An improved synthesis of 4-cyano-1,10-phenanthroline, 4,7-dicyano-1,10-phenanthroline and their bis(4,4′-di-tert-butyl-2,2′-bipyridine)ruthenium(II) complexes
摘要:
This report describes a new palladium catalyzed synthesis of 4-cyano-1,10-phenanthroline (nphen, 1), 4,7-dicyano-1,10-phenanthroline (dnphen, 2) and their corresponding ruthenium complexes. The two cationic complexes, [(tbbpy)(2)Ru(nphen)](2+) 3 and [(tbbpy)(2)Ru(dnphen)](2+) 4 (tbbpy = 4,4'-di-tert-butyl-2,2'-bipyridine), were synthesized using an improved microwave procedure. All compounds were fully characterized, including the solid-state molecular structures of the complexes. The influence of 1 and 2 on the metal-to-ligand charge transfer (MLCT) transitions were studied and compared to the ruthenium(II) polypyridyl complexes containing the related 4,4'-dicyano-2,2'-bipyridine (dnbpy) and the non-functionalized 1,10-phenanthroline (phen) ligand. (C) 2014 Elsevier Ltd. All rights reserved.
An improved synthesis of 4-cyano-1,10-phenanthroline, 4,7-dicyano-1,10-phenanthroline and their bis(4,4′-di-tert-butyl-2,2′-bipyridine)ruthenium(II) complexes
摘要:
This report describes a new palladium catalyzed synthesis of 4-cyano-1,10-phenanthroline (nphen, 1), 4,7-dicyano-1,10-phenanthroline (dnphen, 2) and their corresponding ruthenium complexes. The two cationic complexes, [(tbbpy)(2)Ru(nphen)](2+) 3 and [(tbbpy)(2)Ru(dnphen)](2+) 4 (tbbpy = 4,4'-di-tert-butyl-2,2'-bipyridine), were synthesized using an improved microwave procedure. All compounds were fully characterized, including the solid-state molecular structures of the complexes. The influence of 1 and 2 on the metal-to-ligand charge transfer (MLCT) transitions were studied and compared to the ruthenium(II) polypyridyl complexes containing the related 4,4'-dicyano-2,2'-bipyridine (dnbpy) and the non-functionalized 1,10-phenanthroline (phen) ligand. (C) 2014 Elsevier Ltd. All rights reserved.
POLYMERS FUNCTIONALIZED WITH HETEROCYCLIC NITRILE COMPOUNDS
申请人:Luo Steven
公开号:US20090099325A1
公开(公告)日:2009-04-16
A method for preparing a functionalized polymer, the method comprising the steps of preparing a reactive polymer and reacting the reactive polymer with a heterocyclic nitrile compound.
An object of the present invention is to provide a rubber composition which not only realizes sufficiently low heat generation properties but also exhibits more excellent crack growth resistance than the conventional rubber composition. The rubber composition contains in 100 mass% of rubber components thereof: 20-80 mass% of natural rubber in which the total nitrogen content in natural rubber latex is in the range of 0.1 mass% to 0.4 mass% (exclusive of 0.1 mass% and inclusive of 0.4 mass%); and butadiene-based polymer having cis content of 90% or higher.
RUBBER COMPOSITION, METHOD FOR PRODUCING RUBBER COMPOSITION, AND TIRE
申请人:Bridgestone Corporation
公开号:EP3608363A1
公开(公告)日:2020-02-12
An object of the present disclosure is to provide a rubber composition having satisfactorily low hysteresis loss, while maintaining high wear resistance. In order to achieve the object, a rubber composition contains: a rubber component having diene-based rubber therein; and a tetrazine compound.
A method for producing a functionalized polymer, the method comprising the steps of: (i) preparing a bulk polymerization system including a reactive polymer by introducing a lanthanide-based catalyst and a conjugated diene monomer; (ii) adding a heterocyclic nitrile compound the polymerization system including the reactive polymer to prepare polymerization system including a functionalized polymer; and (iii) adding a protic compound to the polymerization system including a functionalized polymer where the ratio of water or protic hydrogen atoms in the protic compound to the lanthanide atoms in the lanthanide-based catalyst is at least 1500 to 1.
一种生产官能化聚合物的方法,该方法包括以下步骤(i) 通过引入镧系催化剂和共轭二烯单体,制备包括反应性聚合物的大块聚合体系; (ii) 向包括反应性聚合物的聚合体系中加入杂环腈化合物,制备包括官能化聚合物的聚合体系; 以及 (iii) 向包括官能化聚合物的聚合体系中加入原生化合物,其中原生化合物中的水或原生氢原子与镧系催化剂中的镧系原子之比至少为 1500 比 1。
Polymers functionalized with heterocyclic nitrile compounds
申请人:BRIDGESTONE CORPORATION
公开号:US10550203B2
公开(公告)日:2020-02-04
A method for preparing a functionalized polymer, the method comprising the steps of preparing a reactive polymer and reacting the reactive polymer with a heterocyclic nitrile compound.