5-[(3-chlorophenyl)methylene]-2,2-dimethyl-1,3-dioxane-4,6-dione | 15948-53-5

• 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-[(3-chlorophenyl)methylene]-2,2-dimethyl-1,3-dioxane-4,6-dione
• 英文别名: 5-(3-chlorobenzylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione；5-(3-chloro-benzylidene)-2,2-dimethyl-[1,3]dioxane-4,6-dione；3-Chlor-benzyliden-meldrumsaeure；5-[(3-chlorophenyl)methylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione
• CAS: 15948-53-5
• 化学式: C₁₃H₁₁ClO₄
• 分子量: 266.681
• InChiKey: ILXUXOYNLXQPTI-UHFFFAOYSA-N

物化性质

• 熔点：
  115-116 °C(Solv: methanol (67-56-1))
• 沸点：
  506.9±50.0 °C(Predicted)
• 密度：
  1.335±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  18
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.23
• 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：

  5-[(3-chlorophenyl)methylene]-2,2-dimethyl-1,3-dioxane-4,6-dione 在 sodium tetrahydroborate 作用下， 以 乙醇 为溶剂， 生成 5-(3-chlorobenzyl)-2,2-dimethyl-1,3-dioxane-4,6-dione
  参考文献：
  名称：

  One Pot Synthesis of Monoalkylated and Mixed, Dialkylated Meldrum's Acid Derivatives

  摘要：

  A simple one pot method, involving sequential Knoevenagel condensation of Meldrum's acid with aromatic aldehydes, conjugate reduction of ylidene Meldrum's acid using sodium borohydride followed by alkylation, to prepare mixed dialkylated derivatives of Meldrum's acid is described.

  DOI：

  10.1081/scc-120027234
• 作为产物：
  描述：

  5-(甲氧基甲烯基)-2,2-二甲基-1,3-二氧己环-4,6-二酮 、 (3-chlorophenyl)magnesium bromide 生成 5-[(3-chlorophenyl)methylene]-2,2-dimethyl-1,3-dioxane-4,6-dione
  参考文献：
  名称：

  Modular Synthesis of Tetrahydrofluorenones from 5-Alkylidene Meldrum's Acids

  摘要：

  The one-pot synthesis of tetrahydrofluorenones, the core 6-5-6 tricyclic structural motif found in norditerpenoid natural products, from alkylidene Meldrum's acids via thermal Diels-Alder/BF3 center dot OEt2-catalyzed Friedel-Crafts acylation reactions is described. A series of tetrahydrofluorenones was assembled in good yields, and the Diels-Alder/Friedel-Crafts acylation protocol allowed modification of the substitution within the rings.

  DOI：

  10.1021/jo0618876

文献信息

• Practical Asymmetric Conjugate Alkynylation of Meldrum’s Acid-Derived Acceptors: Access to Chiral β-Alkynyl Acids
  作者：Sheng Cui、Shawn D. Walker、Jacqueline C. S. Woo、Christopher J. Borths、Herschel Mukherjee、Maosheng J. Chen、Margaret M. Faul

  DOI：10.1021/ja909105s

  日期：2010.1.20

  The enantioselective conjugate addition of alkynyl nucleophiles has been a long-standing challenge in synthetic chemistry. This paper describes a highly practical asymmetric conjugate alkynylation of Meldrum's acid-derived acceptors using cinchonidine (<$100/kg) as the chiral mediator. The process provides practical access to chiral beta-alkynyl acids. Noteworthy attributes of the method are its broad

  炔基亲核试剂的对映选择性共轭加成一直是合成化学中长期存在的挑战。本文描述了使用辛可尼丁 (<$100/kg) 作为手性介质的 Meldrum 酸衍生受体的高度实用的不对称共轭炔基化。该过程提供了获得手性β-炔基酸的实际途径。该方法的值得注意的属性是其广泛的范围、高度的功能组兼容性和易于扩展。
• Palladium-Catalyzed Diastereo- and Enantioselective Formal [3 + 2]-Cycloadditions of Substituted Vinylcyclopropanes
  作者：Barry M. Trost、Patrick J. Morris、Simon J. Sprague

  DOI：10.1021/ja309003x

  日期：2012.10.24

  We describe a palladium-catalyzed diastereo- and enantioselective formal [3 + 2]-cycloaddition between substituted vinylcyclopropanes and electron-deficient olefins in the form of azlactone- and Meldrum's acid alkylidenes to give highly substituted cyclopentane products. By modulation of the electronic properties of the vinylcyclopropane and the electron-deficient olefin, high levels of stereoselectivity

  我们描述了钯催化的非对映选择性和对映选择性形式的 [3 + 2]-环加成反应，在取代的乙烯基环丙烷和缺电子烯烃之间以 azlactone-和 Meldrum 的酸亚烷基的形式发生，得到高度取代的环戊烷产品。通过调节乙烯基环丙烷和缺电子烯烃的电子特性，获得了高水平的立体选择性。由催化剂提供的远程立体诱导，远离由配体产生的手性口袋，被认为是调用 Curtin-Hammett 原理的新机制的结果。
• Synthesis of 2-aryl-1<i>H</i>-Benzimidazoles and 2-aryl-1<i>H</i>-perimidines Using Arylidene Meldrum's Acid as a Source of the Aryl Group and Oxidant
  作者：Hossein Mehrabi、Faezeh Najafian-Ashrafi、Zeinab Esfandiarpour、Reza Ranjbar-Karimi

  DOI：10.3184/174751918x15199196317528

  日期：2018.3

  Arylidene Meldrum's acid is employed as a source of the aryl group and oxidant for the synthesis of 2-aryl-1H–benzimidazoles by a condensation reaction with 1,2-phenylenediamine in refluxing ethanol with good to high yields. Arylidene Meldrum's acids were also used as a source of the aryl group and oxidant for the synthesis of 2-aryl-1H-perimidines by a condensation reaction with 1,8-diaminonaphthalene

  亚芳基 Meldrum 酸被用作芳基的来源和氧化剂，用于通过与 1,2-苯二胺在回流乙醇中的缩合反应合成 2-芳基-1H-苯并咪唑，收率良好至高。亚芳基 Meldrum 的酸也被用作芳基的来源和氧化剂，用于通过与 1,8-二氨基萘在回流乙醇中的缩合反应以高产率合成 2-芳基-1H-脒。
• Trapping of Oxonium Ylides with Michael Acceptors: Highly Diastereoselective Three-Component Reactions of Diazo Compounds with Alcohols and Benzylidene Meldrum’s Acids/4-Oxo-enoates
  作者：Liqing Jiang、Wenhao Hu、Xingchun Han、Minghua Gan、Huang Qiu、Jingjing Ji、Xia Zhang

  DOI：10.1055/s-0030-1260824

  日期：2011.7

  number of Michael acceptors via a 1,4-addition fashion has been investigated. Benzylidene Meldrum's acids and 4-oxo-enoates have been found to be matched components as suitable Michael acceptors for the transformation. Thus, Rh 2 (OAc) 4 -catalyzed three-component reactions of diazo compounds, alcohols, and benzylidene Meldrum's acids/4-oxo-enoates gave corresponding α-hydroxyesters in good yield with

  已经研究了通过 1,4-加成方式用许多迈克尔受体捕获氧鎓叶立德。已发现亚苄基 Meldrum 的酸和 4-氧代-烯酸酯是匹配的组分，可作为转化的合适迈克尔受体。因此，Rh 2 (OAc) 4 催化重氮化合物、醇和亚苄基 Meldrum 酸/4-氧代烯酸酯的三组分反应以良好的收率和高至极好的非对映选择性得到相应的 α-羟基酯。通过简单的程序将加成产物转化为 γ-丁内酯，证明了这种有效方法的合成效用。
• Synthesis of E and Z 1-amino-2-aryl(alkyl)-cyclopropanecarboxylic acids via meldrum derivatives
  作者：M.L. Izquierdo、I. Arenal、M. Bernabé、E. Fernández Alvarez

  DOI：10.1016/s0040-4020(01)83489-x

  日期：1985.1

  The reaction of 5-arylidene(alkylidene)-2,2-dimethyl-1,3-dioxane-4,6-diones (1) (Meldrum's acid derivatives) with dimethylsulfoxonium methylide gave 1- aryl(alkyl) - 6,6 - dimethyl - 4,8 - dioxo - 5,7 -dioxaspiro [2.5] octanes (2) which, on treatment with sodium methoxide or ammonium hydroxide, gave exclusively E-1-methoxy-carboyl-2-aryl-cyclopropanecarboxylic acids (4) or Z-1-carbamoyl-2-aryl(alk

  5-亚芳基（亚烷基）-2,2-二甲基-1,3-二恶烷-4,6-二酮（1）（Meldrum的酸衍生物）与二甲基s亚砜的甲基化反应生成1-芳基（烷基）-6,6-二甲基-4,8-​​二氧杂-5,7-二氧杂螺[2.5]辛烷（2），经甲醇钠或氢氧化铵处理后，仅得到E -1-甲氧基-羰基-2-芳基-环丙烷羧酸（4）或分别为Z -1-氨基甲酰基-2-芳基（烷基）-环丙烷甲酸（7）。在Curtius型反应条件下，化合物4产生Z-甲基1-异氰酸酯-2-芳基-环丙烷羧酸酯（5），而衍生物7用次溴酸盐处理，得到E - 1-甲氧基-羰基氨基-2-芳基（烷基）-环丙烷羧酸（8）。