3-acetyl-2-cyclopentenone | 27326-88-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3-acetyl-2-cyclopentenone
• 英文别名: 3-acetylcyclopent-2-enone；2-Cyclopenten-1-one, 3-acetyl-；3-acetylcyclopent-2-en-1-one
• CAS: 27326-88-1
• 化学式: C₇H₈O₂
• 分子量: 124.139
• InChiKey: DNWHNEMQSUQAQB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.1
• 重原子数：
  9
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.43
• 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：

  3-acetyl-2-cyclopentenone 在 C₂HF₃O₂*C₁₆H₁₈N₂O₂ 二氢吡啶 作用下， 以 乙醚 为溶剂， 反应 24.0h， 以82%的产率得到3-acetylcyclopentanone
  参考文献：
  名称：

  Hydride reduction of alpha, beta-unsaturated carbonyl compounds using chiral organic catalysts

  摘要：

  非金属手性有机催化剂被用于催化α，β-不饱和羰基化合物的1,4-氢化物还原。α，β-不饱和羰基化合物可以是醛或环酮，氢化物供体可以是二氢吡啶。该反应是对映选择性的，并且可以使用多种氢化物供体、催化剂和底物进行。该发明还提供了用于进行α，β-不饱和羰基化合物的1,4-氢化物加成的有效组合物。

  公开号：

  US20060161024A1
• 作为产物：
  描述：

  4-乙酰基-5-羰基己酸甲酯 在 dirhodium tetraacetate 、 氢氧化钾 、 草酰氯 、 盐酸羟胺 、 三乙胺 作用下， 以 甲醇 、 乙醚 、 二氯甲烷 、 水 为溶剂， 反应 41.0h， 生成 3-acetyl-2-cyclopentenone
  参考文献：
  名称：

  Metal-Catalyzed, Intramolecular Reactions of .alpha.-Diazo Ketones with Isoxazoles

  摘要：

  DOI：

  10.1021/jo00089a037

文献信息

• CATALYST FOR ASYMMETRIC HYDROGENATION AND METHOD FOR MANUFACTURING OPTICALLY ACTIVE CARBONYL COMPOUND USING THE SAME
  申请人：YAMADA Shinya

  公开号：US20120136176A1

  公开（公告）日：2012-05-31

  The present invention provides a catalyst used for manufacturing an optically active carbonyl compound by selective asymmetric hydrogenation of an α,β-unsaturated carbonyl compound, which is insoluble in a reaction mixture, and a method for manufacturing the corresponding optically active carbonyl compound. Particularly, the invention provides a catalyst for obtaining an optically active citronellal useful as a flavor or fragrance, by selective asymmetric hydrogenation of citral, geranial or neral. The invention relates to a catalyst for asymmetric hydrogenation of an α,β-unsaturated carbonyl compound, which comprises: a powder of at least one metal selected from metals belonging to Group 8 to Group 10 of the Periodic Table, or a metal-supported substance in which the at least one metal is supported on a support; an optically active peptide compound; and an acid, and also relates to a method for manufacturing an optically active carbonyl compound using the same.

  本发明提供了一种用于通过选择性不对称加氢α，β-不饱和羰基化合物制备光学活性羰基化合物的催化剂，该催化剂在反应混合物中不溶解，并提供了制备相应光学活性羰基化合物的方法。特别地，该发明提供了一种催化剂，通过选择性不对称加氢柠檬醛、香叶醛或柠檬醛制备出用作香料或芳香剂的光学活性香茅醛。该发明涉及一种用于不对称加氢α，β-不饱和羰基化合物的催化剂，包括：来自周期表第8至第10族金属中至少一种金属的粉末，或者至少一种金属负载物质，其中至少一种金属负载在一种载体上；一种光学活性肽化合物；和一种酸，还涉及使用该催化剂制备光学活性羰基化合物的方法。
• Allylic Oxidations Catalyzed by Dirhodium Catalysts under Aqueous Conditions
  申请人：Doyle Michael P.

  公开号：US20090093638A1

  公开（公告）日：2009-04-09

  The present invention relates to compositions and methods for achieving the efficient allylic oxidation of organic molecules, especially olefins and steroids, under aqueous conditions. The invention concerns the use of dirhodium (II,II) “paddlewheel complexes, and in particular, dirhodium carboximate and tert-butyl hydroperoxide as catalysts for the reaction. The use of aqueous conditions is particularly advantageous in the allylic oxidation of 7-keto steroids, which could not be effectively oxidized using anhydrous methods, and in extending allylic oxidation to enamides and enol ethers.

  本发明涉及在水相条件下实现有机分子的高效烯丙基氧化的组合物和方法，特别是烯烃和类固醇。该发明涉及使用二铑（II,II）“桨轮”配合物，特别是二铑羧酸酯和叔丁基过氧化氢作为催化剂进行反应。在烯丙基氧化7-酮类固醇中使用水相条件特别有优势，无法使用无水方法有效氧化，以及将烯丙基氧化扩展到烯酰胺和烯醇醚。
• CATALYST FOR ASYMMETRIC HYDROGENATION
  申请人：MAEDA Hironori

  公开号：US20100324338A1

  公开（公告）日：2010-12-23

  This invention aims at providing a catalyst for producing an optically active aldehyde or an optically active ketone, which is an optically active carbonyl compound, by carrying out selective asymmetric hydrogenation of an α,β-unsaturated carbonyl compound, particularly a catalyst which is insoluble in a reaction mixture for obtaining optically active citronellal which is useful as a flavor or fragrance, by carrying out selective asymmetric hydrogenation of citral, geranial or neral; and a method for producing a corresponding optically active carbonyl compound. The invention relates to a catalyst for asymmetric hydrogenation of an α,β-unsaturated carbonyl compound, which comprises a powder of at least one metal selected from metals belonging to Group 8 to Group 10 of the Periodic Table, or a metal-supported substance in which at least one metal selected from metals belonging to Group 8 to Group 10 of the Periodic Table is supported on a support, an optically active cyclic nitrogen-containing compound and an acid.

  这项发明旨在通过对α，β-不饱和羰基化合物进行选择性不对称加氢，特别是通过对柠檬醛、香叶醛或柠檬醛进行选择性不对称加氢，从而提供用作香料或香精的有用的光学活性香茅醛的催化剂，该香茅醛是一种光学活性羰基化合物；以及生产相应的光学活性羰基化合物的方法。该发明涉及一种用于不对称加氢α，β-不饱和羰基化合物的催化剂，其包括来自周期表第8至第10族金属中至少一种金属的粉末，或者至少一种来自周期表第8至第10族金属的金属负载物质，该金属负载在一种支撑物上，还包括光学活性的含氮环化合物和酸。
• Fluorous bispidine: a bifunctional reagent for copper-catalyzed oxidation and knoevenagel condensation reactions in water
  作者：Wei Jie Ang、Yong Sheng Chng、Yulin Lam

  DOI：10.1039/c5ra17093a

  日期：——

  Fluorous bispidine-type ligands have been developed to demonstrate its bifunctional property as a ligand and base in copper-catalyzed aerobic oxidation, the Knoevenagel condensation and tandem oxidation/condensation in water under mild conditions.

  氟亲和性双咪唑型配体已被开发用于展示其在铜催化的氧化反应、Knoevenagel缩合和水中温和条件下串联氧化/缩合反应中作为配体和碱的双功能性质。
• Synthesis of diverse β-quaternary ketones via palladium-catalyzed asymmetric conjugate addition of arylboronic acids to cyclic enones
  作者：Jeffrey C. Holder、Emmett D. Goodman、Kotaro Kikushima、Michele Gatti、Alexander N. Marziale、Brian M. Stoltz

  DOI：10.1016/j.tet.2014.11.048

  日期：2015.9

  The development and optimization of a palladium-catalyzed asymmetric conjugate addition of arylboronic acids to cyclic enone conjugate acceptors is described. These reactions employ air-stable and readily-available reagents in an operationally simple and robust transformation that yields β-quaternary ketones in high yields and enantioselectivities. Notably, the reaction itself is highly tolerant of

  描述了钯催化芳基硼酸与环烯酮共轭受体的不对称共轭加成的开发和优化。这些反应采用空气稳定且易于获得的试剂，通过操作简单且稳健的转化，以高产率和对映选择性产生 β-季酮。值得注意的是，反应本身对大气中的氧气和湿气具有高度耐受性，因此不需要使用干燥或脱氧溶剂、特别纯化的试剂或惰性气氛。烯酮的环大小和β-取代基变化很大，可以合成多种β-季酮。最近，NH 4 PF 6的使用进一步扩大了底物范围，包括含杂原子的芳基硼酸和β-酰基烯酮底物。