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7-t-butyl-2,2,5-trimethyl-6-chromanol | 53891-33-1

中文名称
——
中文别名
——
英文名称
7-t-butyl-2,2,5-trimethyl-6-chromanol
英文别名
7-Tert-butyl-2,2,5-trimethyl-3,4-dihydrochromen-6-ol
7-t-butyl-2,2,5-trimethyl-6-chromanol化学式
CAS
53891-33-1
化学式
C16H24O2
mdl
——
分子量
248.365
InChiKey
FREZFKNZKRBBSQ-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

计算性质

  • 辛醇/水分配系数(LogP):
    4.6
  • 重原子数:
    18
  • 可旋转键数:
    1
  • 环数:
    2.0
  • sp3杂化的碳原子比例:
    0.62
  • 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:
    7-t-butyl-2,2,5-trimethyl-6-chromanollead dioxide 作用下, 以 甲苯 为溶剂, 生成 tocopheroxyl
    参考文献:
    名称:
    ENDOR 维生素 E 模型自由基研究。Chromanyloxyl 环的溶液结构和动力学行为
    摘要:
    ENDOR技术已被用于阐明维生素E自由基中色满氧环的溶液结构和动力学行为。我们在 -30°–-100°C 的温度范围内测量了甲苯中稳定的维生素 E 模型自由基(7-t-丁基-2,2,5-三甲基-6-色满氧基 (1))的 ENDOR 光谱。通过对杂环中β-亚甲基质子超精细耦合的温度依赖性的详细分析,确定了β-亚甲基基团的平衡构象和杂环构象互变的活化能、焓和熵。根据 McLachlan MO 计算,观察到的超精细耦合常数(a5CH3 和 a8H)的正温度依赖性可以解释为色胺氧基环中 C8a-O1 键运动受限的结果。
    DOI:
    10.1246/bcsj.58.2515
  • 作为产物:
    描述:
    2-Methyl-6-tert.-butyl-hydrochinon盐酸 作用下, 以 四氢呋喃甲醇 为溶剂, 反应 3.33h, 生成 7-t-butyl-2,2,5-trimethyl-6-chromanol
    参考文献:
    名称:
    新型稳定生育酚模型自由基的制备和 ESR 研究
    摘要:
    新的生育酚(维生素 E)模型化合物(生育酚 1;7-t-丁基-2,2-二甲基-6-色素醇、生育酚 2;7-t-丁基-2,2,5-三甲基-6-色素醇和生育酚 3; 5,7-二异丙基-2,2-二甲基-6-苯并苯二酚)是通过 2-甲基-3-丁烯-2-醇与相应的烷基氢醌缩合合成的。通过在甲苯中用 PbO 2 氧化苯酚前体,对从上述生育酚模型化合物获得的生育酚自由基进行电子自旋共振测量。确定了质子超精细耦合常数和 giso 值。在两个邻位(C-5 和 C-7)具有大烷基取代基的生育酚自由基 2 和 3 相当稳定,并且自由基稳定性(通过 ESR 信号的强度测量)以生育酚 1<α 的顺序增加-生育酚模型
    DOI:
    10.1246/bcsj.57.3507
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文献信息

  • Kinetic Studies of Antioxidant Activity of New Tocopherol Model Compounds in Solution
    作者:Kazuo Mukai、Satoshi Yokoyama、Kazuyuki Fukuda、Yuichi Uemoto
    DOI:10.1246/bcsj.60.2163
    日期:1987.6
    slightly smaller than those of the corresponding tocopherols having a long-phytyl-chain. The relative ks values (α: β: γ: δ=100 : 53 : 50 : 24), that is, relative antioxidant activities, of α-, β-, γ-, and δ-tocopherol models are in good agreement with those (100 : 44 : 47 : 20) of α-, β-, γ-, and δ-tocopherols. The antioxidant activities of tocopherol models having two alkyl substituents, such as methyl
    10 种生育酚维生素 E)模型化合物与稳定苯氧基自由基乙醇中反应的二级速率常数 ks 已在 25.0°C 下使用停流分光光度计测量,作为生育酚与不稳定苯氧基的模型反应生物系统中的自由基(ROO·、RO·和 HO·)。α-、β-、γ-和δ-生育酚模型的绝对 ks 值与具有长植基链的相应生育酚的绝对ks 值相似或略小。α-、β-、γ-和δ-生育酚模型的相对 ks 值(α: β: γ: δ=100 : 53 : 50 : 24),即相对抗氧化活性与这些模型非常吻合(100 : 44 : 47 : 20) α-、β-、γ-和δ-生育酚。具有两个烷基取代基的生育酚模型的抗氧化活性,如甲基、乙基、异丙基和叔丁基,OH 邻位的 OH 相似,表明空间位阻对反应速率的影响很小。5,7-二甲基生育酚模型具有相当...
  • PROPYLENE COPOLYMER, POLYPROPYLENE COMPOSITION AND USES THEREOF, TRANSITION METAL COMPOUND AND OLEFIN POLYMERIZATION CATALYST
    申请人:Ikenaga Shigenobu
    公开号:US20080312461A1
    公开(公告)日:2008-12-18
    A transition metal compound represented by the following formula (2a):
    一个以以下公式(2a)表示的过渡属化合物:
  • Propylene copolymer, polypropylene composition, and uses thereof, transition metal compounds and catalyst for olefin polymerization
    申请人:Ikenaga Shigenobu
    公开号:US20060276607A1
    公开(公告)日:2006-12-07
    The present invention provides a propylene/1-butene random copolymer (PBR) having excellent flexibility, impact resistance, heat resistance and low-temperature heat-seal properties, a polypropylene composition containg the copolymer, a sheet, film or stretched film comprising the composition and a composite film having a layer of the composition. The propylene/1-butene random copolymer contains 60 to 90 mol % of propylene units and 10 to 40 mol % of 1-butene units and has a triad isotacticity of not less than 85% and not more than 97.5%, a molecular weight distribution (Mw/Mn) of from 1 to 3, an intrinsic viscosity of from 0.1 to 12 dl/g, a melting point (Tm) of from 40 to 120° C., and satisfies the following relation 146 exp(−0.022M)≧ Tm ≧125 exp(−0.032M) wherein Tm represents a melting point and M (mol %) represents a content of 1-butene constituent units. The invention, further, provides a transition metal compound useful as an olefin polymerization catalyst and an olefin polymerization catalyst containing the transition metal compound. The transition metal compound is represented by the following formula (2a): wherein each of R 1 and R 3 is hydrogen, R 2 and R 4 are selected from a hydrocarbon group and silicon-containing group, R 5 to R 13 are selected from hydrogen, a hydrocarbon group and silicon-containing group, and adjacent substituent groups R 5 to R 12 may be linked to form a ring. R 14 is an aryl group, and R 13 and R 14 may be linked to form a ring. M is a Group 4 transition metal, Y is a carbon atom, Q is halogen, etc, and j is an integer of 1 to 4.
    本发明提供一种具有优异的柔韧性、抗冲击性、耐热性和低温热封性能的丙烯/1-丁烯随机共聚物(PBR),以及包含该共聚物的聚丙烯组合物、由该组合物制成的片材、薄膜或拉伸膜以及具有该组合物层的复合膜。该丙烯/1-丁烯随机共聚物含有60到90摩尔%的丙烯单元和10到40摩尔%的1-丁烯单元,三元等规度不小于85%且不大于97.5%,分子量分布(Mw/Mn)为1到3,固有粘度为0.1到12 dl/g,熔点(Tm)为40到120℃,并满足以下关系式146 exp(-0.022M)≥Tm≥125 exp(-0.032M),其中Tm表示熔点,M(摩尔%)表示1-丁烯组分单元的含量。本发明还提供一种过渡属化合物,可用作烯烃聚合催化剂,以及含有该过渡属化合物的烯烃聚合催化剂。该过渡属化合物由以下式(2a)表示:其中R1和R3分别为氢,R2和R4选自烃基和含基,R5到R13选自氢、烃基和含基,相邻的取代基R5到R12可连接形成环。R14为芳基,R13和R14可连接形成环。M为4族过渡属,Y为碳原子,Q为卤素等,j为1到4的整数。
  • Food container
    申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
    公开号:EP0407198A1
    公开(公告)日:1991-01-09
    Disclosed herein is a food container of a resin com­position composed of a polyolefin and an inorganic filler, said resin composition containing (i) a phenolic anti­oxidant and (ii) a slip agent and/or antistatic agent, said phenolic antioxidant being at least one kind selected from β-(4-hydroxy-3-t-butyl-5-alkylphenyl)propionic acid esters, hindered phenols having an isocyanuric acid ester, 1,3,5-tris(3,5-di-t-butyl-4-hydroxybenzyl)-2,4,6-­trimethylbenzene, specific phenol compounds, and 6-­hydroxychroman compounds. The food container has a low level of offensive odors and discoloration.
    本发明公开了一种由聚烯烃和无机填料组成的树脂组合物的食品容器,所述树脂组合物含有(i)酚类抗氧化剂和(ii)滑爽剂和/或抗静电剂、所述酚类抗氧化剂至少有一种选自β-(4-羟基-3-叔丁基-5-烷基苯基)丙酸酯、具有异氰尿酸酯的受阻、1,3,5-三(3,5-二叔丁基-4-羟基苄基)-2,4,6-三甲基苯、特定酚类化合物和 6-羟基色满化合物。食品容器的异味和褪色程度较低。
  • Composition of polypropylene with propylene-butene elastomer
    申请人:MITSUI PETROCHEMICAL INDUSTRIES, LTD.
    公开号:EP0716121A1
    公开(公告)日:1996-06-12
    Disclosed is a polypropylene composition comprising (A) polypropylene and (B) a specific propylene-l-butene random copolymer in a specific amount ratio. The propylene-l-butene random copolymer (B) is characterized in that: (1) the copolymer contains 50 to 95 % by mol of constituent units from propylene and 50 to 5 % by mol of constituent units from 1-butene, (2) the intrinsic viscosity, as measured in decahydronaphthalene at 135 °C, is in the range of 0.1 to 12 dl/g, (3) the molecular weight distribution (Mw/Mn), as determined measured by GPC, is not more than 3, and (4) the parameter B value indicating randomness of the copolymerized monomer sequence distribution is in the range of 1.0 to 1.5. Also disclosed is a polypropylene composite film comprising (I) a crystalline polypropylene layer and (II) a layer formed from the polypropylene composition, which is laminated on at least one surface of the crystalline polypropylene layer (I). The polypropylene composition is excellent in heat resistance and low-temperature heat-sealing properties as well as in flexibility and impact resistance. The polypropylene composite film is excellent in not only heat-sealing properties, particularly low-temperature heat-sealing properties, but also transparency, scratch resistance and blocking resistance.
    本发明公开了一种聚丙烯组合物,该组合物由(A)聚丙烯和(B)特定量比的丙烯-l-丁烯无规共聚物组成。丙烯-l-丁烯无规共聚物(B)的特征在于(1) 以摩尔计,该共聚物含有 50%至 95%的丙烯组成单元和 50%至 5%的 1-丁烯组成单元, (2) 在 135 °C 的十氢中测得的本征粘度范围为 0.(3) 由 GPC 测定的分子量分布 (Mw/Mn) 不超过 3,以及 (4) 表示共聚单体序列分布随机性的参数 B 值在 1.0 至 1.5 的范围内。还公开了一种聚丙烯复合膜,包括 (I) 结晶聚丙烯层和 (II) 由聚丙烯组合物形成的层,该层层叠在结晶聚丙烯层 (I) 的至少一个表面上。聚丙烯组合物具有优异的耐热性、低温热封性、柔韧性和抗冲击性。聚丙烯复合薄膜不仅热封性能优异,特别是低温热封性能优异,而且透明度、抗划伤性和抗阻塞性也很好。
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