An unique long-range 1,7-bromination reaction is observed in gold(III) complexes of N-(aryl)imino functionalized N-heterocyclic carbene with the bromination occurring at two different carbon (sp2 and sp3) centers spatially separated by ca. 6.4 Å but existing in extended conjugation to each other. In particular, the unusual distant 1,7-brominated gold(III) complexes [1-R-3-N-(p-bromo-2,6-di-i-propylphenylimino)-2-phenyl-1-bromoethyl}imidazol-2-ylidene]AuBr3 [R = Me (1d), i-Pr (2d), t-Bu (3d), –CH2Ph (4d)] were synthesized cleanly at room temperature under ambient conditions from the reactions of molecular bromine with the gold(I) complexes [1-R-3-N-(2,6-di-i-propylphenylimino)-2-phenylethyl}imidazol-2-ylidene]AuCl [R = Me (1c), i-Pr (2c), t-Bu (3c), –CH2Ph (4c)]. All of the 1,7-bromination products (1d, 2d, 3d and 4d) have been structurally verified by X-ray diffraction studies.
在N-(芳基)亚
氨基官能化的N-杂环炔
金(III)配合物中观察到了一种独特的1,7-
溴化反应,
溴化作用发生在两个不同的碳(sp2和sp3)中心,两者相距约6.4 Å,但彼此之间存在扩展共轭。特别是,在室温下,通过分子
溴与
金(I)配合物[1-R-3-N-(2,6-二异丙基苯亚
氨基)-2-苯基乙基}
咪唑-2-亚基]AuCl[R = Me (1c)、i-Pr (2c)、t-Bu (3c)、–CH2Ph (4c)]的反应,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下,在室温下