3,6-dibutyl-1,4-dioxane-2,5-dione | 4384-01-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二恶烷
• 英文名称: 3,6-dibutyl-1,4-dioxane-2,5-dione
• CAS: 4384-01-4
• 化学式: C₁₂H₂₀O₄
• 分子量: 228.288
• InChiKey: YZOWKVJDLDVRST-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  16
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  DL-Alpha-羟基己酸 在 水 作用下， 以 邻二甲苯 为溶剂， 反应 3.0h， 生成 3,6-dibutyl-1,4-dioxane-2,5-dione
  参考文献：
  名称：

  Process for Preparing Cyclic Esters and Cyclic Amides

  摘要：

  制备环酯或环酰胺的过程包括将羟基羧酸和/或氨基羧酸、其酯或盐与酸性沸石接触。羟基羧酸是2-或6-羟基羧酸，氨基羧酸是2-或6-氨基羧酸。沸石可以包括两个或三个相互连接且非平行的通道系统，其中一个通道系统包括10个或更多成员的环形通道，并且框架Si/X2比按NMR测量至少为24。X是Al或B。沸石可以包括三个相互连接且非平行的通道系统，其中至少两个通道系统包括10个或更多成员的环形通道，并且框架Si/X2比按NMR测量至少为6。该过程可在0.5至20巴的压力下进行。

  公开号：

  US20150376159A1

文献信息

• [EN] PROCESS FOR PREPARING CYCLIC ESTERS AND CYCLIC AMIDES<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ESTERS CYCLIQUES ET D'AMIDES CYCLIQUES
  申请人：TOTAL RES & TECHNOLOGY FELUY

  公开号：WO2014122294A1

  公开（公告）日：2014-08-14

  The invention relates to a process for preparing a cyclic ester or a cyclic amide, comprising the step of: contacting at least one hydroxycarboxylic acid and/or at least one amino-carboxylic acid; or an ester, or salt thereof; wherein said hydroxycarboxylic acid is a 2-hydroxycarboxylic acid,or a 6–hydroxycarboxylic acid; and wherein said amino carboxylic acid is a 2-amino-carboxylic acid or a 6-amino-carboxylic acid; with at least one acidic zeolite comprising: - two or three interconnected and non-parallel channel systems, wherein at least one of said channel systems comprises 10-or more-membered ring channels; and a framework Si/X2 ratio of at least 24 as measured by NMR; or - three interconnected and non-parallel channel systems, wherein at least two of said channel systems comprise 10-or more-membered ring channels; and a framework Si/X2 ratio of at least 6 as measured by NMR; wherein each X is Al or B, and wherein the process is performed at a pressure between 0.5 and 20 bar.

  该发明涉及一种制备环酯或环酰胺的过程，包括以下步骤：接触至少一种羟基羧酸和/或至少一种氨基羧酸；或其酯或盐；其中所述羟基羧酸是2-羟基羧酸或6-羟基羧酸；所述氨基羧酸是2-氨基羧酸或6-氨基羧酸；与至少一种含有酸性沸石的接触：- 两个或三个相互连接且非平行的通道系统，其中至少一个通道系统包括10个或更多环成员的环通道；并且通过NMR测量的框架Si/X2比至少为24；或- 三个相互连接且非平行的通道系统，其中至少两个通道系统包括10个或更多环成员的环通道；并且通过NMR测量的框架Si/X2比至少为6；其中每个X是Al或B，并且该过程在0.5至20巴的压力下进行。
• POLYURETHANES
  申请人：Ercole Francesca

  公开号：US20120252967A1

  公开（公告）日：2012-10-04

  The present invention relates to a polyurethane polymer comprising as part of its polymer backbone an α-oxy carbonyl moiety of general formula (I), where A and B represent the remainder of the polymer backbone and are the same or different, and R is an optionally substituted aliphatic hydrocarbon having three or more carbon atoms.

  本发明涉及一种聚氨酯聚合物，其聚合物主链中包含通式(I)的α-氧基羰基基团，其中A和B代表聚合物主链的其余部分，可以相同也可以不同，R是具有三个或三个以上碳原子的可选择取代的脂肪族碳氢化合物。
• Process for producing articles formed from polylactic acid and articles made therefrom
  申请人：W. L. Gore & Associates, Inc.

  公开号：US10150232B2

  公开（公告）日：2018-12-11

  PLA polymers that can be expanded into microporous articles having a node and fibril microstructure are provided. The fibrils contain PLA polymer chains oriented with the fibril axis. Additionally, the PLA polymers have an inherent viscosity greater than about 3.8 dL/g and a calculated molecular weight greater than about 150,000 g/mol. The PLA polymer article may be formed by bulk polymerization where the PLA bulk polymer is made into a preform that is subsequently expanded at temperatures above the glass transition temperature and below the melting point of the PLA polymer. In an alternate embodiment, a PLA polymer powder is lubricated, the lubricated polymer is subjected to pressure and compression to form a preform, and the preform is expanded to form a microporous article. Both the preform and the microporous article are formed at temperatures above the glass transition temperature and below the melting point of the PLA polymer.

  聚乳酸聚合物可扩展成具有节点和纤维微观结构的微孔制品。纤维包含与纤维轴线定向的聚乳酸聚合物链。此外，聚乳酸聚合物的固有粘度大于约 3.8 dL/g，计算分子量大于约 150,000 g/mol。聚乳酸聚合物制品可通过散装聚合形成，其中聚乳酸散装聚合物被制成预型件，随后在高于玻璃化温度和低于聚乳酸聚合物熔点的温度下膨胀。在另一个实施方案中，对聚乳酸聚合物粉末进行润滑，对润滑聚合物施加压力和压缩以形成预型件，然后对预型件进行膨胀以形成微孔制品。预型件和微孔制品都是在高于聚乳酸聚合物的玻璃化温度和低于其熔点的温度下形成的。
• Blaise, Bulletin de la Societe Chimique de France, 1904, vol. <3>31, p. 492
  作者：Blaise

  DOI：——

  日期：——
• PROCESS FOR PREPARING CYCLIC ESTERS AND CYCLIC AMIDES
  申请人：Total Research & Technology Feluy SA

  公开号：EP2941422A1

  公开（公告）日：2015-11-11