3,3-Dimethyl-1-pyrrolin-N-oxid | 3433-59-8

• 分子结构分类: 有机化合物 - 有机杂环化合物
• 英文名称: 3,3-Dimethyl-1-pyrrolin-N-oxid
• 英文别名: 3,3-Dimethyl-Δ¹-pyrrolin-N-oxid；4,4-dimethyl-3,4-dihydro-2H-pyrrole 1-oxide；4,4-Dimethyl-1-oxido-2,3-dihydropyrrol-1-ium
• CAS: 3433-59-8
• 化学式: C₆H₁₁NO
• 分子量: 113.159
• InChiKey: RQKBFMBSAPFDCT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.1
• 重原子数：
  8
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  28.8
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  苯乙烯 、 3,3-Dimethyl-1-pyrrolin-N-oxid 反应 20.0h， 生成 6,6-Dimethyl-3-phenyl-2-oxa-1-azabicyclo<3.3.0>octan
  参考文献：
  名称：

  吡咯啉系列研究：V. 3,3-二甲基-1-吡咯啉-1-氧化物

  摘要：

  1-乙基-3,3-二甲基吡咯烷-1-氧化物的热解得到1-羟基-3,3-二甲基吡咯烷，其在脱氢时产生3,3-二甲基-1-吡咯啉-1-氧化物。描述了硝酮的鉴定。研究了苯乙烯与该硝酮和 5,5-二甲基-1-吡咯啉-1-氧化物的环加成反应，并从加合物的核磁共振谱推断出加成方向。

  DOI：

  10.1139/v65-381

文献信息

• PREPARATION OF NITRONE DERIVATIVES
  申请人：The Goodyear Tire & Rubber Company

  公开号：US20040122225A1

  公开（公告）日：2004-06-24

  Nitrone derivatives are efficiently prepared by increasing reagent concentrations in reaction solutions. Aldehydes and amines may be condensed to prepare an imine intermediate. Elimination of the solution media generally renders the imine formation more efficient. The imine is then reacted with a peroxysulfate oxidizing agent in a solution having at least about 0.1M concentration of the imine. The oxaziridine is rearranged to produce the nitrone derivative in high yield and good purity.

  通过增加反应溶液中试剂的浓度，可以高效地制备亚硝基衍生物。醛和胺可以缩合以制备二中间体。通常通过除去溶液介质可以使二的形成更高效。然后，在至少约0.1M浓度的二溶液中，将二与过硫酸盐氧化剂反应。氧杂环丙烷被重排以产生高收率和良好纯度的亚硝基衍生物。
• Rubber-containing styrenic resin and process for producing the same
  申请人：Daicel Chemical Industries, Ltd.

  公开号：EP1002812A1

  公开（公告）日：2000-05-24

  The rubber-containing styrenic resin of the present invention comprises a styrenic resin matrix and a rubber component dispersed in particles. In the resin, the graft ratio of a styrenic monomer relative to the rubber component is not less than 1, the particle size of the dispersed rubber component is 0.1 to 3 µm, and the following equation (1) is satisfied:Mn = aT + b    wherein Mn is the number average molecular weight of the matrix resin; T is the conversion of the styrenic monomer; a is a constant greater than 0; and b is a constant of 0 or greater. The rubber component may be a butadiene-series rubber. The particle-size distribution of the dispersed rubber component may have, for example, two peaks. Such styrenic resin can be produced by, in the presence of a rubber component, polymerizing at least a styrenic monomer at a graft ratio of not less than 1 under such conditions that the relationship between the conversion T of the styrenic monomer and the number average molecular weight Mn of the polymer can be approximated by a linear equation. According to the present invention, the morphology and the particle size of rubber particles dispersed in a styrenic resin are controllable.

  本发明的含橡胶苯乙烯树脂包括苯乙烯树脂基体和分散在颗粒中的橡胶组分。在该树脂中，苯乙烯单体相对于橡胶组分的接枝比不小于 1，分散橡胶组分的粒径为 0.1 至 3 µm，并满足下式（1）：Mn = aT + b 其中，Mn 为基体树脂的平均分子量；T 为苯乙烯单体的转化率；a 为大于 0 的常数；b 为 0 或大于 0 的常数。 橡胶成分可以是丁二烯系列橡胶。分散橡胶成分的粒度分布可以有两个峰值。这种苯乙烯树脂可通过在橡胶组分存在的条件下，以不小于 1 的接枝比聚合至少一种苯乙烯单体，使苯乙烯单体的转化率 T 与聚合物的数均分子量 Mn 之间的关系可以用线性方程近似表示。根据本发明，分散在苯乙烯树脂中的橡胶颗粒的形态和粒径是可控的。
• Functionalization of living rubbery polymers with nitrones
  申请人：The Goodyear Tire & Rubber Company

  公开号：EP1739098A2

  公开（公告）日：2007-01-03

  This invention discloses a low cost process that can be used to functionalize living rubbery polymers with terminal nitroxide end-groups to promote interaction between the polymer end-groups and surface functionalities commonly found on carbon black and silica fillers. Such functionalization makes the rubbery polymer more desirable for used in tire tread compositions and other rubber products. This technique more specifically involves reacting a metal terminated living polydiene rubber with a nitrone. The metal will typically be lithium and the polydiene rubber will typically be a polybutadiene rubber, a polyisoprene rubber, a styrene-butadiene rubber, a styrene-isoprene-butadiene rubber, an isoprene-butadiene rubber, or a styrene-isoprene rubber.

  本发明公开了一种低成本工艺，可用于用末端亚硝基端基对活体橡胶聚合物进行官能化，以促进聚合物端基与碳黑和二氧化硅填料上常见的表面官能团之间的相互作用。这种官能化使橡胶聚合物更适合用于轮胎胎面组合物和其他橡胶产品。更具体地说，这种技术是将金属端接的活聚二稀橡胶与腈酮反应。金属通常是锂，聚二烯橡胶通常是聚丁二烯橡胶、聚异戊二烯橡胶、丁苯橡胶、丁苯异戊二烯橡胶、异戊二烯丁二烯橡胶或丁苯异戊二烯橡胶。
• Rubber-containing sytrenic resin and process for producing the same
  申请人：Daicel Chemical Industries, Ltd.

  公开号：US20020052447A1

  公开（公告）日：2002-05-02

  The rubber-containing styrenic resin of the present invention comprises a styrenic resin matrix and a rubber component dispersed in particles. In the resin, the graft ratio of a styrenic monomer relative to the rubber component is not less than 1, the particle size of the dispersed rubber component is 0.1 to 3 &mgr;m, and the following equation (1) is satisfied: Mn=aT+b (1) wherein Mn is the number average molecular weight of the matrix resin; T is the conversion of the styrenic monomer; a is a constant greater than 0; and b is a constant of 0 or greater. The rubber component may be a butadiene-series rubber. The particle-size distribution of the dispersed rubber component may have, for example, two peaks. Such styrenic resin can be produced by, in the presence of a rubber component, polymerizing at least a styrenic monomer at a graft ratio of not less than 1 under such conditions that the relationship between the conversion T of the styrenic monomer and the number average molecular weight Mn of the polymer can be approximated by a linear equation. According to the present invention, the morphology and the particle size of rubber particles dispersed in a styrenic resin are controllable.

  本发明的含橡胶苯乙烯树脂包括苯乙烯树脂基体和分散在颗粒中的橡胶组分。在树脂中，苯乙烯单体相对于橡胶组分的接枝比不小于 1，分散橡胶组分的粒径为 0.1 至 3 &mgr;m，并满足以下公式 (1)： Mn=aT+b (1) 其中，Mn 为基体树脂的平均分子量；T 为苯乙烯单体的转化率；a 为大于 0 的常数；b 为 0 或大于 0 的常数。 橡胶成分可以是丁二烯系列橡胶。分散橡胶成分的粒度分布可以有两个峰值。这种苯乙烯树脂可通过在橡胶组分存在的条件下，以不小于 1 的接枝比聚合至少一种苯乙烯单体，使苯乙烯单体的转化率 T 与聚合物的数均分子量 Mn 之间的关系可以用线性方程近似表示。根据本发明，分散在苯乙烯树脂中的橡胶颗粒的形态和粒径是可控的。
• US6333381B1
  申请人：——

  公开号：US6333381B1

  公开（公告）日：2001-12-25