(E)-2,4-Dimethyl-2-hexenoic acid | 54211-44-8

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: (E)-2,4-Dimethyl-2-hexenoic acid
• 英文别名: (E)-2,4-Dimethyl-2-hexensaeure；2,4-Dimethyl-2-hexenoic acid；(E)-2,4-dimethylhex-2-enoic acid
• CAS: 54211-44-8
• 化学式: C₈H₁₄O₂
• 分子量: 142.198
• InChiKey: DCELYZLYGOHVMN-FNORWQNLSA-N

物化性质

• 沸点：
  235.5±9.0 °C(Predicted)
• 密度：
  0.954±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  10
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  2-甲基-3-氧代戊酸乙酯 在 sodium hydroxide 、 sodium tetrahydroborate 作用下， 以 甲醇 、 乙醇 为溶剂， 生成 (E)-2,4-Dimethyl-2-hexenoic acid
  参考文献：
  名称：

  Highly stereoselective and completely regiospecific method for the dehydration of .beta.-hydroxy esters via .beta.-alanoxy enolates. Application to the synthesis of trisubstituted olefins and two ant mandibular gland secretions

  摘要：

  DOI：

  10.1021/ja00826a031

文献信息

• [EN] LIGHT HARVESTING ARRAY<br/>[FR] RÉSEAU COLLECTEUR DE LUMIÈRE
  申请人：FLUROSOL IND PTY LTD

  公开号：WO2015024064A1

  公开（公告）日：2015-02-26

  The invention relates to a light harvesting array or dye comprising an acceptor linked to a donor, wherein at least one of the acceptor or the donor is an oligomeric unit comprising a first optionally substituted rylene linked via a linker group to a second optionally substituted rylene, the first optionally substituted rylene is linked to the acceptor or the donor and the second optionally substituted rylene is capable of energy transfer to at least one of the first optionally substituted rylene, the acceptor or the donor. The invention also relates to compounds which may be used as light harvesting arrays, methods for their manufacture, and devices and materials comprising the light harvesting array or dye, for example, chromophoric materials, light guides, photobioreactors, photoluminescent algae systems, photodetectors, photovoltaic devices and luminescent/fluorescent solar concentrators.

  该发明涉及一种光收集阵列或染料，包括一个与给体相连的受体，其中受体或给体中至少有一个是包含第一可选择取代的芳香烃单元通过连接基团连接到第二可选择取代的芳香烃的寡聚单元，第一可选择取代的芳香烃与受体或给体相连，第二可选择取代的芳香烃能够将能量传递至第一可选择取代的芳香烃、受体或给体中的至少一个。该发明还涉及可用作光收集阵列的化合物，其制造方法，以及包括光收集阵列或染料的设备和材料，例如，色素材料、光导管、光生物反应器、光致发光藻类系统、光探测器、光伏器件和发光/荧光太阳能聚光器。
• [EN] PHOTOPERIODIC CONTROL OF PHYTOCHROME WITH MATERIALS<br/>[FR] CONTRÔLE PHOTOPÉRIODIQUE DE PHYTOCHROME AVEC DES MATÉRIAUX
  申请人：LLEAF PTY LTD

  公开号：WO2020163917A1

  公开（公告）日：2020-08-20

  Disclosed herein are articles and devices, such as photo-selective films, which may be used to influence the growth of photosynthetic organisms. These article and devices may comprise one or more compounds of Formula (I) and/or Formula (II), along with one or more optional auxiliary dyes. Methods of controlling the growth of plants and for the manufacture of said articles and devices are also disclosed herein.

  本文披露了一些文章和设备，例如光选择性薄膜，可用于影响光合生物的生长。这些文章和设备可能包括一个或多个Formula（I）和/或Formula（II）的化合物，以及一个或多个可选的辅助染料。本文还披露了控制植物生长的方法以及用于制造上述文章和设备的方法。
• [EN] DERIVATIVES OF FATTY ESTERS, FATTY ACIDS AND ROSINS<br/>[FR] DÉRIVÉS D'ESTERS D'ACIDE GRAS, ACIDES GRAS ET ROSINES
  申请人：UNIV WASHINGTON STATE RES FDN

  公开号：WO2014116996A1

  公开（公告）日：2014-07-31

  Provided is a compound of Formula (I); where R1, R2, L1 and L2 are as described herein. The compound of Formula I and copolymers thereof can be used as epoxy resins, curing agents, flame retardants, UV curable agents and the like. A process for preparing the compound of Formula (I) is also provided.

  提供的是化合物的化学式（I）；其中R1、R2、L1和L2如本文所述。化合物的化学式I及其共聚物可用作环氧树脂、固化剂、阻燃剂、紫外光固化剂等。还提供了一种制备化合物的化学式（I）的方法。
• Simple access to 2-methylalk-2-enoates and insect pheromones by zinc-promoted reduction of Baylis–Hillman-derived allylic bromides
  作者：Luciano Fernandes、Adailton J. Bortoluzzi、Marcus M. Sá

  DOI：10.1016/j.tet.2004.08.018

  日期：2004.10

  (E)-2-Methylacrylates are prepared in good yield and high stereoselectivity by zinc-promoted reduction of 2-(bromomethyl) alkenoates derived from Baylis-Hillman adducts. Synthesis of the male ant pheromone (E)-2,4-dimethyl-2-hexenoic acid was performed using this simple methodology. (C) 2004 Elsevier Ltd. All rights reserved.

  (E)-2-甲基丙烯酸酯是以锌促化的还原反应，在Baylis-Hillman加成产物的2-（溴甲基）烯酰基化合物中有效生成，成产率好、选择性高。通过该简单的方法，获得了雄式连锁蚂蚁的雄性外 секрет酸（(E)-2,4-二甲基-2-戊二酸）。© 2004 Elsevier Ltd. 保留所有版权。
• Process for Preparing an Overbased Detergent
  申请人：Kocsis A. Jody

  公开号：US20060178278A1

  公开（公告）日：2006-08-10

  The invention relates to a process for preparing an overbased metal detergent in an oil medium comprising the steps of: (1) providing a metal salt selected from the group consisting of a hydrocarbyl-substituted organic acid; a hydrocarbyl-substituted phenol, a phenate, a hydrocarbyl-substituted carboxylate and mixtures thereof; (2) further providing methanol and a mixture of alcohols containing 2 to about 7 carbon atoms, wherein the mole ratio of methanol to the mixture of alcohols is about 2.2 or less, to form a mixture; (3) further providing a basic metal compound; (4) reacting the mixture of step (3) with carbon dioxide to form a carbonated overbased metal sulphonate; (5) performing steps (3) and (4) at least three additional times upon the product of step (4); (6) thereafter removing at least a portion of the water produced in steps (1)-(5) and of the alcohols introduced in step (2); (7) performing step (2) again, upon the product of step (6); (8) performing steps (3) and (4) at least two additional times upon the product of step (7); and (9) thereafter removing a substantial portion of the water and of the alcohols from the composition; wherein the oil medium is present in an amount such that the weight ratio of the acid corresponding to the metal salt of (1) to the oil medium is 0.3 to 1.4; and wherein step (6) is required when the hydrocarbyl-substituted organic acid is a hydrocarbyl-substituted sulphonic acid. The invention further relates to its use in internal combustion engines.

  该发明涉及一种在油介质中制备过基金属清洁剂的方法，包括以下步骤：（1）提供一种选自羟烃基取代有机酸、羟烃基取代酚、酚酸盐、羟烃基取代羧酸盐及其混合物的金属盐；（2）进一步提供甲醇和含有2至约7个碳原子的醇混合物，其中甲醇与醇混合物的摩尔比约为2.2或更低，形成混合物；（3）进一步提供一种碱性金属化合物；（4）将步骤（3）的混合物与二氧化碳反应，形成碳酸盐过基金属磺酸盐；（5）对步骤（4）的产物至少进行三次以上的步骤（3）和（4）；（6）随后至少去除步骤（1）至（5）中产生的部分水和步骤（2）中引入的醇；（7）对步骤（6）的产物再次执行步骤（2）；（8）对步骤（7）的产物至少进行两次以上的步骤（3）和（4）；（9）随后从组合物中去除大部分水和醇；其中油介质的量使得步骤（1）中金属盐对应的酸与油介质的重量比为0.3至1.4；当羟烃基取代有机酸为羟烃基取代磺酸时，需要步骤（6）。该发明还涉及该方法在内燃机中的应用。