methyl 2-methylene-1-propionylcyclopentane-1-carboxylate | 877776-37-9

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 酮酸及其衍生物
• 英文名称: methyl 2-methylene-1-propionylcyclopentane-1-carboxylate
• 英文别名: 2-methylene-1-propionylcyclopentanecarboxylic acid methyl ester；1-propionyl-2-methylene-cyclopentanecarboxylic acid methyl ester；methyl 2-methylidene-1-propanoylcyclopentane-1-carboxylate
• CAS: 877776-37-9
• 化学式: C₁₁H₁₆O₃
• 分子量: 196.246
• InChiKey: IGFCVNWFUPPHRG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  14
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.64
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  methyl 2-methylene-1-propionylcyclopentane-1-carboxylate 在 间氯过氧苯甲酸 作用下， 以 二氯甲烷 为溶剂， 反应 3.0h， 以97.4%的产率得到methyl 4-propionyl-1-oxaspiro[2.4]heptane-4-carboxylate
  参考文献：
  名称：

  Synthesis and Structure of Hydroxyl Acids of General Structure 7,7-Alkenyl/alkynyl-5-hydroxymethyl-6-oxabicyclo[3.2.1]octane- 1-carboxylic Acid

  摘要：

  [Graphics]The open-ended hollow tubular structure formed by inclusion of water molecules in the packing of the hydroxyl acid 1 (R-1 = CH2OH, R-2 = ethyl groups) led to the synthesis and structural study of their unsaturated analogues. In this article we report on a general and practical large-scale synthesis of hydroxyl acids that possess alkenyl and alkynyl appendages. Substitution of the ethyl groups in I with unsaturated two-carbon appendages has a different effect on the molecular structure and on the hydrogen-bonding pattern. No variation has been induced by Substitution of only one ethyl group with a vinyl one, although the substitution of both ethyl groups with vinyl or acetylene appendages has the greatest effect on the molecular structure and results in different hydrogen-bonding motifs.

  DOI：

  10.1021/jo052237p
• 作为产物：
  描述：

  5-氯戊炔 在 copper(l) iodide 、 potassium tert-butylate 、 sodium hydride 、 potassium iodide 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 反应 36.0h， 生成 methyl 2-methylene-1-propionylcyclopentane-1-carboxylate
  参考文献：
  名称：

  Synthesis and Structure of Hydroxyl Acids of General Structure 7,7-Alkenyl/alkynyl-5-hydroxymethyl-6-oxabicyclo[3.2.1]octane- 1-carboxylic Acid

  摘要：

  [Graphics]The open-ended hollow tubular structure formed by inclusion of water molecules in the packing of the hydroxyl acid 1 (R-1 = CH2OH, R-2 = ethyl groups) led to the synthesis and structural study of their unsaturated analogues. In this article we report on a general and practical large-scale synthesis of hydroxyl acids that possess alkenyl and alkynyl appendages. Substitution of the ethyl groups in I with unsaturated two-carbon appendages has a different effect on the molecular structure and on the hydrogen-bonding pattern. No variation has been induced by Substitution of only one ethyl group with a vinyl one, although the substitution of both ethyl groups with vinyl or acetylene appendages has the greatest effect on the molecular structure and results in different hydrogen-bonding motifs.

  DOI：

  10.1021/jo052237p

文献信息

• Boronic acid catalyzed ene carbocyclization of acetylenic dicarbonyl compounds
  作者：Meiling Li、Ting Yang、Darren J. Dixon

  DOI：10.1039/b924899d

  日期：——

  The discovery and development of an efficient ene carbocyclization of 1,3-dicarbonyl compounds bearing pendent terminal alkyne substituents under 3-nitrobenzeneboronic acid catalysis is described. The reaction is efficient, easy to perform and general to a wide range of ketoester substrates.

  描述了在3-硝基苯硼酸催化下，带有悬垂的末端炔基取代基的1，3-二羰基化合物的有效烯碳环化的发现和发展。该反应是有效的，易于进行的并且通常适用于多种酮酸酯底物。
• 3,5-Bis(pentafluorosulfanyl)phenylboronic acid: A new organocatalyst for Conia-ene carbocyclization of 1,3-dicarbonyl compounds having terminal alkynes
  作者：Yu-Dong Yang、Xu Lu、Etsuko Tokunaga、Norio Shibata

  DOI：10.1016/j.jfluchem.2012.06.007

  日期：2012.11

  3,5-Bis(pentafluorosulfanyl)phenylboronic acid 1 was introduced as an efficient organocatalyst for Conia-ene carbocyclization of 1,3-dicarbonyl compounds having terminal alkynes. A variety of 2-alkynic 1,3-dicarbonyl compounds were smoothly converted to ene-carbocyclization products in moderate to excellent yields. Compared with the reported catalyst, 3-nitro phenylboronic acid, catalyst 1 is slightly better in a non-polar solvent such as toluene and Solkane(R) 365mfc (1,1,1,3,3-pentafluorobutane). These results indicate that the SF5 function can be a lipophilic and sterically demanding alternative to the NO2 group in catalyst design. (C) 2012 Elsevier B.V. All rights reserved.