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19 条记录 (耗时 0.024 秒)

    Process for the preparation of carbonyl compounds by cleavage of hydroxycarboxylic acids
    1.
    发明授权
    Process for the preparation of carbonyl compounds by cleavage of hydroxycarboxylic acids 失效
    通过羟基羧酸的切割制备羰基化合物的方法

    公开(公告)号：US06506942B2

    公开(公告)日：2003-01-14

    申请号：US09976988

    申请日：2001-10-12

    申请人： Klas Sorger ,  Hermann Petersen ,  Juergen Stohrer

    发明人： Klas Sorger ,  Hermann Petersen ,  Juergen Stohrer

    IPC分类号： C07C4500

    CPC分类号： C07B41/06 ,  C07C45/512

    摘要： The invention relates to a process for the preparation of a carbonyl compound of the general formula (1) R1R2C═O  (1), in which a &bgr;-hydroxycarboxylic acid or its salt of the general formula (2) R1R2C(OH)—CR3R4—COOM  (2) is cleaved in the presence of a Brönstedt base which is selected from hydroxides, alkanolates, oxides, amides and hydrides of the alkali metals and alkaline earth metals, and in the presence of a hydroxyl-free solvent, R1, R2, R3, R4 and M having the meanings from claim 1.

    摘要翻译： 本发明涉及一种制备通式（1）的羰基化合物的方法，其中在布朗斯台德碱存在下将β-羟基羧酸或其通式（2）的盐切割，其选自 碱金属和碱土金属的氢氧化物，链烷醇化物，氧化物，酰胺和氢化物，以及在没有权利要求1的含义的无羟基溶剂R1，R2，R3，R4和M的存在下。

    Process for the oxidation of alcohols to aldehydes and ketones in the presence of nitroxyl compounds as catalysts
    2.
    发明授权
    Process for the oxidation of alcohols to aldehydes and ketones in the presence of nitroxyl compounds as catalysts 有权
    在硝酰基化合物作为催化剂存在下将醇氧化成醛和酮的方法

    公开(公告)号：US06750371B2

    公开(公告)日：2004-06-15

    申请号：US10264682

    申请日：2002-10-04

    申请人： Elke Fritz-Langhals ,  Juergen Stohrer ,  Hermann Petersen

    发明人： Elke Fritz-Langhals ,  Juergen Stohrer ,  Hermann Petersen

    IPC分类号： C07C4529

    CPC分类号： C07D209/48 ,  C07B41/06 ,  C07C45/29 ,  C07C45/30 ,  C07F7/1892

    摘要： An alcohol is oxidized to an aldehyde or a ketone in the presence of a nitroxyl compound as catalyst, wherein the alcohol to be oxidized is contained in an organic liquid phase, and is reacted in the presence of a nitroxyl compound with an aqueous phase comprising an oxidant. The reaction is carried out continuously at a contact time of the phases of from 0.1 s to a maximum of 15 minutes, with intensive mixing of the phases. The process produces high yields with low quantities of other oxidation byproducts.

    摘要翻译： 在硝酰基化合物作为催化剂存在下，将醇氧化成醛或酮，其中待氧化的醇被包含在有机液相中，并且在硝酰基化合物存在下与含有 氧化剂。 反应在0.1秒至最多15分钟的接触时间内连续进行，同时相密集混合。 该方法产生高产率，少量的其它氧化副产物。

    PROCESS FOR THE SYNTHESIS OF 1,3-BIS(AMINOALKYL)DISILOXANES
    6.
    发明申请
    PROCESS FOR THE SYNTHESIS OF 1,3-BIS(AMINOALKYL)DISILOXANES 审中-公开
    合成1,3-BIS（氨基烷基）甲苯磺酸的方法

    公开(公告)号：US20120004436A1

    公开(公告)日：2012-01-05

    申请号：US13256740

    申请日：2010-03-11

    申请人： Elke Fritz-Langhals ,  Juergen Stohrer

    发明人： Elke Fritz-Langhals ,  Juergen Stohrer

    IPC分类号： C07F7/10

    CPC分类号： C07F7/0889

    摘要： The invention provides a process for the synthesis of bis(aminoalkyl)disiloxanes of the general formula I by reaction of the carbamatosilanes of the general formula Ma or of the carbamatodisiloxanes of the general formula Mb or of mixtures thereof in the presence of water, where R1 is a divalent hydrocarbon radical having 1 to 100 C atoms, it being possible for the carbon chain to be interrupted by non-adjacent oxygens, sulphur atoms, —NR6—(CO)— or —NHCONH- groups and for the hydrogens in the divalent hydrocarbon radical individually to be substituted by F, Cl, NR7R8 or OR9 groups, and R2, R3, R4, R5, R6, R7, R8 and R9 are hydrocarbon radicals having 1 to 100 C atoms.

    摘要翻译： 本发明提供了通过在通式M的氨基甲酰硅烷或通式Mb的氨基甲酰硅氧烷或其混合物在水存在下反应来合成通式I的双（氨基烷基）二硅氧烷的方法，其中R1 是具有1至100个C原子的二价烃基，碳链可能被非相邻的氧，硫原子，-NR6-（CO） - 或-NHCONH-基团和二价 分别被F，Cl，NR7R8或OR9基团取代的烃基，R2，R3，R4，R5，R6，R7，R8和R9是具有1至100个C原子的烃基。

    Process for cleaving thiazolidines
    7.
    发明申请
    Process for cleaving thiazolidines 审中-公开
    切割噻唑烷的方法

    公开(公告)号：US20060030732A1

    公开(公告)日：2006-02-09

    申请号：US11190232

    申请日：2005-07-27

    申请人： Dieter Heldmann ,  Juergen Stohrer

    发明人： Dieter Heldmann ,  Juergen Stohrer

    IPC分类号： C07C319/12

    CPC分类号： C07C319/06 ,  C07C319/02 ,  Y02P20/127 ,  C07C323/58

    摘要： Preparation of α-substituted cysteine derivatives takes place by acidic hydrolysis of thiazolidines, wherein the hydrolysis is effected in the presence of a further phase comprising an organic solvent and a vapor comprising water, acid, organic solvent and aldehyde is removed from the reaction mixture, or a vapor comprising water, acid and aldehyde is removed from the reaction mixture and the vapor or its condensate is subsequently contacted with a phase comprising an organic solvent. The process requires less hydrolysis time and allows for recycle and/or recovery of acid and by product aldehyde.

    摘要翻译： α-取代的半胱氨酸衍生物的制备通过噻唑烷的酸性水解进行，其中在存在包含有机溶剂的另外的相的情况下进行水解，并且从反应混合物中除去包含水，酸，有机溶剂和醛的蒸气， 或者将包含水，酸和醛的蒸气从反应混合物中除去，然后蒸气或其冷凝物与包含有机溶剂的相接触。 该方法需要更少的水解时间并且允许酸和产物醛的再循环和/或回收。

    Norbornyl-substituted silanes and the use thereof
    8.
    发明授权
    Norbornyl-substituted silanes and the use thereof 失效
    降冰片基取代的硅烷及其用途

    公开(公告)号：US06881855B2

    公开(公告)日：2005-04-19

    申请号：US10255515

    申请日：2002-09-26

    申请人： Dieter Heldmann ,  Oliver Schaefer ,  Juergen Stohrer

    发明人： Dieter Heldmann ,  Oliver Schaefer ,  Juergen Stohrer

    IPC分类号： C07B51/00 ,  C07F7/08 ,  C07F7/12 ,  C07F7/18 ,  C07F7/10

    CPC分类号： C07F7/12 ,  C07B51/00 ,  C07F7/0834 ,  C07F7/1804

    摘要： Silanes of the formula Ra1R4-a-xSiLx  (I) where each R is identical or different and is a monovalent, optionally substituted hydrocarbon radical which is free of aliphatic carbon—carbon multiple bonds and has from 1 to 18 carbon atoms per radical, R1 is an optionally substituted 2-norbornyl radical, L is a leaving group, a is 1, 2 or 3 and x is 1 or 2, with the proviso that the sum of a+x≦4, are useful for protecting functional groups of organic compounds (2) which have at least one functional group having an active hydrogen atom, preferably as a hydroxyl group —OH, a thiol groups —SH, an amine group —NH— or —NH2, a carboxyl group —COOH, or an amide group —CONH— or —CONH2.

    摘要翻译： 公式的硅烷<？in-line-formula description =“In-line Formulas”end =“lead”？> R＆lt; 1＆lt; 1＆gt; R 4-ax （I）<？in-line-formula description =“In-line formula”end =“tail”？>其中每个R相同或不同，为一价， 任选取代的烃基，其不含脂族碳 - 碳多重键，并且每个基团具有1至18个碳原子，R 1是任选取代的2-降冰片基，L是离去基团， 是1,2或3，x是1或2，条件是a + x <= 4的总和可用于保护具有至少一个具有活性氢的官能团的有机化合物（2）的官能团 原子，优选羟基-OH，硫醇基-SH，胺基-NH-或-NH 2，羧基-COOH或酰胺基-CONH-或-CONH 2 。

    Removal of free aldehydes
    9.
    发明授权
    Removal of free aldehydes 失效
    去除游离醛

    公开(公告)号：US06753383B2

    公开(公告)日：2004-06-22

    申请号：US10011169

    申请日：2001-12-06

    申请人： Oliver Schaefer ,  Juergen Stohrer ,  Wolfgang Doering

    发明人： Oliver Schaefer ,  Juergen Stohrer ,  Wolfgang Doering

    IPC分类号： C08J320

    CPC分类号： C08K5/46 ,  C08K5/3725

    摘要： A process for reducing free aldehydes in dispersions, suspensions, emulsions and solutions which comprises including therein thioamine compound of the formula IV and optionally a thioamine of the formula III: where R1 is a C1-5 alkyl radical, an aryl radical or hydrogen, R2 is —(COO)a —E or —(CONH)a—E where a is 0 or 1 and E, R3, R4, and R5 are independently R4 and R5 together containing at least one carbon atom, and n being 0 or 1.

    摘要翻译： 一种在分散体，悬浮液，乳液和溶液中还原游离醛的方法，其包括其中包含式IV的硫代胺化合物和任选的式III的硫胺：其中R 1是C 1-5烷基，芳基或氢，R 2 是 - （COO）a -E或 - （CONH）aE，其中a是0或1，E，R 3，R 4和R 5独立地是R 4和R 5一起含有至少一个碳原子，n是0或1。

    Polymerizable liquid-crystalline siloxanes
    10.
    发明授权
    Polymerizable liquid-crystalline siloxanes 失效
    可聚合液晶硅氧烷

    公开(公告)号：US5605649A

    公开(公告)日：1997-02-25

    申请号：US362390

    申请日：1994-12-22

    申请人： Juergen Stohrer ,  Willibald Lottner

    发明人： Juergen Stohrer ,  Willibald Lottner

    IPC分类号： G02F1/13 ,  C07F7/08 ,  C08F290/00 ,  C08F299/08 ,  C09K19/40 ,  C09K19/52 ,  G02F1/1335

    CPC分类号： C07F7/0847 ,  C09K19/406 ,  Y10T428/1036

    摘要： Polymerizable liquid-crystalline siloxanes of a defined composition which are distinguished by low viscosity and pronounced thermochromic properties. The liquid-crystalline siloxanes of the present invention are used for the production of membranes in the optical display of electromagnetic field, opto-electronics, information storage and in particular in the production of optical filters and reflectors.

    摘要翻译： 具有限定组成的可聚合液晶硅氧烷，其特征在于低粘度和明显的热变色性质。 本发明的液晶硅氧烷用于在电磁场，光电子学，信息存储的光学显示器中制造膜，特别是在制造光学滤波器和反射器中。