bis(3-methyl-2-pyridyl)ketone

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: bis(3-methyl-2-pyridyl)ketone
• 英文别名: Bis(3-methylpyridin-2-yl)methanone
• 化学式: C₁₃H₁₂N₂O
• 分子量: 212.251
• InChiKey: ZUAHDARLKZTIFQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.15
• 拓扑面积：
  42.8
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  2-溴-3-甲基吡啶 、 碳酸二乙酯 在 正丁基锂 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 1.0h， 以61%的产率得到bis(3-methyl-2-pyridyl)ketone
  参考文献：
  名称：

  Efficient Synthesis of a Porphyrin−N-Tripod Conjugate with Covalently Linked Proximal Ligand:  Toward New-Generation Active-Site Models of Cytochrome c Oxidase

  摘要：

  [GRAPHICS]A new generation cytochrome c oxidase active-site model compound (4) featuring both a trisimidazolyl moiety and a proximal base has been designed and efficiently synthesized. During this study, a facile method based on the chemistry of a 4 magnesioimidazole derivative to synthesize 4-imidazolyl-containing tripodal ligands (7) has been developed.

  DOI：

  10.1021/ol9911730

文献信息

• A process for producing a diolefin polymer or copolymer and a rubber composition containing such a diolefin polymer or copolymer
  申请人：BRIDGESTONE CORPORATION

  公开号：EP0609010A2

  公开（公告）日：1994-08-03

  A process for producing a diolefin polymer or copolymer, comprising the steps of polymerizing 55-100 wt% of a conjugated diolefin with 0-45 wt% of an aromatic vinyl compound as monomers in a hydrocarbon as a solvent, by using initiators: a reaction product [a1] between at least one secondary amine compound (A) and an organic lithium compound and/or a lithium amide compound [a2] of the at least one secondary amine compound (A) as well as a reaction product [b1] between at least one alcohol (B) and an organic lithium compound and/or a lithium alkoxide compound of the at least one alcohol (B). A rubber composition containing not less than 30 wt% of such a diolefin polymer or copolymer with respect to an entire rubber component is also disclosed. This rubber composition exhibits excellent abrasion resistance, high tensile strength, steering stability and low rolling resistance, and is suitable for tires, particularly, as treads of low fuel consumption tires.

  一种生产二烯烃聚合物或共聚物的工艺，包括以下步骤：以烃类为溶剂，使用引发剂使 55-100 wt%的共轭二烯烃与 0-45 wt%的芳香乙烯基化合物作为单体聚合：至少一种仲胺化合物（A）与有机锂化合物和/或至少一种仲胺化合物（A）的锂酰胺化合物[a2]之间的反应产物[a1]，以及至少一种醇（B）与有机锂化合物和/或至少一种醇（B）的锂烷氧基化合物之间的反应产物[b1]。此外，还公开了一种橡胶组合物，其中二烯烃聚合物或共聚物的含量不低于整个橡胶组分的 30%。这种橡胶组合物具有优异的耐磨性、高拉伸强度、转向稳定性和低滚动阻力，适用于轮胎，特别是低油耗轮胎的胎面。
• MODIFIED CONJUGATED DIENE POLYMER, POLYMER COMPOSITION, AND RUBBER COMPOSITION
  申请人：Asahi Kasei Kabushiki Kaisha

  公开号：EP3617237A1

  公开（公告）日：2020-03-04

  A modified conjugated diene-based polymer according to the present invention has a weight average molecular weight of 20 × 104 or more and 300 × 104 or less, has a molecular weight distribution Mw/Mn of 1.6 or more and 4.0 or less, has a modification ratio of 30% by mass or more and 80% by mass or less with respect to a total amount of the conjugated diene-based polymer, and includes 5% by mass or more and 50% by mass or less of a component having a molecular weight of 1,000,000 or more and 5,000,000 or less in GPC (gel permeation chromatography), wherein a modification ratio of the component having a molecular weight of 1,000,000 or more and 5,000,000 or less is 90% by mass or more and 100% by mass or less.

  根据本发明，一种改性共轭二烯基聚合物的重量平均分子量为 20×104 或以上，300×104 或以下；分子量分布 Mw/Mn 为 1.6 或以上，4.0 或以下，相对于共轭二烯基聚合物的总量，其改性率为 30% （以质量计）或以上和 80% （以质量计）或以下，并且在 GPC（凝胶渗透色谱法）中包含 5% （以质量计）或以上和 50% （以质量计）或以下的分子量为 1,000,000 或以上和 5,000,000 或以下的组分，其中分子量为 1,000,000 或以上和 5,000,000 或以下的组分的改性率为 90% （以质量计）或以上和 100% （以质量计）或以下。
• CONJUGATED-DIENE-BASED RUBBER
  申请人：Zeon Corporation

  公开号：EP3696204A1

  公开（公告）日：2020-08-19

  Provided is a conjugated diene-based rubber comprising a polymer block (A) containing isoprene monomer unit as the main component and a polymer block (B) containing 1,3-butadiene monomer unit as the main component, wherein at least one of the polymer block (A) and the polymer block (B) contains a unit of a vinyl compound having a functional group interactive with silica, the polymer block (A) has a weight average molecular weight (Mw) in the range of 1,000 to 30,000, and the entire conjugated diene-based rubber has a weight average molecular weight (Mw) in the range of 50,000 to 5,000,000.

  本发明提供了一种共轭二烯基橡胶，它由含有异戊二烯单体单元的聚合物嵌段（A）和含有1,3-丁二烯单体单元的聚合物嵌段（B）组成，其中聚合物嵌段（A）和聚合物嵌段（B）中至少有一个含有乙烯基化合物单元，该乙烯基化合物具有与二氧化硅相互作用的官能团、聚合物嵌段（A）的重量平均分子量（Mw）在 1,000 至 30,000 之间，整个共轭二烯基橡胶的重量平均分子量（Mw）在 50,000 至 5,000,000 之间。
• METHOD FOR PRODUCING CONJUGATED DIENE RUBBER
  申请人：Zeon Corporation

  公开号：EP3778654A1

  公开（公告）日：2021-02-17

  A method for producing conjugated diene rubber is provided, comprising: a first step of obtaining a conjugated diene polymer chain having an active end by polymerizing a monomer comprising a conjugated diene compound and a vinyl compound having a functional group interactive with silica using a polymerization initiator in an inert solvent; a second step of reacting a siloxane compound with the active end of the conjugated diene polymer chain having the active end; and a third step of reacting a hydrocarbyloxysilane compound with the conjugated diene polymer chain with which the siloxane compound has been reacted that is obtained in the second step.

  本发明提供了一种生产共轭二烯橡胶的方法，包括第一步，通过在惰性溶剂中使用聚合引发剂聚合由共轭二烯化合物和具有与二氧化硅互作官能团的乙烯基化合物组成的单体，获得具有活性端的共轭二烯聚合物链；第二步，使硅氧烷化合物与具有活性端的共轭二烯聚合物链的活性端反应；以及第三步，使烃基硅氧烷化合物与在第二步中得到的与硅氧烷化合物反应的共轭二烯聚合物链反应。
• POLYFUNCTIONAL VINYL AROMATIC COPOLYMER AND METHOD FOR MANUFACTURING SAME, COPOLYMER RUBBER OBTAINED THEREFROM, RUBBER COMPOSITION, RUBBER CROSSLINKED MATERIAL, AND TIRE MEMBER
  申请人：NIPPON STEEL Chemical & Material Co., Ltd.

  公开号：EP3858877A1

  公开（公告）日：2021-08-04

  Provided is a polyfunctional vinyl aromatic copolymer having reactivity and solubility that can be used for manufacturing a copolymer rubber and a copolymer rubber material having processability, strength and homogeneity obtained therefrom. The polyfunctional vinyl aromatic copolymer includes: 0.5 mol% or more and 40 mol% or less of a structural unit (a) derived from a divinyl aromatic compound and 60 mol% or more and 99.5 mol% or less of a structural unit (b) derived from a monovinyl aromatic compound, in which at least some of the structural units (a) are a crosslinked structural unit (a2) represented by the following Formula (2) and a vinyl-group-containing structural unit (a1) represented by the following Formula (1): (in the formulas, R1's independently represent an aromatic hydrocarbon group having 6 to 30 carbon atoms), wherein the molar fraction of the crosslinked structural unit (a2) with respect to the structural unit (a) is within a range of 0.05 to 0.50, the molar fraction of the vinyl-group-containing structural unit (a1) with respect to the total amount of the structural units (a) and (b) is within a range of 0.001 to 0.35, the number average molecular weight Mn of the polyfunctional vinyl aromatic copolymer is 1,000 to 50,000, and the molecular weight distribution (Mw/Mn) represented by the ratio of the weight average molecular weight Mw to the number average molecular weight Mn is 8.0 or less.

  本发明提供了一种具有反应性和溶解性的多官能度乙烯基芳香族共聚物，可用于制造共聚橡胶，以及由此获得的具有加工性、强度和均匀性的共聚橡胶材料。多官能团乙烯基芳香族共聚物包括0.5摩尔％或更多且40摩尔％或更少的由二乙烯基芳香化合物衍生的结构单元（a）和60摩尔％或更多且99.5摩尔％或更少的由单乙烯基芳香化合物衍生的结构单元（b），其中至少部分结构单元（a）是由下式（2）表示的交联结构单元（a2）和由下式（1）表示的含乙烯基的结构单元（a1）： (式中，R1's 分别代表具有 6 至 30 个碳原子的芳香烃基），其中 交联结构单元（a2）相对于结构单元（a）的摩尔分数范围为 0.05 至 0.50， 含乙烯基的结构单元（a1）相对于结构单元（a）和（b）总量的摩尔分数范围为 0.001 至 0.35，多官能团乙烯基芳香族共聚物的平均分子量 Mn 为 1,000 至 50,000，由平均分子量 Mw 与平均分子量 Mn 之比表示的分子量分布 (Mw/Mn) 为 8.0 或以下。