1,2-dimethyl-1,2,3,4-cyclobutanetetracarboxylic acid-1,3:2,4-dianhydride | 885049-97-8

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: 1,2-dimethyl-1,2,3,4-cyclobutanetetracarboxylic acid-1,3:2,4-dianhydride
• 英文别名: 1,2-Dimethyl-4,9-dioxatricyclo[4.4.0.02,7]decane-3,5,8,10-tetrone
• CAS: 885049-97-8
• 化学式: C₁₀H₈O₆
• 分子量: 224.17
• InChiKey: TXZMDMYDPCISRE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.5
• 重原子数：
  16
• 可旋转键数：
  0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  86.7
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  trans,trans,trans-1,2-dimethyl-1,2,3,4-cyclobutanetetracarboxylic acid 在 乙酸酐 作用下， 以 甲苯 为溶剂， 反应 5.0h， 以86.3%的产率得到1,2-dimethyl-1,2,3,4-cyclobutanetetracarboxylic acid-1,3:2,4-dianhydride
  参考文献：
  名称：

  CAGE-SHAPED CYCLOBUTANOIC DIANHYDRIDES AND PROCESS FOR PRODUCTION THEREOF

  摘要：

  公开号：

  EP1813592B1

文献信息

• Cage-shaped cyclobutanoic dianhydrides and process for production thereof
  申请人：Suzuki Hideo

  公开号：US20090012318A1

  公开（公告）日：2009-01-08

  A process which comprises reacting a 1,2,3,4-cyclobutanetetracarboxylic-1,2:3,4-dianhydride [1] with an alcohol [2] in the presence of an acid catalyst to obtain a compound [3], isomerizing the compound [3] with a base catalyst into a compound [4], reacting the compound [4] with an organic acid to obtain a compound [5], and reacting the compound [5] with a dehydrating agent to obtain a 1,2,3,4-cyclobutanetetracarboxylic-1,3:2,4-dianhydride: wherein R 1 and R 2 are each independently hydrogen, halogeno, alkyl of 1 to 10 carbon atoms, halogenated alkyl of 1 to 10 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, phenyl, or cyano; and R 3 is alkyl of 1 to 10 carbon atoms.
• POLYAMIC ACIDS, POLYIMIDES, AND PROCESSES FOR THE PRODUCTION THEREOF
  申请人：Suzuki Hideo

  公开号：US20100063243A1

  公开（公告）日：2010-03-11

  To provide polyamic acids and polyimides, which have high light transmittance and heat resistance such that their thermal decomposition temperatures are at least 300° C. and which are excellent in their solubility in solvents and have their processability improved. A polyamic acid comprising repeating units represented by the following formula (1), characterized in that at least 10 mol % of A has a structure represented by the formula (2), or a polyimide obtainable by cyclodehydration of such a polyamic acid. wherein A is a tetravalent organic group, B is a bivalent organic group, and n is a positive integer; and wherein each of R 1 and R 2 which are independent of each other, is a hydrogen atom, a halogen atom, a C 1-10 alkyl group, a C 1-10 halogenated alkyl group, a C 3-8 cycloalkyl group, a phenyl group or a cyano group, and a1 to a4 represent binding sites in the formula (1), provided that a1 and a3 are not simultaneously bonded to the carboxyl groups, and a2 and a4 are not simultaneously bonded to the carboxyl groups.
• US7872148B2
  申请人：——

  公开号：US7872148B2

  公开（公告）日：2011-01-18