Process for the manufacture of dicyanovinyl compounds
    2.
    发明授权
    Process for the manufacture of dicyanovinyl compounds 失效
    制备二氰乙烯基化合物的方法

    公开(公告)号:US4006178A

    公开(公告)日:1977-02-01

    申请号:US563006

    申请日:1975-03-27

    CPC classification number: C07C255/00 C09B23/14

    Abstract: Process for the manufacture of aromatic, heteroaromatic or aliphatic compounds which contain at least one radical of the formula ##STR1## wherein R denotes a hydrogen atom or an alkyl, cycloalkyl or aralkyl radical, characterized in that an aromatic or heteroaromatic compound, which carries one or more electron-donating substituent with negative Brown substitution constants .delta..sub.p .sup.+ and without mobile hydrogen atoms, a .pi.-excess-hetero-aromatic compound or a CH-acid compound is reacted with a 2,2-dicyanoethylene of the formula ##STR2## wherein X is a halogen atom, preferably chlorine or bromine, and R has the abovementioned meaning, without the presence of Lewis acids, in an anhydrous, preferably organic, medium, with an acid-binding agent optionally being added as a further component.

    Abstract translation: 制备芳族,杂芳族或脂族化合物的方法,其含有至少一个下式的基团,其中R表示氢原子或烷基,环烷基或芳烷基,其特征在于芳族或杂芳族化合物,其携带一种 或更多具有负棕色取代常数δp +且不具有可移动氢原子的给电子取代基,将π-过渡杂芳族化合物或CH-酸化合物与式II的2,2-二氰基乙烯反应, 其中X是卤素原子,优选氯或溴,R具有上述含义,不存在路易斯酸,在无水,优选有机介质中,任选加入酸结合剂作为另外的组分 。

    Process for purifying crude monochloro- and monobromoanthraquinone
    3.
    发明授权
    Process for purifying crude monochloro- and monobromoanthraquinone 失效
    纯化单氯代和单溴蒽醌的方法

    公开(公告)号:US4507240A

    公开(公告)日:1985-03-26

    申请号:US554651

    申请日:1983-11-23

    CPC classification number: C07C50/24

    Abstract: A process for purifying crude monochloro- or monobromoanthraquinone is described. In this process, monochloro- or monobromoanthraquinone which contains by-products as impurities is mixed with a hot non-polar aliphatic solvent in such a ratio that more than half of the crude product goes into solution and the remainder which contains the impurities forms a second lower phase, said eutectic melt is separated, and the saturated solution is allowed to cool, and the monochloro- or monobromoanthraquinone, which precipitates in pure form, is isolated.

    Abstract translation: 描述了纯化一氯或一溴蒽醌的方法。 在该方法中,将含有副产物作为杂质的单氯代或单溴蒽醌与热非极性脂族溶剂混合,使得一半以上的粗产物进入溶液,剩下的杂质形成第二 低相,分离出共晶熔体,使饱和溶液冷却,分离出纯的沉淀的单氯或单溴蒽醌。

    Process for producing 2-halo-4-bromophenols
    4.
    发明授权
    Process for producing 2-halo-4-bromophenols 失效
    2-卤代-4-溴苯酚的制备方法

    公开(公告)号:US4210766A

    公开(公告)日:1980-07-01

    申请号:US935837

    申请日:1978-08-22

    CPC classification number: C07C37/62

    Abstract: A process for the production of 2-halo-4-bromophenols of the formula ##STR1## in which X represents chlorine or bromine, is disclosed, which process comprises reacting a brominating agent with a 2-halophenol in the presence of a mixed catalyst consisting of a halide of zinc, iron, aluminium or cobalt, and a diphenyl sulfide of the formula ##STR2## in which R represents methyl or halogen, and n represents 0 to 3. The new process substantially avoids the formation of undesired 2,6-isomers and the 2-halo-4-bromophenols of the above formula are obtained in excellent yield and purity.

    Abstract translation: 公开了制备其中X表示氯或溴的式“IMAGE”的2-卤代-4-溴苯酚的方法,该方法包括在混合催化剂存在下使溴化剂与2-卤代苯酚反应,所述混合催化剂包括 的锌,铁,铝或钴的卤化物和式“IMAGE”的二苯硫醚,其中R表示甲基或卤素,n表示0至3.新方法基本上避免形成不期望的2,6- 得到上述通式的异构体和2-卤代-4-溴苯酚,产率和纯度优异。

    Process for the preparation of 1-aminoanthraquinones
    5.
    发明授权
    Process for the preparation of 1-aminoanthraquinones 失效
    1-氨基蒽醌的制备方法

    公开(公告)号:US4770818A

    公开(公告)日:1988-09-13

    申请号:US110162

    申请日:1987-10-19

    CPC classification number: C09B1/201

    Abstract: There is disclosed a process for the preparation of 1-aminoanthraquinones from 5-nitro-1,4,4a,9a-tetrahydroanthraquinones with a basic reducing agent, which process is carried out under pressure in the temperature range above 100.degree. C. and in an aqueous-organic medium. The process affords very pure 1-aminoanthraquinone, which is, inter alia, an important intermediate.

    Abstract translation: 公开了用碱还原剂从5-硝基-1,4,4a,9a-四氢蒽醌制备1-氨基蒽醌的方法,该方法在压力下在100℃以上的温度下进行, 水 - 有机介质。 该方法提供非常纯的1-氨基蒽醌,其特别是重要的中间体。

    Novel process for preparation of benzotriazoles using aryldiols and
quinones
    6.
    发明授权
    Novel process for preparation of benzotriazoles using aryldiols and quinones 失效
    使用芳基二醇和醌制备苯并三唑的新方法

    公开(公告)号:US4642350A

    公开(公告)日:1987-02-10

    申请号:US810544

    申请日:1985-12-18

    CPC classification number: C07D249/20

    Abstract: Process for preparing 2-(2'-hydroxyphenyl)-benzotriazoles of the formula ##STR1## from 2-nitro-2'-hydroxyazobenzenes of the formula ##STR2## which comprises reducing a 2-nitro-2'-hydroxyazobenzene compound in a strongly basic medium in the presence of an aromatic dihydroxy or dioxo compound as catalyst and of an alcohol having more than one carbon atom. The 2-(2'-hydroxyphenyl)-benzotriazole compounds are known stabilizers for organic materials.

    Abstract translation: 由式“IMAGE”的2-硝基-2'-羟基偶氮苯制备式(IMAGE)的2-(2'-羟基苯基) - 苯并三唑的方法,该方法包括强烈地还原2-硝基-2'-羟基偶氮苯化合物 在作为催化剂的芳族二羟基或二氧代化合物和具有多于一个碳原子的醇存在下的碱性介质。 2-(2'-羟基苯基) - 苯并三唑化合物是有机材料的已知稳定剂。

    Process for the preparation of bromoanthraquinones
    7.
    发明授权
    Process for the preparation of bromoanthraquinones 失效
    制备溴蒽醌的方法

    公开(公告)号:US4543214A

    公开(公告)日:1985-09-24

    申请号:US554650

    申请日:1983-11-23

    CPC classification number: C07C50/24

    Abstract: A process for the preparation of pure bromoanthraquinones by denitrobrominating corresponding nitroanthraquinones is described. The process comprises treating nitroanthraquinones of the formula I ##STR1## wherein X is hydroxy, mercapto, carboxy or halogen and m is 1, 2, 3 or 4 and n is 1 or 2, in the temperature range from 200.degree. to 350.degree. C.Bromoanthraquinones of more than 95% purity are valuable starting materials for dye synthesis and can be used directly without further purification.

    Abstract translation: 描述了通过脱硝相应的硝基蒽醌来制备纯溴蒽醌的方法。 该方法包括在200℃至350℃的温度范围内处理式I的硝基蒽醌,其中X为羟基,巯基,羧基或卤素,m为1,2,3或4,n为1或2。 纯度高于95%的溴蒽醌是用于染料合成的有价值的原料,可直接使用而无需进一步纯化。

    Process for the production of substituted benzal and benzyl bromides
    8.
    发明授权
    Process for the production of substituted benzal and benzyl bromides 失效
    用于制备取代的苄基和苄基溴的方法

    公开(公告)号:US4191621A

    公开(公告)日:1980-03-04

    申请号:US945957

    申请日:1978-09-26

    CPC classification number: C07C205/11 C07C201/12 C07C253/30 C07C255/50

    Abstract: The invention describes a process for the production of benzal or benzyl bromides which contain electrophilic substituents in the ortho- and/or para-position, or mixtures thereof, by the side-chain bromination of correspondingly substituted toluene, which comprises introducing elementary chlorine, under irradiation with visible light, into a two-phase system consisting of an aqueous phase and an organic phase and containing a correspondingly substituted toluene, at least one metal bromide, and a base, and also the compounds obtained by this process.

    Abstract translation: 本发明描述了通过相应取代的甲苯的侧链溴化,生产在邻位和/或对位或其混合物中含有亲电子取代基的亚苄基或苄基溴的方法,其包括将元素氯引入下面 用可见光照射成由水相和有机相组成并含有相应取代的甲苯,至少一种金属溴化物和碱的两相体系,以及由该方法获得的化合物。

    Process for the production of substituted toluene compounds
    9.
    发明授权
    Process for the production of substituted toluene compounds 失效
    生产取代甲苯化合物的方法

    公开(公告)号:US4165268A

    公开(公告)日:1979-08-21

    申请号:US846876

    申请日:1977-10-31

    CPC classification number: C07C205/11 C07B39/00 C07C17/14

    Abstract: A process for the production of benzal bromides which contain an electrophilic substituent in the ortho- and/or para-position of the formula (Ia), or of mixtures thereof with the corresponding benzyl bromides of the formula (Ib), ##STR1## IN WHICH R represents an electrophilic substituent in the ortho- and/or para position, by treating correspondingly substituted toluenes with elementary bromine under irradiation with visible light in a two-phase system which consists of an aqueous and an organic phase, which process comprises carrying out the reaction in the presence of a base.

    Abstract translation: 制备在式(Ia)的邻位和/或对位含有亲电子取代基的苄基溴的方法,或其与式(Ib)的相应的苄基溴,(IMA) (Ib)其中R表示邻位和/或对位的亲电子取代基,通过在两相体系中用可见光照射下用基本溴处理相应的取代的甲苯,该两相体系由水和 有机相,该方法包括在碱的存在下进行反应。

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