2-(4-acetoxy-cyclopent-2-enyl)-malonic acid dimethyl ester | 443128-16-3

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: 2-(4-acetoxy-cyclopent-2-enyl)-malonic acid dimethyl ester
• 英文别名: dimethyl [(1R,4S)-4-acetoxycyclopent-2-enyl]malonate；cis-(1S,4R)-1-acetoxy-4-[bis(methoxycarbonyl)methyl]-2-cyclopentene；dimethyl (1-acetoxycyclopent-2-enyl)malonate；dimethyl 2-[(1R,4S)-4-acetyloxycyclopent-2-en-1-yl]propanedioate
• CAS: 443128-16-3
• 化学式: C₁₂H₁₆O₆
• 分子量: 256.255
• InChiKey: YYLAITZVMQJHPW-DTWKUNHWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  18
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.58
• 拓扑面积：
  78.9
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  2-(4-acetoxy-cyclopent-2-enyl)-malonic acid dimethyl ester 在 四(三苯基膦)钯 potassium carbonate 作用下， 以 四氢呋喃 为溶剂， 反应 12.0h， 生成 2-cyclopent-2-enylidene-malonic acid dimethyl ester
  参考文献：
  名称：

  Pd(0) catalyzed intramolecular alkylation: stereoselective synthesis of furan and isoxazoline-2-oxide analogs

  摘要：

  New optically pure isoxazoline-2-oxide and furan analogs have been synthesized using Pd(0) catalyzed intramolecular cyclizations. Starting from a meso-diol, optically pure compounds were prepared without utilizing chiral ligands at any stage of the synthesis. The stereochemical outcome of the product (> 99% ee) was influenced by desymmetrization catalyzed by Pseudomonas cepacia lipase and the stereoselective nature of the palladium catalyzed transformations. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2006.11.066
• 作为产物：
  描述：

  (1S,4R)-顺式-4-乙酰氧基-2-环戊烯-1-醇 在 四(三苯基膦)钯 4-二甲氨基吡啶 、 potassium carbonate 、 三苯基膦 作用下， 以 四氢呋喃 为溶剂， 反应 15.0h， 生成 2-(4-acetoxy-cyclopent-2-enyl)-malonic acid dimethyl ester
  参考文献：
  名称：

  Pd(0) catalyzed intramolecular alkylation: stereoselective synthesis of furan and isoxazoline-2-oxide analogs

  摘要：

  New optically pure isoxazoline-2-oxide and furan analogs have been synthesized using Pd(0) catalyzed intramolecular cyclizations. Starting from a meso-diol, optically pure compounds were prepared without utilizing chiral ligands at any stage of the synthesis. The stereochemical outcome of the product (> 99% ee) was influenced by desymmetrization catalyzed by Pseudomonas cepacia lipase and the stereoselective nature of the palladium catalyzed transformations. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2006.11.066

文献信息

• Application of Chiral Mixed Phosphorus/Sulfur Ligands to Palladium-Catalyzed Allylic Substitutions
  作者：David A. Evans、Kevin R. Campos、Jason S. Tedrow、Forrest E. Michael、Michel R. Gagné

  DOI：10.1021/ja992543i

  日期：2000.8.23

  allylic substitution of cycloalkenyl acetates showed that 49g afforded the highest enantioselectivities (91−97% ee). Application of this methodology to heterocyclic substrates was developed as an efficient approach to the enantioselective synthesis of 3-substituted piperidines and dihydrothiopyrans. Models for asymmetric induction are discussed based on the absolute st...

  设计了一种合成一类混合磷/硫配体的模块化方法，以确定重要的配体结构特征，用于对映选择性钯催化的无环和环状烯丙基酯的烯丙基取代基。在硫、磷和配体骨架上的配体取代基进行系统变化后，发现配体 11k 在钯催化的 1,3-二苯基丙烯基乙酸酯与丙二酸二甲酯或苄胺的烯丙基取代中是最佳的，收率高，对映选择性极佳(95-98% ee)。钯催化的乙酸环烯基烯丙基取代的磷/硫混合配体的类似优化表明，49g 提供了最高的对映选择性（91-97% ee）。将该方法应用于杂环底物被开发为对映选择性合成 3-取代哌啶和二氢噻喃的有效方法。非对称归纳模型的讨论基于绝对标准...
• Asymmetric allylic alkylation of cycloalkenediol diacetates using a chiral phosphine ligand bearing a carboxyl group
  作者：Tatsuo Okauchi、Kouji Fujita、Tsuneyuki Ohtaguro、Satomi Ohshima、Toru Minami

  DOI：10.1016/s0957-4166(00)00080-x

  日期：2000.4

  Asymmetric induction in the allylic alkylation of cycloalkenediol diacetates was performed using a chiral alkylphosphine ligand bearing a carboxyl group, 3-(diphenylphosphino)butanoic acid. An increase in enantiomeric excess of the monoalkylated products of cis-cycloalkenediol diacetates was observed through a sequential asymmetric allylic alkylation–kinetic resolution process.

  使用带有羧基的手性烷基膦配体3-（二苯基膦基）丁酸在环烯二醇二乙酸酯的烯丙基烷基化中进行不对称诱导。通过顺序的不对称烯丙基烷基化-动力学拆分过程，观察到顺式-环烯二醇二乙酸酯单烷基化产物的对映体过量增加。
• Enantioselective Synthesis of Both Enantiomers of Dimethyl<i>cis</i>-(4-Acetoxycyclopent-2-enyl)malonate, Key Intermediates for Epijasmonate
  作者：Shinji TANIMORI、Yuko TSUJI、Mitsunori KIRIHATA

  DOI：10.1271/bbb.66.660

  日期：2002.1

  Both enantiomers (3 and 4) of dimethyl cis-(4-acetoxycyclopent-2-enyl)malonate (3), known intermediates for the synthesis of epijasmonate, were prepared in an enantio-enriched form from common starting material 2 based on desymmetrization of the meso-character by palladium-catalyzed asymmetric allylic alkylation.

  顺式-（4-乙酰氧基环戊-2-烯基）丙二酸二甲酯（3）的两种对映异构体（3和4），是合成表茉莉酸酯的已知中间体，是基于对苯二甲酰胺的去对称作用，由常见的起始原料2以对映体富集的形式制备的。钯催化的不对称烯丙基烷基化反应的介观特征。