diethylene glycol dioctyl ether

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: diethylene glycol dioctyl ether
• 英文别名: 1-[2-(2-Octoxyethoxy)ethoxy]octane
• 化学式: C₂₀H₄₂O₃
• 分子量: 330.552
• InChiKey: MMVAEMFNVQIXIP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.6
• 重原子数：
  23
• 可旋转键数：
  20
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  27.7
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  辛醇 、 二氯乙醚 在 二环己烷并-18-冠醚-6 、 氢氧化钾 作用下， 以 水 为溶剂， 生成 diethylene glycol dioctyl ether
  参考文献：
  名称：

  Tsarenko, N. A.; Yakshin, V. V.; Zhukova, N. G., Doklady Chemistry, 1981, vol. 258, p. 215 - 217

  摘要：

  DOI：

文献信息

• Process for the preparation of cyclic esters and method for purification of the same
  申请人：——

  公开号：US20030191326A1

  公开（公告）日：2003-10-09

  The present invention provides a process for production of a cyclic ester by depolymerization of an aliphatic polyester. In the process, a mixture containing the aliphatic polyester and a specific polyalkylene glycol ether, which has a boiling point of 230-450° C. and a molecular weight of 150-450, is heated under normal or reduced pressure to a temperature at which depolymerization of the aliphatic polyester takes place. Then, a substantially homogeneous solution phase, consisting of the melt phase of the aliphatic polyester and the liquid phase of the polyalkylene glycol ether, is formed. Heating of the solution phase is continued to form the cyclic ester by depolymerization and distil out the cyclic ester together with the polyalkylene glycol ether, and then the cyclic ester is recovered from the distillate. The present invention also provides a process for purification of a crude cyclic ester by use of the specific polyalkylene glycol ether described above.

  本发明提供了一种通过脂肪族聚酯的降解来生产环酯的方法。在该过程中，将含有脂肪族聚酯和具有沸点在230-450°C和分子量在150-450之间的特定聚烷基乙二醇醚的混合物，在常压或减压下加热至脂肪族聚酯发生降解的温度。然后，形成由脂肪族聚酯的熔融相和聚烷基乙二醇醚的液相组成的基本均相溶液相。继续加热溶液相以通过降解形成环酯并与聚烷基乙二醇醚一起蒸馏出环酯，然后从馏出物中回收环酯。本发明还提供了一种利用上述特定聚烷基乙二醇醚对粗环酯进行纯化的方法。
• METHOD FOR SYNTHESIZING RARE EARTH METAL EXTRACTANT
  申请人：Sakaki Kazuaki

  公开号：US20130102806A1

  公开（公告）日：2013-04-25

  A rare earth metal extractant containing, as the extractant component, dialkyldiglycol amide acid which is excellent in breaking down light rare earth elements is reacted in diglycolic acid (X mol) and an esterification agent (Y mol) at a reaction temperature of 70° C. or more and for a reaction time of one hour or more such that the mol ratio of Y/X is 2.5 or more, and is subjected to vacuum concentration. Subsequently, a reaction intermediate product is obtained by removing unreacted products and reaction residue, and an aprotic polar solvent is added as the reaction solvent. Then, the reaction intermediate product is reacted with dialkyl amine (Z mol) such that the mol ratio of Z/X is 0.9 or more and the aprotic polar solvent is removed. As a consequence, a rare earth metal extractant is efficiently synthesized at a low cost and at a high yield without having to use expensive diglycolic acid anhydride and harmful dichloromethane.

  一种稀土金属萃取剂包含二烷基二甘醇酰胺酸作为萃取组分，该酸在分解轻稀土元素方面表现出色，反应温度为70°C或更高，反应时间为1小时或更长，与二甘醇酸（X摩尔）和酯化剂（Y摩尔）反应，使得Y/X的摩尔比为2.5或更高，并经真空浓缩处理。随后，通过去除未反应的产物和反应残留物获得反应中间产物，并添加无水极性溶剂作为反应溶剂。然后，将反应中间产物与二烷基胺（Z摩尔）反应，使得Z/X的摩尔比为0.9或更高，并去除无水极性溶剂。因此，可以在低成本和高收率的情况下高效合成稀土金属萃取剂，而无需使用昂贵的二甘醇酸酐和有害的二氯甲烷。
• SYNTHESIS OF RARE EARTH METAL EXTRACTANT
  申请人：Sakaki Kazuaki

  公开号：US20120004459A1

  公开（公告）日：2012-01-05

  A rare earth metal extractant in the form of a dialkyl diglycol amic acid is synthesized by reacting diglycolic anhydride with a dialkylamine in an aprotic polar solvent, with a molar ratio of dialkylamine to diglycolic anhydride being at least 1.0, and removing the aprotic polar solvent.

  一种稀土金属萃取剂，以二烷基二乙二醇酰胺酸的形式合成，通过在无水极性溶剂中将二乙二醇酸酐与二烷基胺反应合成，其中二烷基胺与二乙二醇酸酐的摩尔比至少为1.0，并去除无水极性溶剂。
• METHOD FOR PRODUCING a-HYDROXYCARBOXYLIC ACID DIMERIC CYCLIC ESTER
  申请人：Kureha Corporation

  公开号：US20190330175A1

  公开（公告）日：2019-10-31

  Provided is a method for producing a high purity α-hydroxycarboxylic acid dimeric cyclic ester while heavy-component formation from an α-hydroxycarboxylic acid oligomer is suppressed. An α-hydroxycarboxylic acid dimeric cyclic ester is obtained by performing a depolymerization reaction in the coexistence of an inorganic acid or an inorganic acid salt or a mixture thereof; and an organophosphorus compound.

  提供了一种制备高纯度α-羟基羧酸二聚环酯的方法，同时抑制从α-羟基羧酸寡聚体中形成重组分。通过在无机酸或无机酸盐或二者混合物的共存下进行解聚反应，并加入有机磷化合物，可以得到α-羟基羧酸二聚环酯。
• METHOD FOR PRODUCING CYCLIC ESTER
  申请人：Kureha Corporation

  公开号：US20200392102A1

  公开（公告）日：2020-12-17

  In a method for producing a cyclic ester according to an embodiment of the present invention, a mixture (I) containing an aliphatic polyester, a specific polyalkylene glycol diether, and a sulfonic acid compound as a thermal stabilizer is prepared and heated in predetermined conditions to obtain a mixture (II) in a state of solution. Furthermore, heating of the mixture (II) is continued to distill, together with the polyalkylene glycol diether, a cyclic ester formed by the depolymerization reaction, and thus a distillate (III) is obtained. The cyclic ester is recovered from the distillate (III). At this time, a specific solubilizing agent is added to at least one of the mixture (I) or (II). In this production method, the sulfonic acid compound as the thermal stabilizer is contained in the mixtures (I) and (II) and the distillate (III).

  根据本发明实施例的一种制备环酯的方法中，制备含有脂肪族聚酯、特定聚烷基醚二醇和磺酸化合物作为热稳定剂的混合物(I)，并在预定条件下加热，得到处于溶液状态的混合物(II)。此外，继续加热混合物(II)以蒸馏，与聚烷基醚二醇一起蒸馏出由去聚合反应形成的环酯，从而得到馏出物(III)。从馏出物(III)中回收环酯。此时，在混合物(I)或(II)中至少添加一种特定的溶解剂。在此生产方法中，磺酸化合物作为热稳定剂被包含在混合物(I)、(II)和馏出物(III)中。