2,3-dimethyl-terephthalic acid monomethyl ester | 109844-88-4

• 物质功能分类: 有机原料 - 羧酸类化合物及衍生物
• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 2,3-dimethyl-terephthalic acid monomethyl ester
• 英文别名: 2,3-Dimethyl-terephthalsaeure-monomethylester；4-Methoxycarbonyl-2,3-dimethylbenzoic acid
• CAS: 109844-88-4
• 化学式: C₁₁H₁₂O₄
• 分子量: 208.214
• InChiKey: RKBUNJBFLFWMPE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  63.6
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  1,4-二溴-2,3-二甲基苯 在 吡啶 、 盐酸 、 氢氧化钾 作用下， 生成 2,3-dimethyl-terephthalic acid monomethyl ester
  参考文献：
  名称：

  Extensive sterile abscess in an invasive fibrous thyroiditis (Riedel’s thyroiditis) caused by an occlusive vasculitis

  摘要：

  Riedel's thyroiditis is a rare disease determined by an invasive fibrosclerotic transformation of the thyroid gland. It may be one manifestation of multifocal fibrosis with still unknown etiology. Because it mimics carcinoma, a biopsy must be performed to get the correct diagnosis. The condition is self-limiting when confined to the neck. Prognosis depends on the extent of extracervical fibrosclerosis. We present a patient with a huge cervical and mediastinal, unilateral thyroid mass expanding to the aortic curve, which led to tracheal deviation and compression with symptoms of strider and dyspnea. These symptoms continued under a course of high-dose steroids; thus an operation was necessary to relieve the airway obstruction and limit inflammation. Intraoperative and pathological findings showed an inflammatory infiltration of the adjacent neck muscles and a sterile abscess caused by an occlusive vasculitis. Therefore, hemithyroidectomy had to be performed instead of a local limited resection. (C)2001, Editrice Kurtis.

  DOI：

  10.1007/bf03343824

文献信息

• [EN] POLYCARBONATE ALLOY, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF<br/>[FR] ALLIAGE DE POLYCARBONATE, SON PROCÉDÉ DE PRÉPARATION ET SON APPLICATION<br/>[ZH] 一种聚碳酸酯合金及其制备方法和一种应用
  申请人：KINGFA SCIENCE & TECHNOLOGY CO

  公开号：WO2020143448A1

  公开（公告）日：2020-07-16

  本发明提供了一种聚碳酸酯合金，按重量份计，包括以下组分：聚碳酸酯50-80份；结晶性聚酯1-50份；马来酸酐聚合物0.01-4份；磷酸金属盐0.01-4份。本发明的聚碳酸酯合金，具有合金稳定性好、结晶性聚酯在合金中连续、分布均匀的优点。
• [EN] WALL-THINNING FLAME-RETARDANT POLYCARBONATE/POLYETHYLENE TEREPHTHALATE ALLOY AND PREPARATION METHOD THEREFOR<br/>[FR] ALLIAGE DE POLYCARBONATE/POLY(TÉRÉPHTALATE D'ÉTHYLÈNE) RETARDATEUR DE FLAMME ET AMINCISSEUR DE PAROI ET SON PROCÉDÉ DE PRÉPARATION<br/>[ZH] 一种薄壁阻燃聚碳酸酯/聚对苯二甲酸乙二醇酯合金及其制备方法
  申请人：KINGFA SCIENCE & TECHNOLOGY CO

  公开号：WO2021052088A1

  公开（公告）日：2021-03-25

  本发明提供了一种薄壁阻燃聚碳酸酯/聚对苯二甲酸乙二醇酯合金，按重量份计，包括以下组分：聚碳酸酯50-80份；聚对苯二甲酸乙二醇酯10-50份；阻燃剂0.1-15份；所述的聚碳酸酯的重均分子量大于24000，分子量分布指数PDI小于2.7、熔融指数稳定性评价MI％<10％。本发明通过控制聚碳酸酯的重均分子量大于、分子量分布指数PDI、熔融指数稳定性评价MI％，相比于普通的聚碳酸酯，具有上述参数的聚碳酸酯与聚对苯二甲酸乙二醇酯具有更好的相容性，制备得到的合金具有更好的薄壁、阻燃效果。
• Aerobic Oxidative Esterification of Sugar-Derived 1,4-Disubstituted Benzene for Direct Synthesis of Dimethylterephthalate
  申请人：ExxonMobil Chemical Patents Inc.

  公开号：US20160115113A1

  公开（公告）日：2016-04-28

  This invention relates to a dimethylterephthalate production process comprising reacting substituted furan with ethylene under cycloaddition reaction conditions and in the presence of a cycloaddition catalyst to produce a bicyclic ether, dehydrating the bicyclic ether to produce a substituted phenyl, dissolving said substituted phenyl in methanol, and oxidizing and esterifying the substituted phenyl in the presence of an oxidative esterification catalyst to form dimethylterephthalate. Importantly, the process does not include oxidizing the substituted phenyl to form terephthalic acid.
• US3966820A
  申请人：——

  公开号：US3966820A

  公开（公告）日：1976-06-29
• US3975540A
  申请人：——

  公开号：US3975540A

  公开（公告）日：1976-08-17