2-甲基间苯二甲酸 | 15120-47-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 2-甲基间苯二甲酸
• 英文名称: 2-Methyl-isophthalsaeure
• 英文别名: 2-methylisophthalic acid；2-methylbenzene-1,3-dicarboxylic acid
• CAS: 15120-47-5
• 化学式: C₉H₈O₄
• mdl: MFCD00157035
• 分子量: 180.16
• InChiKey: AIDLAEPHWROGFI-UHFFFAOYSA-N

物化性质

• 熔点：
  236-238 °C
• 沸点：
  402.4±33.0 °C(Predicted)
• 密度：
  1.377±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.111
• 拓扑面积：
  74.6
• 氢给体数：
  2
• 氢受体数：
  4

安全信息

• 危险性防范说明：
  P261,P280,P301+P312,P302+P352,P305+P351+P338
• 危险性描述：
  H302,H315,H319,H335

反应信息

• 作为反应物：
  描述：

  2-甲基间苯二甲酸 在 N-溴代丁二酰亚胺(NBS) 、 过氧化氢苯甲酰 、 硫酸 作用下， 以 四氯化碳 为溶剂， 反应 24.5h， 生成 dimethyl 2-(bromomethyl)-1,3-benzenedicarboxylate
  参考文献：
  名称：

  Synthesis of 9-Methoxymethyl-18-methyl-2,11-dithia[3.3]metacyclophane: a Dithia[3.3]metacyclophane With a Protected Internal Benzylic Functional Group

  摘要：

  本文介绍了一种在 C9 位带有苄基官能团（甲氧基甲基）的二硫[3.3]偏环烷的合成路线。不过，苄基官能团必须在合成方案的后期引入，以优化总产率。只分离出了所需的二硫代环烷（7）的反异构体。如 1H n.m.r. 光谱所示，整个甲氧基甲基位于对侧苯环的屏蔽区内。然而，通过重排-消除顺序将反（7）转化为新型芳香系统（5b）的尝试失败了。

  DOI：

  10.1071/ch9901783
• 作为产物：
  描述：

  间苯二甲腈 在 氢氧化钾 、 lithium diisopropyl amide 作用下， 生成 2-甲基间苯二甲酸
  参考文献：
  名称：

  Design and Synthesis of a Trifunctional Chiral Porphyrin with C2 Symmetry as a Chiral Recognition Host for Amino Acid Esters

  摘要：

  An intrinsic chiral recognition host, (R,R)- or (S,S)-[trans-5,15-bis(2-hydroxyphenyl)-10-{2,6-bis((methoxycarbonyl)methyl)phenyl}-2,3,17,18-tetraethylporphyrinato]zinc(II) (1), was synthesized by the coupling between (3,3',4,4'-tetraethyl-5,5'-bis(alpha-hydroxy-2-methoxybenzyl)-2,2'-dipyrryl)methane (8) and dimethyl 2-(bis(2-pyrryl)-methyl)-1, 3-benzenediacetate (16). This pyrrylmethanol method made it possible to perform the regiospecific coupling between differently functionalized dipyrromethane units. Host 1 was designed to have three recognition elements: metal coordination, hydrogen bond donor, and hydrogen bond acceptor (and/or steric repulsion) groups. These groups are arranged in a convergent fashion, forming a chiral recognition pocket. Host 1 was resolved into two enantiomers, (+)-1 and (-)-1. The binding constants in CHCl3 were determined by UV-vis titration. Host (+)-1 was found to show an enantioselectivity of 2.0-2.8 in respect to L- and D-enantiomers of Ile-OMe, Leu-OMe, Leu-OBzl, Val-OMe, Pro-OMe, and Phe-OMe. Host (+)-1 showed an enantioselectivity of 0.47 in respect to L- and D-enantiomers of serine benzyl ester, indicating that the enantioselectivity was reversed. Reference porphyrins 2-4, which lack some of recognition groups, were also synthesized by the pyrrylmethanol method to clarify the roles of the recognition groups of (+)-1 in thermodynamics of the binding processes. Total free energy change upon binding of L- and D-Ile-OMe to host (+)-1 (Delta G degrees(total) for L, -5.05, and D, -4.46 kcal/mol) was separated into three terms: metal coordination energy (Delta G degrees(Zn)), -4.15 kcal/mol; hydrogen bond energy (Delta Delta G degrees(OH)), -1.30 kcal/mol; and steric repulsion energy (Delta Delta G degrees(COOMe)(L) or Delta Delta G degrees(COOMe)(D)), +0.40 kcal/mol for L- and +0.99 kcal/mol for D-Ile-OMe. The third recognition group (CH(2)CO(2)Me) of (+)-1 was found to destabilize the complexes due to steric repulsions. In contrast, the CH(2)CO(2)Me group was found to stabilize the complex between D-Ser-OBzl and (+)-1, suggesting that hydrogen bonding between the OH group of serine and the C=O group of (+)-1 takes place. On the basis of these thermodynamic studies, chiral recognition was found to be achieved by cooperative functions of these three recognition groups.

  DOI：

  10.1021/ja00089a013

文献信息

• Novel Photoluminescent Polymers Containing Oligothiophene and <i>m</i>-Phenylene-1,3,4-oxadiazole Moieties:  Synthesis and Spectroscopic and Electrochemical Studies
  作者：Hong Meng、Wei Huang

  DOI：10.1021/jo991359c

  日期：2000.6.1

  Three conjugated polymers containing oligothiophene units (from one to three thiophene rings) and aromatic 1,3,4-oxadiazole moieties have been successfully synthesized. The polymer structures were characterized and confirmed by (1)H and (13)C NMR, FT-IR, and elemental analysis. Thermogravimetric analysis demonstrated that the polymers are highly thermal stable. Tunable absorption (from 342 to 428 nm)

  已经成功合成了三种包含低聚噻吩单元（从一个到三个噻吩环）和芳香族1,3,4-恶二唑部分的共轭聚合物。通过（1）H和（13）C NMR，FT-IR和元素分析来表征和确认聚合物结构。热重分析表明该聚合物是高度热稳定的。观察到了聚合物的可调吸收（342-428 nm）和荧光（411-558 nm）特性。电化学研究表明，可以调节新聚合物的LUMO和HOMO能级。电化学分析还表明，该聚合物对于p型和n型电荷载流子均具有良好的电荷注入性能，以及良好的颜色可调发光和成膜性能，
• ISOCYANATE PRODUCTION PROCESS
  申请人：Shinohata Masaaki

  公开号：US20110092731A1

  公开（公告）日：2011-04-21

  An object of the present invention is to provide a process that enables isocyanate to be produced stably over a long period of time and at high yield without encountering problems of the prior art during production of isocyanate without using phosgene. The present invention discloses a process for producing an isocyanate by subjecting a carbamic acid ester to a thermal decomposition reaction, including the steps of: recovering a low boiling point component in a form of a gaseous phase component from a thermal decomposition reaction vessel in which the thermal decomposition reaction is carried out; recovering a liquid phase component containing a carbamic acid ester from a bottom of the thermal decomposition reaction vessel; and supplying all or a portion of the liquid phase component to an upper portion of the thermal decomposition reaction vessel.

  本发明的一个目的是提供一种能够在长时间内稳定地高产且不使用光气的情况下生产异氰酸酯的方法，而不会遇到先前生产异氰酸酯时的问题。本发明公开了一种通过将氨基甲酸酯经受热分解反应来生产异氰酸酯的方法，包括以下步骤：从进行热分解反应的反应釜中回收形成气相组分的低沸点组分；从热分解反应釜底部回收含有氨基甲酸酯的液相组分；并将全部或部分液相组分供给至热分解反应釜的上部。
• PROCESS FOR PRODUCING ISOCYANATES USING DIARYL CARBONATE
  申请人：Shinohata Masaaki

  公开号：US20110054211A1

  公开（公告）日：2011-03-03

  An object of the present invention is to provide a process that enables isocyanate to be produced stably over a long period of time and at high yield without encountering problems of the prior art during production of isocyanate without using phosgene. The present invention provides an isocyanate production process including the steps of: obtaining a reaction mixture containing an aryl carbamate having an aryl group originating in a diaryl carbonate, an aromatic hydroxy compound originating in a diaryl carbonate, and a diaryl carbonate, by reacting a diaryl carbonate and an amine compound in the presence of a reaction solvent in the form of an aromatic hydroxy compound; transferring the reaction mixture to a thermal decomposition reaction vessel; and obtaining isocyanate by applying the aryl carbamate to a thermal decomposition reaction, wherein the reaction vessel in which the reaction between the diaryl carbonate and the amine compound is carried out and the thermal decomposition reaction vessel for the aryl carbamate are different.

  本发明的一个目的是提供一种能够在生产异氰酸酯时在长时间内稳定地且高产率地生产异氰酸酯的方法，而不使用光气时遇到先前技术问题的方法。本发明提供了一种异氰酸酯生产方法，包括以下步骤：通过在反应溶剂形式的芳香羟基化合物存在下，通过反应二芳基碳酸酯和胺化合物得到含有源自二芳基碳酸酯的芳基碳酸酯、源自二芳基碳酸酯的芳香羟基化合物和二芳基碳酸酯的反应混合物；将反应混合物转移至热分解反应容器；通过将芳基碳酸酯应用于热分解反应来获得异氰酸酯，其中进行二芳基碳酸酯和胺化合物之间的反应的反应容器和用于芳基碳酸酯的热分解反应的反应容器是不同的。
• Novel Compounds
  申请人：Theoclitou Maria-Elena

  公开号：US20080004302A1

  公开（公告）日：2008-01-03

  There is provided a compound of formula (I): processes for the manufacture thereof, pharmaceutical compositions thereof and uses in therapy.

  提供了一个化合物，其化学式为(I)：制备方法、药物组合物以及在治疗中的用途。
• Process for Production of Alkyl Tin Alkoxide Compound, and Process for Production of Carbonic Acid Ester Using the Compound
  申请人：Shinohata Masaaki

  公开号：US20100292496A1

  公开（公告）日：2010-11-18

  The present invention provides a process for producing: a compound represented by XOR 2 ; a dialkyl tin dialkoxide compound having one tin atom, two Sn—R 1 bonds and two Sn—OR 2 bonds; and/or a tetraalkyl dialkoxy distannoxane compound having one Sn—O—Sn bond, in which each tin atom of the tetraalkyl dialkoxy distannoxane compound has two Sn—R 1 bonds and one Sn—OR 2 bond, the process comprising reacting in the absence of a catalyst at least one alkyl tin compound selected from the group consisting of i) and ii) below: i) a dialkyl tin compound having one tin atom, two Sn—R 1 (wherein R 1 represents an alkyl group) bonds, and two Sn—OX bonds (wherein OX is a group in which HOX that is a conjugate acid of OX is a Bronsted acid having a pKa of from 0 to 6.8); and ii) a tetraalkyl distannoxane compound having one Sn—O—Sn bond, in which each tin atom of the tetraalkyl distannoxane compound has two Sn—R 1 bonds and one Sn—OX bond (wherein OX is a group in which HOX that is a conjugate acid of OX is a Bronsted acid having a pKa of from 0 to 6.8); and a carbonic acid ester represented by R 2 OCOOR 2 (wherein R 2 represents a linear or branched, saturated or unsaturated hydrocarbon group, a hydrocarbon group having a saturated or unsaturated cyclic hydrocarbon substituent, or a Y—CH 2 — group (wherein Y represents an alkyl polyalkylene group, an aromatic group or a cyclic saturated or unsaturated alkylene ether group)), and/or an alcohol represented by R 2 OH (wherein R 2 is the same as defined above).

  本发明提供了一种生产过程：产生一个由XOR表示的化合物；具有一个锡原子、两个Sn—R1键和两个Sn—OR2键的二烷基锡二烷氧化合物；和/或具有一个Sn—O—Sn键的四烷基二烷氧基二锡烷氧化合物，其中四烷基二烷氧基二锡烷氧化合物的每个锡原子具有两个Sn—R1键和一个Sn—OR2键，所述过程包括在缺乏催化剂的情况下反应以下所述组中选择的至少一种烷基锡化合物： i) 具有一个锡原子、两个Sn—R1（其中R1代表烷基基团）键和两个Sn—OX键（其中OX是HOX的共轭酸，HOX是具有从0到6.8的pKa的Bronsted酸的群）的二烷基锡化合物；和 ii) 具有一个Sn—O—Sn键的四烷基二锡烷氧化合物，其中四烷基二锡烷氧化合物的每个锡原子具有两个Sn—R1键和一个Sn—OX键（其中OX是HOX的共轭酸，HOX是具有从0到6.8的pKa的Bronsted酸的群）；和 由R2OCOOR2（其中R2代表线性或支链、饱和或不饱和碳氢基团、具有饱和或不饱和环烃取代基的碳氢基团，或Y—CH2—基团（其中Y代表烷基多聚烯基基团、芳香基团或环状饱和或不饱和烷基醚基团））表示的碳酸酯；和/或 由R2OH（其中R2与上述定义相同）表示的醇。