Di-(2,3-dimethylbenzyl)-keton | 1217-63-6

• 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: Di-(2,3-dimethylbenzyl)-keton
• 英文别名: 2,3,2',3'-Tetramethyl-benzophenon；2,2',3,3'-Tetramethyl-benzophenon；2,3,2',3'-tetramethyl-benzophenone；dixylylketone；2,2',3,3'-tetramethylbenzophenone；Bis(2,3-dimethylphenyl)methanone
• CAS: 1217-63-6
• 化学式: C₁₇H₁₈O
• mdl: MFCD12973919
• 分子量: 238.329
• InChiKey: NJQWTNSSQVRUPB-UHFFFAOYSA-N

物化性质

• 沸点：
  349.5±31.0 °C(Predicted)
• 密度：
  1.024±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.7
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.235
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  Di-(2,3-dimethylbenzyl)-keton 在 乙醚 、 Petroleum ether 作用下， 生成 2,3,2',3',2'',3''-hexamethyl-trityl chloride
  参考文献：
  名称：

  Faber; Nauta, Recueil des Travaux Chimiques des Pays-Bas, 1942, vol. 61, p. 469,471

  摘要：

  DOI：
• 作为产物：
  描述：

  2,3-二甲基苯胺 在 氢溴酸 、 magnesium 作用下， 反应 2.0h， 生成 Di-(2,3-dimethylbenzyl)-keton
  参考文献：
  名称：

  Aromatische Spirane, 20. Mitt.: Darstellung von dimethylsubstituierten 2-Carboxymethyl-indan-1-onen und Benzylchloriden als Synthone f�r Synthesen von di- bis tetramethylierten 2,2?-Spirobiindandionen

  摘要：

  The isomeric dimethyl methylbenzoates 5, obtained from the bromides via Grignard reactions with dimethylcarbonate, were reduced with LiAlH4 to the hydroxymethyl derivatives 6. The latter were then transformed both to the benzylchlorides 7 (with SOCl2) and to the aldehydes 8 (with pyridinium chlorochromate). Knoevenagel-Doebner reaction of 8 afforded the acrylic acids 9 which (after hydrogenation to 11) were cyclized to the desired indanones 12 with polyphosphoric acid. On the other hand, 12c and 12e were prepared from dimethyl 3-chloropropiophenone (14) by warming with sulfuric acid. After NaH-catalyzed reaction with dimethylcarbonate, the indanones 12 gave the ketoesters 15 which then could be hydrogenated to the indanes 16. All reactions proceeded with satisfactory to excellent yields (60-90%).

  DOI：

  10.1007/bf00807400

文献信息

• [EN] PHOTOALIGNING MATERIAL<br/>[FR] MATÉRIAU DE PHOTOALIGNEMENT
  申请人：ROLIC AG

  公开号：WO2013017467A1

  公开（公告）日：2013-02-07

  The present invention relates to a copolymer for the photoalignment of liquid crystals comprising a photoreactive group as given below in formula (I), compositions thereof, and its use for optical and electro optical devices, especially liquid crystal devices (LCDs).

  本发明涉及一种共聚物，用于液晶的光调向，包括如下所示的具有光反应性基团的化合物（I）的公式，以及其组合物，以及其在光学和电光设备，特别是液晶设备（LCD）中的使用。
• PHOTOREACTIVE COMPOUNDS
  申请人：Lincker Frederic

  公开号：US20140192305A1

  公开（公告）日：2014-07-10

  The present invention relates to photoreactive compounds that are particularly useful in materials for the alignment of liquid crystals.

  本发明涉及光反应性化合物，特别适用于液晶对准材料的制作。
• PROCESS FOR PRODUCING AROMATIC POLYCARBOXYLIC ACID
  申请人：Shibamoto Akihiro

  公开号：US20110071314A1

  公开（公告）日：2011-03-24

  A process for producing an aromatic polycarboxylic acid in which all alkyl groups are converted into carboxyl groups in a high yield by decreasing a residual amount of an intermediate product is provided. The process comprises oxygen-oxidizing an aromatic compound having a plurality of alkyl groups (e.g., durene) in the presence of a catalyst containing a cyclic imino unit having an N—OR group (wherein R represents a hydrogen atom or a protecting group for a hydroxyl group) and a transition metal co-catalyst (e.g., a cobalt compound, a manganese compound, and a zirconium compound) under heating in a lower-temperature zone and a higher-temperature zone to produce an aromatic polycarboxylic acid in which a plurality of alkyl groups are oxidized into carboxyl groups. In an initial stage of the reaction, the reaction may be conducted in a first lower-temperature zone (a reaction temperature of 60 to 120° C. and a second lower-temperature zone (an intermediate temperature zone) (a reaction temperature of 100 to 140° C.); and then, in a latter stage of the reaction, the reaction may be conducted in a higher-temperature zone (a reaction temperature of 110 to 150° C.).

  提供一种生产芳香族多羧酸的方法，其中所有烷基转化为羧基，产率高，通过减少中间产物的残留量实现。该方法包括在低温区和高温区加热的条件下，在催化剂的存在下，将具有多个烷基的芳香化合物（例如二甲苯）进行氧气氧化，其中催化剂包含具有N-OR基团（其中R代表氢原子或羟基的保护基团）和过渡金属共催化剂（例如钴化合物、锰化合物和锆化合物）的环状亚胺单元，以产生芳香族多羧酸，其中多个烷基被氧化为羧基。在反应的初始阶段，反应可以在第一低温区（反应温度为60至120°C）和第二低温区（中间温度区）（反应温度为100至140°C）进行；然后，在反应的后期阶段，反应可以在较高温度区（反应温度为110至150°C）进行。
• PHOTOALIGNING MATERIAL
  申请人：Eckert Jean-Francois

  公开号：US20140162076A1

  公开（公告）日：2014-06-12

  The present invention relates to a copolymer for the photoalignment of liquid crystals comprising a photoreactive group as given below in formula (I), compositions thereof, and its use for optical and electro optical devices, especially liquid crystal devices (LCDs).

  本发明涉及一种共聚物，用于液晶的光定向，包括以下式子（I）中给出的光反应性基团，以及其组合物，以及其在光学和电光设备，特别是液晶设备（LCD）中的使用。
• Process for preparation of aromatic polycarboxylic acids and intermediates therefor
  申请人：THE UPJOHN COMPANY

  公开号：EP0125342A1

  公开（公告）日：1984-11-21

  A method is described for autoxidizing particular ortho-dialkyl substituted aromatic compounds using a particular type of solvent which gives rise to the formation of 3-alkanoyloxyphthalide compounds, some of which are novel. The phthalides in turn are ionically oxidized to their corresponding aromatic polycarboxylic acids. Combination of the two methods provides a means for converting ortho dialkyl substituted aromatic compounds directly to the corresponding polycarboxylic acids in higher yields and at generally lower overall temperatures and reaction conditions compared to prior art methods. Polycarboxylic acids so obtained are known to be useful in the preparation of alkyds, polyesters, and the like, and, particularly, in the formation of the corresponding acid anhydrides which are used in the preparation of organic high temperature polymers such as polyamides, polyamideimides, and polyimides.

  描述了一种使用特定类型溶剂对特定邻二烷基取代的芳香族化合物进行自氧化的方法，该方法可生成 3-烷酰氧基邻苯二甲酸盐化合物，其中一些是新型化合物。 这些邻苯二甲酸盐又被离子氧化成相应的芳香族多羧酸。 与现有技术相比，这两种方法的结合提供了一种将正交二烷基取代的芳香族化合物直接转化为相应的聚羧酸的方法，收率更高，总体温度和反应条件通常更低。 众所周知，这样得到的聚羧酸可用于制备醇酸树脂、聚酯等，特别是形成相应的酸酐，用于制备有机高温聚合物，如聚酰胺、聚酰胺酰亚胺和聚酰亚胺。