2,3,4,4-tetramethylpentanoic acid | 67731-84-4

• 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: 2,3,4,4-tetramethylpentanoic acid
• CAS: 67731-84-4
• 化学式: C₉H₁₈O₂
• 分子量: 158.241
• InChiKey: IWQGPFOFKOXBRP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  11
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.89
• 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：

  3,4-二甲基氧杂环丁-2-酮 、 alkaline earth salt of/the/ methylsulfuric acid 在 Cu(I) salt 作用下， 生成 2,3,4,4-tetramethylpentanoic acid
  参考文献：
  名称：

  用有机铜试剂通过β-丙内酯的区域选择性开环合成三种碳均同羧酸的简便方法

  摘要：

  在铜（I）盐存在下，有机铜试剂，例如二有机铜酸盐，有机铜-三丁基膦和格利雅试剂，通过区域选择性的β-碳-氧裂变与β-丙内酯反应，生成3-取代的丙酸。在这三种有机铜试剂中，二有机铜酸盐，特别是铜卤化铝的酸收率最高，这在空间受阻的β-丙内酯（如β-甲基-和α，β-二甲基-β）的开环中表现得尤为明显。 -丙内酯，以及在使用带有铜和烯丙基取代基的有机铜试剂的反应中。S N证实β-丙内酯开环通过顺式-α，β-二甲基-β-丙内酯与二叔丁基杯酸酯的反应，β-碳的构型主要转化的2通路，得到syn-2,3,4,4-四甲基戊酸。

  DOI：

  10.1016/0040-4020(89)80068-7

文献信息

• ORGANIC COMPOUNDS AND THEIR USES
  申请人：Brandl Trixl

  公开号：US20100204159A1

  公开（公告）日：2010-08-12

  The present application describes organic compounds that are useful for the treatment, prevention and/or amelioration of human diseases.

  本申请描述了对人类疾病的治疗、预防和/或改善有用的有机化合物。
• Novel ailanthone derivative
  申请人：SUNTORY LIMITED

  公开号：EP0108645A2

  公开（公告）日：1984-05-16

  An ailanthone derivative having the general formula: wherein R is a p-alkyl benzoic acid residue having 8 to 21 carbon atoms, a 2-methyl saturated fatty acid residue having 6 to 19 carbon atoms, a 2-methyl-2-unsaturated fatty acid residue having 4 to 19 carbon atoms, a 3,4,-dimethyl-4- acyloxy-2-pentenoic acid residue having 9 to 19 carbon atoms, a 3,4,4-trimethyl-2-unsaturated fatty acid residue having 8 to 21 carbon atoms, a group having the formula wherein n is an integer of 1 to 13, a group having the general formula wherein n is an integer of 1 to 13, a trans-cinnamic acid residue, a linear saturated fatty acid residue having 3 to 22 carbon atoms, a 3-methyl-2-unsaturated fatty acid residue having 6 to 19 carbon atoms, a 3,4-dimethyl-2-unsaturated fatty acid residue having 7 to 20 carbon atoms, a terpenic acid residue, a 2-amino saturated fatty acid residue having 2 to 18 carbon atoms or a salt thereof, a 2-hydroxy saturated fatty acid residue having 3 to 18 carbon atoms, or a 3,5,5-trimethylhexanoic acid residue.

  一种具有通式的紫罗兰酮衍生物： 其中 R 是具有 8 至 21 个碳原子的对烷基苯甲酸残基、具有 6 至 19 个碳原子的 2-甲基饱和脂肪酸残基、具有 4 至 19 个碳原子的 2-甲基-2-不饱和脂肪酸残基、具有 9 至 19 个碳原子的 3,4,-二甲基-4-酰氧基-2-戊烯酸残基、具有 8 至 21 个碳原子的 3,4,4-三甲基-2-不饱和脂肪酸残基、通式为 其中 n 为 1 至 13 的整数、通式为 反式肉桂酸残基、具有 3 至 22 个碳原子的线性饱和脂肪酸残基、具有 6 至 19 个碳原子的 3-甲基-2-不饱和脂肪酸残基、具有 7 至 20 个碳原子的 3,4-二甲基-2-不饱和脂肪酸残基、萜酸残基、具有 2 至 18 个碳原子的 2-氨基饱和脂肪酸残基或其盐、具有 3 至 18 个碳原子的 2-羟基饱和脂肪酸残基或 3,5,5-三甲基己酸残基。
• REFRIGERATING MACHINE OIL AND WORKING FLUID COMPOSITION FOR REFRIGERATING MACHINES
  申请人：JX Nippon Oil & Energy Corporation

  公开号：EP2610329A1

  公开（公告）日：2013-07-03

  The refrigerating machine oil of the invention includes an ester of a polyhydric alcohol and a fatty acid, wherein the molar ratio of C4-C6 fatty acid and C7-C9 branched fatty acid in the fatty acid is between 15:85 and 90:10, the C4-C6 fatty acid includes 2-methylpropanoic acid, and the ratio of the total C4-C6 fatty acid and C7-C9 branched fatty acid in the total fatty acids composing the ester is at least 20 mol%. The working fluid composition for a refrigerating machine according to the invention comprises the refrigerating machine oil, a difluoromethane refrigerant and/or an unsaturated fluorinated hydrocarbon refrigerant.

  本发明的冷冻机油包括多元醇和脂肪酸的酯，其中脂肪酸中C4-C6脂肪酸和C7-C9支链脂肪酸的摩尔比在15:85和90:10之间，C4-C6脂肪酸包括2-甲基丙酸，组成酯的总脂肪酸中C4-C6脂肪酸和C7-C9支链脂肪酸的比例至少为20 mol%。根据本发明，用于制冷机的工作液组合物包括制冷机油、二氟甲烷制冷剂和/或不饱和氟化碳氢化合物制冷剂。
• REFRIGERATOR OIL COMPOSITION, METHOD FOR PRODUCING SAME, AND WORKING FLUID COMPOSITION FOR REFRIGERATORS
  申请人：JX Nippon Oil & Energy Corporation

  公开号：EP2818537A1

  公开（公告）日：2014-12-31

  A refrigerating machine oil composition comprising at least one ester additive selected from tetraesters of pentaerythritol and one selected from fatty acids having 5 to 18 carbon atoms and hexaesters of dipentaerythritol and one selected from fatty acids having 5 to 18 carbon atoms, and a base oil that is an ester other than the ester additive, in which the content of the ester additive is 2 to 20 mass% based on the total amount of the refrigerating machine oil composition, and the kinematic viscosity of the refrigerating machine oil composition at 40°C is 3 to 500 mm2/s.

  一种冷冻机油组合物，包含至少一种酯类添加剂，选自季戊四醇四酯和一种选自具有 5 至 18 个碳原子的脂肪酸，以及季戊四醇六酯和一种选自具有 5 至 18 个碳原子的脂肪酸、以及除酯类添加剂之外的酯类基础油，其中酯类添加剂的含量为冷冻机油组合物总量的 2 至 20%，且冷冻机油组合物在 40°C 时的运动粘度为 3 至 500 mm2/s。
• REFRIGERATION CYCLE DEVICE
  申请人：DAIKIN INDUSTRIES, LTD.

  公开号：EP3730569A1

  公开（公告）日：2020-10-28

  There is provided a refrigeration cycle apparatus in which good lubricity can be achieved when a refrigeration cycle is performed using a refrigerant having a sufficiently low GWP. The refrigeration cycle apparatus contains a refrigerating oil and a refrigerant composition containing a refrigerant containing trans-1,2-difluoroethylene (HFO-1132(E)), trifluoroethylene (HFO-1123), and 2,3,3,3-tetrafluoro-1-propene (R1234yf).

  本发明提供了一种制冷循环装置，当使用具有足够低全球升温潜能值的制冷剂进行制冷循环时，该装置可实现良好的润滑性。该制冷循环装置包含制冷油和制冷剂组合物，其中制冷剂组合物包含反式-1,2-二氟乙烯（HFO-1132(E)）、三氟乙烯（HFO-1123）和 2,3,3,3-四氟-1-丙烯（R1234yf）。