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8 条记录 (耗时 0.01 秒)

    Certain furylmethyl and thenyl esters of certain cyclopropane carboxylic acids
    3.
    发明授权
    Certain furylmethyl and thenyl esters of certain cyclopropane carboxylic acids 失效
    某些CYROPROPANE CARBOXYLIC酸的某些呋喃米尔和噻吩

    公开(公告)号：US3857863A

    公开(公告)日：1974-12-31

    申请号：US16836971

    申请日：1971-08-02

    申请人： SUMITOMO CHEMICAL CO

    发明人： OHNO N ,  ITAYA N ,  MIZUTANI T ,  KAWANAMI T ,  OKUNO Y ,  FUJIMOTO K

    IPC分类号： C07D333/16 ,  A01N53/04 ,  C07D307/42 ,  C07D307/45 ,  C07D307/56 ,  C07D5/18 ,  C07D5/16 ,  C07D5/20

    CPC分类号： C07D307/42 ,  C07D307/56

    摘要： A cyclopropanecarboxylate represented by the formula,

    WHEREIN R1 is hydrogen atom, methyl or ethyl group, R2 is methyl, ethyl, 2-methyl-1-propenyl or 2-methoxycarbonyl-1propenyl group when R1 is hydrogen atom, or R2 is methyl or ethyl group when R1 is methyl or ethyl group, and R3 and R4 are respectively hydrogen atom, methyl or ethyl group, provided that the case where R1, R3 and R4 are simultaneously hydrogen atom is excluded, R5 is a lower alkynyl or a lower alkenyl group, R6 is a lower alkynyl, a lower alkenyl or a lower alkoxyalkyl group, R7 is hydrogen atom, a lower alkyl or a lower alkoxy group or a halogen atom, n is 1 or 2, and X is oxygen or sulfur atom, which is useful as an active ingredient of insecticides.

    摘要翻译： 由式表示的环丙烷羧酸酯，其中当R1是氢原子时，R1是氢原子，甲基或乙基，R2是甲基，乙基，2-甲基-1-丙烯基或2-甲氧基羰基-1-丙烯基，或R2是甲基 或R1为甲基或乙基时为乙基，R3和R4分别为氢原子，甲基或乙基，但R1，R3和R4同时为氢原子的情况除外，R5为低级炔基或低级 烯基，R6为低级炔基，低级烯基或低级烷氧基烷基，R7为氢原子，低级烷基或低级烷氧基或卤素原子，n为1或2，X为氧或硫原子， 其作为杀虫剂的活性成分是有用的。

    Chloro substituted furfural phenyl hydrazones
    5.
    发明授权
    Chloro substituted furfural phenyl hydrazones 失效
    CHLORO取代的芙蓉香水

    公开(公告)号：US3821261A

    公开(公告)日：1974-06-28

    申请号：US28543972

    申请日：1972-08-31

    申请人： UPJOHN CO

    发明人： KAUGARS G

    IPC分类号： C07D5/16 ,  C07D5/18

    摘要： This invention relates to novel heterocyclic acid chloride phenylhydrazones embraced by the formula

    WHEREIN R is a radical selected from the group consisting of furyl, thienyl, and pyridyl, each of which has from zero through three substituents selected from the group consisting of alkyl, halo and nitro, and n is an integer of from zero through three. These compounds are primarily useful as insecticides and miticides and also as herbicides, anti-inflammatories and anthelmintics.

    Process for the preparation of 2,3-dibromfuran
    6.
    发明授权
    Process for the preparation of 2,3-dibromfuran 失效
    制备2,3-DIBROMFURAN的方法

    公开(公告)号：US3714197A

    公开(公告)日：1973-01-30

    申请号：US3714197D

    申请日：1970-06-22

    申请人： SORI SOC RECH IND

    发明人： MAJOIE B

    IPC分类号： C07D307/56 ,  C07D307/68 ,  C07D5/18

    CPC分类号： C07D307/56 ,  C07D307/68

    摘要： The invention relates to a process for the preparation of 2,3dibromofuran by brominating an alkyl furoate, suitably methyl or ethyl furoate, in the presence of a chlorinated organic solvent; saponifying the brominated ester; decarboxylating the saponified ester and recovering the 2,3-dibromofuran. The furoate ester is conveniently prepared by oxidizing furfural with potassium permanganate, preferably in the presence of acetone as solvent, and reacting the furoic acid so formed with methyl or ethyl alcohol, suitably in the presence of sulphuric acid.

    摘要翻译： 本发明涉及通过在氯化有机溶剂存在下溴化糠酸烷基酯，合适的甲基或糠酸乙酯来制备2,3-二溴呋喃的方法; 皂化溴化酯; 使皂化的酯脱羧并回收2,3-二溴呋喃。 通过用高锰酸钾氧化糠醛，优选在作为溶剂的丙酮存在下，通过适当地在硫酸存在下使所形成的糠酸与甲基或乙醇反应来方便地制备糠酸酯。

    Process for producing furoic acid derivatives
    8.
    发明授权
    Process for producing furoic acid derivatives 失效
    生产丙酸衍生物的方法

    公开(公告)号：US3567744A

    公开(公告)日：1971-03-02

    申请号：US3567744D

    申请日：1968-07-15

    申请人： SUMITOMO CHEMICAL CO

    发明人： TANAKA SHIZUYA ,  YOSHIOKA HIROSUKE ,  HIGO AKIO ,  MAGARA OSAMU

    IPC分类号： C07D307/68 ,  C07D317/30 ,  C07D5/18 ,  C07D5/20

    CPC分类号： C07D307/68 ,  C07D317/30

    摘要： A NOVEL PROCESS FOR PRODUCING 5-SUBSTITUTED 3-FUROIC ACID DERIVATIVES USEFUL AS INTERMEDIATES IN A SYNTHESIS OF INSECTICIDES. FOR EXAMPLE 5-BENZYL-3-FUROIC ACID IS PRODUCED BY REACTING ETHYLENE KETAL OF ETHYL LEVULINATE WITH ETHYL FORMATE IN THE PRESENCE OF SODIUM HYDRIDE TO YIELD ETHYLENE KETAL OF ETHYL A-FORMYL-LEVULINATE, RING-CLOSING THE RESULTANT ETHYLENE KETAL OF ETHYL A-FORMYL-LEVULINATE BY CONTACTING IT WITH HYDROCHLORIC ACID TO YIELD ETHYL 5-METHYL-3FUROATE, BROMINATING THE RESULTANT ETHYL 5-METHYL-3FUROATE TO YIELD ETHYL 2-BROMO-5-BROMOMETHYL-3-FUROATE, REACTING THE RESULTANT ETHYL 2 - BROMO-5-BROMO-METHYL-3FUROATE WITH BENZENE IN THE PRESENCE OF ALUMINUM CHLORIDE TO YIELD ETHYL 2-BROMO-5-BENZYL-3-FUROATE AND, AFTER HYDROLYZING THE ESTER TO AN ACID, REACTING THE RESULTANT 2BROMO - 5 - BENZYL - 3-FUROIC ACID WITH ZINC POWDER IN AN AQUEOUS AMMONIA SOLUTION TO YIELD 5-BENZYL-3-FUROIC ACID.