Diethyl 2-(phenylmethoxymethylidene)propanedioate | 188760-98-7

• 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: Diethyl 2-(phenylmethoxymethylidene)propanedioate
• 英文别名: diethyl 2-(phenylmethoxymethylidene)propanedioate
• CAS: 188760-98-7
• 化学式: C₁₅H₁₈O₅
• 分子量: 278.305
• InChiKey: VYRADHFPCARITR-UHFFFAOYSA-N

物化性质

• 沸点：
  372.5±42.0 °C(Predicted)
• 密度：
  1.138±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  20
• 可旋转键数：
  9
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  61.8
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  Diethyl 2-(phenylmethoxymethylidene)propanedioate 在 lithium aluminium tetrahydride 、 sodium 作用下， 以 四氢呋喃 为溶剂， 反应 1.5h， 生成 3-hydroxy-2-hydroxymethylpropanal dibenzyl acetal
  参考文献：
  名称：

  Synthesis and lipase-catalyzed asymmetric acetylation of 3-hydroxy-2-hydroxymethylpropanal acetals

  摘要：

  Prochiral dialkylacetal derivatives of 3-hydroxy-2-hydroxymethylpropanal 6a-e were synthesized from the corresponding 2-substituted diethyl malonates 5a-e and subjected to asymmetric enzymatic acetylation. The diethyl malonates 5a-f were prepared from diethyl chloromethylenemalonate 3 by using either a one- or a two-step process. Asymmetric acetylation of 3-hydroxy-2-hydroxymethylpropanal diethyl acetal 6b with several enzymes was studied first, showing the highest enantiotopic selectivity with lipase from Pseudomonas fluorescens (PfL). Solvent effect was also investigated: the best selectivity was obtained in a mixture of hexane and diethyl ether. Furthermore, several other acetals 6a-e were also tested under the optimal acetylation conditions. (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0957-4166(97)00018-9
• 作为产物：
  描述：

  diethyl (hydroxymethylene)malonate 在 吡啶 、 氯化亚砜 、 N,N-二甲基甲酰胺 作用下， 以 甲苯 为溶剂， 反应 0.25h， 生成 Diethyl 2-(phenylmethoxymethylidene)propanedioate
  参考文献：
  名称：

  Synthesis and lipase-catalyzed asymmetric acetylation of 3-hydroxy-2-hydroxymethylpropanal acetals

  摘要：

  Prochiral dialkylacetal derivatives of 3-hydroxy-2-hydroxymethylpropanal 6a-e were synthesized from the corresponding 2-substituted diethyl malonates 5a-e and subjected to asymmetric enzymatic acetylation. The diethyl malonates 5a-f were prepared from diethyl chloromethylenemalonate 3 by using either a one- or a two-step process. Asymmetric acetylation of 3-hydroxy-2-hydroxymethylpropanal diethyl acetal 6b with several enzymes was studied first, showing the highest enantiotopic selectivity with lipase from Pseudomonas fluorescens (PfL). Solvent effect was also investigated: the best selectivity was obtained in a mixture of hexane and diethyl ether. Furthermore, several other acetals 6a-e were also tested under the optimal acetylation conditions. (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0957-4166(97)00018-9

文献信息

• Synthesis and lipase-catalyzed asymmetric acetylation of 3-hydroxy-2-hydroxymethylpropanal acetals
  作者：Gabriella Egri、Elemér Fogassy、Lajos Novák、László Poppe

  DOI：10.1016/s0957-4166(97)00018-9

  日期：1997.2

  Prochiral dialkylacetal derivatives of 3-hydroxy-2-hydroxymethylpropanal 6a-e were synthesized from the corresponding 2-substituted diethyl malonates 5a-e and subjected to asymmetric enzymatic acetylation. The diethyl malonates 5a-f were prepared from diethyl chloromethylenemalonate 3 by using either a one- or a two-step process. Asymmetric acetylation of 3-hydroxy-2-hydroxymethylpropanal diethyl acetal 6b with several enzymes was studied first, showing the highest enantiotopic selectivity with lipase from Pseudomonas fluorescens (PfL). Solvent effect was also investigated: the best selectivity was obtained in a mixture of hexane and diethyl ether. Furthermore, several other acetals 6a-e were also tested under the optimal acetylation conditions. (C) 1997 Elsevier Science Ltd.