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4-(3-hydroxy-2-(2-methoxyphenoxy)propylidene)-2-methoxycyclohexa-2,5-dienone | 36382-86-2

中文名称
——
中文别名
——
英文名称
4-(3-hydroxy-2-(2-methoxyphenoxy)propylidene)-2-methoxycyclohexa-2,5-dienone
英文别名
——
4-(3-hydroxy-2-(2-methoxyphenoxy)propylidene)-2-methoxycyclohexa-2,5-dienone化学式
CAS
36382-86-2
化学式
C17H18O5
mdl
——
分子量
302.327
InChiKey
HGZZEYVOKAAJOS-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

物化性质

  • 沸点:
    529.6±50.0 °C(Predicted)
  • 密度:
    1.23±0.1 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    2.03
  • 重原子数:
    22.0
  • 可旋转键数:
    6.0
  • 环数:
    2.0
  • sp3杂化的碳原子比例:
    0.24
  • 拓扑面积:
    64.99
  • 氢给体数:
    1.0
  • 氢受体数:
    5.0

SDS

SDS:e2dccb3fd9d94d78adf94b14876a98f3
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反应信息

  • 作为反应物:
    参考文献:
    名称:
    Are quinone methides responsible for yellowing of paper in light?
    摘要:
    Irradiation of tetrahydrofuran solutions of quinone methide 1 at 350 nm resulted in the formation of yellow oligomeric products and guaiacol. The rate constants determined for the disappearance of the starting compound and those of guaiacol formation show that the primary reaction involves homolysis of the C-O bond between the allylic carbon atom and the oxygen of the phenolic group. (C) 2002 Elsevier Science Ltd. All rights reserved.
    DOI:
    10.1016/s0040-4039(02)01082-1
  • 作为产物:
    参考文献:
    名称:
    木质素生物合成研究:醌甲基化物的反应性的Diastereopreferential形成p -Hydroxyphenyl-和愈创木型β- Ø -4结构
    摘要:
    对苯醌甲基化物作为临时中间体参与木质素的生物合成,并且芳构化步骤对所得木质素的化学结构有很大影响。一系列醌甲基化物(QMS)的合成,并使其与水在pH为3-7的缓冲液,在25℃下反应到的模拟物形成的p -hydroxyphenyl-和愈创木基型(H-和G型,分别地)β -裸子植物植物细胞壁中的O -4结构。加水发生在3-甲氧基取代的QM(G型QM)中,半衰期为1.4–15分钟。相反,未取代的QM(H型QM)非常不稳定。他们被芳香化为β- O-4产品的半衰期仅为10–40 s。H型质量管理体系中的快速芳香化可以提供优于G型物质的优势,以有效地驱动木质素聚合循环,这可能有助于开发高度木质化的压缩木材。在加水反应中,β- O -4产物的苏式异构体比G型和H型QM的赤式异构体立体立体形成的比例更高(分别为24:76和50:50的赤/苏比) )。赤字比例在较低pH条件下,异构体较高。这种依赖于pH的趋势与先前对3
    DOI:
    10.1021/acs.jafc.8b06465
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文献信息

  • Stereoselective Formation of β-O-4 Structures Mimicking Softwood Lignin Biosynthesis: Effects of Solvent and the Structures of Quinone Methide Lignin Models
    作者:Xuhai Zhu、Takuya Akiyama、Tomoya Yokoyama、Yuji Matsumoto
    DOI:10.1021/acs.jafc.9b01968
    日期:2019.6.26
    guaiacyl (G) β-O-4 structures in plant cell walls. Water addition occurred in 3-methoxy-substituted QMs (G-type QMs) with half-lives (t1/2) between 13 and 15 min, at pH 7, in 50% water solution (dioxane–water, 1:1). The rate increased as the water concentration increased to 99% (t1/2, 1.2–1.4 min). Similar solvent effects were observed for more reactive nonsubstituted QMs (H-type QMs with t1/2 of <1 min)
    在木质素生物合成过程中,对甲基苯醌(QM)会作为中间体形成。QM通过亲核体在其侧链的α位上的进攻而进行芳构化,从而在生长的聚合物中生成酚羟基,并在侧链中形成立体异构体形式。一系列β-O-4-芳基醚QM与水在25°C下反应,以复制植物细胞壁中对羟基苯基(H)和愈创木脂基(G)β-O-4结构的形成。在pH值为7的50%水溶液(二恶烷-水,1:1)中,在3-甲氧基取代的QM(G型QM)中,半衰期(t 1/2)在13至15分钟之间发生加水。 。随着水浓度增加到99%(t 1/2,1.2–1.4分钟)。对于更具反应性的未取代QM(t 1/2 <1分钟的H型QM),观察到了相似的溶剂作用。因此,在每种溶剂条件下,H型QM的t 1/2比G型QM的t 1/2短。在增加水浓度,在变化赤/苏四个二聚体β-O-4产物的比率增加。有趣的是,在50%的水溶液中观察到的pH值对立构偏爱的影响很小,并且随着水浓度增加到
  • Lignin–feruloyl ester cross-links in grasses. Part 2. Model compound syntheses
    作者:John Ralph、Richard F. Helm、Stéphane Quideau
    DOI:10.1039/p19920002971
    日期:——
    single geometrical isomer was produced. Synthesis of both isomers of derived compounds and detailed NMR analysis indicated that this was the expected Z-isomer. A model for β-5 coupled products, 3-[3-carboxy-2-(4-hydroxy-3-methoxyphenyl)-7-methoxy-2,3-dihydrobenzofuran-5-yl]acrylic acid bis(methyl 5-deoxy-α-L-arabinofuranosid-5-yl) ester, was obtained as a cis/trans mixture in 55% yield by radical coupling
    已经合成了五种模拟当阿魏酸酯共聚成木质素时产生的各种结构的化合物。这些模型代表了被认为存在于禾本科中但尚未分离的木质素-阿魏酸酯-多糖结构。完整的光谱表征可提供重要的化学位移信息,以帮助鉴定天然木质素和合成DHP聚合物中的这些键。甲基5- O- 4 - O- [3-羟基-1-(4-羟基-3-甲氧基苯基)-2-(2-甲氧基苯氧基)丙基]阿魏酰} -α - L-阿拉伯呋喃糖苷,α模型阿魏酸酯与木质素的α-键连接,是苏式和赤式的混合物通过将甲基5- O-(E)-阿魏酰基-α- L-阿拉伯呋喃糖苷(FA-Ara)添加到衍生自1-(4-羟基-3-甲氧基苯基)-2-(2-甲氧基苯氧基)的醌甲基化物中的异构体丙烷-1,3-二醇(愈创木脂甘油-β-愈创木脂醚)。甲基5- O- 4 - O- [2-羟基-2-(4-羟基-3-甲氧基-苯基)-1-(羟甲基)乙基]阿魏酰基}-α- L-呋喃糖呋喃糖苷,一种β
  • Formation of lignin alkyl-O-alkyl ether structures <i>via</i> 1,6-addition of aliphatic alcohols to β-O-4-aryl ether quinone methides
    作者:Xuhai Zhu、Dazhi Zhang、Rui Lu、Fang Lu
    DOI:10.1039/d3ob00275f
    日期:——
    structure–reactivity relationship study demonstrates that the competition effect between H-bonds and steric hindrance determines the approaching direction and the accessibility of nucleophiles to planar QMs, resulting in stereo-differentiating formation of adducts. This model experiment may provide implications for the biosynthetic route and structural information of the alkyl-O-alkyl ether structure in lignin.
    醌甲基化物(QM)是木质素生物合成和化学转化过程中的中间体;然后可以通过相应的芳构化显着改变所得木质素的化学结构。本文中,β-O-4-芳基醚QM(GS-QM、GG-QM和GH-QM,它们是带有紫丁香基、愈创木基和对羟基苯基β-醚化芳环的3-单甲氧基化QM)的结构-反应性关系,研究了木质素中烷基-O-烷基醚结构的形成。这些QM的结构特征通过核磁共振波谱进行了表征,并且它们的醇加成实验在25℃下很好地进行,生成烷基-O-烷基/β-O-4产物。GS-QM的优先构象包含γ-OH氢和β-苯氧基氧之间稳定的定向分子内氢键,这使得β-苯氧基与γ-OH位于同一侧。相反,GG-和GH-QM构象中的β-苯氧基距离γ-OH较远;因此,稳定的分子间氢键与γ-OH氢相关。根据紫外光谱,QM 中添加了甲醇和乙醇,半衰期分别为 1.7-2.1 和 12.8-19.3 分钟。对于相同的亲核试剂,这些 QM 反应速度较快,顺序为
  • Chloroaniline/Lignin Conjugates as Model System for Nonextractable Pesticide Residues in Crop Plants
    作者:B. Markus Lange、Norbert Hertkorn、Heinrich Sandermann
    DOI:10.1021/es9801588
    日期:1998.7.1
    In vitro lignins formed by the peroxidase/H2O2-mediated polymerization of coniferyl alcohol in the presence of 3,4-dichloroaniline or [N-15]aniline were studied by H-1, C-13 and N-15 NMR spectroscopy. The anilines were >95% bound to the benzylic a-position of lignin side chains. Mild acid hydrolysis under simulated stomach conditions (0.1 M HCl, 37 degrees C) was studied as a first estimate of animal bioavailability. The two extremes,of facile or slow acid hydrolysis that are known for chloroaniline/lignin-comelexes could be reproduced by using low or high incorporation ratios of aniline to coniferyl alcohol (10 or 40 mol %, respectively). The case of facile a cid hydrolysis and high animal bioavailability may be due to the high; mole ratios used and may not be relevant for pesticidal crop plant residue levels of 3,4-dichloroaniline. The latter are typically in the parts per million range. On the basis of N-15 NMR spectre I fine structure; we propose that the acid-labile linkage may be due to anchimeric assistance in conformers formed at the high aniline molar ratio. The;optimized methods represented here allow the use; of in vitro lignin copolymers as a reference system for the structural features. and the bioavailability of nonextractable pesticide residues in crop plants.
  • Adducts of anthrahydroquinone and anthranol with lignin model quinone methides. 1. Synthesis and characterization
    作者:Lawrence L. Landucci、John Ralph
    DOI:10.1021/jo00139a020
    日期:1982.8
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