4-Methyl-5-ethyl-pyrocatechol | 18087-16-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 酚类
• 英文名称: 4-Methyl-5-ethyl-pyrocatechol
• 英文别名: 4-ethyl-5-methyl-pyrocatechol；4.5-Dihydroxy-1-methyl-2-aethyl-benzol；4-Aethyl-5-methyl-brenzcatechin；4-Ethyl-5-methyl-1,2-benzenediol；4-ethyl-5-methylbenzene-1,2-diol
• CAS: 18087-16-6
• 化学式: C₉H₁₂O₂
• 分子量: 152.193
• InChiKey: QQAYDUPAKYYOFK-UHFFFAOYSA-N

物化性质

• 沸点：
  160-165 °C(Press: 20 Torr)
• 密度：
  1.124±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  11
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  4-Methyl-5-ethyl-pyrocatechol 、 4-硝基苯甲酰氯 在 吡啶 作用下， 生成 1-ethyl-2-methyl-4,5-bis-(4-nitro-benzoyloxy)-benzene
  参考文献：
  名称：

  92.α-和β-羟基月桂肌苷。第二部分 彻底甲基化的产物

  摘要：

  DOI：

  10.1039/jr9370000427
• 作为产物：
  描述：

  3,4-二甲氧基甲苯 在 盐酸 、 三氯化铝 、 氢碘酸 、 汞 、 锌 作用下， 以 二硫化碳 为溶剂， 生成 4-Methyl-5-ethyl-pyrocatechol
  参考文献：
  名称：

  Aliphatic semidiones. XV. 2,3-Semidiones derived from the bicyclo[n.1.0]alkanes

  摘要：

  DOI：

  10.1021/ja00735a022

文献信息

• MODIFIER FOR AROMATIC POLYESTER AND AROMATIC POLYESTER RESIN COMPOSITION COMPRISING THE SAME
  申请人：TABATA Masayoshi

  公开号：US20110224343A1

  公开（公告）日：2011-09-15

  The present invention provides a modifier for aromatic polyesters which enhances the melt fluidity of aromatic polyesters without a significant decrease in the heat resistance of the aromatic polyesters, and an aromatic polyester resin composition including the modifier for aromatic polyesters. The present invention relates to a modifier for aromatic polyesters comprising polyhydric phenol residues and residues of aromatic polycarboxylic acid, acid halide or acid anhydride thereof, and the modifier comprises a material having a structure composed of a first residue selected from the group consisting of divalent residues represented by Formula (I): —Ar—W 1 x —Ar— and by Formula (II): —Ar—, the first residues being bonded to two identical or different second residues selected from the group consisting of monovalent residues represented by Formula (III): and monovalent residues represented by Formula (IV): —O—C(O)—R 7 —.

  本发明提供了一种用于芳香族聚酯的改性剂，可以增强芳香族聚酯的熔融流动性，而不明显降低芳香族聚酯的耐热性，以及包括该改性剂的芳香族聚酯树脂组合物。本发明涉及一种用于芳香族聚酯的改性剂，包括多羟基酚残基和芳香族多羧酸、酸卤或其酸酐残基，该改性剂包括具有以下结构的材料：第一残基，选择自由式(I)所代表的二价残基：—Ar—W1x—Ar—和自由式(II)所代表的：—Ar—，第一残基与选择自由式(III)所代表的单价残基：和自由式(IV)所代表的单价残基：—O—C(O)—R7—的两个相同或不同的第二残基结合。
• Soluble late transition metal catalysts for olefin oligomerizations III
  申请人：Zhao Baiyi

  公开号：US20060036049A1

  公开（公告）日：2006-02-16

  A series of soluble α-diimine late transition metal catalysts has been invented comprising a substituted or unsubstituted catecholate ligand. The catalysts demonstrate high activity and selectivity for linear α-olefins. As such, these catalysts conveniently oligomerize ethylene. Typical activators as known to those of ordinary skill in the art are used to activate these transition metal catalysts. These catalysts can be used in a supported or unsupported form.

  一系列可溶性的α-二亚胺后过渡金属催化剂已经被发明，其中包括取代或未取代的邻苯二酚配体。这些催化剂表现出高活性和线性α-烯烃的高选择性。因此，这些催化剂方便地可以使乙烯寡聚化。通常的活化剂，如对于普通技术人员而言是已知的，被用来激活这些过渡金属催化剂。这些催化剂可以以支持或不支持的形式使用。
• AROMATIC POLYESTER
  申请人：Muroran Institute of Technology

  公开号：EP2479203A1

  公开（公告）日：2012-07-25

  The present invention provides an aromatic polyester which is substantially free from the occurrence of coloration and retains significantly high transparency even after being thermally processed at high temperature and which has high flowability. The aromatic polyester contains a polyhydric phenol residue and a residue of any one of aromatic polycarboxylic acid, halide thereof, and anhydride thereof, and terminals of the aromatic polyester have a structure represented by the formula -C(O)-R. The aromatic polyester has an end-capping rate of 90% or higher and a weight average molecular weight (Mw) ranging from 3,000 to 1,000,000.

  本发明提供了一种芳香族聚酯，该聚酯基本上不会发生着色，即使在高温热加工后仍能保持明显的高透明度，并且具有高流动性。芳香族聚酯含有多羟基苯酚残留物和芳香族多羧酸、其卤化物和其酸酐中任意一种的残留物，芳香族聚酯的端基具有式 -C(O)-R 所代表的结构。芳香族聚酯的端盖率为 90% 或更高，重量平均分子量（Mw）为 3,000 至 1,000,000 之间。
• SOLUBLE LATE TRANSITION METAL CATALYSTS FOR OLEFIN OLIGOMERIZATIONS III
  申请人：ExxonMobil Chemical Patents Inc.

  公开号：EP1620447A1

  公开（公告）日：2006-02-01
• VERBINDUNGEN FÜR ELEKTRONISCHE VORRICHTUNGEN
  申请人：Merck Patent GmbH

  公开号：EP2705550B1

  公开（公告）日：2017-07-05