Process for the monohalogenation of alkylbenzenes in the
.alpha.-position and new alkylbenzenes monohalogenated in the
.alpha.-position
    3.
    发明授权
    Process for the monohalogenation of alkylbenzenes in the .alpha.-position and new alkylbenzenes monohalogenated in the .alpha.-position 失效
    在α位上的烷基苯的单卤化方法和在α-位上单卤代的新的烷基苯

    公开(公告)号:US4331821A

    公开(公告)日:1982-05-25

    申请号:US209765

    申请日:1980-11-24

    摘要: A process for the monohalogenation of alkylbenzenes in the .alpha.-position is disclosed wherein an alkylbenzene reactant containing a hydrogen atom in the .alpha.-position is contacted with a halogen and the reaction mixture is withdrawn such that the amount of monohalogenated alkylbenzene formed is no greater than 33 mol percent in the reaction mixture. Also disclosed are novel monohalogenated alkylbenzenes of the formula ##STR1## in which R.sup.7 represents trifluoromethoxy, trifluoromethylthio or 2-perfluoropropyl or also, if R.sup.8 represents chlorine, represents trifluoromethyl and, furthermore, ifR.sup.8 and R.sup.9 represent trifluoromethyl, represents hydrogen,R.sup.8 represents hydrogen or also, if R.sup.7 represents trifluoromethyl or trifluoromethoxy, represent chlorine and also, if R.sup.7 represents hydrogen and R.sup.9 represents trifluoromethyl, denotes trifluoromethyl andR.sup.9 represents hydrogen and, if R.sup.7 represents hydrogen and R.sup.8 represents trifluoromethyl, denotes trifluoromethyl.

    摘要翻译: 公开了一种在α-位上烷基苯单一卤化的方法,其中含有α位上的氢原子的烷基苯反应物与卤素接触,取出反应混合物使得形成的单卤代烷基苯的量不大于 在反应混合物中为33摩尔%。 还公开了具有式“IMAGE”的新型单卤代烷基苯,其中R 7表示三氟甲氧基,三氟甲硫基或2-全氟丙基,或者如果R 8表示氯,则表示三氟甲基,此外,如果R 8和R 9表示三氟甲基,则R 8表示氢 或者如果R 7表示三氟甲基或三氟甲氧基,也表示氯,并且如果R 7表示氢且R 9表示三氟甲基,则表示三氟甲基,R 9表示氢,如果R 7表示氢且R 8表示三氟甲基,则表示三氟甲基。

    Process for the preparation of certain enantiomeric pairs of
.alpha.-cyano-3-phenoxy-4-fluoro-benzyl permethrate
    4.
    发明授权
    Process for the preparation of certain enantiomeric pairs of .alpha.-cyano-3-phenoxy-4-fluoro-benzyl permethrate 失效
    制备α-氰基-3-苯氧基-4-氟 - 苄基苄酯的某些对映异构体对的方法

    公开(公告)号:US4544508A

    公开(公告)日:1985-10-01

    申请号:US689759

    申请日:1985-01-09

    CPC分类号: A01N53/00 C07C255/53

    摘要: A process for the preparation of the enantiomeric pairs (1R-3R-.alpha.S+1S-3S-.alpha.R) and (1R-3S-.alpha.S+1S-3R-.alpha.R) from a mixture of all 8 stereoisomers of the compound .alpha.R/S-cyano-3-phenoxy-4-fluorobenzyl 3R/S-(2,2-dichlorovinyl)-2,2-dimethyl-1R/S-cyclopropanecarboxylate, comprising dissolving the mixture in a secondary or tertiary alkylamine having 2-6 C atoms per alkyl radical, subjecting the solution to crystallization whereby the enantiomeric pairs (1R-3R-.alpha.S+1S-3S-.alpha.R) and (1R-3S-.alpha.S+1S-3R-.alpha.R) crystallize out from the solution, and separating the crystallized material. The crystals are enriched in the most active components.

    摘要翻译: 从化合物的所有8种立体异构体的混合物制备对映体对(1R-3R-αS+ 1S-3S-αR)和(1R-3S-αS+ 1S-3R-αR)的方法 α-R / S-氰基-3-苯氧基-4-氟苄基3R / S-(2,2-二氯乙烯基)-2,2-二甲基-1R / S-环丙烷羧酸酯,包括将该混合物溶解在二 -6 C原子,使溶液结晶,由此将对映异构体对(1R-3R-αS+ 1S-3S-αR)和(1R-3S-αS+ 1S-3R-αR)结晶出来 从溶液中分离出结晶物质。 晶体富含最活跃的成分。

    Combating arthropods with fluorine-substituted spiro-carboxylic acid
benzyl esters
    6.
    发明授权
    Combating arthropods with fluorine-substituted spiro-carboxylic acid benzyl esters 失效
    将节肢动物与氟取代的螺 - 羧酸苄酯相结合

    公开(公告)号:US4317834A

    公开(公告)日:1982-03-02

    申请号:US203032

    申请日:1980-11-03

    CPC分类号: A01N53/00

    摘要: Fluorine-substituted spirocarboxylic acid benzyl esters of the formula ##STR1## in which R.sup.1 represents hydrogen, cyano or alkyl, alkenyl or alkynyl, with in each case up to 4 carbon atoms,R.sup.2 represents a phenyl radical which is substituted by halogen and/or by optionally halogen-substituted phenoxy, with the proviso that the radical R.sup.2 contains in total at least one fluorine substituent, andR.sup.3, R.sup.4, R.sup.5 and R.sup.6 each represent hydrogen, halogen or alkyl, orR.sup.3 and R.sup.4, taken together, and/or R.sup.5 and R.sup.6, taken together, represent alkanediyl (alkylene) or a fused-on benzo radical,and the C atoms of the 5-member spirocyclic ring are linked to one another either by double bonds or by single bonds, which possess arthropodicidal properties.

    摘要翻译: 氟取代的式“IMAGE”的螺羧酸苄基酯,其中R 1表示氢,氰基或烷基,烯基或炔基,在每种情况下最多4个碳原子,R 2表示被卤素和/或 通过任选的卤素取代的苯氧基,条件是基团R 2总共含有至少一个氟取代基,并且R 3,R 4,R 5和R 6各自代表氢,卤素或烷基,或者R 3和R 4一起,和/或 R 5和R 6一起代表烷二基(亚烷基)或稠合的苯并基,5元螺环的C原子通过具有节肢动物特性的双键或单键彼此连接。