2-甲基-2-(1-亚甲基丁基)丙二酸二乙酯 | 863881-53-2

• 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-甲基-2-(1-亚甲基丁基)丙二酸二乙酯
• 英文名称: 2-methyl-2-(1-methylenebutyl)malonic acid diethyl ester
• 英文别名: Diethyl 2-methyl-2-pent-1-en-2-ylpropanedioate
• CAS: 863881-53-2
• 化学式: C₁₃H₂₂O₄
• 分子量: 242.315
• InChiKey: JCITULGXZSPWCQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  17
• 可旋转键数：
  9
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.69
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  2-甲基-2-(1-亚甲基丁基)丙二酸二乙酯 在 palladium on activated charcoal 、 氢气 作用下， 生成 methyl-(1-methyl-butyl)-malonic acid diethyl ester
  参考文献：
  名称：

  The efficient synthesis of (3R,4R,5R)-3-amino-4,5-dimethyl-octanoic acid, a chiral β-amino acid with potent affinity for the α2δ protein

  摘要：

  A chiral beta-amino acid containing three contiguous chiral centers was synthesized efficiently in 11 steps, employing enantio-enriched beta-ketoester as a key intermediate, via stereoselective catalytic hydrogenation of the corresponding enamide. Stereoselective 1,4-addition of a methyl group and protonation were key to the preparation of the desired acid 12. Mild and efficient reaction conditions were applied to the enamine formation and protection to avoid epimerization at C-4 of compounds 13 and 14. The final compound was found to display potent affinity for the alpha(2)delta-protein that is a recognized drug target for the treatment of a variety of diseases. (C) 2009 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2008.12.111
• 作为产物：
  描述：

  1-戊炔 、 甲基丙二酸二乙酯 在 In(OSO₂CF₃)3 作用下， 以 甲苯 为溶剂， 以98%的产率得到2-甲基-2-(1-亚甲基丁基)丙二酸二乙酯
  参考文献：
  名称：

  铟（III）介导的马尔可夫尼可夫将丙二酸酯和β-酮酸酯添加到末端炔烃中，并形成Knoevenagel缩合产物

  摘要：

  由三氟甲磺酸铟（III）介导的活性亚甲基化合物加成至末端炔烃已被扩展为使用丙二酸酯和低沸点末端炔烃以形成马尔可夫尼可夫加成产物。还发现氯化铟（III）和溴化铟（III）是有效的催化剂。当反应涉及简单的丙二酸酯或β-酮酸酯时，分离出Knoevenagel缩合产物。

  DOI：

  10.1016/j.tet.2005.05.065

文献信息

• Indium (III) mediated Markovnikov addition of malonates and β-ketoesters to terminal alkynes and the formation of Knoevenagel condensation products
  作者：Ji Zhang、Peter G. Blazecka、Paul Angell、Mark Lovdahl、Timothy T. Curran

  DOI：10.1016/j.tet.2005.05.065

  日期：2005.8

  active methylene compounds to terminal alkynes has been expanded to use malonates and low boiling terminal alkynes to form the Markovnikov addition products. Indium(III) chloride and indium(III) bromide were also found to be efficient catalysts. Knoevenagel condensation products were isolated when reactions involved a simple malonate or β-ketoester.

  由三氟甲磺酸铟（III）介导的活性亚甲基化合物加成至末端炔烃已被扩展为使用丙二酸酯和低沸点末端炔烃以形成马尔可夫尼可夫加成产物。还发现氯化铟（III）和溴化铟（III）是有效的催化剂。当反应涉及简单的丙二酸酯或β-酮酸酯时，分离出Knoevenagel缩合产物。
• [EN] PREPARATION OF BETA-AMINO ACID PRECURSORS VIA INDIUM (III) MEDIATED MARKOVNIKOV ADDITION AND KNOEVENAGEL CONDENSATION<br/>[FR] PREPARATION DE PRECURSEURS DE BETA-AMINOACIDE PAR ADDITION DE MARKOVNIKOV ET CONDENSATION DE KNOEVENAGEL A MEDIATION ASSUREE PAR DE L'INDIUM (III)
  申请人：WARNER LAMBERT CO

  公开号：WO2006100606A2

  公开（公告）日：2006-09-28

  (EN) Disclosed are materials and methods for preparing precursors of optically active &bgr;-amino acids, which bind to the alpha-2-delta (&agr;2&dgr;) subunit of a calcium channel and are useful for treating pain, fibromyalgia, and a variety of psychiatric and sleep disorders. The method includes reacting a malonate derivative with a terminal alkyne in the presence of an In(III) catalyst.(FR) L'invention concerne des matériaux et des procédés pour la préparation de précurseurs de ß-aminoacides optiquement actifs, qui se lient à la sous-unité alpha-2-delta (a2d) d'un canal calcique et qui sont utiles pour le traitement de la douleur, de la fibromyalgie, et de divers troubles psychiatriques ou du sommeil. Le procédé de l'invention consiste à faire réagir un dérivé de malonate avec un alcyne terminal en présence d'un catalyseur In(III).
• The efficient synthesis of (3R,4R,5R)-3-amino-4,5-dimethyl-octanoic acid, a chiral β-amino acid with potent affinity for the α2δ protein
  作者：Ji Zhang、Peter G. Blazecka、Derek A. Pflum、Joseph Bozelak、Derek Vrieze、Norman L. Colbry、Garrett Hoge、David C. Boyles、Brian Samas、Timothy T. Curran、Augustine T. Osuma、Paul Johnson、Suzanne Kesten、Jacob B. Schwarz、Annise Goodman、Mark Plummer、Anne Akin、Yun Huang、Michael Lovdahl、Andrew J. Thorpe

  DOI：10.1016/j.tetlet.2008.12.111

  日期：2009.3

  A chiral beta-amino acid containing three contiguous chiral centers was synthesized efficiently in 11 steps, employing enantio-enriched beta-ketoester as a key intermediate, via stereoselective catalytic hydrogenation of the corresponding enamide. Stereoselective 1,4-addition of a methyl group and protonation were key to the preparation of the desired acid 12. Mild and efficient reaction conditions were applied to the enamine formation and protection to avoid epimerization at C-4 of compounds 13 and 14. The final compound was found to display potent affinity for the alpha(2)delta-protein that is a recognized drug target for the treatment of a variety of diseases. (C) 2009 Elsevier Ltd. All rights reserved.