4-乙基-庚烷-3,5-二酮 | 55552-65-3

• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 4-乙基-庚烷-3,5-二酮
• 英文名称: 4-ethyl-heptane-3,5-dione
• 英文别名: Aethyl-dipropionyl-methan；4-Aethyl-heptan-3,5-dion；4-ethylhepta-3,5-dione；4-Ethylheptane-3,5-dione
• CAS: 55552-65-3
• 化学式: C₉H₁₆O₂
• 分子量: 156.225
• InChiKey: UXXDYVFIENEKGV-UHFFFAOYSA-N

物化性质

• 沸点：
  202-203 °C(Press: 744 Torr)
• 密度：
  0.909±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  11
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.78
• 拓扑面积：
  34.1
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  4-乙基-庚烷-3,5-二酮 在 sodium hydroxide 作用下， 生成 3-己酮
  参考文献：
  名称：

  Morgan; Drew, Journal of the Chemical Society, 1924, vol. 125, p. 751

  摘要：

  DOI：
• 作为产物：
  描述：

  乙基丙二酰二氯 以 二氯甲烷 为溶剂， 生成 4-乙基-庚烷-3,5-二酮
  参考文献：
  名称：

  Reinheckel,H.; Sonnek,G., Zeitschrift fur Chemie, 1975, vol. 15, p. 50 - 51

  摘要：

  DOI：

文献信息

• 1-arylpyrazoles, composition containing them, and herbicidal method of
  申请人：Hokko Chemical Industry Co., Ltd.

  公开号：US04752326A1

  公开（公告）日：1988-06-21

  As compounds is provided a pyrazole derivative of the formula ##STR1## wherein R.sub.1a, R.sub.1b and R.sub.1c are each a hydrogen atom, a halogen atom, a nitro group, an amino group, a (lower) alkyl group, a halo-(lower)alkyl group, a(lower)alkenyl group, a (lower)alkynyl group, a (lower)alkylcarbonylamino group, a (lower)alkoxycarbonylamino group, a mono-(lower) alkylaminocarbonylamino group or a di-(lower)alkylaminocarbonylamino group; R.sub.2 is a hydrogen atom, a (lower)alkyl group, a (lower)alkenyl group, a (lower)alkynyl group, a (lower) alkoxy(lower)alkyl group, a (lower)alkylthio(lower)alkyl group, a (lower)alkylcarbonyl(lowr)alkyl group, a (lower) alkoxycarbonyl(lower)alkyl group, a (lower)alkylthiocarbonyl(lower)alkyl group, a cyano(lower)alkyl group, a (lower)alkylsulfonyl group, phenylsulfonyl group, a halogen-substituted phenylsulfonyl group or a (lower) alkyl-substituted phenylsulfonyl group, and X and Y are the same or different and each are a halogen atom. The pyrazoles are useful as herbicidal agent and may be produced by a variety of processes.

  提供的化合物是公式##STR1##中的吡唑衍生物，其中R.sub.1a、R.sub.1b和R.sub.1c分别是氢原子、卤素原子、硝基、氨基、(较低)烷基、卤代(较低)烷基、(较低)烯基、(较低)炔基、(较低)烷基羰基氨基、(较低)烷氧羰基氨基、单(较低)烷基氨基羰基氨基或双(较低)烷基氨基羰基氨基；R.sub.2是氢原子、(较低)烷基、(较低)烯基、(较低)炔基、(较低)烷氧基(较低)烷基、(较低)烷硫基(较低)烷基、(较低)烷基羰基(较低)烷基、(较低)烷氧羰基(较低)烷基、(较低)烷硫羰基(较低)烷基、氰基(较低)烷基、(较低)烷基磺酰基、苯基磺酰基、卤代苯基磺酰基或(较低)烷基取代的苯基磺酰基，X和Y相同或不同，且各自是卤素原子。这些吡唑化合物可用作除草剂，并可通过各种工艺生产。
• Chemoenzymatic Dynamic Kinetic Asymmetric Transformations of β‐Hydroxyketones
  作者：Simon Hilker、Daniels Posevins、C. Rikard Unelius、Jan‐E. Bäckvall

  DOI：10.1002/chem.202102683

  日期：2021.11.11

  one-pot procedure to achieve efficient DYKAT of α-substituted β-hydroxyketones. This newly developed protocol offers straightforward access to enantiomerically pure and diastereomerically enriched β-oxoacetates in high yields by employing a ruthenium-based racemization catalyst for efficient racemization-epimerization of substrates via formation of non-chiral 1,3-diketone intermediates.

  将钌和酶催化结合在一锅法中，实现 α-取代 β-羟基酮的高效 DYKAT。这种新开发的方案通过采用钌基外消旋催化剂，通过形成非手性 1,3-二酮中间体，实现底物的高效外消旋差向异构化，从而以高产率直接获得对映体纯和非对映体富集的 β-氧代乙酸酯。
• Polyamide acid composition for preparing polyimide and process for preparing polyimide from the same
  申请人：KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA

  公开号：EP0083690A1

  公开（公告）日：1983-07-20

  A polyamide acid composition for preparing a polyimide which can extend the pot life of the composition comprising a solution of a polyamide acid in an organic solvent, the polyamide acid being a precursor of the polyimide, a dehydrating agent, a catalyst and a pot life extending agent which can lower a rate of conversion of the polyamide acid to the plyimide, and the process for preparing the polyimide from said polyamide acid composition. According to the present invention the pot life can be extremely extended to give the composition an enough flowability for a long time without reducing the excellent properties such as a heat resistance and an electric insulation of the obtained polyimide.

  一种用于制备聚酰亚胺的聚酰胺酸组合物，可延长组合物的固化寿命，该组合物包括聚酰胺酸在有机溶剂中的溶液（聚酰胺酸是聚酰亚胺的前体）、脱水剂、催化剂和可降低聚酰胺酸转化为聚酰亚胺的速率的固化寿命延长剂，以及用上述聚酰胺酸组合物制备聚酰亚胺的工艺。根据本发明，可以极大地延长聚酰亚胺的罐装寿命，使该组合物具有足够长的流动性，而不会降低所得聚酰亚胺的优异性能，如耐热性和电绝缘性。
• Method of preparing a polyamide acid composition for preparing polyimide
  申请人：KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA

  公开号：EP0114059A2

  公开（公告）日：1984-07-25

  A polyamide acid composition for preparing a polyimide which is improved in the stability in a form of solution and can extend the pot life of the composition comprising a solution of a polyamide acid in an organic solvent, the polyamide acid being a precursor of the polyimide, and an N-substituted heterocyclic compound as a chemical treating agent which can lower a rate of conversion of the polyamide acid to the polyimide. The pot life can be extremely extended to give the composition an enough flowability for a long time without reducing the excellent properties such as a heat resistance of the obtained polyimide.

  一种用于制备聚酰亚胺的聚酰胺酸组合物，该组合物在溶液形式下的稳定性得到改善，并可延长其罐装寿命，该组合物包括聚酰胺酸在有机溶剂中的溶液，聚酰胺酸是聚酰亚胺的前体，以及一种 N-取代杂环化合物作为化学处理剂，可降低聚酰胺酸转化为聚酰亚胺的速率。可以极大地延长罐装寿命，使组合物在长时间内具有足够的流动性，而不会降低所获得的聚酰亚胺的优异性能，如耐热性。
• New pyrazole derivatives, their production and uses
  申请人：HOKKO CHEMICAL INDUSTRY CO., LTD

  公开号：EP0202169A1

  公开（公告）日：1986-11-20

  As new compounds is provided a pyrazole derivative of the formula wherein R1a, R1b and R1c are each a hydrogen atom, a halogen atom, a nitro group, an amino group, a (lower) alkyl group, a halo-(lower)alkyl group, a (lower)alkenyl group, a (lower)alkynyl group, a (lower)alkylcarbonylamino group, a (lower)alkoxycarbonylamino group, a mono-(lower) alkylaminocarbonylamino group or a di-(lower)alkylaminocarbonylamino group; R2 is a hydrogen atom, a (lower)alkyl group, a (lower)alkenyl group, a (lower)alkynyl group, a (lower) alkoxy(lower)-alkyl group; a (lower)alkylthio(lower)alkyl group, a (lower)alkylcarbonyl(lower)alkyl group, a (lower) alkoxycarbonyl(lower)alkyl group, a (lower)alkylthiocarbonyl(lower) alkyl group, a cyano(lower)alkyl group, a (lower)alkylsulfonyl group, phenylsulfonyl group, a halogen-substituted phenylsulfonyl group or a (lower)alkyl-substituted phenylsulfonyl group, and X and Y are the same or different and each are a halogen atom. The pyrazoles are useful as herbicidal agentand may be produced by a variety of processes.

  作为新化合物，提供了一种吡唑衍生物，其式如下 其中 R1a、R1b 和 R1c 各为氢原子、卤素原子、硝基、氨基、（低级）烷基、卤代（低级）烷基、（低级）烯基、（低级）炔基、（低级）烷基羰基氨基、（低级）烷氧基羰基氨基、单（低级）烷基氨基羰基氨基或二（低级）烷基氨基羰基氨基； R2 是氢原子、(低级)烷基、(低级)烯基、(低级)炔基、(低级)烷氧基(低级)烷基；(低级)烷硫基（低级）烷基、(低级)烷羰基（低级）烷基、(低级)烷氧羰基（低级）烷基、(低级)烷硫基（低级）烷基、氰基（低级）烷基、(低级)烷磺酰基、苯磺酰基、卤素取代的苯磺酰基或(低级)烷基取代的苯磺酰基，以及 X 和 Y 相同或不同，且各自为卤素原子。吡唑可用作除草剂，并可通过多种工艺生产。