Process for the preparation of alkylhydrazine salts
    1.
    发明授权
    Process for the preparation of alkylhydrazine salts 失效
    烷基肼盐的制备方法

    公开(公告)号:US5585521A

    公开(公告)日:1996-12-17

    申请号:US532909

    申请日:1995-09-22

    CPC分类号: C07C241/02

    摘要: Alkylhydrazine salts are prepared on an industrial scale and with good results by reacting together hydrazine, an alkene and a strong protonic acid in the presence of water, hydrazine and the protonic acid being introduced, the alkene being added, the liquid and gaseous phases present in the reaction vessel being intensively mixed together at 75.degree. to 150.degree. C., then the reaction mixture being cooled to temperatures below 60.degree. C., the precipitated alkylhydrazine salt being separated off, hydrazine and strong protonic acid being again added to the mother liquor, then alkene being added again and the next reaction cycle being thus carried out.

    摘要翻译: 在工业规模上制备烷基肼盐,并且在水,肼和引入的质子酸,加入的烯烃,存在的液体和气相中,肼,烯烃和强质子酸之间使肼, 将反应容器在75〜150℃剧烈混合,然后将反应混合物冷却至低于60℃的温度,分离出沉淀的烷基肼盐,再将肼和强质子酸加入到母液中 然后再次加入烯烃,从而进行下一个反应循环。

    Process for preparing 2-cyanoindan-1-ones
    2.
    发明授权
    Process for preparing 2-cyanoindan-1-ones 失效
    2-氰基茚满-1-酮的制备方法

    公开(公告)号:US06355827B1

    公开(公告)日:2002-03-12

    申请号:US09485957

    申请日:2000-02-18

    IPC分类号: C07C25314

    摘要: In a particularly advantageous process for producing 2-cyanoindan-1-ones from 2-halogenated indan-1-ones by reaction with a cyanide salt, the cyanide salt is dissolved in a dipolar aprotic solvent or in a water-miscible ether and 2-halogenated indan-1-one is metered into this solution.

    摘要翻译: 在通过与氰化物盐反应从2-卤代茚满-1-酮生成2-氰基茚满-1-酮的特别有利的方法中,将氰化物盐溶于偶极非质子溶剂或水混溶性醚中, 将卤代茚满-1-酮计量加入该溶液中。

    Process for the preparation of 2-chloro-6-nitrophenyl alkyl sulphides
and novel 2-chloro-6-nitrophenyl alkyl sulphides
    7.
    发明授权
    Process for the preparation of 2-chloro-6-nitrophenyl alkyl sulphides and novel 2-chloro-6-nitrophenyl alkyl sulphides 失效
    2-氯-6-硝基苯基烷基硫化物和新的2-氯-6-硝基苯基烷基硫化物的制备方法

    公开(公告)号:US5650542A

    公开(公告)日:1997-07-22

    申请号:US554143

    申请日:1995-11-06

    CPC分类号: C07C319/14 C07C2101/14

    摘要: 2-Chloro-6-nitrophenyl alkyl sulphides of the formula ##STR1## in which the substituents are as defined in the description, can be prepared by reacting 2,3-dichloro-nitrobenzenes of the formula ##STR2## with mercaptans of the formulaHS-R.sup.1 (III)in the presence of 1-1.2 equivalents of a base per mole of mercaptan and in the presence of a phase transfer catalyst, at a temperature of 0.degree.-100.degree. C., in an aqueous or aqueous-organic medium. The majority of the 2-chloro- 6-nitrophenyl alkyl sulphides obtainable in this way are novel.

    摘要翻译: 其中取代基如说明书中所定义的式(I)的2-氯-6-硝基苯基烷基硫化物可以通过使式(II)的2,3-二氯 - 硝基苯与式 与式-H-R1(III)的硫醇在1-1.2当量碱/每摩尔硫醇存在下,在相转移催化剂存在下,在0-100℃的温度下,在水溶液 或水 - 有机介质。 以这种方式获得的大多数2-氯-6-硝基苯基烷基硫化物是新颖的。

    Process for the preparation of 2,4- or 2,6-dihalogeno-aniline
    9.
    发明授权
    Process for the preparation of 2,4- or 2,6-dihalogeno-aniline 失效
    制备2,4-或2,6-二卤代苯胺的方法

    公开(公告)号:US5145958A

    公开(公告)日:1992-09-08

    申请号:US799918

    申请日:1991-11-26

    CPC分类号: C07C209/74

    摘要: 2,4- or 2,6-dihalogeno-aniline can be prepared by reacting an amino-benzoic acid ester of the formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 have the meanings indicated in the description, with 2-2.5 moles of a chlorinating or brominating agent in an inert reaction medium at a temperature of 40.degree.-160.degree. C. and subsequently hydrolyzing and decarboxylating the dihalogenated amino-benzoic acid ester.

    摘要翻译: 2,4-或2,6-二卤代苯胺可以通过使式(I)的氨基 - 苯甲酸酯与其中R1,R2和R3具有说明书所示含义的氨基 - 苯甲酸酯与2- 2.5摩尔氯化或溴化剂在惰性反应介质中,在40〜160℃下,随后水解和脱羧二卤代氨基 - 苯甲酸酯。

    Process for the sulphoxidation of N-paraffins
    10.
    发明授权
    Process for the sulphoxidation of N-paraffins 失效
    N-PARAFFINS的硫化过程

    公开(公告)号:US5096625A

    公开(公告)日:1992-03-17

    申请号:US591659

    申请日:1990-10-02

    IPC分类号: C07C303/14 C07C309/04

    CPC分类号: C07C303/14

    摘要: Aliphatic sulphonic acids can be prepared by reacting n-paraffins with SO.sub.2 and O.sub.2 under UV irradiation with high selectivity even at conversions of up to 12 mol % if an amount of water is added which is appropriate to ensure that after the reaction has commenced and the stationary state has been reached, the sulphoxidation proceeds in homogeneous phase.

    摘要翻译: 脂肪族磺酸可以通过在UV照射下以高选择性使正链烷烃与SO 2和O 2反应来制备,即使加入适量的水也可以达到12mol%的转化率,这是适当的,以确保在反应开始后 已经达到稳态,均匀相进行亚砜化。