使用光谱和分析技术合成并表征了具有通式 [ N -(Ar), N '-(Ar')] 的八种N , N '-二苯基甲脒。四个是对称的(Ar = Ar'),而其他四个是不对称的(Ar ≠ Ar')。使用单晶 X 射线衍射表征了其中的五种化合物。固态结构分析显示两种分子异构体,E syn和E anti。空间和电子在特定的异构体和构象中发挥作用,并直接影响其晶体结构中的分子间相互作用。全鄂反发现异构体形成具有 R 2 2 (8) 图集描述符的二聚分子单元,而E顺异构体形成一维超分子链。此外,发现 C–H⋯π、π⋯π 和 Cl⋯Cl 分子间相互作用支持E顺式异构体中经典的 N–H⋯N 氢键。分子配对相互作用能计算表明,静电能 ( E ele ) 对E反异构体的贡献大于色散能 ( E dis ) ,但对称的甲脒除外,在芳环上有大量取代基。Ë SYNE dis比E ele具有相对较高的贡献,但E syn
PREPARATION OF SATURATED IMIDAZOLINIUM SALTS AND RELATED COMPOUNDS
申请人:Kuhn Kevin
公开号:US20110087032A1
公开(公告)日:2011-04-14
Methods for the preparation of saturated imidazolinium salts and related compounds that comprises reaction of formamidines with compounds such as dihaloethane and an optional base are disclosed. Alternatively, the imidazolinium salts and related compounds can be prepared in a one-step process without purification of the formamidine reactant. These methods make it possible to obtain numerous imidazolinium salts and related compounds under solvent-free reaction conditions and in excellent yields.
Preparation of saturated imidazolinium salts and related compounds
申请人:Kuhn Kevin
公开号:US08703965B2
公开(公告)日:2014-04-22
Methods for the preparation of saturated imidazolinium salts and related compounds that comprises reaction of formamidines with compounds such as dihaloethane and an optional base are disclosed. Alternatively, the imidazolinium salts and related compounds can be prepared in a one-step process without purification of the formamidine reactant. These methods make it possible to obtain numerous imidazolinium salts and related compounds under solvent-free reaction conditions and in excellent yields.
A process for the preparation of symmetric and unsymmetric imidazolinium chlorides that involves reaction of a formamidine with dichloroethane and a base (a) is described. This method makes it possible to obtain numerous imidazolinium chlorides under solvent-free reaction conditions and in excellent yields with purification by simple filtration. Alternatively, symmetric imidazolinium chlorides can be prepared directly in moderate yields from substituted anilines by utilizing half of the formamidine intermediate as sacrificial base (b).
US8703965B2
申请人:——
公开号:US8703965B2
公开(公告)日:2014-04-22
[EN] PREPARATION OF SATURATED IMIDAZOLINIUM SALTS AND RELATED COMPOUNDS<br/>[FR] PRÉPARATION DE SELS D'IMIDAZOLINIUM SATURÉS ET COMPOSÉS ASSOCIÉS
申请人:MATERIA INC
公开号:WO2009062171A1
公开(公告)日:2009-05-14
Methods for the preparation of saturated imidazolinium salts and related compounds that comprises reaction of formamidines with compounds such as dihaioethane and an optional base are disclosed. Alternatively, the imidazoünium salts and related compounds can be prepared in a one-step process without purification of the formamidine reactant. These methods make it possible to obtain numerous imidazolinium salts and related compounds under solvent-free reaction conditions and in excellent yields.