| 170514-86-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• CAS: 170514-86-0
• 化学式: C₁₆H₁₈N₄NiO
• 分子量: 341.035
• InChiKey: FJJHPIJCQPDQOL-UHFFFAOYSA-M

反应信息

• 作为反应物：
  描述：

  、 以 乙醇 为溶剂， 以52%的产率得到
  参考文献：
  名称：

  Easy synthesis of ‘half-units’: their use as ligands or as precursors of non-symmetrical Schiff base complexes

  摘要：

  This paper is devoted to a particular reaction able to give singly condensed Schiff base derivatives of beta-diketones (called 'half-units') in an easy way. Indeed, 1,2-diamino-2-methylpropane, which possesses an amine function sterically hindered by two methyl groups, reacts with a diketone such as 2,4-pentanedione or 2-hydroxyacetophenone only by its non-hindered amine function, yielding a 'half-unit'. In a following step, this terdentate ligand can react with an aldehyde function to give a non-symmetrical tetradentate Schiff base. Such a reaction can be performed on the free 'half-unit' or on its 'complexed form'. Some examples of nickel and copper complexes are given. A particular interest has been given to the use of imidazole-2-carboxaldehyde which yields non-symmetrical Schiff base complexes with a free nitrogen atom not included in the N3O coordination site. According to the procedure of 'complexes as ligands', it is possible to isolate bimetallic complexes with imidazole bridges. Their genuine identity has been confirmed by NMR (nickel) and also by thermal variation of the magnetic susceptibility (copper).

  DOI：

  10.1016/0020-1693(95)04641-l
• 作为产物：
  描述：

  在 sodium hydroxide 作用下， 以 sodium hydroxide 为溶剂， 以70%的产率得到
  参考文献：
  名称：

  Easy synthesis of ‘half-units’: their use as ligands or as precursors of non-symmetrical Schiff base complexes

  摘要：

  This paper is devoted to a particular reaction able to give singly condensed Schiff base derivatives of beta-diketones (called 'half-units') in an easy way. Indeed, 1,2-diamino-2-methylpropane, which possesses an amine function sterically hindered by two methyl groups, reacts with a diketone such as 2,4-pentanedione or 2-hydroxyacetophenone only by its non-hindered amine function, yielding a 'half-unit'. In a following step, this terdentate ligand can react with an aldehyde function to give a non-symmetrical tetradentate Schiff base. Such a reaction can be performed on the free 'half-unit' or on its 'complexed form'. Some examples of nickel and copper complexes are given. A particular interest has been given to the use of imidazole-2-carboxaldehyde which yields non-symmetrical Schiff base complexes with a free nitrogen atom not included in the N3O coordination site. According to the procedure of 'complexes as ligands', it is possible to isolate bimetallic complexes with imidazole bridges. Their genuine identity has been confirmed by NMR (nickel) and also by thermal variation of the magnetic susceptibility (copper).

  DOI：

  10.1016/0020-1693(95)04641-l