1,1-Dimethylimidazol-1-ium-2-carboxylate

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: 1,1-Dimethylimidazol-1-ium-2-carboxylate
• 英文别名: 1,1-dimethylimidazol-1-ium-2-carboxylate
• 化学式: C6H8N2O2
• 分子量: 140.14
• InChiKey: QTTIXIZOASMFNA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.5
• 重原子数：
  10
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  52.5
• 氢给体数：
  0
• 氢受体数：
  3

文献信息

• LATENT CATALYST SYSTEMS AND PROCESSES FOR THE PRODUCTION OF POLYAMIDES
  申请人：Universität Stuttgart

  公开号：EP3892668A1

  公开（公告）日：2021-10-13

  The invention concerns catalysts systems for the preparation of polyamides, in particular from lactam precursors, which comprise (i) a lactam activator (A) with increased electron deficiency at the intracyclic carbonyl carbon or precursors for the in-situ formation thereof and/or a Lewis acid (L) and (ii) a N-heterocyclic carbene. Corresponding catalysts systems provide for a latent polymerization activity towards lactams, which allows the formation of unreactive catalyst system/monomer mixtures, which can be polymerized by heating the mixture above an activation temperature. In addition, the inventive catalyst systems provide for fast reaction times at comparatively low temperatures and a high monomer conversion. The present invention further concerns processes for the production of polyamides, which employ such catalyst systems, polymerization systems comprising such catalyst systems and polyamide monomers and corresponding polyamides prepared from such process.

  本发明涉及用于制备聚酰胺，特别是由内酰胺前体制备聚酰胺的催化剂体系，该催化剂体系包括：(i) 内环羰基碳或原位形成内环羰基碳的前体上电子缺失增加的内酰胺活化剂（A）和/或路易斯酸（L）；(ii) N-杂环碳烯。相应的催化剂体系对内酰胺具有潜在的聚合活性，可形成无反应的催化剂体系/单体混合物，通过将混合物加热至活化温度以上进行聚合。此外，本发明的催化剂体系在相对较低的温度下反应时间快，单体转化率高。本发明还涉及生产聚酰胺的工艺，该工艺采用了此类催化剂体系、包含此类催化剂体系的聚合体系、聚酰胺单体以及由此类工艺制备的相应聚酰胺。
• COMPOSITIONS OF LOW-K DIELECTRIC SOLS CONTAINING NONMETALLIC CATALYSTS
  申请人：SBA Materials, Inc.

  公开号：EP2915185A1

  公开（公告）日：2015-09-09
• US9589789B2
  申请人：——

  公开号：US9589789B2

  公开（公告）日：2017-03-07
• [EN] COMPOSITIONS OF LOW-K DIELECTRIC SOLS CONTAINING NONMETALLIC CATALYSTS<br/>[FR] COMPOSITIONS DE SOLS À FAIBLE CONSTANTE DIÉLECTRIQUE CONTENANT DES CATALYSEURS NON MÉTALLIQUES
  申请人：SBA MATERIALS INC

  公开号：WO2014071090A1

  公开（公告）日：2014-05-08

  A sol composition for producing a porous low-k dielectric material is provided. The composition can include at least one silicate ester, a polar solvent, water, an acid catalyst for silicate ester hydrolysis, an amphiphilic block copolymer surfactant, and a nonmetallic catalyst that reduces dielectric constant in the produced material. The composition can further include a metallic ion at a lower parts-per-million concentration than the nonmetallic catalyst, and/or the composition can further include a cosolvent. A method of preparing a thin film on a substrate using the sol composition is also provided.