3,3-Difluoro-2-oxobutanoic acid

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: 3,3-Difluoro-2-oxobutanoic acid
• 英文别名: 3,3-difluoro-2-oxobutyric acid
• 化学式: C₄H₄F₂O₃
• mdl: MFCD19231231
• 分子量: 138.071
• InChiKey: IMPNZVQVPHFWLY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  9
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  54.4
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  Ethyl 3,3-difluoro-2-oxobutanoate 在 碳酸氢钠 作用下， 以 异丙醇 为溶剂， 生成 3,3-Difluoro-2-oxobutanoic acid 、 3,3-Difluoro-2-oxobutanoic acid hydrate
  参考文献：
  名称：

  Conversion of .alpha.-Keto Esters into .beta.,.beta.-Difluoro-.alpha.-keto Esters and Corresponding Acids: A Simple Route to a Novel Class of Serine Protease Inhibitors

  摘要：

  The preparation of a series of beta,beta-difluoro-alpha-keto esters and corresponding acids RCF(2)COCO(2)R' (R = Me, Et; i-Pr, Bn, and Ph; R' = Et and H), designed as potential inhibitors of serine proteases, is described. The standard procedure developed consists in the initial formation of an alpha,alpha-difluoro ester from an alpha-keto ester, followed by a simple four-step sequence involving the synthesis of hemiacetal, cyanohydrin, and alpha-hydroxy ester difluorinated intermediates. This method provides an easy route to beta,beta-difluoro-alpha-keto esters and corresponding acids, via ''formal'' insertion of a difluoromethylene group between the R substituent and the alpha-carbonyl group of a generic alpha-keto ester.

  DOI：

  10.1021/jo00121a040

文献信息

• Studies of 1-Amino-2,2-difluorocyclopropane-1-carboxylic Acid: Mechanism of Decomposition and Inhibition of 1-Aminocyclopropane-1-carboxylic Acid Deaminase
  作者：Cheng-Hao Liu、Shao-An Wang、Mark W. Ruszczycky、Huawei Chen、Keqiang Li、Kazuo Murakami、Hung-wen Liu

  DOI：10.1021/acs.orglett.5b01570

  日期：2015.7.2

  1-Amino-2,2-difluorocyclopropane-1-carboxylic acid (DFACC) is of interest in the study of 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase due to the increased reactivity of its cyclopropyl functionality. It is shown that DFACC is unstable under near-physiological conditions where it primarily decomposes via specific-base catalysis to 3-fluoro-2-oxobut-3-enoic acid with a rate constant of 0.18 +/- 0.01 min(-1). Upon incubation with ACC deaminase, DFACC is found to be a slow-dissociating inhibitor of ACC deaminase with submicromolar affinity.
• Conversion of .alpha.-Keto Esters into .beta.,.beta.-Difluoro-.alpha.-keto Esters and Corresponding Acids: A Simple Route to a Novel Class of Serine Protease Inhibitors
  作者：Melchiorre F. Parisi、Giuseppe Gattuso、Anna Notti、Francisco M. Raymo、Robert H. Abeles

  DOI：10.1021/jo00121a040

  日期：1995.8

  The preparation of a series of beta,beta-difluoro-alpha-keto esters and corresponding acids RCF(2)COCO(2)R' (R = Me, Et; i-Pr, Bn, and Ph; R' = Et and H), designed as potential inhibitors of serine proteases, is described. The standard procedure developed consists in the initial formation of an alpha,alpha-difluoro ester from an alpha-keto ester, followed by a simple four-step sequence involving the synthesis of hemiacetal, cyanohydrin, and alpha-hydroxy ester difluorinated intermediates. This method provides an easy route to beta,beta-difluoro-alpha-keto esters and corresponding acids, via ''formal'' insertion of a difluoromethylene group between the R substituent and the alpha-carbonyl group of a generic alpha-keto ester.