5-[1-(4-fluorophenyl)ethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 5-[1-(4-fluorophenyl)ethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione
• 英文别名: 5-[1-(4-Fluorophenyl)ethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione
• 化学式: C₁₄H₁₃FO₄
• 分子量: 264.253
• InChiKey: IZPRBHBSVWQVOE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  19
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  5-[1-(4-fluorophenyl)ethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione 、 dimethylalumino trimethylsilylacetylene 以 甲苯 为溶剂， 反应 16.0h， 以75%的产率得到5-(2-(4-fluorophenyl)-4-(trimethylsilyl)but-3-yn-2-yl)-2,2-dimethyl-1,3-dioxane-4,6-dione
  参考文献：
  名称：

  Expedient Synthesis of Complex γ-Butyrolactones from 5-(1-Arylalkylidene) Meldrum’s Acids via Sequential Conjugate Alkynylation/Ag(I)-Catalyzed Lactonization

  摘要：

  The conjugate alkynylation of alkylidene Meldrums acids with alkynylalanes and alkynyl Grignards allows for the formation of propargylic all-carbon quaternary stereocenters in high yields. Ag2CO3-catalyzed intramolecular cyclization of propargylic Meldrums acid derivatives offers a two-step entry into complex gamma-alkylidene butyrolactones containing an all-carbon quaternary center at the C-4 position.

  DOI：

  10.1021/ol502811j
• 作为产物：
  描述：

  丙二酸环(亚)异丙酯 、 4-氟苯乙酮 在 吡啶 、 四氯化钛 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 以61%的产率得到5-[1-(4-fluorophenyl)ethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione
  参考文献：
  名称：

  通过共轭加成亚烷基和茚亚基的Meldrum酸的不对称合成全碳苯甲酸季铵立体中心

  摘要：

  进行了系统的研究，概述了对二烷基锌试剂对5-（1-芳基亚烷基）和茚基亚烷基Meldrum酸的对映选择性1,4-加成。彻底探讨了亚烷基上存在的芳基和烷基的变化。1，4-加成显示与广泛的杂芳族和官能团的相容性，并且芳烃的取代模式影响对映体的选择，对位取代的芳基始终导致高对映选择性。还研究了有机锌试剂对偶联物添加效率和选择性的影响。确定了许多亚烷基Meldrum酸的固态构象，并将其与所观察到的与芳烃取代图案有关的对映选择性相关联。

  DOI：

  10.1021/jo901559d

文献信息

• Asymmetric Synthesis of All-Carbon Benzylic Quaternary Stereocenters via Conjugate Addition to Alkylidene and Indenylidene Meldrum’s Acids
  作者：Ashraf Wilsily、Eric Fillion

  DOI：10.1021/jo901559d

  日期：2009.11.20

  aryl group consistently leading to high enantioselectivities. The nature of the organozinc reagent on the efficiency and selectivity of the conjugate addition was also investigated. The solid-state conformation was determined for a number of alkylidene Meldrum’s acids and correlated with the observed enantioselectivity in relation to the arene pattern of substitution.

  进行了系统的研究，概述了对二烷基锌试剂对5-（1-芳基亚烷基）和茚基亚烷基Meldrum酸的对映选择性1,4-加成。彻底探讨了亚烷基上存在的芳基和烷基的变化。1，4-加成显示与广泛的杂芳族和官能团的相容性，并且芳烃的取代模式影响对映体的选择，对位取代的芳基始终导致高对映选择性。还研究了有机锌试剂对偶联物添加效率和选择性的影响。确定了许多亚烷基Meldrum酸的固态构象，并将其与所观察到的与芳烃取代图案有关的对映选择性相关联。
• Asymmetric Synthesis of All-Carbon Benzylic Quaternary Stereocenters via Cu-Catalyzed Conjugate Addition of Dialkylzinc Reagents to 5-(1-Arylalkylidene) Meldrum's Acids
  作者：Eric Fillion、Ashraf Wilsily

  DOI：10.1021/ja056692e

  日期：2006.3.1

  The asymmetric synthesis of all-carbon benzylic quaternary stereocenters has been successfully achieved through copper-catalyzed addition of dialkylzinc reagents to 5-(1-arylalkylidene) and 5-(dihydroindenylidene) Meldrum's acids in the presence of phosphoramidite ligand. The resulting benzyl-substituted Meldrum's acids and 1,1-disubstituted indanes were obtained in good yields and up to 99% ee. The significance of substituting the position para, meta, and ortho to the electrophilic benzylic center was highlighted. A benzyl Meldrum's acid product was further transformed to a 3,3-disubstituted 1-indanone and a beta,beta-disubstituted pentanoic acid.
• 10.15227/orgsyn092.0182
  作者：Beaton, Eric、Fillion, Eric

  DOI：10.15227/orgsyn092.0182

  日期：——
• Expedient Synthesis of Complex γ-Butyrolactones from 5-(1-Arylalkylidene) Meldrum’s Acids via Sequential Conjugate Alkynylation/Ag(I)-Catalyzed Lactonization
  作者：Siawash Ahmar、Eric Fillion

  DOI：10.1021/ol502811j

  日期：2014.11.7

  The conjugate alkynylation of alkylidene Meldrums acids with alkynylalanes and alkynyl Grignards allows for the formation of propargylic all-carbon quaternary stereocenters in high yields. Ag2CO3-catalyzed intramolecular cyclization of propargylic Meldrums acid derivatives offers a two-step entry into complex gamma-alkylidene butyrolactones containing an all-carbon quaternary center at the C-4 position.