2,4,6-三甲氧基二苯甲烷 | 22807-99-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 2,4,6-三甲氧基二苯甲烷
• 英文名称: 2-benzyl-1,3,5-trimethoxybenzene
• 英文别名: 1,3,5-Trimethoxy-2-(benzyl)benzene
• CAS: 22807-99-4
• 化学式: C₁₆H₁₈O₃
• 分子量: 258.317
• InChiKey: YTQHXEQIYCMRGS-UHFFFAOYSA-N

物化性质

• 熔点：
  91-93 °C
• 沸点：
  373.0±37.0 °C(Predicted)
• 密度：
  1.072±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  19
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  27.7
• 氢给体数：
  0
• 氢受体数：
  3

安全信息

• 海关编码：
  2909309090

反应信息

• 作为反应物：
  描述：

  2,4,6-三甲氧基二苯甲烷 在 盐酸 、 氢氧化钾 、 sodium acetate 、 三溴化硼 、 四氯化锡 、 potassium carbonate 作用下， 以 甲醇 、 乙醇 、 二氯甲烷 、 水 、 丙酮 为溶剂， 反应 44.0h， 生成 (+/-)-8-Benzylnaringenin
  参考文献：
  名称：

  Subtle Side-Chain Modifications of the Hop Phytoestrogen 8-Prenylnaringenin Result in Distinct Agonist/Antagonist Activity Profiles for Estrogen Receptors α and β

  摘要：

  In search of therapeutic agents for estrogen-related pathologies, phytoestrogens are being extensively explored. In contrast to naringenin, 8-prenylnaringenin is a potent hop-derived estrogenic compound, highlighting the importance of the prenyl group for hormonal activity. We investigated the effects of substituting the prenyl group at C(8) with alkyl chains of varying lengths and branching patterns on estrogen receptor (ER) subtype ER alpha- and ER beta-binding affinities and transcriptional activities. In addition, features of the ligand-induced receptor conformations were explored using a set of specific ER-binding peptides. The new 8-alkylnaringenins were found to span an activity spectrum ranging from full agonism to partial agonism to antagonism. Most strikingly, 8-(2,2-dimethylpropyl) naringenin exhibited full agonist character on ERR, but pronounced antagonist character on ER beta. Knowledge on how ER-subtype-selective activities can be designed provides valuable information for future drug or tool compound discovery.

  DOI：

  10.1021/jm060692n
• 作为产物：
  描述：

  phenyl-p-tolylsulfanyl-(2,4,6-trimethoxy-phenyl)-methane 在 乙醇 、 镍 作用下， 生成 2,4,6-三甲氧基二苯甲烷
  参考文献：
  名称：

  968.羧酸酯中的烷基-氧裂变。第十一部分。含有2：4：6-三甲氧基苯基的仲醇的反应

  摘要：

  DOI：

  10.1039/jr9520004964

文献信息

• [EN] INTRODUCTION OF ALKYL SUBSTITUENTS TO AROMATIC COMPOUNDS<br/>[FR] INTRODUCTION DE SUBSTITUANTS ALKYLE DANS DES COMPOSÉS AROMATIQUES
  申请人：B G NEGEV TECH AND APPLICATIONS LTD AT BEN-GURION UNIV

  公开号：WO2016132355A1

  公开（公告）日：2016-08-25

  Novel selective synthesis route to introduce primary alkyl groups on aromatic compounds is disclosed. The synthesis route is based on electrophilic aromatic substitutions of thionium ion species that are generated in-situ from aldehydes and thiols, affording benzyl sulfide that can be reduced with triethylsilane.

  披露了一种新颖的选择性合成路线，用于在芳香化合物上引入初级烷基团。该合成路线基于在芳香取代反应中生成的硫正离子物种，这些硫正离子物种是从醛和硫醇原位生成的，从而得到可以与三乙基硅烷还原的苯甲基硫醚。
• B(C6F5)3: an efficient catalyst for reductive alkylation of alkoxy benzenes and for synthesis of triarylmethanes using aldehydes
  作者：S. Chandrasekhar、Sanjida Khatun、G. Rajesh、Ch. Raji Reddy

  DOI：10.1016/j.tetlet.2009.09.085

  日期：2009.12

  Tris(pentafluorophenyl)borane [B(C6F5)3] has been used as an efficient catalyst for reductive alkylation of alkoxy benzenes using aldehydes as an alkylating agent in the presence of polymethylhydrosiloxane (PMHS). Various alkylated trimethoxybenzene derivatives have been prepared in good to high yields. In addition, B(C6F5)3 was also used as a catalyst for the reaction of electron-rich arenes with aldehydes

  三（五氟苯基）硼烷[B（C 6 F 5）3 ]已被用作在聚甲基氢硅氧烷（PMHS）存在下使用醛作为烷基化剂的烷氧基苯还原烷基化的有效催化剂。各种烷基化的三甲氧基苯衍生物已经以高到高的产率制备。另外，B（C 6 F 5）3也用作富电子芳烃与醛反应以获得三芳基甲烷的催化剂。还已经证明了使用还原烷基化方案合成异色满和四氢异喹啉衍生物。
• Hydrosilanes are not always a reducing reagent: a ruthenium-catalyzed introduction of primary alkyl groups to electron-rich aromatic rings using esters as a source of the alkyl groups
  作者：Hideo Nagashima、Yuichi Kubo、Mitsunobu Kawamura、Takashi Nishikata、Yukihiro Motoyama

  DOI：10.1016/j.tet.2011.08.033

  日期：2011.10

  reaction of electron-rich aromatic rings using a combination of hydrosilane and ester as a source of the primary-alkyl group. The reaction involves electrophilic substitution of arenes by carbocationic species stabilized by a neighboring alkoxy or siloxy group generated during the reduction of esters giving alkylated arenes after reductive removal of the alkoxy or siloxy group at the benzylic position

  甲羰基三钌簇，（μ 3，η 2，η 3，η 5 -acenaphthylene）的Ru 3（CO）7有效地催化氢硅烷使用和酯的组合作为主要的来源的富电子的芳族环的主烷基化反应-烷基。该反应涉及芳烃的电取代，该芳烃被在还原除去苄基位置上的烷氧基或甲硅烷氧基的酯的还原过程中产生的相邻烷氧基或甲硅烷氧基所稳定的碳阳离子物质所取代。
• Mild Friedel–Crafts Reactions inside a Hexameric Resorcinarene Capsule: C−Cl Bond Activation through Hydrogen Bonding to Bridging Water Molecules
  作者：Pellegrino La Manna、Carmen Talotta、Giuseppe Floresta、Margherita De Rosa、Annunziata Soriente、Antonio Rescifina、Carmine Gaeta、Placido Neri

  DOI：10.1002/anie.201801642

  日期：2018.5.4

  Calculations showed that there are catalytically relevant hydrogen‐bonding interactions between the bridging water molecules of the capsule and benzyl chloride, which is fundamental for the activation of the C−Cl bond. The capsule controls the reaction outcome. Inside the inner cavity of the capsule, N‐methylpyrrole is preferentially benzylated in the unusual β‐position while mesitylene reacts faster than 1

  突出了六聚间苯二甲烯胶囊的新型催化特征。利用自组装笼子在温和条件下用苄基氯促进了几种芳烃和杂芳烃的Friedel-Crafts苄基化反应。计算表明，在胶囊的桥连水分子和苄基氯之间存在催化相关的氢键相互作用，这是激活C-Cl键的基础。胶囊控制反应结果。在胶囊内腔内，N-甲基吡咯在不同寻常的β-位置优先被苄基化，而1，3-三甲氧基的反应速度比1，3-二甲氧基苯要快，尽管后者的π-亲核性更高。
• Green, Mild, and Efficient Friedel–Crafts Benzylation of Scarcely Reactive Arenes and Heteroarenes under On‐Water Conditions
  作者：Pellegrino La Manna、Annunziata Soriente、Margherita De Rosa、Antonio Buonerba、Carmen Talotta、Carmine Gaeta、Placido Neri

  DOI：10.1002/cssc.201900137

  日期：2019.4.23

  The catalytic strategy exploits the hydrophobicity of the resorcinarene macrocycle 1 a. The proposed mechanism is based on the activation of benzyl chloride by H‐bonding interactions with catalyst 1 a. In fact, under on‐water conditions the hydrophobic amplification of the strength of the H‐bonding interactions between the OH groups of the resorcinarene catalyst and the chlorine atom of benzyl chloride

  几乎没有反应性的芳烃和杂芳烃的无金属弗里德尔-克拉夫特苄基化反应（FCB）是在水上条件下通过环境可持续的方法进行的。催化策略利用间苯二烯大环1a的疏水性。所提出的机理是基于通过与催化剂1a的H键相互作用来活化苄基氯。实际上，在水上条件下，间苯二甲烯催化剂的OH基团与苄基氯的氯原子之间的H键相互作用强度的疏水性放大导致C-Cl键极化，从而促进了亲电子攻击π亲核试剂。因此，通过使用间苯二甲烯1a作为催化剂，在温和的水条件下，许多芳烃和杂芳烃都被有效地苄基化。苯的FCB在工业上与二苯甲烷的合成有关，因此在间苯二甲烯催化剂1a的存在下，从苯和苄基氯开始，水上程序扩展到克级的二苯甲烷的合成。