Manufacture of 2,4-dioxo-oxazolidines
    2.
    发明授权
    Manufacture of 2,4-dioxo-oxazolidines 失效
    2,4-二氧代恶唑烷的制造

    公开(公告)号:US4187227A

    公开(公告)日:1980-02-05

    申请号:US879724

    申请日:1978-02-21

    IPC分类号: C07D263/44

    CPC分类号: C07D263/44

    摘要: 2,4-Dioxo-oxazolidines are manufactured by reacting aromatic amines with .alpha.-hydroxycarboxylic acid of the formula ##STR1## where R.sup.1 and R.sup.2 have the above meanings, Hal is halogen, preferably chlorine, and R.sup.4 is alkyl of 1 to 4 carbon atoms in the presence of a base, preferably at 20-120.degree. C.

    摘要翻译: 2,4-二氧代恶唑烷是通过使芳族胺与式(IMAGE)其中R1和R2具有上述含义的α-羟基羧酸反应来制备的,Hal是卤素,优选氯,R4是1-4个碳原子的烷基 在碱的存在下,优选在20-120℃。

    Preparation of aromatic azomethines
    4.
    发明授权
    Preparation of aromatic azomethines 失效
    芳香偶氮甲碱的制备

    公开(公告)号:US4491672A

    公开(公告)日:1985-01-01

    申请号:US155760

    申请日:1980-06-02

    CPC分类号: C07C249/02

    摘要: Aromatic azomethines are prepared by reacting anilines with formaldehyde and then removing the greater part of the water by distillation, low-boiling alcohols, in certain amounts, being present during the distillation and, if desired, during the reaction or during a part thereof.The aromatic azomethines obtainable by the novel process are valuable starting materials for the preparation of herbicides, especially pre-emergence herbicides and post-emergence herbicides, fungicides, insecticides, bacteriostatic agents, fungistatic agents and vulcanization accelerators.

    摘要翻译: 芳族偶氮甲碱通过苯胺与甲醛反应然后通过蒸馏除去大部分水,一定量的低沸点醇,在蒸馏期间以及如果需要在反应过程中或在其一部分期间进行制备。 通过新方法获得的芳族偶氮甲碱是用于制备除草剂,特别是芽前除草剂和芽后除草剂,杀真菌剂,杀虫剂,抑菌剂,抑菌剂和硫化促进剂的有价值的起始材料。

    Manufacture of .alpha.-haloalkylcarbamyl halides
    10.
    发明授权
    Manufacture of .alpha.-haloalkylcarbamyl halides 失效
    α-卤代烷基氨基甲酰卤的制备

    公开(公告)号:US4235814A

    公开(公告)日:1980-11-25

    申请号:US921312

    申请日:1978-07-03

    IPC分类号: C07C125/03

    摘要: .alpha.-haloalkylcarbamyl halides are manufactured by reacting N-tert.-alkyl-N-1-alkenyl-carbamyl halides with a hydrogen halide at from -78.degree. C. to +80.degree. C.The .alpha.-haloalkylcarbamyl halides, e.g. .alpha.-chloroalkylcarbamyl chlorides, especially .alpha.-chloroethylcarbamyl chloride, prepared by the process of the invention, are valuable starting materials for the manufacture of surface-coating raw materials, textile coatings, dyes, drugs and crop protection agents.

    摘要翻译: α-卤代烷基氨基甲酰卤通过N-叔烷基-N 1 - 烯基 - 氨基甲酰基卤化物与卤化氢在-78℃至+ 80℃下反应来制备。 通过本发明的方法制备的α-氯代烷基氨基甲酰氯,特别是α-氯乙基氨基甲酰氯,是用于制造表面包衣原料,纺织品涂料,染料,药物和作物保护剂的有价值的原料。