Preparation of bis(3-nitrophenoxy) compound
    1.
    发明授权
    Preparation of bis(3-nitrophenoxy) compound 失效
    双(3-硝基苯氧基)化合物的制备

    公开(公告)号:US5296635A

    公开(公告)日:1994-03-22

    申请号:US975952

    申请日:1992-11-13

    摘要: A preparation process of a bis(3-nitrophenoxy) compound represented by the formula: ##STR1## wherein X is a direct bond, divalent hydrocarbon having from 1 to 10 carbon atoms or a divalent group selected from --C(CF.sub.3).sub.2, --CO--, --S--, --SO--, SO.sub.2 --or --O--, which comprises reacting 4,4'-bisphenol with m-dinitrobenzene in the presence of an alkali metal carbonate or alkali metal hydrogen carbonate having a particle size of 250 .mu.m or less while removing generated water from the reaction system during the reaction. In one embodiment of the process, the reaction is carried out while simultaneously adding 4,4'-bisphenol and m-dinitrobenzene to a reaction vessel which was previously charged with the base and an aprotic polar solvent.

    摘要翻译: 由下式表示的双(3-硝基苯氧基)化合物的制备方法:其中X是直接键,具有1至10个碳原子的二价烃或选自-C(CF 3)2 - 的二价基团, CO-,-S-,-SO-,SO 2 - 或-O-,其包括在碱金属碳酸盐或粒度为250的碱金属碳酸氢盐存在下使4,4'-双酚与间二硝基苯反应 在反应期间从反应体系中除去产生的水。 在该方法的一个实施方案中,反应进行同时向预先装入碱和反质子极性溶剂的反应容器中加入4,4'-双酚和间二硝基苯。

    Process for producing 1,3-dimethyl-2-imidazolidinone
    2.
    发明授权
    Process for producing 1,3-dimethyl-2-imidazolidinone 失效
    1,3-二甲基-2-咪唑啉酮的制备方法

    公开(公告)号:US4668793A

    公开(公告)日:1987-05-26

    申请号:US794034

    申请日:1985-11-01

    IPC分类号: C07D233/32 C07D233/34

    CPC分类号: C07D233/32

    摘要: A process for producing 1,3-dimethyl-2-imidazolidinone with a high yield which comprises reacting N,N'-dimethylethylene diamine and/or its hydrochloride with phosgene in the presence of a substantial amount of water and a dehydrochlorinating agent. Particularly, higher yield is attained by carrying out the reaction in water medium while controlling a pH to the range of 3.0 to 10.0 by adding a dehydrochlorinating agent.

    摘要翻译: 一种以高产率生产1,3-二甲基-2-咪唑烷酮的方法,其包括在大量水和脱氯化氢剂的存在下使N,N'-二甲基乙二胺和/或其盐酸盐与光气反应。 特别地,通过在水介质中进行反应,同时通过加入脱氯化氢剂将pH控制在3.0至10.0的范围内来实现更高的产率。

    Method for preparing aromatic secondary amino compound
    3.
    发明授权
    Method for preparing aromatic secondary amino compound 失效
    芳香族仲氨基化合物的制备方法

    公开(公告)号:US5382690A

    公开(公告)日:1995-01-17

    申请号:US100149

    申请日:1993-08-02

    摘要: Disclosed are(1) a method for preparing an aromatic secondary amino compound which comprises reacting an N-cyclohexylideneamino compound in the presence of a hydrogen moving catalyst and a hydrogen acceptor by the use of a sulfur-free polar solvent and/or a cocatalyst, and(2) a method for preparing an aromatic secondary amino compound which comprises reacting cyclohexanone or a nucleus-substituted cyclohexanone, an amine and a nitro compound corresponding to the amine in a sulfur-free polar solvent in the presence of a hydrogen moving catalyst, a cocatalyst being added or not added.

    摘要翻译: 公开的是(1)一种制备芳香族仲氨基化合物的方法,其包括在氢移动催化剂和氢受体存在下,通过使用无硫极性溶剂和/或助催化剂使N-亚环己基氨基化合物反应, 和(2)一种制备芳族仲氨基化合物的方法,其包括在氢移动催化剂存在下,在无硫极性溶剂中使环己酮或核取代的环己酮,对应于胺的胺和硝基化合物反应, 添加或不添加助催化剂。

    Method for preparing aromatic secondary amino compound
    5.
    发明授权
    Method for preparing aromatic secondary amino compound 失效
    芳香族仲氨基化合物的制备方法

    公开(公告)号:US5536878A

    公开(公告)日:1996-07-16

    申请号:US353379

    申请日:1994-12-02

    摘要: Disclosed are (1) a method for preparing an aromatic secondary amino compound which comprises reacting an N-cyclohexylideneamino compound in the presence of a hydrogen moving catalyst and a hydrogen acceptor by the use of a sulfur-free polar solvent and/or a cocatalyst, and (2) a method for preparing an aromatic secondary amino compound which comprises reacting cyclohexanone or a nucleus-substituted cyclohexanone, an amine and a nitro compound corresponding to the amine in a sulfur-free polar solvent in the presence of a hydrogen moving catalyst, a cocatalyst being added or not added. In a further aspect, a method is provided for the preparation of aminodiphenylamine by reacting phenylenediamine and cyclohexanone in the presence of a hydrogen transfer catalyst in a sulfur-free polar solvent while using nitroaniline as a hydrogen acceptor.

    摘要翻译: 公开的是(1)一种制备芳香族仲氨基化合物的方法,其包括在氢移动催化剂和氢受体存在下,通过使用无硫极性溶剂和/或助催化剂使N-亚环己基氨基化合物反应, 和(2)一种制备芳族仲氨基化合物的方法,其包括在氢移动催化剂存在下,在无硫极性溶剂中使环己酮或核取代的环己酮,对应于胺的胺和硝基化合物反应, 添加或不添加助催化剂。 在另一方面,提供了一种通过在氢转移催化剂存在下,在无硫极性溶剂中使苯二胺和环己酮反应制备氨基二苯胺的方法,同时使用硝基苯胺作为氢受体。

    Process for producing cyclic ureas
    6.
    发明授权
    Process for producing cyclic ureas 失效
    生产环脲的方法

    公开(公告)号:US4900820A

    公开(公告)日:1990-02-13

    申请号:US53387

    申请日:1987-05-22

    摘要: A process for producing a cyclic diamine which comprises reacting a diamine of the formulaR--HN--R'--NH--R (II)wherein R represents a lower alkyl group and R' represents a lower alkyl group-substituted dimethylene group, trimethylene group, a lower alkyl group-substituted trimethylene group, tetramethylene group or a lower alkyl group-substituted tetramethylene group with urea in the presence of a polar solvent and at 180.degree. C. or higher, to obtain a cyclic urea ##STR1## wherein R and R' are each as defined above, the production yield being more improved by carrying out the initial period reaction at 140.degree. C. or lower.

    摘要翻译: 一种制备环二胺的方法,该方法包括使式R-HN-R'-NH-R(II)的二胺与其中R代表低级烷基和R'代表低级烷基取代的二亚甲基,三亚甲基 ,低级烷基取代的三亚甲基,四亚甲基或低级烷基取代的四亚甲基与脲在极性溶剂存在下并在180℃或更高温度下反应,得到环状脲(I) 其中R和R'各自如上所定义,通过在140℃或更低温度下进行初始周期反应,可以更好地提高产率。

    Process for producing alkoxy-substituted triphenylamines
    7.
    发明授权
    Process for producing alkoxy-substituted triphenylamines 失效
    制备烷氧基取代的三苯胺的方法

    公开(公告)号:US5654483A

    公开(公告)日:1997-08-05

    申请号:US575091

    申请日:1995-12-19

    摘要: A process for producing an alkoxy-substituted tri-phenylamine comprising reacting an alkoxy-substituted cyclohexanone with a diphenylamine or an aniline, while forming said cyclohexanone in the same system from an alkoxy-substituted phenol by using said phenol as a hydrogen acceptor, in the presence of a hydrogen transfer catalyst and a catalytic amount of the alkoxy-substituted cyclohexanone corresponding to the alkoxy-substituted phenol used for the reaction, or after converting partially the alkoxy-substituted phenol to a catalytic amount of the alkoxy-substituted cyclohexanone under a hydrogen pressure in the presence of a hydrogen transfer catalyst, wherein a surface-supported catalyst is used as the hydrogen transfer catalyst.

    摘要翻译: 一种制备烷氧基取代的三苯胺的方法,包括使烷氧基取代的环己酮与二苯胺或苯胺反应,同时通过使用所述苯酚作为氢受体,从烷氧基取代的苯酚形成所述环己酮,同时在 存在氢转移催化剂和催化量的对应于用于反应的烷氧基取代的苯酚的烷氧基取代的环己酮,或在氢气下部分将烷氧基取代的苯酚转化为催化量的烷氧基取代的环己酮之后 在氢转移催化剂存在下的压力,其中使用表面负载的催化剂作为氢转移催化剂。