride or .alpha.-methylallyl chloride into a reaction and hydrolysing the resultant product, the improved method wherein tetrahydrofuran or its mixture with at least one aromatic hydrocarbon is used as a reaction medium, and the furfural and allyl chloride or .alpha.-methylallyl chloride are simultaneously added to the reaction medium comprising magnesium, whereby the objective furfuryl alcohol is obtained in high yields.

    摘要翻译: 在制备下式的糠醇时:其中R 1是氢原子或甲基,R 2是烯丙基或α-甲基烯丙基,通过组合下式的相应糠醛:其中R 1是 如上所述,用镁和烯丙基氯或α-甲基烯丙基氯反应并水解所得产物,其中使用四氢呋喃或其与至少一种芳族烃的混合物作为反应介质的改进方法,并且将糠醛和烯丙基氯 或α-甲基烯丙基氯同时加入到包含镁的反应介质中,从而以高产率获得目标糠醇。