Preparation of 3-formyl-5,6-dihydro-2H-pyran
    52.
    发明授权
    Preparation of 3-formyl-5,6-dihydro-2H-pyran 失效
    3-甲酰基-5,6-二氢-2H-吡喃的制备

    公开(公告)号:US4532337A

    公开(公告)日:1985-07-30

    申请号:US584334

    申请日:1984-02-28

    IPC分类号: C07D309/26 C07D309/00

    CPC分类号: C07D309/26

    摘要: 3-Formyl-5,6-dihydro-2H-pyran is prepared by conversion of acrolein in the presence of water, acids and halohydrocarbons of 1 to 6 carbon atoms and 1 to 6 halogen atoms as solvents at from 60.degree. to 150.degree. C. The 3-formyl-5,6-dihydro-2H-pyran obtained by the novel process is a valuable starting material for the preparation of dyes and crop protection agents.

    摘要翻译: 3-甲酰基-5,6-二氢-2H-吡喃是通过在水,酸和1至6个碳原子和1至6个卤素原子的卤代烃作为溶剂在60至150℃的存在下转化丙烯醛来制备的 通过新方法获得的3-甲酰基-5,6-二氢-2H-吡喃是制备染料和作物保护剂的有价值的起始原料。

    Preparation of cis-2,6-dimethylmorpholine
    54.
    发明授权
    Preparation of cis-2,6-dimethylmorpholine 失效
    顺式-2,6-二甲基吗啉的制备

    公开(公告)号:US4298733A

    公开(公告)日:1981-11-03

    申请号:US184816

    申请日:1980-09-08

    CPC分类号: C07D295/023

    摘要: A process for the preparation of cis-2,6-dimethylmorpholine by isomerizing trans-2,6-dimethylmorpholine, wherein trans-2,6-dimethylmorpholine is converted, in the presence of hydrogen and of a catalyst containing palladium as well as zinc, cadmium or manganese or a mixture of these, at from 150.degree. to 250.degree. C. under a pressure of from 1 to 200 bar.

    摘要翻译: 通过异构化反式-2,6-二甲基吗啉,其中反式-2,6-二甲基吗啉在氢气和含有钯的催化剂以及锌的存在下转化而制备顺式-2,6-二甲基吗啉的方法, 镉或锰或它们的混合物,在150-250℃,1至200巴的压力下进行。

    Insecticidal process
    55.
    发明授权
    Insecticidal process 失效
    杀虫过程

    公开(公告)号:US4282238A

    公开(公告)日:1981-08-04

    申请号:US060836

    申请日:1979-07-26

    摘要: Insecticidal agents containing, as active ingredients, imidazole derivatives or salts thereof. The imidazole derivatives have the formula ##STR1## where R.sup.1 denotes branched alkyl of 6 to 20 carbon atoms, linear alkyl of 6 to 16 carbon atoms, branched alkenyl of 10 to 20 carbon atoms, linear or branched alkynyl of 3 to 6 carbon atoms, 2-methyl-3-phenylpropyl or 2-methyl-3-phenylpropen-2-yl, phenyl being unsubstituted or mono- or polysubstituted by halogen or alkyl of 1 to 10 carbon atoms, and R.sup.2, R.sup.3 and R.sup.4 denote hydrogen or methyl.These insecticidal agents are suitable as growth regulators and ovicides for controlling insects from the Lepidoptera, Coleoptera, Diptera, Hymenoptera, Heteroptera, Homoptera and Isoptera classes.

    摘要翻译: 含有作为活性成分的咪唑衍生物或其盐的杀虫剂。 咪唑衍生物具有式“IMAGE”,其中R 1表示6至20个碳原子的支链烷基,6至16个碳原子的直链烷基,10-20个碳原子的支链烯基,3至6个碳原子的直链或支链炔基, 2-甲基-3-苯基丙基或2-甲基-3-苯基丙-2-基,苯基是未取代的或被卤素或1-10个碳原子的烷基单取代或多取代,R2,R3和R4表示氢或甲基。 这些杀虫剂适合作为生长调节剂和杀卵剂,用于控制来自鳞翅目,鞘翅目,双翅目,膜翅目,异翅目,同翅目和等翅目类的昆虫。

    Production of high molecular weight .alpha.,.beta.-unsaturated aldehydes
    56.
    发明授权
    Production of high molecular weight .alpha.,.beta.-unsaturated aldehydes 失效
    生产高分子量{60,{62-不饱和醛

    公开(公告)号:US4021411A

    公开(公告)日:1977-05-03

    申请号:US583637

    申请日:1975-06-04

    IPC分类号: C07C45/70 C07C45/71 C07C47/20

    CPC分类号: C07C45/71 C07C45/70

    摘要: A process for the production of high molecular weight .alpha.,.beta.-unsaturated aldehydes by alkylation of the .gamma.-carbon atom of a lower molecular weight .alpha.,.beta.-unsaturated aldehyde with a substituted allyl alcohol which has a chain branching in the 4-position carbon atom or a phenyl radical in the 4-position or of a corresponding allyl alcohol carboxylic ester at elevated temperature in the liquid phase.The products are valuable intermediates for the production of natural substances and odorants.

    摘要翻译: 通过用较低分子量的α,β-不饱和醛的γ-碳原子烷基化制备高分子量α,β-不饱和醛的方法,该取代的烯丙醇在4-位碳上具有支链分支 原子或4-位的苯基或相应的烯丙基醇羧酸酯在液相中升高的温度。