Pure anhydrous crystallized acrylamidoglycolic acid and a method for the
preparation thereof
    1.
    发明授权
    Pure anhydrous crystallized acrylamidoglycolic acid and a method for the preparation thereof 失效
    纯无水结晶的丙烯酰基甘醇酸及其制备方法

    公开(公告)号:US4810822A

    公开(公告)日:1989-03-07

    申请号:US208787

    申请日:1988-06-15

    CPC classification number: C07C233/45

    Abstract: This acid is prepared by a method comprising reacting acrylamide with glyoxylic acid in an aqueous solution at a concentration equal to or higher than 60% and at a temperature of between 30.degree. C. and 80.degree. C., this method being characterized in that this reaction is carried out at a pH of less than 7, in the absence of a catalyst of any type whatsoever but in the presence of an organic solvent selected from the group comprising ethyl acetate, butyl acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone, tetrahydrofuran, diethylene glycol dimethyl ether.

    Abstract translation: 该酸通过包括使丙烯酰胺与乙醛酸在水溶液中以等于或高于60%的温度和30℃至80℃的温度反应的方法制备,该方法的特征在于, 反应在小于7的pH下进行,在不存在任何类型的催化剂的情况下,但在有机溶剂存在下,选自乙酸乙酯,乙酸丁酯,丙酮,甲基乙基酮,甲基异丁基酮 ,四氢呋喃,二甘醇二甲醚。

    Preparation process for piperonal
    4.
    发明授权
    Preparation process for piperonal 失效
    PIPERONAL的制备工艺

    公开(公告)号:US5095128A

    公开(公告)日:1992-03-10

    申请号:US608450

    申请日:1990-11-02

    CPC classification number: C07D317/54

    Abstract: Preparation process for piperonal by decarboxylating oxidation of 3,4-methylenedioxy mandelic acid by nitric acid in aqueous medium in the presence of hydrochloric acid.

    Abstract translation: 在盐酸存在下,通过硝酸在水介质中脱羧氧化3,4-亚甲二氧基扁桃酸,制备胡椒醌的制备方法。

    Pure crystalline methyl 2-acryloylamino-2-methoxy acetate and a process
for preparing IT
    5.
    发明授权
    Pure crystalline methyl 2-acryloylamino-2-methoxy acetate and a process for preparing IT 失效
    纯的2-丙烯酰氨基-2-甲氧基乙酸甲酯结晶性甲酯和制备IT的方法

    公开(公告)号:US4960923A

    公开(公告)日:1990-10-02

    申请号:US266485

    申请日:1988-11-02

    CPC classification number: C07C233/16

    Abstract: The process for preparing a novel product, pure crystalline methyl 2-acryloylamino-2-methoxyacetate, involves reacting pure crystalline, anhydrous acrylamido-glycolic acid in an anhydrous medium with methanol in the presence of hydrogen chloride. This is subsequently neutralized with an alkali metal bicarbonate, and then the mineral salts are filtered off. Finally, pure crystalline methyl 2-acryloylamino-2-methoxyacetate is obtained by taking up the concentrated reaction medium in 1,1,1-trichloroethane under vacuum.

    Abstract translation: 制备新型产物2-丙烯酰氨基-2-甲氧基乙酸酯的纯结晶性甲基丙烯酸酯的方法包括使无水介质中的纯结晶无水丙烯酰氨基乙醇酸与甲醇在氯化氢存在下反应。 随后用碱金属碳酸氢盐中和,然后滤出矿物盐。 最后,通过在真空下将1,1,1-三氯乙烷中的浓缩反应介质吸收,得到纯的2-丙烯酰基氨基-2-甲氧基乙酸2-甲酯。

    Method for producing bridged manganese complexes of triazacyclononane
    6.
    发明授权
    Method for producing bridged manganese complexes of triazacyclononane 有权
    三氮杂环壬烷桥联锰配合物的制备方法

    公开(公告)号:US09012630B2

    公开(公告)日:2015-04-21

    申请号:US13394968

    申请日:2010-09-10

    CPC classification number: C07F13/005 B01J31/182 B01J31/2208 B01J2531/0216

    Abstract: The invention relates to a method for producing manganese complex compounds of the general formula (1), wherein M, X, L, z, Y and q are defined as in claim 1. The method is characterized by the following steps: a) reacting one or more bivalent metal salts with the ligand L in water as the solvent to form a coordination compound from the one or more bivalent metal salt and the ligand L, the one or more bivalent metal salts being selected from bivalent manganese salts and iron salts and at least one bivalent metal salt being a bivalent manganese salt, b) oxidizing the coordination compound of step a) with an oxidant while at the same time maintaining a pH of 11 to 14, to transform the metal M from the bivalent to the trivalent and/or tetravalent form, c) reducing the pH of the reaction mixture to a pH of 4 to 9 and removing any metal oxides or metal hydroxides of the metal M formed and d) adding, at a pH of 4 to 9, a salt of the formula MezYq, wherein Me represents an alkali metal ion, ammonium ion or an alkanol ammonium ion, and Y, z and q are defined as in formula (1).

    Abstract translation: 本发明涉及一种制备通式(1)的锰络合物的方法,其中M,X,L,Z,Y和q如权利要求1中所定义。该方法的特征在于以下步骤:a) 一种或多种二价金属盐与水中的配体L作为溶剂,以从一种或多种二价金属盐和配体L形成配位化合物,一种或多种二价金属盐选自二价锰盐和铁盐,以及 至少一种二价金属盐是二价锰盐,b)用氧化剂氧化步骤a)的配位化合物,同时保持pH为11至14,以将金属M从二价转化成三价和 /或四价形式,c)将反应混合物的pH降低至4至9的pH,并除去形成的金属M的任何金属氧化物或金属氢氧化物,以及d)在pH4至9的条件下,加入 式MezYq,其中Me表示碱金属离子,a 铵离子或烷醇铵离子,Y,Z和q如式(1)所定义。

    Meso-selective synthesis of ansa-metallocenes

    公开(公告)号:US07635783B2

    公开(公告)日:2009-12-22

    申请号:US10583574

    申请日:2004-12-15

    Abstract: The present invention relates to a process for the meso-selective preparation of ansa-metallocene complexes of the formula (I), which comprises reacting a ligand starting compound of the formula (II) with a transition metal compound of the formula III, where R1, R1 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R2, R2 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R3 is a bulky organic radical which has at least 3 carbon atoms, is bound to the oxygen atom via a nonaromatic carbon or silicon atom and may be substituted by halogen atoms or further organic radicals having from 1 to 20 carbon atoms and may also contain heteroatoms selected from the group consisting of Si, N, P, O and S, T, T′ are identical or different and are each a divalent organic group which has from 1 to 40 carbon atoms and together with the cyclopentadienyl ring forms at least one further saturated or unsaturated, substituted or unsubstituted ring system having a ring size of from 5 to 12 atoms, where T and T′ may contain the heteroatoms Si, Ge, N, P, As, Sb, O, S, Se or Te within the ring system fused to the cyclopentadienyl ring, A is a bridge consisting of a divalent atom or a divalent group, M1 is an element of group 3, 4, 5 or 6 of the Periodic Table of the Elements or the lanthanides, the radicals X are identical or different and are each an organic or inorganic radical which is able to be replaced by a cyclopentadienyl anion, x is a natural number from 1 to 4, M2 is an alkali metal, an alkaline earth metal or a magnesium monohalide fragment, p is 1 in the case of doubly positively charged metal ions or 2 in the case of singly positively charged metal ions or metal ion fragments, LB is an uncharged Lewis base ligand, and y is a natural number from 0 to 6, and also the subsequent reaction of these complexes to form ansa-metallocenes of the formula (IV), the use of transition metal compounds of the formula (III) for preparing metallocenes and also transition metal compounds of the formula (III), ansa-metallocene complexes of the formula (I) and the use of these as constituents of catalyst systems for the polymerization of olefines.

    Method For Producing 3,7-Diaza-bicyclo[3.3.1]nonane metal complexes
    10.
    发明申请
    Method For Producing 3,7-Diaza-bicyclo[3.3.1]nonane metal complexes 有权
    制备3,7-二氮杂双环[3.3.1]壬烷金属络合物的方法

    公开(公告)号:US20140114073A1

    公开(公告)日:2014-04-24

    申请号:US13877567

    申请日:2011-10-06

    CPC classification number: C07F15/02 C07F13/00 C07F13/005 C07F15/025

    Abstract: The invention relates to a method for producing metal complexes of formula (2) [MaLxXn]Ym (2), where M is a metal from the group consisting of Mn(II), Mn(III), Mn(IV), Fe(II), Fe(III) or Fe(IV), X is a coordinating compound selected from mono-, bi- or tri-charged anions or neutral molecules which can coordinate to a metal in mono-, bi- or tri-dentate form, Y represents a non-coordinating counter-ion which ensures charge equalization of the complex, L represents a ligand of formula (1) or the protonized or de-protonized form thereof, and a, x, n, m, R, R1, R2, R3 and z have the meanings described in claim 1. Said method is characterized in that the reaction of one or more ligands of formula (1) with an iron salt or manganese salt is carried out in an acetone/water mixture in a temperature range from 0 to 50° C. and for this purpose a solution or a suspension of the one or more ligands of formula (1) in acetone is brought in contact with an aqueous metal salt solution of the iron salt or manganese salt in the temperature range in which the reaction takes place.

    Abstract translation: 本发明涉及一种制备式(2)[MaLxXn] Ym(2)的金属配合物的方法,其中M是由Mn(II),Mn(III),Mn(IV),Fe( II),Fe(III)或Fe(IV),X是选自单,双或三电荷阴离子或中性分子的配位化合物,其可以以单,双或三齿形式与金属配位 ,Y表示非配位抗衡离子,其确保络合物的电荷均衡,L表示式(1)的配体或其质子化或去质子化形式,和a,x,n,m,R,R 1, R2,R3和z具有权利要求1所述的含义。所述方法的特征在于,式(1)的一种或多种配体与铁盐或锰盐的反应在丙酮/水混合物中在温度 范围为0至50℃,为此目的,将式(1)的一种或多种配体在丙酮中的溶液或悬浮液与铁盐水溶液的金属盐溶液接触 r锰盐在发生反应的温度范围内。

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