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    Process for the preparation of 2,2'-dichloro-hydrazobenzene
    2.
    发明授权
    Process for the preparation of 2,2'-dichloro-hydrazobenzene 失效
    制备2,2'-二氯 - 苯肼的方法

    公开(公告)号：US4217307A

    公开(公告)日：1980-08-12

    申请号：US927856

    申请日：1978-07-25

    Applicant: Siegfried Planker ,  Konrad Baessler ,  Otto Fuchs

    Inventor： Siegfried Planker ,  Konrad Baessler ,  Otto Fuchs

    IPC: C07B61/00 ,  B01J31/00 ,  B01J31/28 ,  C07C20060101 ,  C07C67/00 ,  C07C241/00 ,  C07C243/22 ,  C07C109/04

    CPC classification number: C07C241/02

    Abstract: The catalytic hydrogenation of o-nitro-chlorobenzene in aqueous alkali metal hydroxide solution with addition of an aromatic non-watermiscible solvent at an elevated temperature and under pressure using a noble metal catalyst and a polycyclic quinone as a co-catalyst leads to high and well-reproducible yields of 2,2'-dichloro-hydrazobenzene when the quinone is a derivative of anthraquinone, especially a hydroxy-anthraquinone. The product is obtained in so high a quality that it can be transformed without isolation or purification into 3,3'-dichlorobenzidine.

    Abstract translation: 使用贵金属催化剂和多环醌作为助催化剂，在升高的温度和压力下加入芳族非水溶性溶剂，邻位硝基氯苯在碱金属氢氧化物水溶液中的催化氢化导致高和良好 - 当醌是蒽醌衍生物，特别是羟基 - 蒽醌时，可以制得2,2'-二氯 - 苯肼的重复产率。 该产品的质量非常高，可以不经分离或纯化转化成3,3'-二氯联苯胺。

    Process for preparing hydrazine hydrohalogenide
    6.
    发明授权
    Process for preparing hydrazine hydrohalogenide 失效
    制备氢卤化肼的方法

    公开(公告)号：US4628119A

    公开(公告)日：1986-12-09

    申请号：US702553

    申请日：1985-02-19

    Applicant: Takanari Nawata ,  Shuzabu Sakaguchi ,  Osamu Aoki

    Inventor： Takanari Nawata ,  Shuzabu Sakaguchi ,  Osamu Aoki

    IPC: B01J23/00 ,  B01J27/122 ,  C01B21/16 ,  C07C109/04

    CPC classification number: C07C251/88 ,  C01B21/16 ,  Y02P20/584

    Abstract: A process for preparing hydrazine hydrohalogenide is disclosed. The process comprises the steps of:(a) oxidizing benzophenone-imines with molecular oxygen in the presence of a copper halide catalyst to produce benzophenone-azines;(b) contacting the oxidation reaction mixture with an aqueous solution containing a hydrohalogenic acid thereby hydrolyzing the benzophenone-azines to produce a hydrazine hydrohalogenide and, simultaneously, extracting and removing the catalyst with the hydrohalogenic acid-containing aqueous solution to obtain an aqueous solution containing the hydrazine hydrohalogenide and the catalyst;(c) separating the aqueous solution and adjusting the solution to a pH of from 3 to 7 with an alkali;(d) contacting the aqueous solution with benzophenone-imines to extract the catalyst;(e) separating the catalyst-containing benzophenone-imines solution from the aqueous solution containing the hydrazine hydrohalogenide to recover the hydrazine hydrohalogenide and to recycle the catalyst-containing benzophenone-imines solution to step (a).The process is advantageous in that the catalyst is easily recovered for reuse.

    Abstract translation: 公开了一种制备氢卤酸肼的方法。 该方法包括以下步骤：（a）在卤化铜催化剂存在下用分子氧氧化二苯甲酮 - 亚胺，生成二苯甲酮 - 吖嗪; （b）使氧化反应混合物与含有氢卤酸的水溶液接触，从而水解二苯甲酮 - 吖嗪以产生氢卤酸肼，同时用含氢卤酸的水溶液萃取和除去催化剂，得到含有 肼氢卤化物和催化剂; （c）用碱分离水溶液并将溶液调节至3至7的pH; （d）使该水溶液与二苯甲酮 - 亚胺接触以提取催化剂; （e）从含有氢卤化肼的水溶液中分离含催化剂的二苯甲酮 - 亚胺溶液以回收氢卤酸肼，并将含有催化剂的二苯甲酮 - 亚胺溶液再循环到步骤（a）。 该方法的优点在于催化剂容易回收再利用。

    Process for the production of 1-anthraquinonyl hydrazine
    7.
    发明授权
    Process for the production of 1-anthraquinonyl hydrazine 失效
    生产1-蒽醌基肼的方法

    公开(公告)号：US4202827A

    公开(公告)日：1980-05-13

    申请号：US935035

    申请日：1978-08-18

    Applicant: Athanassios Tzikas

    Inventor： Athanassios Tzikas

    IPC: C07C243/22 ,  C07C67/00 ,  C07C241/00 ,  C07D231/54 ,  C07C109/04 ,  C07C103/75

    CPC classification number: C07D231/54 ,  C07C241/02 ,  C07C243/22

    Abstract: A process for the production of 1-anthraquinonyl hydrazines of the formula ##STR1## wherein X is hydrogen or --NH--NH.sub.2, which comprises reacting 1-nitroanthraquinones of the formula ##STR2## wherein Z is hydrogen or nitro, in aprotic dipolar solvents, with hydrazine or hydrazine hydrate, at normal or slightly elevated temperature, to give 1-anthraquinonyl hydrazines of the formula (1).

    Abstract translation: 制备式（1）的1-蒽醌基肼的方法，其中X是氢或-NH-NH 2，其包括使式（1）的1-硝基蒽醌反应，其中Z是氢 或硝基，在非质子偶极溶剂中，与肼或水合肼反应，在正常或轻微升高的温度下，得到式（1）的1-蒽醌基肼。

    2-Amino-2,6-dinitrophenylhydrazines
    9.
    发明授权
    2-Amino-2,6-dinitrophenylhydrazines 失效
    2-氨基-2,6-二硝基苯肼

    公开(公告)号：US3891706A

    公开(公告)日：1975-06-24

    申请号：US29414772

    申请日：1972-10-02

    Applicant: WILCOX MERRILL

    Inventor： WILCOX MERRILL

    IPC: A01N33/18 ,  A01N33/26 ,  A01N37/34 ,  A01N37/44 ,  A01N37/48 ,  A01N51/00 ,  C07C243/38 ,  C07D295/06 ,  C07D295/22 ,  C07D295/30 ,  C07C109/04

    CPC classification number: C07D295/30 ,  C07C243/00 ,  C07C243/38

    Abstract: 3-amino-2,6-dinitrophenylhydrazines of the formula

    WHEREIN Y is halogen, haloalkyl carbamyl, lower alkyl substituted carbamyl, carboxyl, lower alkoxy carbonyl, trifluoromethyl, nitro or cyano; Z is amino which is optionally substituted with lower alkyl, lower alkoxy, substituted lower alkyl, substituted lower alkoxy or mono or di-lower alkylamino, with the proviso that not more than one of the substituents is alkoxy, substituted alkoxy or mono or di-lower alkylamino; R1 is H, lower alkyl or lower alkenyl, said alkyl and alkenyl groups are optionally substituted with halogen, lower alkoxy, phenyl or cycloalkyl; R2 and R3 are independently H, C1-C5 alkyl, C2-C5 alkenyl, said alkyl and alkenyl groups are optionally substituted with cycloalkyl groups; R2 and R3 can also be taken together with the nitrogen atom to which they are linked forming the ring structures piperidino, hexamethylenimino, morpholino, or 4methylpiperazino. These compounds are very active plant growth regulators and are particularly useful as herbicides and in tobacco sucker control.

    Abstract translation: 3-氨基-2,6-二硝基苯肼，其结构式为：Y是卤素，卤代烷基氨基甲酰基，低级烷基取代的氨基甲酰基，羧基，低级烷氧基羰基，三氟甲基，硝基或氰基; Z是任选被低级烷基，低级烷氧基，取代的低级烷基，取代的低级烷氧基或单或二低级烷基氨基取代的氨基，条件是不超过一个取代基是烷氧基，取代的烷氧基或单或二 - 低级烷基氨基; R 1是H，低级烷基或低级烯基，所述烷基和烯基任选被卤素，低级烷氧基，苯基或环烷基取代; R2和R3独立地为H，C1-C5烷基，C2-C5烯基，所述烷基和烯基任选被环烷基取代; R2和R3也可以与它们所连接的氮原子一起形成环结构哌啶子基，六亚甲基亚氨基，吗啉代或4-甲基哌嗪基。

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