2,4,5-三甲基-2-苯基-1,3-二氧戊环 | 5413-61-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 2,4,5-三甲基-2-苯基-1,3-二氧戊环
• 英文名称: 2-methyl-2-phenyl-4,5-dimethyl-1,3-dioxolane
• 英文别名: 2,5,5-trimethyl-2-phenyl-1,3-dioxane；2,4,5-Trimethyl-2-phenyl-1,3-dioxolane
• CAS: 5413-61-6
• 化学式: C₁₂H₁₆O₂
• 分子量: 192.258
• InChiKey: WMAYHUYATQWWQA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  14
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 海关编码：
  2932999099

反应信息

• 作为产物：
  描述：

  苯乙酮 、 2,3-丁二醇 以 正己烷 为溶剂， 反应 1.5h， 以89%的产率得到2,4,5-三甲基-2-苯基-1,3-二氧戊环
  参考文献：
  名称：

  Silica-Gel Supported Sulfamic Acid (SA/SiO₂) as an Efficient and Reusable Catalyst for Conversion of Ketones into Oxathioacetals and Dithioacetals

  摘要：

  A simple and efficient method for the conversion of carbonyl compounds to oxathioacetals and dithioacetals using SA/SiO2 as an acid catalyst has been achieved. SA/SiO2 is easily recovered from the reaction mixture and can be reused at least 15 times without loss of catalytic activity.

  DOI：

  10.1080/00397911.2011.604458

文献信息

• Regioselective transformation of alkynes into cyclic acetals and thioacetals with a gold(I) catalyst: comparison with Brønsted acid catalysts
  作者：Laura L. Santos、Violeta R. Ruiz、Maria J. Sabater、Avelino Corma

  DOI：10.1016/j.tet.2008.06.032

  日期：2008.8

  Au(I) catalyzes the transformation of alkynes into cyclic acetals and thioacetals at much higher rate than Brønsted acids. The reaction appears to be general for a range of alkynes and diols or dithiols, which are efficiently transformed with high selectivities. One of the salient features of this reaction process is the high reactivity of the enol ether or enol thioether intermediates, which undergo

  Au（I）以比布朗斯台德酸高得多的速率催化炔烃向环状缩醛和硫缩醛的转化。对于一系列炔烃和二醇或二硫醇，该反应似乎是普遍的，这些炔烃和二醇或二硫醇以高选择性被有效地转化。该反应过程的显着特征之一是烯醇醚或烯醇硫醚中间体的高反应性，它们进行快速异构化反应以提供环状缩醛或硫缩醛，因此不需要分离或随后的活化过程。这种类型的反应使我们能够合成一系列香料。
• Palladium-catalyzed synthesis of terminal acetalsvia highly selective anti-Markovnikov nucleophilic attack of pinacol on vinylarenes, allyl ethers, and 1,5-dienes
  作者：Mayumi Yamamoto、Sonoe Nakaoka、Yasuyuki Ura、Yasutaka Kataoka

  DOI：10.1039/c2cc16561a

  日期：——

  A palladium-catalyzed reaction of vinylarenes, allyl ethers, and 1,5-dienes with pinacol proceeded via a selective anti-Markovnikov nucleophilic attack to afford corresponding terminal acetals as major products. The bulkiness of pinacol was found to be critical in controlling the regioselectivity.

  通过钯催化的反应，乙烯基芳烃、烯丙基醚和1,5-二烯与频哪醇作用，经过选择性的反马科夫尼科夫亲核攻击，主要得到相应的末端缩醛产物。发现频哪醇的体积大小对区域选择性的控制至关重要。