xanthone-2-acetic acid | 30087-31-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: xanthone-2-acetic acid
• 英文别名: (9-oxo-9H-xanthen-2-yl)acetic acid；Xanthene-2-acetic acid, 9-oxo-；2-(9-oxoxanthen-2-yl)acetic acid
• CAS: 30087-31-1
• 化学式: C₁₅H₁₀O₄
• 分子量: 254.242
• InChiKey: MVECANJXWFSQQF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  19
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  63.6
• 氢给体数：
  1
• 氢受体数：
  4

安全信息

• 海关编码：
  2932999099

反应信息

• 作为反应物：
  描述：

  xanthone-2-acetic acid 在 氢氧化钾 作用下， 以 水 为溶剂， 反应 0.03h， 以30%的产率得到2-methyl-9H-xanthen-9-one
  参考文献：
  名称：

  x吨酮乙酸的光脱羧：单峰激发态的CC键杂合。

  摘要：

  [反应：见正文]在含水缓冲液（pH 7.4）中辐照2-和4-蒽酮乙酸可导致有效的脱羧作用（分别为Phi = 0.67和0.64），得到相应的甲基产物，与中间的苄基碳负离子相符。荧光和激光闪光光解（LFP）研究表明，单重态反应性对于芳香族酮是不常见的。3-X吨酮乙酸在相同条件下是光惰性的。结果表明，反应性x吨酮乙酸是碳负离子介导的光笼的前体。

  DOI：

  10.1021/ol052953d
• 作为产物：
  描述：

  对羟基苯乙酸 在 硫酸 、 三(3,6-二氧杂庚基)胺 、 caesium carbonate 、 copper(l) chloride 作用下， 以 1,4-二氧六环 为溶剂， 反应 21.0h， 生成 xanthone-2-acetic acid
  参考文献：
  名称：

  x吨酮乙酸的光脱羧：单峰激发态的CC键杂合。

  摘要：

  [反应：见正文]在含水缓冲液（pH 7.4）中辐照2-和4-蒽酮乙酸可导致有效的脱羧作用（分别为Phi = 0.67和0.64），得到相应的甲基产物，与中间的苄基碳负离子相符。荧光和激光闪光光解（LFP）研究表明，单重态反应性对于芳香族酮是不常见的。3-X吨酮乙酸在相同条件下是光惰性的。结果表明，反应性x吨酮乙酸是碳负离子介导的光笼的前体。

  DOI：

  10.1021/ol052953d

文献信息

• [EN] MICROCAPSULES CONTAINING A GAS-RELEASING PHOTOLABILE COMPOUND AND USES THEREOF<br/>[FR] MICROCAPSULES CONTENANT UN COMPOSE PHOTOLABILE DE LIBÉRATION DE GAZ, ET LEURS UTILISATIONS
  申请人：FIRMENICH & CIE

  公开号：WO2014187874A1

  公开（公告）日：2014-11-27

  The present invention relates to water-dispersible microcapsules comprising an oil phase, e.g. a perfume, containing a photolabile compound capable of generating a gas upon exposure to light. The gas is able to cause an extension or the breaking of the microcapsule allowing the release of the oil phase and thus increasing the long-lastingness of the odor perception. The present invention concerns also the use of said microcapsules in perfumery as well as the perfuming compositions or perfumed articles comprising the invention's microcapsules to provide a prolonged release of fragrant molecules.

  本发明涉及水分散微胶囊，包括油相，例如香水，其中含有能够在光照作用下产生气体的光敏化合物。该气体能够引起微胶囊的延展或破裂，从而释放油相，从而增加气味感知的持久性。本发明还涉及在香水中使用所述微胶囊，以及包含本发明微胶囊的香水组合物或香水制品，以提供芳香分子的持续释放。
• Ketoprofen as a photoinitiator for anionic polymerization
  作者：Yu-Hsuan Wang、Peter Wan

  DOI：10.1039/c4pp00454j

  日期：2015.6

  efficient photodecarboxylation of Ketoprofen (1) and the related derivatives 3 and 4 that generate the corresponding carbanion intermediates is presented. Carbanion intermediates are confirmed by deuterium incorporation in the trapped Michael adducts and by spectroscopic detection using laser flash photolysis (LFP). This novel anionic initiating system features excitation in the near UV and visible regions

  提出了一种新的光引发体系，用于丙烯酸酯的阴离子聚合，它基于酮洛芬（1）以及产生相应碳负离子中间体的相关衍生物3和4的有效光脱羧作用。通过在捕获的迈克尔加合物中掺入氘和通过使用激光闪光光解（LFP）的光谱检测来确认碳负离子中间体。这种新颖的阴离子引发系统具有在紫外线附近和可见光区域的激发，光控活性聚合的潜在特性以及由光激发产生的无金属光引发剂，这与典型的阴离子聚合不同，后者是由热量和强碱金属碱引发的。
• PHOTOCURING METHOD, COMPOUND AND COMPOSITION USED THEREIN
  申请人：FUJIFILM Wako Pure Chemical Corporation

  公开号：US20190055210A1

  公开（公告）日：2019-02-21

  An object of the present invention is to provide a photocuring method, which makes it possible to rapidly and efficiently obtain a crosslinked product (resin), a compound used in the photocuring method, and a photocuring resin composition containing the compound. The present invention relates to a photocuring method, which comprises a step 1 and a step 2 performed after the step 1, a compound used in the photocuring method, and a photocuring resin composition containing the compound. Step 1: this is a step in which in the presence of (A) compound having a carbonyl group generating a radical by photoirradiation and a carboxyl group decarboxylated by photoirradiation, (B) silane coupling agent having a mercapto group or a (meth)acryl group is reacted with (C) water under acidic conditions to obtain (D) silane compound having a mercapto group or a (meth)acryl group and at least one silanol group. Step 2: this is a step in which in the presence of the compound (A) and (E) compound having a carbonyl group generating a radical by photoirradiation and a group generating a base by being decarboxylated by photoirradiation, the compound (A) and the compound (E) are irradiated with light to create alkaline conditions in a reaction system by decarboxylating the carboxyl group of the compound (A) and generating a base from the compound (E), and radicals are generated from the compound (A) and the compound (E) to generate a crosslinked product containing a constitutional unit derived from the silane compound (D) from the silane compound (D) and, if necessary, from (F) compound having two or more polymerizable unsaturated groups.

  本发明的一个目标是提供一种光固化方法，该方法使得能够快速高效地获得交联产物（树脂），以及用于光固化方法的化合物和含有该化合物的光固化树脂组合物。本发明涉及一种光固化方法，该方法包括在步骤1和步骤2之后执行的步骤1和步骤2，以及用于光固化方法的化合物和含有该化合物的光固化树脂组合物。步骤1：这是一个步骤，在该步骤中，在（A）具有通过光照生成自由基的羰基和通过光照脱羧生成羧基的化合物的存在下，（B）具有巯基或（甲基）丙烯基的硅烷偶联剂在酸性条件下与（C）水反应，以获得具有巯基或（甲基）丙烯基和至少一个硅醇基团的（D）硅烷化合物。步骤2：这是一个步骤，在该步骤中，在化合物（A）和（E）具有通过光照生成自由基的羰基和通过光照脱羧生成碱基的化合物的存在下，通过照射光线使化合物（A）和化合物（E）在反应系统中产生碱性条件，通过脱羧化合物（A）的羧基并从化合物（E）中生成碱基，并从化合物（A）和化合物（E）中生成自由基，从而生成包含从硅烷化合物（D）派生的构造单元的交联产物，如果需要，还可以从具有两个或更多可聚合不饱和基团的化合物（F）中派生。
• BASE GENERATOR, BASE-REACTIVE COMPOSITION CONTAINING SAID BASE GENERATOR, AND BASE GENERATION METHOD
  申请人：WAKO PURE CHEMICAL INDUSTRIES, LTD.

  公开号：US20160122292A1

  公开（公告）日：2016-05-05

  It is a subject of the present invention to provide a base generator which has high solubility to general-purpose organic solvents, can dissolve directly into a base-reactive compound, such as an epoxy-based compound, further is provided with both performance of high heat resistance and low nucleophilicity, and generates a strong base, a base-reactive composition comprising the base generator and a base-reactive compound, as well as a method for generating a base, etc. The present invention relates to a compound represented by the general formula (A), a base generator comprising the compound, a base-reactive composition which comprises the base generator and a base-reactive compound, as well as a method for generating a base, etc. (wherein R 1 to R 5 each independently represent a hydrogen atom; an alkyl group; an aryl group which may have a substituent; or an arylalkyl group which may have a substituent, R 6 represents a hydrogen atom; an alkyl group which may have a substituent; an alkenyl group; an alkynyl group; an aryl group which may have a substituent; or an arylalkyl group which may have a substituent, R 7 represents a hydrogen atom; an alkyl group which may have an amino group; an aryl group which may have a substituent; or an arylalkyl group which may have a substituent, and Z − represents an anion derived from a carboxylic acid having a specific structure.)

  本发明的一个目的是提供一种基发生剂，其对通用有机溶剂具有高溶解度，可以直接溶解为一种碱反应性化合物，例如基于环氧树脂的化合物，进一步具有高耐热性和低亲核性的性能，并生成强碱，包括基发生剂和碱反应性化合物的碱反应性组合物，以及生成碱的方法等。本发明涉及一种由通式（A）表示的化合物，包括该化合物的基发生剂，包括基发生剂和碱反应性化合物的碱反应性组合物，以及生成碱的方法等。（其中R1至R5各自独立地表示氢原子；烷基基团；可能具有取代基的芳基团；或可能具有取代基的芳基烷基基团，R6表示氢原子；可能具有取代基的烷基基团；烯基基团；炔基基团；可能具有取代基的芳基团；或可能具有取代基的芳基烷基基团，R7表示氢原子；可能具有氨基的烷基基团；可能具有取代基的芳基团；或可能具有取代基的芳基烷基基团，Z-表示从具有特定结构的羧酸衍生的阴离子。）
• Cyclic diphenylacetonitriles as stabilizers
  申请人：Ciba Specialty Chemicals Corporation

  公开号：US05710198A1

  公开（公告）日：1998-01-20

  Compounds of the formula I ##STR1## in which the general symbols are as defined in claim 1, as stabilizers for organic materials against thermal, oxidative or light-induced degradation are described.

  本发明涉及一种化合物，其化学式为I ##STR1## 其中一般符号如权利要求1所定义，作为有机材料的稳定剂，用于抵抗热、氧化或光诱导的降解。