2,3,5,6-四甲氧基苯甲醛 | 34602-86-3

• 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: 2,3,5,6-四甲氧基苯甲醛
• 英文名称: 2,3,5,6-tetramethoxybenzaldehyde
• CAS: 34602-86-3
• 化学式: C₁₁H₁₄O₅
• 分子量: 226.229
• InChiKey: KDHNIQSERXRSPO-UHFFFAOYSA-N

物化性质

• 熔点：
  79.5-81.4 °C(Solv: ethyl acetate (141-78-6); hexane (110-54-3))
• 沸点：
  367.2±37.0 °C(Predicted)
• 密度：
  1.147±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  16
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  54
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  2,3,5,6-四甲氧基苯甲醛 在 palladium on activated charcoal 盐酸 、 甲醇 、 lithium aluminium tetrahydride 、 正丁基锂 、 ammonium cerium(IV) nitrate 、 四溴化碳 、 氢气 、 sodium hydride 、 三苯基膦 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 乙醇 、 正己烷 、 二氯甲烷 、 水 、 二甲基亚砜 、 三乙胺 、 乙腈 为溶剂， -78.0~110.0 ℃ 、101.33 kPa 条件下， 反应 62.0h， 生成 [1R-(1α,2β,4aβ,8aα)]-3-[(decahydro-1,2,4a-trimethyl-5-methylene-1-naphthalenyl)methyl]-2,5-dimethoxy-2,5-cyclohexadiene-1,4-dione
  参考文献：
  名称：

  高效全合成（-）-Ilimaquinone。

  摘要：

  描述了从海海绵中分离出的代谢物（-）-ilimaquinone的全合成。合成的关键步骤是将醌部分连接到十二烷骨架上。用四甲氧基苄基溴15作为烷基化剂，由易得的二酮8分四步得到的烯酮11烷基化，从而以优异的产率得到加成产物16。四甲氧基苄基的存在引起外烯烃18的立体选择性氢化，导致所需异构体的比例为9∶1。用硝酸铈铵（CAN）处理化合物21可形成醌并仅一步脱保护一个甲醚即可提供所需的ilimaquinone 1。

  DOI：

  10.1021/jo9805192
• 作为产物：
  描述：

  2,3,5,6-tetramethoxybenzyl chloride 在 dipotassium hydrogenphosphate 、 二甲基氧化硒 作用下， 以 1,2-二氯乙烷 为溶剂， 反应 24.0h， 以88%的产率得到2,3,5,6-四甲氧基苯甲醛
  参考文献：
  名称：

  A Convenient Oxidation of Halomethylarenes and Alcohols to Aldehydes with Dimethyl Selenoxide and Potassium Benzeneselenite

  摘要：

  DOI：

  10.1055/s-1984-30956

文献信息

• Synthesis of polyhydroxylated flavonoids bearing a lipophilic decyl tail as potential therapeutic antioxidants
  作者：Stuart T. Caldwell、Donald B. McPhail、Garry G. Duthie、Richard C. Hartley

  DOI：10.1139/v11-087

  日期：2012.1

  Antioxidants have potential for the treatment of stroke and neurodegeneration, and chimeric compounds that combine a flavon-3-ol head group related to myricetin and a lipophilic decyl tail are known to protect membranes from oxidative damage at least as well as vitamin E. New flavon-3-ols that are highly hydroxylated in the B ring in ways not found in natural flavon-3-ols and bearing a lipophilic decyl tail have been prepared from trimethoxy- and tetramethoxybenzoic acids accessed by lithiation–carboxylation reactions. Direct enolate acylation was preferred over Baker–Venkataraman rearrangement when there were methoxy groups at both the 2- and the 6-position of the benzoic acid derivatives.

  抗氧化剂在治疗中风和神经退行性疾病方面具有潜在作用，已知将含有与杨梅素相关的黄酮-3-醇头基团与亲脂性癸基尾链结合的嵌合化合物至少与维生素E一样能保护膜免受氧化损伤。已经从通过 lithiation-carboxylation 反应获得的间三甲氧基苯甲酸和均四甲氧基苯甲酸合成了新的黄酮-3-醇，这些新的黄酮-3-醇在B环上高度羟基化，以自然黄酮-3-醇中未发现的方式，并带有亲脂性癸基尾链。当苯甲酸衍生物的2-和6-位置上都有甲氧基时，首选直接烯醇酯化，而不是Baker-Venkataraman重排。
• Polygala tenuifolia-Acori tatarinowii herbal pair as an inspiration for substituted cinnamic α-asaronol esters: Design, synthesis, anticonvulsant activity, and inhibition of lactate dehydrogenase study
  作者：Yajun Bai、Xirui He、Yujun Bai、Ying Sun、Zefeng Zhao、Xufei Chen、Bin Li、Jing Xie、Yang Li、Pu Jia、Xue Meng、Ye Zhao、Yanrui Ding、Chaoni Xiao、Shixiang Wang、Jie Yu、Sha Liao、Yajun Zhang、Zhiling Zhu、Qiang Zhang、Yuhui Zhao、Fanggang Qin、Yi Zhang、Xiaoyang Wei、Min Zeng、Jing Liang、Ye Cuan、Guangzhi Shan、Tai-Ping Fan、Biao Wu、Xiaohui Zheng

  DOI：10.1016/j.ejmech.2019.111650

  日期：2019.12

  substituted cinnamic α-asaronol esters and analogues were designed by Combination of Traditional Chinese Medicine Molecular Chemistry (CTCMMC) strategy, synthesized and tested systematically not only for anticonvulsant activity in three mouse models but also for LDH inhibitory activity. Thereinto, 68-70 and 75 displayed excellent and broad spectra of anticonvulsant activities with modest ability in preventing

  受中药对远志治疗癫痫症的启发，结合中药分子化学（CTCMMC）策略设计了33种新型取代肉桂酸α-细辛醇酯及其类似物，不仅对抗惊厥药进行了系统合成和测试，在三种小鼠模型中具有活性，但对LDH的抑制活性也很高。其中，68-70和75表现出出色的抗惊厥活性谱，且具有适度的预防神经性疼痛的能力，并且神经毒性低。这四种化合物的保护指数均与替比妥醇，拉考酰胺，卡马西平和丙戊酸相比具有优势。68-70表现出良好的LDH1和LDH5抑制活性，且具有非竞争性抑制类型，并且比替替戊醇更有效。值得注意的是70 作为代表剂，也显示为对人α1β2γ2GABAA受体（EC50 46.3±7.3μM）的中等正变构调节剂。因此，有68-70种药物有望发展成为抗癫痫药，特别是用于治疗难治性癫痫病（例如Dravet综合征）。
• Synthesis of oxiranylquinones as new potential bioreductive alkylating agents
  作者：L. Syper、J. Młochowski、K. Kloc

  DOI：10.1016/s0040-4020(01)91854-x

  日期：1983.1

  substituents have been synthesized as potential bioreduetive alkylating agents. The method presented here involves the syntheses of 1,4-dimethoxybenzalkehydes or 1,4-dimethoxynaphthaldehydes, and conversion of the carbonyl groups into the oxiranyl function using trimethylsulfonium chloride in the presence of powdered sodium hydroxide 1,4-Dimethoxy-2-oxiranyl-benzenes and 1,4-dimethoxy-2-oxiranylnaphthalenes

  已经合成了带有环氧乙烷基取代基的1，4-苯醌和1，4-萘醌作为潜在的生物还原性烷基化剂。本文介绍的方法涉及1,4-二甲氧基苯乙醛或1,4-二甲氧基萘醛的合成，以及在粉状氢氧化钠1,4-二甲氧基-2-氧杂烷基-存在下，使用三甲基chloride氯化物将羰基转化为环氧乙烷基官能团。苯和1,4-二甲氧基-2-环氧乙烷基萘已被二吡啶甲酸银（II）氧化为醌。
• A Synthetic Study on Bauhinoxepin J: Construction of a Dibenzo[b,f]oxepin Ring System by a DDQ-Promoted Oxidative Dearomatization–Cyclization Approach
  作者：Masahiro Yoshida、Yohei Maeyama、Kozo Shishido

  DOI：10.3987/com-09-s(s)31

  日期：——

  Efforts to construct a dibenzo[b,f]oxepin ring system for a synthesis of bauhinoxepin J are described. A DDQ-promoted oxidative dearomatization-cyclization of the 2-phenoxyethyl-substituted tetramethoxybenzene was used to construct a tricyclic quinone monoacetal.

  描述了构建用于合成紫荆花毒 J 的二苯并[b,f]oxepin 环系统的努力。DDQ 促进的 2-苯氧基乙基取代的四甲氧基苯的氧化脱芳构化环化被用于构建三环醌单缩醛。
• A Self-Immolative Spacer That Enables Tunable Controlled Release of Phenols under Neutral Conditions
  作者：Kyle M. Schmid、Lasse Jensen、Scott T. Phillips

  DOI：10.1021/jo300400q

  日期：2012.5.4

  A current challenge in the area of responsive materials is the design of reagents and polymers that provide controlled release of phenols in environments that are less polar than water. In these contexts, a molecular strategy that enables release of nearly any phenol with predictable and tunable rates and without complication from background hydrolysis would substantially increase the precision with which materials can be designed to respond to a particular signal. This Article addresses this problem at the fundamental level by describing the design, synthesis, and physical-organic characterization of two small molecule self-immolative spacers that are capable of releasing phenols in organic and mixed organic aqueous solutions. The rate of release from these small molecule model systems is predictable and tunable, such that nearly any type of phenol, regardless of pK(a) value, can be released in neutral solutions without complications from nonspecific background release due to hydrolysis. Furthermore, the release properties of the spacers can be predicted from bond length and conformation data (obtained from crystal structures). On the basis of these results, it should now be possible to incorporate these design elements into materials to enable precise response properties in environments that are not 100% aqueous.