Processes for producing 4,6-bis (substituted)phenylazoresorcinols
    1.
    发明授权
    Processes for producing 4,6-bis (substituted)phenylazoresorcinols 失效
    生产4,6-双(取代)苯基次氮杂环戊烯的方法

    公开(公告)号:US5962740A

    公开(公告)日:1999-10-05

    申请号:US66335

    申请日:1998-04-28

    IPC分类号: C07C245/08 C07C213/02

    CPC分类号: C07C245/08

    摘要: A process for producing 4,6-bisphenylazoresorcinol of formula �2! wherein R represents halogen atom, C.sub.1-5 alkyl group, hydroxycarbonyl or C.sub.1-5 alkoxy group, n represents 0 or an integer of 1 to 5, and two or more Rs are the same or different from each other, which comprises reacting resorcinol with a benzenediazonium salt of formula �1! wherein R and n are the same as defined in the above formula �1!, and X represents Cl, Br, OSO.sub.3 H or OPO.sub.3 H.sub.2, in an alkaline solvent, characterized in that (a) a solution of the compound of the formula �1! is mixed with a solution or suspension of an alkali metal or alkaline earth metal hydroxide to obtain an alkaline mixture, and this alkaline mixture is mixed to be reacted with a solution or suspension containing resorcinol and/or its alkali metal salt or alkaline earth metal salt, or (b) a solution of the compound of formula �1! is mixed to be reacted with a solution or suspension of a mixture of resorcinol with its alkali metal hydroxide or alkaline earth metal hydroxide 15 to 40 times by mol as much as the resorcinol. By the above-described method, the reaction volume can be reduced as compared with the conventional processes, and 4,6-bisphenylazoresorcinol can be obtained in high yield.

    摘要翻译: PCT No.PCT / JP96 / 03199 Sec。 371日期:1998年4月28日 102(e)1998年4月28日PCT PCT 1996年10月31日PCT公布。 第WO97 / 16411号公报 日期1997年5月9日制备式[2]的4,6-双苯​​并苯并氮杂酚的方法,其中R表示卤素原子,C 1-5烷基,羟基羰基或C 1-5烷氧基,n表示0或1〜5的整数, 两个或多个Rs相同或不同,其包括使间苯二酚与式[1]的苯二氮鎓盐反应,其中R和n与上式[1]中定义相同,X表示Cl,Br, OSO 3 H或OPO 3 H 2,在碱性溶剂中,其特征在于:(a)式[1]化合物的溶液与碱金属或碱土金属氢氧化物的溶液或悬浮液混合,得到碱性混合物, 将碱性混合物与含有间苯二酚和/或其碱金属盐或碱土金属盐的溶液或悬浮液混合,或(b)将式[1]化合物的溶液与溶液或溶液反应,或 间苯二酚与其碱金属氢氧化物的混合物悬浮 de或碱土金属氢氧化物为间苯二酚的15〜40倍摩尔。 通过上述方法,与常规方法相比可以降低反应体积,可以高产率获得4,6-双苯​​并氮杂间苯二酚。

    Process for preparation of 4,6-diaminoresorcinol or salts thereof
    2.
    发明授权
    Process for preparation of 4,6-diaminoresorcinol or salts thereof 有权
    制备4,6-二氨基间苯二酚或其盐的方法

    公开(公告)号:US06222074B1

    公开(公告)日:2001-04-24

    申请号:US09600551

    申请日:2000-07-25

    IPC分类号: C07C21302

    CPC分类号: C07C213/02 C07C215/80

    摘要: The invention relates to a process for preparation of 4,6-diaminoresorcinol or salts thereof by reducing 4,6-bis(substituted)phenylazoresorcinol expressed by the formula [1] wherein, R denotes a halogen atom, an alkyl group having 1-5 carbon atoms, a hydroxycarbonyl group or an alkoxy group having 1-5 carbon atoms, n denotes 0 or any integer of 1-5, and two or more groups R may be same or different each other, for example, 4,6-bisphenylazoresorcinol, with hydrogen in the presence of a metal catalyst to obtain 4,6-diaminoresorcinol or salts thereof, characterized in that an aliphatic nitrile compound (for example, acetonitrile) is used as a solvent, or characterized in that the reduction is carried out by using at least one organic solvent selected from aliphatic nitrile compounds, aliphatic alcohols having 3-5 carbon atoms, dioxane and ethylene glycol monomethyl ether, etc. as a solvent and furthermore in the presence of a filter aid (for example, active carbon). According to the said preparation process, 4,6-diaminoresorcinol with high purity can be easily obtained from 4,6-bis(substituted)phenylazoresorcinol in a high yield.

    摘要翻译: 本发明涉及通过还原由式[1]表示的4,6-双(取代的)苯基次氮杂环戊烯来制备4,6-二氨基间苯二酚或其盐的方法,其中R表示卤素原子,具有1-5个 碳原子,羟基羰基或具有1-5个碳原子的烷氧基,n表示0或1-5的整数,并且两个或更多个基团R可以相同或不同,例如,4,6-双苯​​并苯并氮杂酚 在金属催化剂存在下用氢气得到4,6-二氨基间苯二酚或其盐,其特征在于使用脂族腈化合物(例如乙腈)作为溶剂,或其特征在于还原是通过 使用至少一种选自脂族腈化合物,具有3-5个碳原子的脂族醇,二恶烷和乙二醇单甲醚等作为溶剂的有机溶剂,并且在助滤剂(例如活性炭)存在下进行。 根据所述制备方法,可以从4,6-双(取代)苯基次氮基间苯二酚以高产率容易地得到高纯度的4,6-二氨基间苯二酚。

    Phenylphosphonic acid derivative and production process therefor
    3.
    发明授权
    Phenylphosphonic acid derivative and production process therefor 失效
    苯基膦酸衍生物及其制备方法

    公开(公告)号:US5880309A

    公开(公告)日:1999-03-09

    申请号:US8244

    申请日:1998-01-15

    IPC分类号: C07F9/38 C07F9/40

    CPC分类号: C07F9/3834 C07F9/4021

    摘要: A dialkyl dialkoxycarbonylphenylphosphonate which is useful as a resin modifier, a process for producing the same in high yield at a low cost, and a process for producing a dicarboxyphenylphosphonic acid in high yield at a low cost are described.The process for producing a dialkyl dialkoxycarbonylphenylphosphonate comprises heating and reacting a dialkoxycarbonylphenyl halide with a trialkyl phosphate in the presence of a catalyst comprising an element of group VIII of the periodic table (such as an alumina supported palladium catalyst) and hydrolyzing the obtained dialkyl dialkoxycarbonylphenylphosphonate in the presence of an acid or base to produce a dicarboxyphenylphosphonic acid.

    摘要翻译: 描述了可用作树脂改性剂的二烷基二烷氧基羰基苯基膦酸酯,以低成本高产率地制备其的方法和以低成本高产率生产二羧基苯基膦酸的方法。 制备二烷基二烷氧基羰基苯基膦酸二烷基酯的方法包括在包含元素周期表第Ⅷ族元素(如氧化铝负载的钯催化剂)的催化剂存在下,加热和反应二烷氧基羰基苯基卤化物与磷酸三烷基酯,并将得到的二烷基二烷氧基羰基苯基膦酸酯水解 存在酸或碱以产生二羧基苯基膦酸。

    Derivative of phosphonic acid and process for the preparation thereof
    4.
    发明授权
    Derivative of phosphonic acid and process for the preparation thereof 失效
    膦酸衍生物及其制备方法

    公开(公告)号:US5847199A

    公开(公告)日:1998-12-08

    申请号:US957026

    申请日:1997-10-24

    IPC分类号: C07F9/38 C08K5/5317 C07F9/40

    CPC分类号: C08K5/5317 C07F9/3834

    摘要: To provide 2,5-dicarboxyphenyl phosphonic acid and a process for the preparation thereof, comprising the steps of: forming a reaction liquid phase by supplying a 2,5-dialkylphenyl phosphonic acid, a solvent, a cobalt salt, a manganese salt and/or a cerium salt, and bromine or a bromine compound into a reaction zone; and supplying oxygen into the reaction liquid phase by bringing an oxygen-containing gas into contact with the reaction liquid phase by supplying an oxygen-containing gas into the above-mentioned reaction zone.

    摘要翻译: 为了提供2,5-二羧基苯基膦酸及其制备方法,包括以下步骤:通过将2,5-二烷基苯基膦酸,溶剂,钴盐,锰盐和/ 或铈盐,溴或溴化合物转化成反应区; 并通过使含氧气体通过向上述反应区域供给含氧气体使含氧气体与反应液相接触而将氧气供给到反应液相中。

    Process for the preparing bromoisophithalic acid compound
    5.
    发明授权
    Process for the preparing bromoisophithalic acid compound 失效
    制备溴代间苯二甲酸化合物的方法

    公开(公告)号:US06855845B2

    公开(公告)日:2005-02-15

    申请号:US10296500

    申请日:2001-05-30

    摘要: The present invention relates to a process for preparing bromoisophthalic acid compounds, particularly 5-bromoisophthalic acid compounds and 4,5-dibromoisophthalic acid compounds comprising brominating an isophthalic acid compound of the general formula (1) wherein R1 and R2 independently of one another are hydrogen atom or C1-6 alkyl, with bromine in a solvent containing sulfur trioxide. The object of the invention is to provide a process for preparing bromoisophthalic acid compounds, particularly 5-bromoisophthalic acid compounds and 4,5-dibromoisophthalic acid compounds in a highly selective manner by using bromine that is industrially inexpensive.

    摘要翻译: 本发明涉及一种制备溴代间苯二甲酸化合物,特别是5-溴代间苯二甲酸化合物和4,5-二溴间苯二甲酸化合物的方法,其包括将通式(1)的间苯二甲酸化合物溴化,其中R 1和R 2均为 彼此是氢原子或C 1-6烷基,溴在含有三氧化硫的溶剂中。 本发明的目的是提供一种通过使用工业上便宜的溴以高度选择性的方式制备溴代间苯二甲酸化合物,特别是5-溴代间苯二甲酸化合物和4,5-二溴间苯二甲酸化合物的方法。

    Process for preparing N-methylated melamines
    6.
    发明授权
    Process for preparing N-methylated melamines 失效
    制备N-甲基化三聚氰胺的方法

    公开(公告)号:US06878824B2

    公开(公告)日:2005-04-12

    申请号:US10390706

    申请日:2003-03-19

    IPC分类号: C07D251/56 C07D251/70

    CPC分类号: C07D251/56

    摘要: The present invention provides a process for preparing N-methylated melamines in simple steps by using inexpensive raw materials in such a manner that the proportion of mono-type, bis-type and tris-type of the N-methylated melamines as prepared can be controlled. The process comprises reacting by heating melamine with methylamine in the presence of an acidic catalyst under pressure to substitute at least one amino group of the melamine by methylamino group.

    摘要翻译: 本发明提供了以简单的步骤制备N-甲基化三聚氰胺的方法,其方法是以可以控制所制备的N-甲基化三聚氰胺的单型,双型和三种类型的比例来控制 。 该方法包括通过在压力下在酸性催化剂存在下加三聚氰胺与甲胺反应,以通过甲基氨基代替至少一个三聚氰胺的氨基。

    Process for producing a 6-subsitituted 2(1H)-quinoxalinone
    9.
    发明授权
    Process for producing a 6-subsitituted 2(1H)-quinoxalinone 失效
    生产6-取代的2(1H) - 喹喔啉酮的方法

    公开(公告)号:US5786479A

    公开(公告)日:1998-07-28

    申请号:US687439

    申请日:1996-08-13

    IPC分类号: C07D241/44 C07D241/36

    CPC分类号: C07D241/44

    摘要: A process for producing a 6-substituted 2(1H)-quinoxalinone of the formula (I): ##STR1## wherein X is a halogen atom, a trihalogeno-substituted C.sub.1-5 alkyl group or a nitro group, which comprises reacting a 6-substituted 2(1H)-quinoxalinone-N-oxide of the formula (II): ##STR2## wherein X is as defined above, with an alkali metal hydrosulfide and/or an alkali metal sulfide in the presence of from 1 to 20 mol times of an alkali.

    摘要翻译: PCT No.PCT / JP95 / 00173 Sec。 371日期:1996年8月13日 102(e)日期1996年8月13日PCT提交1995年2月8日PCT公布。 公开号WO95 / 22531 日期:1995年8月24日制备式(I)的6-取代的2(1H) - 喹喔啉酮的方法:其中X为卤素原子,三卤代取代的C 1-5烷基或 硝基,其包括使式(II)的其中X如上所定义的6-取代的2(1H) - 喹喔啉酮-N-氧化物与碱金属氢硫化物和/或碱 金属硫化物在1至20摩尔碱的存在下进行。

    Process for producing 2-(4-hydroxyphenoxy) propionate derivatives
    10.
    发明授权
    Process for producing 2-(4-hydroxyphenoxy) propionate derivatives 失效
    2-(4-羟基苯氧基)丙酸酯衍生物的制备方法

    公开(公告)号:US4537984A

    公开(公告)日:1985-08-27

    申请号:US604156

    申请日:1984-04-26

    IPC分类号: C07C69/712 C07C69/76

    CPC分类号: C07C69/712

    摘要: A process for producing a 2-(4-hydroxyphenoxy) propionate derivative represented by the formula: ##STR1## where Alk is a C.sub.1 -C.sub.5 alkyl group, which comprises reacting a phenoxy propionate derivative represented by the formula: ##STR2## where Alk is as defined above, with a peroxide to obtain a formate derivative represented by the formula: ##STR3## where Alk is as defined above, and hydrolyzing the formate of the formula III.

    摘要翻译: 一种制备式(Ⅰ)所示的2-(4-羟基苯氧基)丙酸酯衍生物的方法,其中Alk是C1-C5烷基,其中包括使由下式表示的苯氧基丙酸酯衍生物: (II)其中Alk如上所定义,与过氧化物反应,得到式(III)表示的甲酸酯衍生物,其中Alk如上所定义,并水解式III的甲酸酯。