dimethyl 2,3-dimethylterephthalate | 14186-58-4

• 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: dimethyl 2,3-dimethylterephthalate
• 英文别名: 2,3-dimethyl-terephthalic acid dimethyl ester；2,3-Dimethyl-terephthalsaeure-dimethylester；2,3-Dimethyl-terephthalsaeuredimethylester；2,3-Dimethylterephthalsaeure-dimethylester；Dimethyl-2,3-dimethylterephthalat；Dimethyl 2,3-dimethylbenzene-1,4-dicarboxylate
• CAS: 14186-58-4
• 化学式: C₁₂H₁₄O₄
• 分子量: 222.241
• InChiKey: AJGNHTAXGFNFPP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  16
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 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：

  1,4-二溴-2,3-二甲基苯 在 吡啶 、 氢氧化钾 、 硫酸 作用下， 生成 dimethyl 2,3-dimethylterephthalate
  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

• A conjunctive diiodoheptaene for the synthesis of C2-symmetric carotenoids
  作者：Noelia Fontán、Belén Vaz、Rosana Álvarez、Ángel R. de Lera

  DOI：10.1039/c3cc38676g

  日期：——

  (2E,4E,6E,8E,10E,12E,14E)-2,15-Diiodo-6,11-dimethylhexadeca-2,4,6,8,10,12,14-heptaene, prepared by homometathesis, has been used in palladium-catalyzed Suzuki and Stille cross-coupling reactions with the appropriate partners to construct the C2-symmetric carotenoids β,β-carotene, lycopene, synechoxanthin and 4,4′-diapo-ψ,ψ-carotene-4,4′-dial.

  (2E,4E,6E,8E,10E,12E,14E)-2,15-二碘-6,11-二甲基十六烯-2,4,6,8,10,12,14-七烯，通过同聚合反应制备，已在钯催化的铃木和斯廷交叉偶联反应中与适当的反应伙伴一起使用，以构建具有C2对称性的类胡萝卜素β,β-胡萝卜素、番茄红素、蓝藻黄素和4,4'-二阿波-ψ,ψ-胡萝卜素-4,4'-二醇。
• NOVEL TRIAZINE COMPOUND AND SYNTHETIC RESIN COMPOSITION USING SAME
  申请人：ADEKA CORPORATION

  公开号：US20170327475A1

  公开（公告）日：2017-11-16

  A novel compound excellent in heat resistance, resistance to volatilization, and compatibility with a resin component and useful as a UV absorber and a synthetic resin composition containing the compound are provided. Specifically provided are a triazine compound of general formula (1), preferably general formula (2) and a synthetic resin composition containing 0.001 to 20 parts by mass of the compound per 100 parts by mass of a synthetic resin. The details of formulae (1) and (2) are as defined in the description.

  提供了一种在耐热性、抗挥发性和与树脂成分的相容性方面表现出色的新型化合物，可用作紫外线吸收剂和含有该化合物的合成树脂组合物。具体提供的是一般式（1）的三嗪化合物，优选一般式（2）的化合物和含有该化合物每100份合成树脂中0.001至20质量份的合成树脂组合物。一般式（1）和（2）的细节如描述中定义。
• Fluorinated Dicarboxylic Acid Derivative and Polymer Obtained Therefrom
  申请人：Isono Yoshimi

  公开号：US20110301305A1

  公开（公告）日：2011-12-08

  According to the present invention, a polymer is obtained by polycondensation of a fluorinated dicarboxylic acid derivative of the general formula (M-1) or an acid anhydride of the fluorinated dicarboxylic acid with a polyfunctional compound having two to four reactive groups corresponding in reactivity to carbonyl moieties of the fluorinated dicarboxylic acid derivative or acid anhydride. [Chem. 134] AOCF 2 C-Q-CF 2 COA′  (M-1) In the above formula, Q represents a divalent organic group having a substituted or unsubstituted aromatic ring; and A and A′ each independently represent an organic group. This polymer exhibits a sufficiently low dielectric constant for use as a semiconductor protection film and has the capability of forming a film at a relatively low temperature of 250° C. or lower.

  根据本发明，通过将通式(M-1)的含氟二羧酸衍生物或含氟二羧酸酸酐与具有与含氟二羧酸衍生物或酸酐的羰基部分相对应的两到四个反应性基团的多官能化合物进行聚合缩合反应，可以得到一种聚合物。[Chem. 134]AOCF2C-Q-CF2COA′  (M-1)在上述公式中，Q代表具有取代或未取代芳香环的二价有机基团; A和A'各自独立地表示有机基团。该聚合物表现出足够低的介电常数，可用作半导体保护膜，并具有在相对较低的温度下（250℃或更低）形成膜的能力。
• AN EPOXY RESIN CURING AGENT AND PREPARATION METHODS AND USES THEREOF
  申请人：Guangdong Guangshan New Materials Co., Ltd.

  公开号：EP3181608A1

  公开（公告）日：2017-06-21

  The present invention relates to an epoxy resin curing agent having a structure of Formula I and preparation methods and uses thereof. The present invention makes a resin composition formed by the epoxy resin curing agent have good low dielectric properties by using an epoxy resin curing agent having a specific structure, and the cured products of the epoxy resin composition have low dielectric constant and dielectric loss and good heat resistance and are low dielectric materials having great economic properties and being environmental friendly.

  本发明涉及一种具有式 I 结构的环氧树脂固化剂及其制备方法和用途。本发明通过使用具有特定结构的环氧树脂固化剂，使环氧树脂固化剂形成的树脂组合物具有良好的低介电性能，环氧树脂组合物的固化产物具有较低的介电常数和介电损耗以及良好的耐热性，是具有良好经济性和环保性的低介电材料。
• NEW TRIAZINE COMPOUND AND SYNTHETIC RESIN COMPOSITION OBTAINED USING SAME
  申请人：Adeka Corporation

  公开号：EP3231794A1

  公开（公告）日：2017-10-18

  A novel compound excellent in heat resistance, resistance to volatilization, and compatibility with a resin component and useful as a UV absorber and a synthetic resin composition containing the compound are provided. Specifically provided are a triazine compound of general formula (1), preferably general formula (2) and a synthetic resin composition containing 0.001 to 20 parts by mass of the compound per 100 parts by mass of a synthetic resin. The details of formulae (1) and (2) are as defined in the description of the invention.

  本发明提供了一种在耐热性、抗挥发性和与树脂成分的相容性方面均具有优异性能并可用作紫外线吸收剂的新型化合物，以及一种含有该化合物的合成树脂组合物。具体而言，本发明提供了通式（1）（最好是通式（2））的三嗪化合物，以及每 100 份合成树脂中含有 0.001 至 20 份（质量份）该化合物的合成树脂组合物。式（1）和式（2）的详细说明见本发明的说明。