4,4-dichloro-3-oxo-butyric acid | 58657-58-2

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: 4,4-dichloro-3-oxo-butyric acid
• 英文别名: 4,4-Dichlor-3-oxo-butansaeure；Dichloroacetoacetic acid；4,4-dichloro-3-oxobutanoic acid
• CAS: 58657-58-2
• 化学式: C₄H₄Cl₂O₃
• 分子量: 170.98
• InChiKey: AYIXBWGVAXLWHS-UHFFFAOYSA-N

物化性质

• 沸点：
  289.4±30.0 °C(Predicted)
• 密度：
  1.562±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  9
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  54.4
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  4,4-dichloro-3-oxo-butyric acid 生成 1,1-二氯丙酮
  参考文献：
  名称：

  Herstellung von Dichloroacetylketen-diäthylacetal aus Dichloroketen und Keten-diäthylacetal und seine Umwandlung in weitere Produkte

  摘要：

  DOI：

  10.1055/s-1975-23914
• 作为产物：
  描述：

  1,1-dichloro-4,4-diethoxy-but-3-en-2-one 在 盐酸 作用下， 生成 4,4-dichloro-3-oxo-butyric acid
  参考文献：
  名称：

  Herstellung von Dichloroacetylketen-diäthylacetal aus Dichloroketen und Keten-diäthylacetal und seine Umwandlung in weitere Produkte

  摘要：

  DOI：

  10.1055/s-1975-23914

文献信息

• [EN] PREPARATION OF SURFACTANTS VIA CROSS-METATHESIS<br/>[FR] PRÉPARATION DE TENSIOACTIFS PAR MÉTATHÈSE CROISÉE
  申请人：MATERIA INC

  公开号：WO2015126462A1

  公开（公告）日：2015-08-27

  The present invention relates to compositions comprising 2-phenyl linear alkene benzenes or 2-phenyl linear alkene benzene sulfonates or 2-phenyl linear alkylbenzenes or 2-phenyl linear alkylbenzene sulfonates; where the benzene ring is optionally substituted with one or more groups designated R *, where R * is defined herein and to methods for making the same. This invention also relates to compositions, methods of making, use of, and articles of manufacuture comprising 2-ethoxylated hydroxymethylphenyl linear alkyl benzenes or 2-propoxylated hydroxymethylphenyl linear alkyl benzenes.

  本发明涉及包含2-苯基线性烯烃苯或2-苯基线性烯烃苯磺酸盐或2-苯基线性烷基苯或2-苯基线性烷基苯磺酸盐的组合物；其中苯环可以选择性地被一个或多个被指定为R*的基团取代，其中R*在此处被定义，并且涉及制备这些组合物的方法。本发明还涉及包含2-乙氧基羟甲基苯基线性烷基苯或2-丙氧基羟甲基苯基线性烷基苯的组合物、制备方法、使用方法和制造物品。
• [EN] USE OF SOLUBLE METAL SALTS IN METATHESIS REACTIONS<br/>[FR] UTILISATION DE SELS MÉTALLIQUES SOLUBLES DANS DES RÉACTIONS DE MÉTATHÈSE
  申请人：MATERIA INC

  公开号：WO2014152309A1

  公开（公告）日：2014-09-25

  The present invention describes the use of soluble metal salts to reduce impurities and metathesis catalysts poisons from olefinic feedstocks to improve olefin metathesis efficiency. The soluble metal salts were added to the olefinic feedstocks to prevent peroxides and catalyst poisons from inhibiting the metathesis catalyst. The soluble metal salts remain in the olefinic feedstocks and are used without further purification in the olefin metathesis reactions. The key to this invention is the soluble metal salt compounds do not inhibit the olefin metathesis catalysts but unexpectedly increase olefin metathesis catalyst efficiency while prior art heterogeneous metal complexes sequester the olefin metathesis catalyst, preventing olefin metathesis.

  本发明描述了利用可溶性金属盐来减少烯烃原料中的杂质和醚交换催化剂毒物，以提高烯烃醚交换效率。可溶性金属盐被添加到烯烃原料中，以防止过氧化物和催化剂毒物抑制醚交换催化剂。这些可溶性金属盐留在烯烃原料中，在烯烃醚交换反应中无需进一步纯化即可使用。这项发明的关键在于可溶性金属盐化合物不会抑制烯烃醚交换催化剂，而是意外地提高了烯烃醚交换催化剂的效率，而传统的异质金属络合物会固定烯烃醚交换催化剂，从而阻止烯烃醚交换。
• CROSS METATHESIS OF POLY-BRANCHED POLY-OLEFINS
  申请人：MATERIA INC.

  公开号：US20160107980A1

  公开（公告）日：2016-04-21

  This invention describes processes to make products by cross metathesis of functionalized or non-functionalized olefins with poly-branched poly-olefins such as terpenes (e.g., farnesene(s), α-farnesene, β-farnesene, β-myrcene, etc.) and compositions made by such methods. More particularly, the present invention relates to methods of making (i) cross metathesis products by a cross metathesis reaction between at least one hydrovinylated olefinic substrate and at least one hydrovinylated cross metathesis substrate in the presence of at least one olefin metathesis catalyst; (ii) cross metathesis products by a cross metathesis reaction between at least one hydrovinylated olefinic substrate and at least one cross metathesis substrate in the presence of at least one olefin metathesis catalyst; and (iii) cross metathesis products by a cross metathesis reaction between at least one olefinic substrate and at least one hydrovinylated cross metathesis substrate in the presence of at least one olefin metathesis catalyst; as well as compositions made by such methods.

  该发明描述了通过功能化或非功能化烯烃与多支链聚烯烃（如萜烯（例如，香叶烯，α-香叶烯，β-香叶烯，β-肉豆蔻烯等））进行交叉甲醇酯化制备产品的过程，以及通过这些方法制备的组合物。更具体地，本发明涉及以下方法：（i）通过至少一种烯烃基底和至少一种交叉甲醇酯基底在至少一种烯烃甲醇酯催化剂存在下进行交叉甲醇酯化反应制备交叉甲醇酯化产品；（ii）通过至少一种烯烃基底和至少一种交叉甲醇酯基底在至少一种烯烃甲醇酯催化剂存在下进行交叉甲醇酯化反应制备交叉甲醇酯化产品；（iii）通过至少一种烯烃基底和至少一种烯烃甲醇酯基底在至少一种烯烃甲醇酯催化剂存在下进行交叉甲醇酯化反应制备交叉甲醇酯化产品，以及通过这些方法制备的组合物。
• Simple apparatus for producing chlorine dioxide gas
  申请人：Yang Seung-Hee

  公开号：US20050224750A1

  公开（公告）日：2005-10-13

  The present invention relates to a simple apparatus for producing chlorine dioxide gas, and more specifically, a simple apparatus for producing chlorine dioxide gas in which a sand or silica gel layer, a chlorine dioxide producing layer and, if necessary, a coarse sand layer and a silica gel or zeolite layer sequentially fill the bottom of a tube, a number of solution-absorption holes are formed at the bottom of the tube, and a number of ClO 2 outlets are formed at the top of the tube. According to the apparatus of the invention, it is possible to instantly produce a small amount of chlorine dioxide in simple and safe manner or possible to safely preserve or provide a small amount of chlorine dioxide for a long time.

  本发明涉及一种简单的氯二氧化气体生产装置，更具体地说，涉及一种简单的氯二氧化气体生产装置，其中沙子或硅胶层、氯二氧化物生产层，如有必要，顺序填充在管子底部，底部形成若干溶液吸收孔，管子顶部形成若干ClO2出口。根据本发明的装置，可以简单、安全地立即生产少量氯二氧化物，或者可以安全地保存或提供少量氯二氧化物长时间使用。
• Purification of carboxylic acids by complexation with selective solvents
  申请人：Wytcherley Wright Randi

  公开号：US20050228195A1

  公开（公告）日：2005-10-13

  A method and apparatus for purifying carboxylic acids is disclosed. A mixture containing crude carboxylic acid is contacted with a selective crystallization solvent to form a slurry of a salt complex of the carboxylic acid and the selective crystallization solvent. The salt complex is recovered and optionally processed to recover the free carboxylic acid. The method and apparatus of the invention is particularly suitable for purifying aromatic dicarboxylic acids such as terephthalic acid. The present invention also reduces contamination by carboxybenaldehyde isomers in crude phthalic acids by oxidizing the carboxybenzaldehyde to the corresponding phthalic acid.

  本发明公开了一种净化羧酸的方法和装置。将含有粗羧酸的混合物与选择性结晶溶剂接触，形成羧酸和选择性结晶溶剂的盐复合物浆。回收盐复合物，可选择性地处理以回收游离的羧酸。该发明的方法和装置特别适用于净化芳香族二羧酸，如苯二甲酸。本发明还通过将羧基苯甲醛氧化为相应的邻苯二甲酸，减少了粗邻苯二甲酸中羧基苯甲醛同分异构体的污染。