2,2-二甲基庚酸 | 14250-73-8

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 中文名称: 2,2-二甲基庚酸
• 英文名称: 2,2-dimethylheptanoic acid
• 英文别名: dimethylheptanoic acid；neooctanoic acid；2,2-dimethyl-heptanoic acid；2,2-Dimethyl-heptansaeure；α.α-Dimethyl-oenanthsaeure；α,α-Dimethylheptansaeure
• CAS: 14250-73-8
• 化学式: C₉H₁₈O₂
• mdl: MFCD00128234
• 分子量: 158.241
• InChiKey: QRMMMWOSHHVOCJ-UHFFFAOYSA-N

物化性质

• 沸点：
  246.47°C (estimate)
• 密度：
  0.9113 (rough estimate)

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  11
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.888
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

安全信息

• 海关编码：
  2915900090

反应信息

• 作为反应物：
  描述：

  2,2-二甲基庚酸 在 二苯基膦叠氮化物 、 三乙胺 作用下， 以 甲苯 为溶剂， 反应 14.0h， 生成 2-Isocyanato-2-methylheptane
  参考文献：
  名称：

  钯催化未活化的γ-亚甲基C（sp3）的芳基化作用？H和δ-C ？含恶唑啉-羧酸盐助剂的H键

  摘要：

  未活化的γ的钯-催化的芳基化-亚甲基C（SP 3） H和远程δ-C  H键通过使用恶唑啉甲酸甲酯定向基团已被开发。在广泛的底物范围和对官能团（即卤素，硝基，氰基，醚，三氟甲基，胺和酯）的高耐受性下发生丙烯酸化。可以在酸性条件下除去恶唑啉型助剂。

  DOI：

  10.1002/chem.201502621
• 作为产物：
  描述：

  1-碘戊烷 在 甲醇 、 sodium hydroxide 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 为溶剂， 反应 1.0h， 生成 2,2-二甲基庚酸
  参考文献：
  名称：

  铜催化未活化C（sp3）的位点选择性分子内酰胺化反应？H债券

  摘要：

  脂肪族酰胺的分子内酰胺化脱氢，由双齿配体定向，使用铜-催化的SP被开发3 Ç  H键官能化方法。该反应有利于主要的C  β甲基团与未活化的亚甲基] C H键 H键。此外，用于激活SP的偏好3 Ç  β甲基基团的H键，经由五元环中间，在所述芳族SP 2个ç  H键在环金属化步骤中也观察到。此外，SP 3个Ç 未活化二次属的H键3 Ç 通过使环碳原子优先于线性碳原子，可以使H键官能化。

  DOI：

  10.1002/anie.201311263
• 作为试剂：
  描述：

  3-氟吡啶 、 碘苯 在 2,2-二甲基庚酸 、 palladium diacetate 、 caesium carbonate 、 silver carbonate 、 正丁基二(1-金刚烷基)膦 作用下， 以 甲苯 为溶剂， 反应 22.0h， 以69%的产率得到3-fluoro-4-phenylpyridine
  参考文献：
  名称：

  C–H Arylation of Pyridines: High Regioselectivity as a Consequence of the Electronic Character of C–H Bonds and Heteroarene Ring

  摘要：

  We report a new catalytic protocol for highly selective C-H arylation of pyridines containing common and synthetically versatile electron-withdrawing substituents (NO(2), CN, F and Cl). The new protocol expands the scope of catalytic azine functionalization as the excellent regioselectivity at the 3- and 4-positions well complements the existing methods for C-H arylation and Ir-catalyzed borylation, as well as classical functionalization of pyridines. Another important feature of the new method is its flexibility to adapt to challenging substrates by a simple modification of the carboxylic acid ligand or the use of silver salts. The regioselectivity can be rationalized on the basis of the key electronic effects (repulsion between the nitrogen lone pair and polarized C-Pd bond at C2-/C6-positions and acidity of the C-H bond) in combination with steric effects (sensitivity to bulky substituents).

  DOI：

  10.1021/ja206022p

文献信息

• Copolymers Based on N-Vinylpyrrolidone and Branched Aliphatic Carbonxylic Acids, and Their Use as Solubilizers
  申请人：Angel Maximilian

  公开号：US20080200564A1

  公开（公告）日：2008-08-21

  Copolymers comprising: (a) 60 to 99% by weight of at least one monomer selected from the group consisting of N-vinyllactams, N-vinylamides, and mixtures thereof; (1) 1 to 40% by weight of at least one monomer selected from the group consisting of vinyl esters of aliphatic branched C 8 -C 30 -carboxylic acids; (c) 0 to 30% by weight of vinyl acetate; and (d) 0 to 39% by weight of at least one additional free-radically copolymnerizable monomer; wherein the % by weight content of components (a), (b), (c) and (d) totals 100%, and with the proviso that the total amount of component (b) and component (c) combined is 1 to 40% by weight based on the copolymer, are described along with methods of using such copolymers to solubilize substances which are insoluble in water, substances which are only sparingly soluble in water, and combinations thereof.

  共聚物包含：（a）60至99重量百分比的至少一种单体，选自N-乙烯基内酰胺、N-乙烯酰胺和它们的混合物；（b）1至40重量百分比的至少一种单体，选自支链的C8-C30脂肪族羧酸的乙烯酯；（c）0至30重量百分比的乙酸乙烯酯；和（d）0至39重量百分比的至少一种额外的自由基共聚单体；其中，组分（a）、（b）、（c）和（d）的重量百分比总和为100%，并且有条件规定组分（b）和组分（c）的总和基于共聚物为1至40重量百分比。还描述了使用这样的共聚物来增溶水不溶性物质、水微溶性物质以及它们的组合的方法。
• [EN] METHOD FOR PREPARING ORGANIC PEROXIDES ON SITE<br/>[FR] METHODE DE PREPARATION DE PEROXYDES ORGANIQUES SUR PLACE
  申请人：AKZO NOBEL NV

  公开号：WO2005075419A1

  公开（公告）日：2005-08-18

  The present invention relates to a process for preparing an organic peroxide and the subsequent use thereof in a (co)polymerization reaction, wherein the process comprises the steps (a), b1 (or b2), (c), (d), and (e), said steps being: (a) the reaction of chlorine with carbon monoxide, (b1) the reaction of phosgene formed in step (a) with one or more alcohols in order to prepare chloroformate, (b2) the reaction of phosgene formed in step (a) with one or more organic acids to prepare acid chloride, optionally in the presence of a catalyst suitable to effect the reaction of phosgene with said one or more organic acids, (c) the reaction of chloroformate, acid chloride, or mixture thereof with (in)organic hydroperoxide and base in an aqueous environment, (d) the transfer of organic peroxide formed in step (c) to a polymerization vessel, and (e) the (co)polymerization of monomer in the polymerization vessel in the presence of one or more organic peroxides transferred in step (d), wherein all of steps (a)-(e) are conducted at one site.

  本发明涉及一种用于制备有机过氧化物并在随后的(共)聚合反应中使用该过氧化物的方法，其中所述过程包括步骤(a)，b1(或b2)，(c)，(d)和(e)，这些步骤为：(a)氯与一氧化碳的反应，(b1)将步骤(a)中形成的光气与一种或多种醇反应以制备氯甲酸甲酯，(b2)将步骤(a)中形成的光气与一种或多种有机酸反应以制备酰氯，可选地在存在适合促进光气与所述一种或多种有机酸反应的催化剂的情况下进行，(c)将氯甲酸甲酯、酰氯或其混合物与(无机)有机过氧化氢和碱在水环境中反应，(d)将步骤(c)中形成的有机过氧化物转移到聚合釜中，以及(e)在聚合釜中，在步骤(d)转移的一种或多种有机过氧化物存在下，对单体进行(共)聚合，其中步骤(a)-(e)都在同一地点进行。
• Copper(II)-mediated intermolecular amination of inert C(sp3)H bonds with simple alkylamines to construct α,α-disubstituted β-amino acid derivatives
  作者：Chunxia Wang、Yudong Yang

  DOI：10.1016/j.tetlet.2017.01.079

  日期：2017.3

  Disclosed herein is a copper(II)-mediated chelation-assisted intermolecular amination of inert C(sp3)H bonds using simple alkylamines as the amino source. A straightforward and step-economic alternative to α,α-disubstituted β-amino acid derivatives is provided consequently. This reaction features good functional group tolerance and relatively broad substrate scope. Furthermore, a coupling product between

  本文公开了使用简单烷基胺作为氨基源的铜（II）介导的惰性C（sp 3）H键的螯合分子间胺化反应。因此，提供了α，α-二取代的β-氨基酸衍生物的直接且经济的步骤。该反应具有良好的官能团耐受性和相对较宽的底物范围。此外，吗啉和自由基抑制剂的2,6-二-之间的偶联产物叔丁基- p甲酚（BHT）分离，表明单电子转移（SET）进程可能在这一转变有关。
• A facile method for synthesis of three carbon-homologated carboxylic acid by regioselective ring-opening of β-propiolactones with organocopper reagents
  作者：Masatoshi Kawashima、Toshio Sato、Tamotsu Fujisawa

  DOI：10.1016/0040-4020(89)80068-7

  日期：——

  β-carbon-oxygen fission to give 3-substituted propionic acids. Among these three kinds of organocopper reagents, diorganocuprate, especially halomagnesium cuprate gave the highest yields of the acids, which was remarkably observed in the ring-opening of sterically hindered β-propiolactones such as β-methyl- and α,β -dimethyl-β-propiolactones and also in the reactions using the organocopper reagents with vinyl and

  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。
• Process for Preparing Vinyl Carboxylates
  申请人：Staffel Wolfgang

  公开号：US20080308765A1

  公开（公告）日：2008-12-18

  The present invention relates to a process for preparing vinyl carboxylates, wherein a carboxylic acid is reacted with an alkyne compound in the presence of a catalyst which is selected from carbonyl complexes, halides and oxides of rhenium, of manganese, of tungsten, of molybdenum, of chromium and of iron and rhenium metal at a temperature of ≦300° C. The process gives the desired vinyl esters with high yield.

  本发明涉及一种制备乙烯羧酸酯的方法，其中在选择自钨、钼、铬、铁和铼的羰基配合物、卤化物和氧化物作为催化剂的情况下，将羧酸与炔烃化合物在温度≦300°C下反应。该过程以高产率给出所需的乙烯酯。