Ammonation of trialkanolamines
    1.
    发明授权
    Ammonation of trialkanolamines 失效
    三烷醇胺的氨化

    公开(公告)号:US4328370A

    公开(公告)日:1982-05-04

    申请号:US20891

    申请日:1979-03-15

    申请人: Michael J. Fazio

    发明人: Michael J. Fazio

    CPC分类号: C07C215/08 C07C215/12

    摘要: Lower trialkanolamines such as triethanolamine and triisopropanolamine are converted to the corresponding mono- and dialkanolamine by reacting with ammonia at about 150.degree. C.-275.degree. C. under superatmospheric pressure in the presence of a hydrogenation catalyst. The process is particularly useful for the recovery of alkanolamine values from still bottoms of alkanolamine production processes.

    摘要翻译: 低级三烷醇胺如三乙醇胺和三异丙醇胺通过在氢气催化剂存在下,在大气压下,在约150-275℃与氨反应,转化为相应的单 - 和二烷醇胺。 该方法对于从链烷醇胺生产方法的仍然底部回收链烷醇胺特别有用。

    Production of monoalkyleneglycols, monoalkanolamines and alkylenediamine
    2.
    发明授权
    Production of monoalkyleneglycols, monoalkanolamines and alkylenediamine 失效
    单亚烷基二醇,单链烷醇胺和亚烷基二胺的生产

    公开(公告)号:US4272455A

    公开(公告)日:1981-06-09

    申请号:US107287

    申请日:1979-12-26

    CPC分类号: C07C29/00 C07C29/095

    摘要: A method for the formation of monoalkyleneglycols, monoalkanolamines and alkylenediamines, comprising the steps of: (a) reacting ammonia or ammonium carbonate with an alkylenecarbonate to form a carbamate, (b) heating the carbamate to form a monoalkyleneglycol, an alkyleneurea and a 2-oxazolidinone, (c) further reacting the alkyleneurea and the 2-oxazolidinone with ammonium hydroxide to form ammonia or ammonium carbonate, a monoalkanolamine, and an alkylenediamine, (d) separating the ammonia or ammonium carbonate, the monoalkyleneglycol, the alkylenediamine, and the monoalkanolamine, and (e) recycling the ammonia or ammonium carbonate to reaction step (a).

    摘要翻译: 一种形成单亚烷基二醇,单烷醇胺和亚烷基二胺的方法,包括以下步骤:(a)使氨或碳酸铵与亚烷基碳酸酯反应以形成氨基甲酸酯,(b)加热氨基甲酸酯以形成单亚烷基二醇,亚烷基脲和2- 恶唑烷酮,(c)使亚烷基脲和2-恶唑烷酮与氢氧化铵进一步反应以形成氨或碳酸铵,单烷醇胺和亚烷基二胺,(d)分离氨或碳酸铵,单亚烷基二醇,亚烷基二胺和单链烷醇胺 ,和(e)将氨或碳酸铵再循环到反应步骤(a)中。

    Synthesis of ethambutol
    3.
    发明授权
    Synthesis of ethambutol 失效
    乙胺丁醇的合成

    公开(公告)号:US3944618A

    公开(公告)日:1976-03-16

    申请号:US493802

    申请日:1974-08-01

    申请人: Balwant Singh

    发明人: Balwant Singh

    IPC分类号: C07C89/00 C07C89/04 C07C91/04

    摘要: D-2-Amino-1-butanol, for the synthesis of ethambutol hydrochloride, d,d'-2,2'-(ethylenediimino)di-1-butanol dihydrochloride, is produced in high purity and good yields by the reaction of butene-1, a nitrile, preferably an excess of acetonitrile, and chlorine to form N-[1-(chloromethyl)propyl]acetimidoyl chloride which is hydrolyzed to dl-2-amino-1-butanol, which can be isolated as the hydrochloride, or free base, or a mixture, resolved with L(+)-tartaric acid and the d-2-amino-1-butanol reacted with ethylene dichloride and then hydrochloric acid to form ethambutol hydrochloride. A minimum of by-products which are conveniently split out permits the economical synthesis of a pharmaceutical grade product.

    摘要翻译: 用于合成乙胺丁醇盐酸盐d,d'-2,2' - (乙二胺基)二-1-丁醇二盐酸盐的D-2-氨基-1-丁醇通过丁烯反应以高纯度和良好的收率生产 -1,腈,优选过量的乙腈和氯,以形成水解成dl-2-氨基-1-丁醇的N- [1-(氯甲基)丙基]亚氨代乙酰氯,其可以作为盐酸盐分离, 或游离碱或混合物,用L(+) - 酒石酸和d-2-氨基-1-丁醇分解,与二氯乙烷反应,然后与盐酸反应,形成乙胺丁醇盐酸盐。 方便分开的最少副产物允许经济地合成药物级产品。

    Process for preparing p-aminophenol and alkyl substituted p-aminophenol
    4.
    发明授权
    Process for preparing p-aminophenol and alkyl substituted p-aminophenol 失效
    制备对氨基苯酚和烷基取代的对氨基苯酚的方法

    公开(公告)号:US4415753A

    公开(公告)日:1983-11-15

    申请号:US343993

    申请日:1982-01-29

    CPC分类号: C07C215/76

    摘要: A process for the production of unsubstituted and lower alkyl substituted p-aminophenols. A charge mixture is prepared comprising an unsubstituted or lower alkyl substituted nitrobenzene substrate, a platinum catalyst and a sulfur compound. The sulfur compound may be a divalent sulfur compound in which sulfur is bonded to two other moieties or a compound reducible to such sulfur compound under catalytic hydrogenation conditions. Hydrogen is introduced into the mixture while it is agitated at a temperature of 0.degree.-40.degree. C., thereby reducing the substrate to an unsubstituted or alkyl substituted phenylhydroxylamine. The hydroxylamine is thereafter heated to a temperature of at least 70.degree. C. and agitated at at least 70.degree. C. in the presence of a highly dissociated acid, thereby effecting rearrangement of the hydroxylamine to the corresponding p-aminophenol.

    摘要翻译: 一种制备未取代和低级烷基取代的对氨基苯酚的方法。 制备包含未取代或低级烷基取代的硝基苯底物,铂催化剂和硫化合物的电荷混合物。 硫化合物可以是二价硫化合物,其中硫在催化氢化条件下结合到两个其它部分或可还原成这种硫化合物的化合物。 将氢气在0℃-40℃的温度下搅拌引入混合物中,从而将底物还原成未取代或烷基取代的苯基羟胺。 然后将羟胺加热至至少70℃的温度,并在高度离解的酸存在下在至少70℃下搅拌,从而实现羟胺重排为相应的对氨基苯酚。

    Process for producing p-hydroxybenzaldehyde
    5.
    发明授权
    Process for producing p-hydroxybenzaldehyde 失效
    对羟基苯甲醛生产方法

    公开(公告)号:US4273941A

    公开(公告)日:1981-06-16

    申请号:US55414

    申请日:1979-07-06

    IPC分类号: C07C45/64 C07C85/11 C07C89/00

    CPC分类号: C07C45/64

    摘要: A process for producing p-hydroxybenzaldehyde through p-aminobenzaldehyde from p-nitrotoluene, comprising reacting p-nitrotoluene with sodium polysulphide in an alcohol-alkali aqueous solution mixed solvent in the presence or absence of an aprotic polar compound to produce p-aminobenzaldehyde, diazotizing the p-aminobenzaldehyde and then hydrolyzing the diazotized p-aminobenzaldehyde to produce p-hydroxybenzaldehyde.

    摘要翻译: 在对硝基甲苯中通过对氨基苯甲醛生产对羟基苯甲醛的方法,包括在存在或不存在非质子极性化合物的情况下,将对硝基甲苯与多硫化钠在醇 - 碱水溶液混合溶剂中反应生成对氨基苯甲醛,重氮化 对氨基苯甲醛,然后水解重氮化的对氨基苯甲醛以产生对羟基苯甲醛。

    Borate reduction of nitrophenols
    6.
    发明授权
    Borate reduction of nitrophenols 失效
    硼酸盐还原硝基酚

    公开(公告)号:US4264526A

    公开(公告)日:1981-04-28

    申请号:US54388

    申请日:1979-07-02

    CPC分类号: C07C215/76

    摘要: A process for the direct production of aminophenol and N-acetyl-p-aminophenol from nitrophenols using a borate ion additive during hydrogenation to eliminate undesirable by-products and color formation.

    摘要翻译: 在氢化期间使用硼酸盐离子添加剂从硝基酚直接生产氨基苯酚和N-乙酰基对氨基苯酚的方法,以消除不期望的副产物和颜色形成。

    Process for producing bis(N,N-dialkylamino)alkyl ethers employing sulfur
trioxide vapor
    7.
    发明授权
    Process for producing bis(N,N-dialkylamino)alkyl ethers employing sulfur trioxide vapor 失效
    使用三氧化硫蒸气生产双(N,N-二烷基氨基)烷基醚的方法

    公开(公告)号:US4247482A

    公开(公告)日:1981-01-27

    申请号:US103210

    申请日:1979-12-13

    申请人: Fedor Poppelsdorf

    发明人: Fedor Poppelsdorf

    CPC分类号: C08G18/1833 C08G18/2081

    摘要: A process is provided for producing bis-(N,N-dialkylamino)alkyl ethers of the formula (R.sub.2 NR').sub.2 O, wherein R is a methyl or ethyl group and R' is a bivalent alkylene group having from 2 to 3 carbon atoms. The novel process is effected by a two-step, preferably "one pot," reaction that utilizes SO.sub.3 vapor and R.sub.2 NR'ONa as reactants, wherein R and R' are defined above. The resulting bis-ethers are useful as catalysts in the production of polyurethanes, especially cellular polyurethanes.

    摘要翻译: 提供了制备式(R2NR')2O的二 - (N,N-二烷基氨基)烷基醚的方法,其中R是甲基或乙基,R'是具有2至3个碳原子的二价亚烷基。 该新方法通过利用SO 3蒸气和R2NR'ONa作为反应物的两步优选“一锅”反应实现,其中R和R'如上定义。 所得双醚可用作生产聚氨酯,特别是细胞聚氨酯的催化剂。