Ring opening of cyclic nitro ketones
    112.
    发明授权
    Ring opening of cyclic nitro ketones 失效
    环状硝基酮的开环

    公开(公告)号:US4554387A

    公开(公告)日:1985-11-19

    申请号:US604891

    申请日:1984-04-27

    Inventor: Paul D. Seemuth

    CPC classification number: C07C201/12

    Abstract: Macrocyclic ring opening reaction. The 2-nitro cycloalkan-1-ones and similar 2-nitro heterocyclic compounds are ring opened by reduction of the carbonyl oxygen with an anionic species such as NaBH.sub.4. An .alpha.,.omega.-nitro alcohol is recovered.

    Abstract translation: 大环开环反应。 2-硝基环烷-1-酮和类似的2-硝基杂环化合物通过用阴离子物质如NaBH 4还原羰基氧来开环。 回收α,ω-硝基醇。

    Process for the preparation of 6-chloro-2,4-dinitrophenol
    113.
    发明授权
    Process for the preparation of 6-chloro-2,4-dinitrophenol 失效
    6-氯-2,4-二硝基苯酚的制备方法

    公开(公告)号:US4540832A

    公开(公告)日:1985-09-10

    申请号:US604072

    申请日:1984-04-26

    CPC classification number: C07C201/12

    Abstract: A process for the preparation of 6-chloro-2,4-dinitrophenol in a high yield and in a high degree of purity by saponifying 2,4-dinitrochlorobenzene and/or 2,4-dinitrophenyl alkyl ethers of the formula ##STR1## in which m denotes the number 2, 3 or 4 and n denotes the number 1 or 2, by means of aqueous sodium hydroxide or potassium hydroxide solution and chlorinating the resulting 2,4-dinitrophenol with sodium hypochlorite, which comprises chlorinating the 2,4-dinitrophenol, without prior isolation as an intermediate, in aqueous suspension at a pH value of 3.5-7 by means of chlorine bleach liquor at temperatures of 5.degree. to 20.degree. C.

    Abstract translation: 通过将式“IMAGE”的2,4-二硝基氯苯和/或2,4-二硝基苯基烷基醚皂化,以高产率和高纯度制备6-氯-2,4-二硝基苯酚的方法 其中m表示数字2,3或4,n表示数字1或2,用氢氧化钠水溶液或氢氧化钾溶液洗涤,并用次氯酸钠氯化所得的2,4-二硝基苯酚,其包括将2,4- 二硝基酚在没有预先分离为中间体的情况下,在pH值为3.5-7的水悬浮液中,通过氯漂白液在5至20℃的温度下进行。

    Preparation of nitro-olefins
    115.
    发明授权
    Preparation of nitro-olefins 失效
    硝基烯烃的制备

    公开(公告)号:US4410746A

    公开(公告)日:1983-10-18

    申请号:US385150

    申请日:1982-06-04

    Applicant: Paul E. Eckler

    Inventor: Paul E. Eckler

    CPC classification number: C07C201/12

    Abstract: A process for the preparation of nitro-olefins comprising reacting a compound of the formula ##STR1## where R and R.sup.1 can be hydrogen, alkyl of 1-20 carbon atoms or phenyl, with an aldehyde acceptor selected from the group consisting of alkylene polyols or aromatic polyols, in the presence of an alkaline catalyst or a Lewis acid catalyst.

    Abstract translation: 一种制备硝基烯烃的方法,其包括使式(I)的化合物(其中R和R 1可以是氢,1-20个碳原子的烷基或苯基)与选自以下的醛受体反应:亚烷基多元醇或 芳族多元醇,在碱性催化剂或路易斯酸催化剂存在下进行。

    Method for the preparation of difluoromethoxyaromatic compounds
    116.
    发明授权
    Method for the preparation of difluoromethoxyaromatic compounds 失效
    二氟甲氧基芳族化合物的制备方法

    公开(公告)号:US4404148A

    公开(公告)日:1983-09-13

    申请号:US420164

    申请日:1982-09-20

    Inventor: Jack K. Siddens

    CPC classification number: C07C201/12 C07C41/16 C07C67/31

    Abstract: A method for the preparation of certain difluoromethoxyaromatic compounds which are useful intermediates for the preparation of pyrethroid pesticides. The method comprises alkylating a p-substituted phenol with excess chlorodifluoromethane at atmospheric and superatomspheric pressures in the presence of a base, acetone, benzyltriethylammonium chloride, and water.

    Abstract translation: 一种制备某些二氟甲氧基芳族化合物的方法,它们是制备拟除虫菊酯农药的有用中间体。 该方法包括在碱,丙酮,苄基三乙基氯化铵和水的存在下,在大气压和超大体积压力下用过量的氯代二氟甲烷烷基化取代的苯酚。

    Preparation of hexanitrostilbene
    120.
    发明授权
    Preparation of hexanitrostilbene 失效
    己酐二萜烯的制备

    公开(公告)号:US4221745A

    公开(公告)日:1980-09-09

    申请号:US20881

    申请日:1979-03-15

    CPC classification number: C07C201/12

    Abstract: There is disclosed a process for converting 2,2', 4,4', 6,6'-hexanitrobibyl (HNBB) to 2,2', 4,4', 6,6'-hexanitrostilbene (HNS) by reacting HNBB with a copper ammino compound in a solvent. The HNS product can be produced in yields of greater than 65%.

    Abstract translation: 公开了将HNBB与HNBB反应的方法,将2,2',4,4',6,6'-六硝基苄基(HNBB)转化为2,2',4,4',6,6'-己二芪(HNS) 在溶剂中的铜氨基化合物。 HNS产品的产量可以大于65%。

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