4-methoxy-2,3,5-trimethylphenol | 130422-86-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 酚类
• 英文名称: 4-methoxy-2,3,5-trimethylphenol
• 英文别名: Phenol, 4-methoxy-2,3,5-trimethyl-
• CAS: 130422-86-5
• 化学式: C₁₀H₁₄O₂
• 分子量: 166.22
• InChiKey: NVVWFVYXFDXGTA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  29.5
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  4-methoxy-2,3,5-trimethylphenol 在 吡啶 、 titanium(IV) tetraethanolate 、 palladium 10% on activated carbon 、 氢气 作用下， 以 甲苯 为溶剂， 20.0 ℃ 、101.33 kPa 条件下， 反应 12.0h， 生成 5,7,8-trimethyl-2-((4R,8R)-4,8,12-trimethyltridecyl)chroman-6-yl acetate
  参考文献：
  名称：

  使用结构相同的非天然配体可以调节使用简并自诱导剂的细菌物种的群体感应

  摘要：

  这样说吧：不同的细菌使用相同的群体感应 (QS) 信号来调节重要的细胞密度依赖性表型。在此，我们表明，先前在一个物种中被鉴定为 QS 调节剂的非天然化合物可以重新用于调节利用相同天然信号的替代细菌中的 QS。这些结果大大拓宽了已知的非天然 QS 调节剂的种类范围。

  DOI：

  10.1002/cbic.201000551
• 作为产物：
  描述：

  4-tert-butyldimethylsilyloxy-1-methoxy-2,3,6-trimethylbenzene 在 四丁基氟化铵 作用下， 以 四氢呋喃 为溶剂， 反应 1.0h， 以96%的产率得到4-methoxy-2,3,5-trimethylphenol
  参考文献：
  名称：

  Development of Novel Antioxidants:  Design, Synthesis, and Reactivity

  摘要：

  We are attempting to develop novel synthetic antioxidants aimed at retarding the effects of free-radical induced cell damage. In this paper we discuss the design strategy and report the synthesis of seven novel antioxidants, including six catechols and a benzylic phenol. The bond dissociation enthalpy (BDE) for the most active (weakest) OH bond in each molecule was calculated by theoretical methods, as well as the BDE for the semiquinone radical. Reaction rates with the nitrogen-centered free radical DPPH. were measured in ethyl acetate. The log of k(DPPH) for bimolecular reaction correlated well with the primary BDE. The correlation between rate constants and calculated BDEs shows that the BDE is a good predictor of antioxidant activity with DPPH., suggesting that our design criteria are useful and that these compounds should undergo further testing in cell cultures and in animal models.

  DOI：

  10.1021/jo0301090

文献信息

• PROCESS FOR THE PREPARATION OF AROMATIC AMINES
  申请人：AHRENS SEBASTIAN

  公开号：US20120071692A1

  公开（公告）日：2012-03-22

  A process for preparing an aromatic amine by reacting a corresponding aromatic alcohol with an aminating agent selected from the group consisting of ammonia, primary amines and secondary amines, in the presence of hydrogen and a catalyst molding, at a temperature of from 60-300°. The catalyst molding comprises Zr, Pd and Pt and has an annular tablet form with an external diameter in the range from 2-6 mm, a height in the range from 1-4 mm and an internal diameter of from 1-5 mm or a topologically equivalent form with the same volume. Catalyst moldings comprising Zr, Pd and Pt are also provided. The catalyst molding has an annular tablet form with an external diameter in the range from 3-6 mm, a height in the range from 1-4 mm and an internal diameter of from 2-5 mm or a topologically equivalent form.

  一种通过将相应的芳香醇与选自氨、一级胺和二级胺的氨基化剂在氢气和催化剂模具的存在下反应来制备芳香胺的方法，温度范围为60-300°C。所述催化剂模具包含Zr、Pd和Pt，并具有外径在2-6毫米范围内、高度在1-4毫米范围内和内径为1-5毫米的环形片形式或具有相同体积的拓扑等效形式。还提供了包含Zr、Pd和Pt的催化剂模具。所述催化剂模具具有外径在3-6毫米范围内、高度在1-4毫米范围内和内径为2-5毫米的环形片形式或具有相同体积的拓扑等效形式。
• [EN] SYNTHESIS OF CHROMANE COMPOUNDS AND THEIR DERIVATIVES BY A COPPER-CATALYZED CONJUGATE ADDITION REACTION<br/>[FR] SYNTHÈSE DE COMPOSÉS DE CHROMANE ET DE LEURS DÉRIVÉS PAR UNE RÉACTION D'ADDITION CONJUGUÉE CATALYSÉE PAR DU CUIVRE
  申请人：DSM IP ASSETS BV

  公开号：WO2015059129A1

  公开（公告）日：2015-04-30

  The present invention relates to the preparation of chromane compounds and their derivatives by a copper-catalyzed conjugate addition reaction. It has been observed that in highly stereoselective manner a methyl group can be introduced to the 2 position of chromane ring by reaction of a chromenone with Al(CH3)3 in the presence of a Cu(I) salt and specific chiral phosphoramidites. The compounds obtained are important intermediates particularly for the synthesis of chiral tocopherols.

  本发明涉及通过铜催化的共轭加成反应制备色满化合物及其衍生物。观察到，在高度立体选择性的方式下，通过色满酮与三甲基铝在铜(I)盐和特定手性磷酰胺的存在下反应，可以将甲基引入到色满环的2位。所得到的化合物是重要的中间体，特别适用于合成手性生育酚。
• METHOD FOR PRODUCING CYANOGEN-HALIDE, CYANATE ESTER COMPOUND AND METHOD FOR PRODUCING THE SAME, AND RESIN COMPOSITION
  申请人：MITSUBISHI GAS CHEMICAL COMPANY, INC.

  公开号：US20150299110A1

  公开（公告）日：2015-10-22

  A method for efficiently producing a cyanogen halide with suppressed side effects, and a method for producing a high-purity cyanate ester compound at a high yield includes contacting a halogen molecule with an aqueous solution containing hydrogen cyanide and/or a metal cyanide, so that the hydrogen cyanide and/or the metal cyanide is allowed to react with the halogen molecule in the reaction solution to obtain the cyanogen halide, wherein more than 1 mole of the hydrogen cyanide or the metal cyanide is used based on 1 mole of the halogen molecule, and when an amount of substance of an unreacted hydrogen cyanide or an unreacted metal cyanide is defined as mole (A) and an amount of substance of the generated cyanogen halide is defined as mole (B), the reaction is terminated in a state in which (A):(A)+(B) is between 0.00009:1 and 0.2:1.

  一种用于高效生产抑制副作用的氰卤化物，以及以高收率生产高纯度氰酸酯化合物的方法包括将卤素分子与含有氢氰酸和/或金属氰化物的水溶液接触，使得氢氰酸和/或金属氰化物与卤素分子在反应溶液中发生反应以获得氰卤化物，其中基于1摩尔卤素分子使用超过1摩尔的氢氰酸或金属氰化物，当未反应的氢氰酸或未反应的金属氰化物的物质量定义为摩尔(A)，生成的氰卤化物的物质量定义为摩尔(B)，反应在(A)：(A)+(B)介于0.00009:1和0.2:1之间的状态中终止。
• MODIFIER FOR AROMATIC POLYESTER AND AROMATIC POLYESTER RESIN COMPOSITION COMPRISING THE SAME
  申请人：TABATA Masayoshi

  公开号：US20110224343A1

  公开（公告）日：2011-09-15

  The present invention provides a modifier for aromatic polyesters which enhances the melt fluidity of aromatic polyesters without a significant decrease in the heat resistance of the aromatic polyesters, and an aromatic polyester resin composition including the modifier for aromatic polyesters. The present invention relates to a modifier for aromatic polyesters comprising polyhydric phenol residues and residues of aromatic polycarboxylic acid, acid halide or acid anhydride thereof, and the modifier comprises a material having a structure composed of a first residue selected from the group consisting of divalent residues represented by Formula (I): —Ar—W 1 x —Ar— and by Formula (II): —Ar—, the first residues being bonded to two identical or different second residues selected from the group consisting of monovalent residues represented by Formula (III): and monovalent residues represented by Formula (IV): —O—C(O)—R 7 —.

  本发明提供了一种用于芳香族聚酯的改性剂，可以增强芳香族聚酯的熔融流动性，而不明显降低芳香族聚酯的耐热性，以及包括该改性剂的芳香族聚酯树脂组合物。本发明涉及一种用于芳香族聚酯的改性剂，包括多羟基酚残基和芳香族多羧酸、酸卤或其酸酐残基，该改性剂包括具有以下结构的材料：第一残基，选择自由式(I)所代表的二价残基：—Ar—W1x—Ar—和自由式(II)所代表的：—Ar—，第一残基与选择自由式(III)所代表的单价残基：和自由式(IV)所代表的单价残基：—O—C(O)—R7—的两个相同或不同的第二残基结合。
• Total Synthesis of (<i>R</i>,<i>R</i>,<i>R</i>)-α-Tocopherol Through Asymmetric Cu-Catalyzed 1,4-Addition
  作者：Andreas Ole Termath、Hanna Sebode、Waldemar Schlundt、René T. Stemmler、Thomas Netscher、Werner Bonrath、Hans-Günther Schmalz

  DOI：10.1002/chem.201404379

  日期：2014.9.15

  introducing a disposable activating substituent at C‐3, the asymmetric 1,4‐addition to a notoriously unreactive 2‐substituted chromenone was achieved with high levels of (2R)‐stereoselectivity in the presence of a chiral CuI‐phosphoramidite complex as a catalyst. This paved the way for an efficient and conceptually novel synthesis of (R,R,R)‐α‐tocopherol from readily available starting materials.

  通过在C-3处引入一个一次性活化取代基，在手性Cu I-亚磷酰胺络合物存在下，以高水平的（2 R）-立体选择性实现了众所周知的不具有反应性的2-取代的二甲基色酮的不对称1,4-加成。催化剂。这为从容易获得的起始原料高效合成概念上新颖的（R，R，R）-α-生育酚铺平了道路。