5,5-dimethyl-2-(4-methylsulfanylphenyl)-1,3-dioxane | 251989-43-2

• 分子结构分类: 有机化合物 - 有机硫化合物 - 硫醚类
• 英文名称: 5,5-dimethyl-2-(4-methylsulfanylphenyl)-1,3-dioxane
• 英文别名: 5,5-dimethyl-2-(4-(methylthio)phenyl)-1,3-dioxane
• CAS: 251989-43-2
• 化学式: C₁₃H₁₈O₂S
• 分子量: 238.351
• InChiKey: KKPLDFYLDWBMMJ-UHFFFAOYSA-N

物化性质

• 熔点：
  74-75 °C
• 沸点：
  336.1±37.0 °C(Predicted)
• 密度：
  1.11±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.54
• 拓扑面积：
  43.8
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  5,5-dimethyl-2-(4-methylsulfanylphenyl)-1,3-dioxane 在 mesna 作用下， 以 N,N-二甲基乙酰胺 为溶剂， 生成
  参考文献：
  名称：

  Thiol-Derivatized Porphyrins for Attachment to Electroactive Surfaces

  摘要：

  The attachment of porphyrin monomers and multiporphyrin arrays in controlled architectures on electroactive surfaces opens many opportunities for electrochemical studies. Toward this goal, we have developed routes for the preparation of thiol-derivatized porphyrin monomers and porphyrin building blocks that require minimal or no handling of free thiols. Routes to S-protected p-thiobenzaldehydes and m-(thiomethyl)benzaldehydes have been developed. TRIO sets of mesosubstituted porphyrins with variation in electrochemical potentials have been prepared for vertical or horizontal orientation with respect to the electroactive surface. In one set, each porphyrin bears one S-protected p-thiophenyl unit and substituents at the three remaining meso-positions. In the other set each porphyrin possesses four S-protected m-(thiomethyl)phenyl units. Tuning the electrochemical potential in the former set has been achieved by variation of the meso substituents (mesityl, 2,4,6-trimethoxyphenyl, n-pentyl, pentafluorophenyl) and in the latter set by variation of the central metal (Zn, Cu, Co, Ag). Six thiol protecting groups ES-cyano, S-(N-ethylcarbamoyl), S-acetyl, S-(9-anthrylmethyl), S-(2,4-dinitrophenyl), S-pivaloyl] have been found to be compatible with porphyrin formation and metalation with zinc. The S-cyano, S-(N-ethylcarbamoyl), and S-acetyl groups undergo in situ cleavage and/or binding on a gold surface. Of these three, only the S-acetyl protecting group is compatible with the Pd-mediated iodo-ethyne coupling conditions for the preparation of multiporphyrin arrays. Three trans-substituted porphyrin building blocks have been prepared for the synthesis of multiporphyrin arrays that can be attached to an electroactive surface. One porphyrin has two mesityl, one p-iodophenyl, and one p-(S-acetylthio)phenyl substituent for vertical positioning, and two porphyrins each have two m-iodophenyl and two S-protected m-(thiomethyl)phenyl substituents for horizontal positioning. Altogether, 16 free base and 16 metalloporphyrins have been prepared. This work establishes the foundation for preparing diverse thiol-derivatized porphyrin monomers and building blocks.

  DOI：

  10.1021/jo9911084
• 作为产物：
  描述：

  2,2-二甲基-1,3-丙二醇 、 4-(甲基巯基)苯甲醛 在 对甲苯磺酸 作用下， 以 甲苯 为溶剂， 以93%的产率得到5,5-dimethyl-2-(4-methylsulfanylphenyl)-1,3-dioxane
  参考文献：
  名称：

  1,3,5-三取代的2-吡唑啉类化合物作为具有抗增殖活性的新型环加氧酶-2抑制剂的合成及生物学评价

  摘要：

  合成了一系列新的抑制环氧合酶-2（COX-2）的1,3,5-三取代2-吡唑啉。所设计的结构包括COX-2药效SO 2 CH 3在对位于吡唑啉骨架的C-5在苯环的位上。测试了合成的化合物对人结肠直肠腺癌细胞系HT-29的体外COX-1 / COX-2抑制作用和细胞毒性。铅化合物（4-氯苯基）{5- [4-（甲磺酰基）苯基] -3-苯基-4,5-二氢-1 H-吡唑-1-基}甲酮（16）显示出显着的COX-2抑制作用（ IC 50 = 0.05±0.01μM）和抗增殖活性（IC 50= 5.46±4.71μM）。分子对接研究表明，基于吡唑啉的新化合物通过多种疏水和氢键相互作用与COX-2酶的关键结合位点残基相互作用。

  DOI：

  10.1002/cbdv.202000832

文献信息

• Nickel-Catalyzed Reversible Functional Group Metathesis between Aryl Nitriles and Aryl Thioethers
  作者：Tristan Delcaillau、Philip Boehm、Bill Morandi

  DOI：10.1021/jacs.1c00529

  日期：2021.3.17

  We describe a new functional group metathesis between aryl nitriles and aryl thioethers. The catalytic system nickel/dcype is essential to achieve this fully reversible transformation in good to excellent yields. Furthermore, the cyanide- and thiol-free reaction shows high functional group tolerance and great efficiency for the late-stage derivatization of commercial molecules. Finally, synthetic applications

  我们描述了芳基腈和芳基硫醚之间的新官能团复分解。催化系统镍/dcype 对于实现这种完全可逆的转化，以良好的收率至关重要。此外，不含氰化物和硫醇的反应显示出高官能团耐受性和商业分子后期衍生化的高效率。最后，合成应用证明了它在多步合成中的多功能性和实用性。
• Redox-Neutral Borylation of Aryl Sulfonium Salts via C–S Activation Enabled by Light
  作者：Chen Huang、Jie Feng、Rui Ma、Shuaishuai Fang、Tao Lu、Weifang Tang、Ding Du、Jian Gao

  DOI：10.1021/acs.orglett.9b03850

  日期：2019.12.6

  photoinduced strategy for the borylation of aryl sulfonium salts using bis(pinacolato)diboron as the boron source. This method exploits redox-neutral aryl sulfoniums to gain access to aryl radicals via C-S bond activation upon photoexcitation under transition-metal-free conditions. Therefore, it grants access to diverse arylboronate esters with good performance from easily available aryl sulfoniums accompanied

  本文报道了一种使用双（频哪醇）二硼作为硼源进行芳基sulf盐的硼化的新光诱导策略。该方法利用氧化还原中性芳基sulf在无过渡金属条件下进行光激发时通过CS键活化来获得芳基自由基。因此，它可从容易获得的芳基sulf获得具有良好性能的各种芳基硼酸酯，并伴有温和的条件，操作简便和易于扩展。
• Nickel-Catalyzed Cyanation of Aryl Thioethers
  作者：Tristan Delcaillau、Adrian Woenckhaus-Alvarez、Bill Morandi

  DOI：10.1021/acs.orglett.1c02285

  日期：2021.9.17

  has been developed to access functionalized aryl nitriles. The ligand dcype (1,2-bis(dicyclohexylphosphino)ethane) in combination with the base KOAc (potassium acetate) is essential for achieving this transformation efficiently. This reaction involves both a C–S bond activation and a C–C bond formation. The scalability, low catalyst and reagents loadings, and high functional group tolerance have enabled

  已开发出使用 Zn(CN) 2作为氰化物源的芳基硫醚的镍催化氰化，以获取官能化的芳基腈。配体 dcype（1,2-双（二环己基膦基）乙烷）与碱 KOAc（醋酸钾）的组合对于有效实现这种转化至关重要。该反应涉及 C-S 键活化和 C-C 键形成。可扩展性、低催化剂和试剂负载以及高官能团耐受性使后期衍生化和聚合物回收成为可能，证明了该反应在有机化学中的实用性。
• Palladium-Catalyzed Zinc-Amide-Mediated CH Arylation of Fluoroarenes and Heteroarenes with Aryl Sulfides
  作者：Shinya Otsuka、Hideki Yorimitsu、Atsuhiro Osuka

  DOI：10.1002/chem.201502101

  日期：2015.10.12

  heteroarenes with aryl sulfides proceeds smoothly with the aid of a palladium–N‐heterocyclic carbene catalyst. A bulky zinc amide, TMPZnCl⋅LiCl, plays a key role as an effective base to generate the corresponding arylzinc species in situ. This arylation protocol is practically much easier to perform than our previous method, which necessitates preparation of the arylzinc reagents in advance from the corresponding

  Ç  polyfluoroarenes和杂芳烃的与芳基硫化物ħ芳基化用钯- N-杂环卡宾催化剂的帮助下顺利进行。甲笨重锌酰胺，TMPZnCl ⋅的LiCl，起着以原位产生相应的芳基锌物种的有效碱关键作用。该芳基化方案实际上比我们以前的方法更容易执行，后者需要从相应的芳基卤化物预先制备芳基锌试剂。通过硫特异性反应（如S N Ar磺酰化反应和扩展的Pummerer反应）制备的芳基硫化物会经历这种直接芳基化，从而提供有趣的转化，而这些转化是传统的基于卤素的有机合成难以实现的。
• Pd-NHC-Catalyzed Alkynylation of General Aryl Sulfides with Alkynyl Grignard Reagents
  作者：Alexandre Baralle、Hideki Yorimitsu、Atsuhiro Osuka

  DOI：10.1002/chem.201602315

  日期：2016.7.25

  Cross‐coupling reactions of unactivated aryl sulfides with alkynylmagnesium chloride have been invented to afford 1‐aryl‐1‐alkynes with the aid of a palladium/N‐heterocyclic carbene complex. This reaction has by far the widest scope of all transformations utilizing aryl sulfides and alkynes, while known cross‐coupling alkynylations of aryl‐sulfur electrophiles require activated azaaryl sulfides, thiolactams

  现已发现，未活化的芳基硫醚与氯化炔基镁的交叉偶联反应可借助钯/ N-杂环卡宾络合物得到1-芳基-1-炔烃。迄今为止，该反应在所有利用芳基硫醚和炔烃的转化中涉及的范围最广，而已知的芳基硫亲电试剂的交叉偶联炔基化反应需要活化的氮杂芳基硫醚，硫代内酰胺或芳烃磺酰氯。芳基硫醚的炔基化与典型的保护性官能团相容。通过利用特征性有机硫化学，炔基化可用于合成基于苯并呋喃的荧光分子。