4-methyl-2-propyl-benzaldehyde

• 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: 4-methyl-2-propyl-benzaldehyde
• 英文别名: 2-normalpropyl-4-methylbenzaldehyde；4-Methyl-2-propylbenzaldehyde
• 化学式: C₁₁H₁₄O
• 分子量: 162.232
• InChiKey: PTFXSFSIQWVFKD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  12
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  2-已烯醛 、 3-甲基-2-丁烯醛 在 四氢吡咯 、 溶剂黄146 manganese(IV) oxide 作用下， 以 乙腈 为溶剂， 反应 7.0h， 以72%的产率得到4-methyl-2-propyl-benzaldehyde
  参考文献：
  名称：

  α，β-不饱和醛的有机催化[4 + 2]和[3 + 3]环加成反应合成芳香醛

  摘要：

  描述了α，β-不饱和醛的有机催化的分子间和分子内[4 + 2]和[3 + 3]环加成以得到多取代的芳族醛。观察到对环加成反应的高选择性是由l-脯氨酸和吡咯烷-HOAc产生的催化剂作用，以及助催化剂的加成作用。

  DOI：

  10.1016/j.tet.2007.01.039

文献信息

• METHOD FOR PRODUCING 2,4-DIALKYLBENZALDEHYDE
  申请人：MITSUBISHI GAS CHEMICAL COMPANY, INC.

  公开号：US20240132434A1

  公开（公告）日：2024-04-25

  An object of the present invention is to provide a method for producing 2,4-dialkylbenzaldehyde with excellent conversion rate and yield, and excellent regioselectivity for formylation, by allowing carbon monoxide to react on a starting material containing a specific m-dialkylbenzene in the presence of hydrogen fluoride and boron trifluoride. The method for producing 2,4-dialkylbenzaldehyde according to the present invention comprises a step of allowing carbon monoxide to react on a starting material containing m-dialkylbenzene represented by formula (1) in the presence of hydrogen fluoride and boron trifluoride for formylation at least at a position (a), wherein the starting material is a dialkylbenzene containing more than 90 mol % of m-dialkylbenzene represented by formula (1), and the number of moles of boron trifluoride relative to 1 mole of m-dialkylbenzene represented by formula (1) is 0.7 mol or more and 3.0 mol or less: a wherein R 1 represents an alkyl group having 1 or more and 3 or less carbon atoms, and R 2 represents a chain or cyclic alkyl group having 2 or more and 7 or less carbon atoms, with a secondary or tertiary carbon at the benzylic position, provided that the number of carbons of R 2 is larger than the number of carbons of R 1 .