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1,2,3,8,9,10-hexahydro-3,3,5,6,8,8-hexamethylbenzo<1,2-b:4,3-b'>dipyran | 94883-24-6

中文名称
——
中文别名
——
英文名称
1,2,3,8,9,10-hexahydro-3,3,5,6,8,8-hexamethylbenzo<1,2-b:4,3-b'>dipyran
英文别名
2,3,4,5,6,7-hexahydro-2,2,7,7,9,10-hexamethylbenzo<1,2-b:4,3-b'>dipyran;3,3,5,6,8,8-hexamethyl-1,2,3,8,9,10-hexahydropyrano[3,2-f]chromene;3,3,5,6,8,8-hexamethyl-1,2,3,8,9,10-hexahydro-pyrano[3,2-f]chromene;3,3,5,6,8,8-Hexamethyl-1,2,3,8,9,10-hexahydro-pyrano[3,2-f]chromen;3,3,5,6,8,8-hexamethyl-1,2,9,10-tetrahydropyrano[3,2-f]chromene
1,2,3,8,9,10-hexahydro-3,3,5,6,8,8-hexamethylbenzo<1,2-b:4,3-b'>dipyran化学式
CAS
94883-24-6
化学式
C18H26O2
mdl
——
分子量
274.403
InChiKey
JWLAAHDCGIIDSQ-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

  • 熔点:
    102-104 °C(Solv: hexane (110-54-3); ethyl acetate (141-78-6))
  • 沸点:
    365.9±42.0 °C(Predicted)
  • 密度:
    0.999±0.06 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    4.6
  • 重原子数:
    20
  • 可旋转键数:
    0
  • 环数:
    3.0
  • sp3杂化的碳原子比例:
    0.67
  • 拓扑面积:
    18.5
  • 氢给体数:
    0
  • 氢受体数:
    2

上下游信息

反应信息

  • 作为反应物:
    描述:
    1,2,3,8,9,10-hexahydro-3,3,5,6,8,8-hexamethylbenzo<1,2-b:4,3-b'>dipyran硫酸 作用下, 以 二氯甲烷 为溶剂, 反应 18.0h, 以96%的产率得到2-bromo-3,8,9,10-tetrahydro-3,3,5,6,8,8-hexamethylbenzo<1,2-b:4,3-b'>dipyran
    参考文献:
    名称:
    Novel tocopherol derivatives. Part 32: On the bromination of pyrano[3,2-f]chromenes related to γ-tocopherol
    摘要:
    While bromination of gamma-tocopherol (2) with elemental bromine affords 5-bromo-gamma-tocopherol quantitatively (3), the analogous reaction of its truncated model compound, 2,2,7,8-tetramethylchromanol (2a) is known to be accompanied by side reactions and to produce hitherto unknown byproducts. These compounds originate from pyrano[3,2-f]chromene (6), a byproduct in the synthesis of model compound 2a, which affords bromochromene 7 as the major product. The reaction mechanism was shown to proceed via chromene 8 and its 1,2-dibromo addition compound 9, which eliminates HBr in an E1 process to finally afford 7. Analytical data including crystal structures of both 6 and 7 are reported. (C) 2011 Elsevier Ltd. All rights reserved.
    DOI:
    10.1016/j.tet.2011.06.070
  • 作为产物:
    参考文献:
    名称:
    Vitamin E. XLIII.1 Synthesis of 2,2,7,8-Tetramethyl-6-hydroxychroman and its Behavior upon Oxidation
    摘要:
    DOI:
    10.1021/ja01237a034
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文献信息

  • Cation radicals in the bromination of benzodipyran derivatives
    作者:Francis M. Dean、Steven N. France、Ulku Oyman
    DOI:10.1016/s0040-4020(01)86189-5
    日期:1988.1
    free aromatic sites in 2,3,4,7,8,9-hexahydro-2, 2,7,7-tetramethylbenzo[1,2-b:4,5-b']dipyran and its angular isomer 1,2,3,8,9,10-hexahydro-3,3,8,8-tetramethylbenzo [1,2-b:4,3-b']dipyran without clear evidence for the intermediacy of cation radicals. When the nuclear sites are methylated [as in (2)] bromine affords a cation radical tribromide (8) and then monohalogenates each aromatic methyl group giving
    攻击2,3,4,7,8,9-六氢-2,2,7,7-四甲基苯并[1,2-b:4,5-b']双喃及其角异构体1中的游离芳香位点,2,3,8,9,10-六氢-3,3,8,8-四甲基苯并[1,2-b:4,3-b']双喃,没有明确的阳离子自由基的中介证据。当核位点被甲基化时(如[2]中所述),提供一个阳离子三化物自由基(8),然后将每个芳香族甲基单卤代,得到5,10-双-(溴甲基)-2,3,4,7,8, 9-hexahydro-2,2.7,7-四甲基苯并[1,2-b:4,5-b']-二喃(10)相反,N-琥珀酰亚胺将两个喃环脱氢和化,得到3,8-二- 2,7-二氢苯并-2,2,5,7,7,10-六甲基[1,2-b:4,5-b']双喃(14)。角异构体与或N-琥珀酰亚胺反应仅喃环响起,给出(21)。较早观察到的1 H nmr线展宽现象,并根据源自6-羟基苯并二氢喃的阳离子
  • Structural features controlling cation-radical line-broadening in the 1H-NMR spectra of phenol derivatives in acid media
    作者:Isam K.L. Al-Khayat、Francis M. Dean、Rajender S. Varma
    DOI:10.1016/s0040-4020(01)86907-6
    日期:1987.1
    of cation radicals from 2,3,4,7-8,9-hexahydro-2,2,5.7,7, 10-hexamethylbenzo[1,2-b; 4,5-b']dipyran (1) and the isomeric benzo[1,2-b; 4,3-b']dipyran (3) have been characterised. The production of cation radical from (1) in acid media is limited by acid concentration for weak acids and also by the presence of oxygen for strong acids. The cation radical species (Ar+) is considered to originate from substrate
    来自2,3,4,7-8,9-六氢-2,2,5.7,7,10-六甲基苯并[1,2-b]的阳离子的六氯酸酯; 4,5-b']双喃(1)和异构体苯并[1,2-b; 已经表征了4,3-b′]双喃(3)。在弱酸中,由(1)在酸性介质中产生的阳离子自由基受到酸浓度的限制,而对于强酸,氧的存在也受到限制。阳离子自由基种类(Ar +)被认为是通过质子化从底物(Ar)产生,然后从中性底物(Ar)进行电子转移; 仅当这种转移在结构上有利时,生物的H-nmr谱线才会展宽。立体化学作用极大地降低了对酸的敏感性,并且在苯-1,2,4-三醇的衍生物中,在一个环中存在两个氧原子是极其不利的。由于阳离子自由基是相当强的酸,因此最好通过醚(通过氧化剂或循环伏安法)研究它们在弱酸介质中的行为。
  • Synthesis of 5-(Fluorophenyl)tocopherols as Novel Dioxin Receptor Antagonists
    作者:Elisabeth Kloser、Stefan Böhmdorfer、Lothar Brecker、Hanspeter Kählig、Thomas Netscher、Kurt Mereiter、Thomas Rosenau
    DOI:10.1002/ejoc.201100178
    日期:2011.5
    E, was chemically combined with differently substituted monofluoro- and difluorophenyl moieties to produce potential antagonists for the human aryl hydrocarbon receptor (AhR). 5-Iodo-γ-tocopherol was a very reliable starting material for the Pd-catalyzed reaction with (fluorophenyl)boronic acids (Suzuki coupling). The ortho- and meta-fluoro-substituted derivatives showed conformational isomerism due
    γ-生育酚是通常称为维生素 E 的必需营养混合物的一种成分,它与不同取代的单和二氟苯基部分化学结合,以产生人类芳烃受体 (AhR) 的潜在拮抗剂。5--γ-生育酚是 Pd 催化与(氟苯基)硼酸反应(Suzuki 偶联)的非常可靠的起始材料。由于围绕芳族键的旋转受限,邻位和间位取代的衍生物显示出构象异构现象。通过NMR光谱研究了这种效应。其中三种衍生物在测定中显示出非常高的效力,是进一步测试的有希望的候选者。
  • Vitamin E Chemistry. Nitration of Non-α-tocopherols:  Products and Mechanistic Considerations
    作者:Anjan Patel、Falk Liebner、Thomas Netscher、Kurt Mereiter、Thomas Rosenau
    DOI:10.1021/jo0706832
    日期:2007.8.1
    In contrast to the α-form permethylated at the aromatic ring, non-α-tocopherols possess free aromatic ring positions which enable them to act as potent scavengers of electrophiles in vivo and in vitro. In preparation of enzymatic studies involving peroxynitrite and other nitrating systems, the behavior of non-α-tocopherols under nitration conditions was studied. The nitration products of β-, γ-, and
    与在芳环上被甲基化的α-形式相反,非α-生育酚具有游离的芳环位置,这使它们能够在体内和体外充当亲电试剂的有效清除剂。在准备涉及过氧亚硝酸盐和其他硝化系统的酶研究时,研究了非α-生育酚在硝化条件下的行为。鉴定,全面分析表征了β-,γ-和δ-生育酚的硝化产物,并通过对截短的模型化合物进行X射线晶体结构分析来支持其结构。即使在更剧烈的硝化条件下,2-C下也不会发生立体化学腐蚀。重新检查了γ-生育酚δ-生育酚的亚硝化,邻苯二酚,仅在γ-生育酚的情况下,在升高的温度下才释放羟胺,以提供稳定的邻苯二酚δ-生育酚的单硝化选择性地在位置5进行。该选择性可以通过应变诱导键定位(SIBL)到醌型硝化中间体的理论来解释。双硝化对第一个硝基基团的影响很小,因此在正常硝化条件下提供过量硝化物种的情况下,仅发现了双硝化产物。
  • The Chemistry of Vitamin E. XVII. The Oxidation Products of α-Tocopherol and of Related 6-Hydroxychromans
    作者:Lee Irvin. Smith、Willa B. Irwin、Herbert E. Ungnade
    DOI:10.1021/ja01878a047
    日期:1939.9
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