作者:Carlos Alonso-Moreno、Fernando Carrillo-Hermosilla、Andrés Garcés、Antonio Otero、Isabel López-Solera、Ana M. Rodríguez、Antonio Antiñolo
DOI:10.1021/om1003122
日期:2010.6.28
Commercially available products such as ZnEt2 (1), MgBu2 (2), and n-BuLi (3) can act as excellent catalytic precursors for the catalytic addition of amines to carbodiimides. Aromatic primary amines bearing different substituents, secondary amines, and heterocyclic amines can undergo this reaction. The synthesis and structural characterization of the zinc guanidinate complex [Zn(Et)(4-t-BuC6H4)N═C(N-i-Pr)(NH-i-Pr)}]2
诸如ZnEt 2(1),MgBu 2(2)和n -BuLi(3)之类的市售产品可以用作将胺催化加成到碳二亚胺的极好催化前体。带有不同取代基的芳族伯胺,仲胺和杂环胺可以进行该反应。胍基锌络合物[Zn(Et)(4- t -BuC 6 H 4)N═C(N- i- Pr)(NH- i -Pr)}]的合成与结构表征(2(15)以及胍基锂络合物[Li (2,4,6-Me 3 C 6 H 4)N═C(N- i- Pr)(NH- i- Pr)}(THF)的合成与表征(16)都在鸟苷酸化反应中起催化剂的作用,这使我们提出了一种涉及酰胺中间体形成的机理。这些酰胺化合物随后在插入过程中与碳二亚胺反应。