棉子皮亭-3,3,4,7-四甲醚 | 7380-44-1

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 黄酮类化合物
• 中文名称: 棉子皮亭-3,3,4,7-四甲醚
• 中文别名: 棉子皮亭-3,3',4',7-四甲醚
• 英文名称: 5,8-dihydroxy-3,7, 3',4'-tetramethoxyflavone
• 英文别名: 5,8-dihydroxy-3,7-dimethoxy-2-(3,4-dimethoxyphenyl)-4-benzopyrone；2-(3,4-dimethoxy-phenyl)-5,8-dihydroxy-3,7-dimethoxy-chromen-4-one；2-(3,4-Dimethoxy-phenyl)-5,8-dihydroxy-3,7-dimethoxy-chromen-4-on；2-(3,4-Dimethoxyphenyl)-5,8-dihydroxy-3,7-dimethoxychromen-4-one
• CAS: 7380-44-1
• 化学式: C₁₉H₁₈O₈
• mdl: MFCD00016925
• 分子量: 374.347
• InChiKey: HVUBHXRYARBAGR-UHFFFAOYSA-N

物化性质

• 熔点：
  250-252 °C(Solv: ethyl acetate (141-78-6))
• 沸点：
  617.1±55.0 °C(Predicted)
• 密度：
  1.44±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  27
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.21
• 拓扑面积：
  104
• 氢给体数：
  2
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  棉子皮亭-3,3,4,7-四甲醚 在 potassium carbonate 、 丙酮 作用下， 生成 8-benzyloxy-2-(3,4-dimethoxy-phenyl)-3,5,7-trimethoxy-chromen-4-one
  参考文献：
  名称：

  Rajagopalan et al., Proceedings - Indian Academy of Sciences, Section A, 1949, # 29, p. 9,13

  摘要：

  DOI：
• 作为产物：
  描述：

  栎精-3,5,7,3,4-五甲醚 在 二甲基二环氧乙烷 、 三溴化硼 作用下， 以 二氯甲烷 、 丙酮 为溶剂， 反应 1.33h， 生成 棉子皮亭-3,3,4,7-四甲醚
  参考文献：
  名称：

  Regioselective hydroxylation of 2-hydroxychalcones by dimethyldioxirane towards polymethoxylated flavonoids

  摘要：

  The flavone nucleus is part of a large number of natural products and medicinal compounds. In this presentation the novel regioselective hydroxylation of hydroxyarenes with DMD is described. The results showed further that flavonoids with 5-hydroxy group were selectively oxyfunctionalized at the para-position C8 carbon atom by DMD. Finally, according to this methodology, the naturally occurring isosinensetin, tangeretin, sinensetin, nobiletin, natsudaidain, gardenin B, 3,3',4',5,6,7,8-heptamethoxyflavone, quercetin and its derivatives were synthesized. (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2004.01.023

文献信息

• Studies of the Selective<i>O</i>-Alkylation and Dealkylation of Flavonoids. XV. A Convenient Synthesis of 3,5,6-Trihydroxy-7-methoxyflavones and Revised Structures of Two Natural Flavones
  作者：Hideaki Tominaga、Tokunaru Horie

  DOI：10.1246/bcsj.66.2668

  日期：1993.9

  tosylate of the 5-hydroxyflavone was selectively cleaved with anhydrous aluminum bromide in acetonitrile to give 6-acetoxy-3-hydroxy-4′,7-dimethoxy-5-(tosyloxy)flavone. 3,6-Dihydroxy-4′,7-dimethoxy-5-(tosyloxy)flavone, a deacetylated product of the flavone, was easily hydrolyzed to the desired 3,5,6-trihydroxy-4′,7-dimethoxyflavone in high yield via the corresponding 6-methoxymethyl ether. Eight 3,5,6-tri

  6-羟基-3,4',5,7-四甲氧基-和5,6-二羟基-3,4',7-三甲氧基黄酮的混合物被转化为6-乙酰氧基-5-羟基-3,4',7 -三甲氧基黄酮通过乙酰化和随后的脱烷基化。5-羟基黄酮甲苯磺酸酯中的 3-甲氧基在乙腈中用无水溴化铝选择性裂解，得到 6-乙酰氧基-3-羟基-4',7-二甲氧基-5-（甲苯磺酰氧基）黄酮。3,6-二羟基-4',7-二甲氧基-5-(甲苯磺酰氧基)黄酮是黄酮的脱乙酰产物，很容易以高产率水解为所需的3,5,6-三羟基-4',7-二甲氧基黄酮通过相应的6-甲氧基甲基醚。用该方法合成了8个3,5,6-三羟基-7-甲氧基黄酮并阐明了它们的性质。此外，两个 3,5,
• Transition metal compound, coordinative compound, catalyst for polymerization of olefin, and process for polymerization of olefin using the catalyst
  申请人：TOSOH CORPORATION

  公开号：US20020120160A1

  公开（公告）日：2002-08-29

  A transition metal compound having a ligand with an azaferrocene structure or a ferrocene structure. The transition metal compound is used in combination with an activating cocatalyst, as a catalyst for polymerization of olefins.

  一种具有氮杂二茂铁结构或二茂铁结构配体的过渡金属化合物。该过渡金属化合物与活化共催化剂结合使用，作为烯烃聚合催化剂。
• Tire with rubber containing flavone
  申请人：THE GOODYEAR TIRE & RUBBER COMPANY

  公开号：EP1391327A1

  公开（公告）日：2004-02-25

  The invention relates to a rubber composition and a pneumatic tire having a component comprising a rubber containing the reaction product of a flavone and a methylene donor.

  本发明涉及一种橡胶组合物和充气轮胎，其成分包括含有黄酮和亚甲基供体反应产物的橡胶。
• Catalyst based on a transition metal complex for polymerization of olefin, and process for polymerization of olefin using the catalyst
  申请人：TOSOH CORPORATION

  公开号：EP1577314A1

  公开（公告）日：2005-09-21

  Catalyst for polymerization of an olefin is provided, which comprises (A) a transition metal compound having a carbon-metal bond structure and (B) an activating co-catalyst, or (A) a transition metal compound having a carbon-metal bond structure, (B) an activating cocatalyst and (C) an organometallic compound.

  提供了用于烯烃聚合的催化剂，它包括（A）具有碳-金属键结构的过渡金属化合物和（B）活化助催化剂，或（A）具有碳-金属键结构的过渡金属化合物、（B）活化助催化剂和（C）有机金属化合物。
• Rubber composition and tire with rubber containing flavone
  申请人：The Goodyear Tire & Rubber Company

  公开号：EP2730431A1

  公开（公告）日：2014-05-14

  A rubber composition comprising a diene based elastomer and an adhesion promoter derived from a flavone, a methylene donor and a methylene acceptor is disclosed. The rubber composition is essentially free of cobalt. Also, a pneumatic tire comprising such a rubber composition is disclosed.

  本发明公开了一种橡胶组合物，该组合物包含一种二烯基弹性体和一种由黄酮、亚甲基供体和亚甲基受体衍生的附着力促进剂。该橡胶组合物基本上不含钴。此外，还公开了一种包含这种橡胶组合物的充气轮胎。