2-p-Tolylsulfanyl-malonic acid dimethyl ester | 40939-35-3

• 分子结构分类: 有机化合物 - 有机硫化合物 - 硫醚类
• 英文名称: 2-p-Tolylsulfanyl-malonic acid dimethyl ester
• 英文别名: dimethyl 2-(p-tolylthio)malonate
• CAS: 40939-35-3
• 化学式: C₁₂H₁₄O₄S
• 分子量: 254.307
• InChiKey: SIQQQWIHWCNALI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.8
• 重原子数：
  17.0
• 可旋转键数：
  4.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  52.6
• 氢给体数：
  0.0
• 氢受体数：
  5.0

反应信息

• 作为产物：
  描述：

  对甲苯二硫醚 在 copper(l) iodide 、 8-甲基喹啉1-氧化物 、 氯[2-(二叔丁基磷)二苯基]金 、 potassium carbonate 、 双三氟甲烷磺酰亚胺银盐 作用下， 以 二甲基亚砜 、 1,2-二氯乙烷 为溶剂， 反应 29.0h， 生成 2-p-Tolylsulfanyl-malonic acid dimethyl ester
  参考文献：
  名称：

  金催化的硫炔炔氧化反应通过非碳烯路线形成苯硫基乙炔衍生物

  摘要：

  金催化的8-甲基喹啉氧化物氧化硫代炔烃可生成2-苯基硫代烯酮，可被醇有效地捕集。末端和内部的硫代炔烃在广泛的范围内带有酯，酮，烷基和肟取代基，从而显示出合成的效用。我们的密度泛函理论计算表明，用8-甲基喹啉氧化物对末端和内部硫代炔烃进行金催化的氧化反应可生成与金键合的乙烯酮中间体，而无需使用α-氧代金卡宾。

  DOI：

  10.1021/acs.orglett.9b01768

文献信息

• Pyrolysis of (2-Phenylethyl)phenylsulfonium Ylides.
  作者：Toshiaki Yoshimura、Atsushi Motoyama、Akiko Morishige、Eiichi Tsukurimichi、Choichiro Shimasaki、Kiyoshi Hasegawa

  DOI：10.1246/bcsj.66.174

  日期：——

  In order to obtain information concerning the reaction mechanism of the pyrolysis of sulfonium ylides bearing a substituted phenyl group on the 2-position in the S-ethyl group of ethylphenylsulfonium ylide, (2-phenylethyl)phenylsulfonium bis(methoxycarbonyl)methylide (1) and dicyanomethylide (2) were subjected to pyrolysis in benzene. The reaction rates of 1 and 2 at 140 °C were 6.0- and 3.2-times faster than those of ethylphenylsulfonium bis(methoxycarbonyl)methylide and dicyanomethylide, respectively. The activation parameters for 1 were ΔH‡ = 125 kJ mol−1 and ΔS‡ = −3.8 J K−1 mol−1, while those for 2 were ΔH‡ = 124 kJ mol−1 and ΔS‡ = −2.5 J K−1 mol−1. Substituent effects on the β-phenyl groups in 1 and 2 afforded positive Hammett ρ-values: ρ = 0.49 (γ = 0.997) and ρ = 0.26 (γ = 0.993), respectively.From the obtained results, it was suggested that the pyrolysis proceeds through essentially a concerted intramolecular cis-elimination inclined toward a slightly carbanion-like type from an E1-like type by introducing a phenyl substituent at the 2-position of the ethyl group in the ethylphenylsulfonium ylide.

  为了获取有关乙基苯基亚磺酸乙酯中乙基的2-位上带有取代苯基的磺酸亚磺酸分解反应机理的信息，将（2-苯乙基）苯基亚磺酸双（甲氧基羰基）甲亚基（1）和双氰基甲亚基（2）在苯中进行分解。在140°C时，1和2的反应速率分别比乙基苯基亚磺酸双（甲氧基羰基）甲亚基和双氰基甲亚基快6.0倍和3.2倍。1的活化参数为ΔH‡ = 125 kJ mol−1，ΔS‡ = -3.8 J K−1 mol−1，而2的活化参数为ΔH‡ = 124 kJ mol−1，ΔS‡ = -2.5 J K−1 mol−1。1和2中β-苯基的取代效应提供了正的Hammett ρ值：ρ = 0.49（γ = 0.997）和ρ = 0.26（γ = 0.993）。从得到的结果可以看出，通过在乙基苯基亚磺酸乙的乙基的2-位引入苯基取代基，基本上是通过倾向于稍微类似于碳负离子的顺式消除过程，从而类似于E1型反应。
• KI-catalyzed C–S bond formation <i>via</i> an oxidation relay strategy: efficient access to various α-thio-β-dicarbonyl compounds
  作者：Yi Jiang、Jiao-Xia Zou、Long-Tao Huang、Xue Peng、Jie-Dan Deng、Long-Qing Zhu、Yu-Hang Yang、Yi-Yue Feng、Xiao-Yun Zhang、Zhen Wang

  DOI：10.1039/c8ob00080h

  日期：——

  An efficient and practical methodology to obtain α-thio-β-dicarbonyl compounds was presented under alkaline conditions via potassium iodide (KI) catalysis.

  在碱性条件下，通过碘化钾（KI）催化，提出了一种获得α-硫代-β-二羰基化合物的高效实用方法。
• A CONVENIENT SYNTHESIS OF SULFENYLATED ACTIVE METHYLENE COMPOUNDS USING DIARYL DISULFIDES
  作者：Tamotsu Fujisawa、Kazumi Hata、Takakazu Kojima

  DOI：10.1246/cl.1973.287

  日期：1973.3.5

  sulfenylated active methylene compounds has been investigated by the reaction of diaryl disulfides with active methylene compounds in a basic media. Malonates, acetoacetate, acetylacetone, and malononitrile gave selectively the corresponding monosulfenylated compounds at room temperature. At elevated temperatures, only malononitrile afforded a disulfenylated compound, while reactions with other active methylene

  通过二芳基二硫化物与活性亚甲基化合物在碱性介质中的反应，研究了一种新的磺酰化活性亚甲基化合物的制备方法。丙二酸酯、乙酰乙酸酯、乙酰丙酮和丙二腈在室温下选择性地产生相应的单磺酰化化合物。在升高的温度下，只有丙二腈提供二磺酰化的化合物，而与其他活性亚甲基化合物的反应导致单磺酰化的产物分解。
• σ‐Holes in Iodonium Ylides: Halogen‐Bond Activation of Carboxylic Acids, Phenols and Thiophenols May Enable Their X−H Insertion Reactions
  作者：Carlee A. Montgomery、Islam Jameel、Fabio Cuzzucoli、Tristan Chidley、W. Scott Hopkins、Graham K. Murphy

  DOI：10.1002/chem.202202029

  日期：2022.12.20

  iodonium ylides to possess two σ-holes of differing potentials, situated along the extensions of their C−I bonds. Experimentation revealed that formal O−H or S−H insertion reactions were possible with carboxylic acids, phenols and thiophenols. Halogen-bond activation is presumed to be essential, resulting in α-substituted-β-dicarbonyls in 64 %–99 % yield in five minutes.

  计算分析表明，碘鎓叶立德具有两个不同电位的 σ 孔，位于其 C−I 键的延伸线上。实验表明，正式的 O−H 或 S−H 插入反应可能与羧酸、酚类和苯硫酚有关。卤键活化被认为是必不可少的，导致 α-取代的-β-二羰基化合物在五分钟内以 64%–99% 的产率生成。