Reduction of trichloromethylpyridines to dichloromethylpyridines
    1.
    发明授权
    Reduction of trichloromethylpyridines to dichloromethylpyridines 失效
    将三氯甲基吡啶还原成二氯甲基吡啶

    公开(公告)号:US4499276A

    公开(公告)日:1985-02-12

    申请号:US475017

    申请日:1983-03-14

    IPC分类号: C07D213/61 C07D213/26

    CPC分类号: C07D213/61

    摘要: 2(6)-(Trichloromethyl)pyridines are reduced to the corresponding 2(6)-(dichloromethyl)pyridines by treatment with a strong base and an anionic reductant derived from a reductant source material selected from the group consisting of chloroform, dimethylsulfoxide, dimethylsulfone, and a ketone having a base-abstractable hydrogen, said treatment taking place in the presence of a polar, non-hydroxylic solvent and/or a phase transfer catalyst.

    摘要翻译: 通过用强碱和衍生自还原剂来源的阴离子还原剂处理将2(6) - (三氯甲基)吡啶还原成相应的2(6) - (二氯甲基)吡啶,该还原剂源选自氯仿,二甲基亚砜,二甲基砜 和具有碱取代氢的酮,所述处理在极性非羟基溶剂和/或相转移催化剂存在下进行。

    Preparation of substituted (dichloromethyl)pyridines
    2.
    发明授权
    Preparation of substituted (dichloromethyl)pyridines 失效
    取代(二氯甲基)吡啶的制备

    公开(公告)号:US4739070A

    公开(公告)日:1988-04-19

    申请号:US855226

    申请日:1986-04-23

    申请人: Jon A. Orvik

    发明人: Jon A. Orvik

    CPC分类号: C07D213/61

    摘要: 2- and 4-(Dichloromethyl)pyridines containing electron withdrawing substituents on the ring are prepared by the reaction of the corresponding 2- or 4-halopyridines with excess chloroform in the presence of a strong base in a medium containing a dipolar aprotic solvent or a phase transfer catalyst. 3-Chloro-5-(trifluoromethyl)-2-(dichloromethyl)pyridine, for example, is prepared by the reaction of 2,3-dichloro-5-(trifluoromethyl)pyridine with chloroform in the presence of sodium hydroxide and N-methylpyrrolidone. Substituted 2-(dichloromethyl)pyridines are useful as agricultural pesticides and as intermediates for the preparation of agricultural pesticides.

    摘要翻译: 通过相应的2-或4-卤代吡啶与过量的氯仿在强碱的存在下在含有偶极非质子溶剂的介质中反应制备含有吸电子取代基的2-和4-(二氯甲基)吡啶, 相转移催化剂。 例如通过2,3-二氯-5-(三氟甲基)吡啶与氯仿在氢氧化钠和N-甲基吡咯烷酮存在下反应制备3-氯-5-(三氟甲基)-2-(二氯甲基)吡啶 。 取代的2-(二氯甲基)吡啶可用作农药,作为制备农药的中间体。

    2-hydrocarbyl-3,6-dichloropyridine compounds
    3.
    发明授权
    2-hydrocarbyl-3,6-dichloropyridine compounds 失效
    2-烃基-3,6-二氯吡啶化合物

    公开(公告)号:US5084576A

    公开(公告)日:1992-01-28

    申请号:US626644

    申请日:1990-12-11

    IPC分类号: C07D213/61

    CPC分类号: C07D213/61

    摘要: 2-Hydrocarbyl-3,6-dichloropyridines are prepared from dichloromethyl hydrocarbyl ketones and acrylonitrile in a two-step process involving an addition reaction under basic conditions to form intermediate 1,1-dichloro-3-cyanopropyl hydrocarbyl ketones and a subsequent cyclization reaction in the presence of hydrogen chloride. Thus, 3,6-dichloro-2-methylpyridine is prepared from 1,1-dichloro-2-propanone and acrylonitrile by the formation and further reaction of 4,4-dichloro-5-oxo-hexanenitrile. The intermediates and products are novel compounds useful in the preparation of herbicides and nitrification inhibitors.

    摘要翻译: 2-二烃基-3,6-二氯吡啶由二氯甲基烃基酮和丙烯腈制备,包括在碱性条件下进行加成反应的两步法形成中间体1,1-二氯-3-氰基丙基烃基酮,随后进行环化反应 存在氯化氢。 因此,通过4,4-二氯-5-氧代 - 己腈的形成和进一步的反应,由1,1-二氯-2-丙酮和丙烯腈制备3,6-二氯-2-甲基吡啶。 中间体和产物是可用于制备除草剂和硝化抑制剂的新化合物。

    Method for removing chloropicrin from an aqueous medium
    6.
    发明授权
    Method for removing chloropicrin from an aqueous medium 失效
    从水性介质中除去氯化苦的方法

    公开(公告)号:US4257899A

    公开(公告)日:1981-03-24

    申请号:US073778

    申请日:1979-09-10

    申请人: Jon A. Orvik

    发明人: Jon A. Orvik

    IPC分类号: C02F1/70 C02F9/00 C02F1/72

    摘要: A method for destroying chloropicrin in an aqueous medium contaminated with chloropicrin which comprises contacting the aqueous medium with a sufficient amount of an alkali metal sulfite for a sufficient period of time to convert the chloropicrin to an alkali metal chloride and to nitromethane disulfonic acid or a salt thereof, whereby the aqueous medium is rendered substantially free of chloropicrin.

    摘要翻译: 一种在氯化苦毒素污染的水性介质中破坏氯化苦的方法,该方法包括使水性介质与足够量的碱金属亚硫酸盐接触足够的时间以将氯化苦霉素转化为碱金属氯化物和硝基甲烷二磺酸或盐 由此使得水性介质基本上不含氯化苦。

    Polymers of oxetane-spiro-cyclic polyethers
    7.
    发明授权
    Polymers of oxetane-spiro-cyclic polyethers 失效
    氧杂环丁烷 - 环 - 环聚醚的聚合物

    公开(公告)号:US4140847A

    公开(公告)日:1979-02-20

    申请号:US510873

    申请日:1974-10-01

    IPC分类号: C08G65/18 C08G65/02

    CPC分类号: C08G65/18

    摘要: Novel linear, branched and cyclic polymers of the repeating unit ##STR1## wherein R is ethylene or propylene bearing from zero to six methyl groups and m and n are lower integers and a process for utilizing said polymers to extract salts from solution are disclosed. For example, a monomer of the formula ##STR2## is contacted with traces of water in the presence of BF.sub.3.etherate to give a homopolymer consisting essentially of repeating units of the formula ##STR3## which extracts sodium salts from aqueous solution in a thermally reversible manner.

    摘要翻译: 公开了重复单元“IMAGE”的新型直链,支链和环状聚合物,其中R是含有0至6个甲基的乙烯或丙烯,m和n是较低的整数,并且公开了利用所述聚合物从溶液中提取盐的方法。 例如,在BF 3醚的存在下,将式“IMAGE”的单体与微量的水接触,得到基本上由式“IMAGE”重复单元组成的均聚物,其从水溶液中以热可逆的方式提取钠盐 方式。

    Process for the preparation of 3- and/or 5-substituted anthranilic acids
    9.
    发明授权
    Process for the preparation of 3- and/or 5-substituted anthranilic acids 失效
    制备3-和/或5-取代邻氨基苯甲酸的方法

    公开(公告)号:US5189210A

    公开(公告)日:1993-02-23

    申请号:US876651

    申请日:1992-04-30

    IPC分类号: C07C227/22 C07C229/56

    CPC分类号: C07C227/22 C07C229/56

    摘要: Anthranilic acids substituted in the 3- and/or 5-position are valuable intermediates for the production of agricultural chemicals. These substituted anthranilic acids can be obtained in good yield without undesirable isomeric byproducts by the oxidative ring-opening of dihydroquinolin-4-ones or quinolin-2,4-diones with t-butyl hydroperoxide in the presence of a base.

    摘要翻译: 在3-和/或5-位取代的邻氨基苯甲酸是生产农药的有价值的中间体。 这些取代的邻氨基苯甲酸可以以良好的产率获得,而在碱的存在下,通过二氢喹啉-4-酮或喹啉-2,4-二酮与叔丁基过氧化氢的氧化开环无异构副产物。