一个容易通往功能化的N-异环碳化合物 (NHCs) 的途径,NHC基稳定二二烯
Rajendra S Ghadwal1, Herbert W Roesky, Markus Granitzka
1Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany.
Journal of the American Chemical Society
|July 9, 2010
概括
研究人员合成了一种新型的西替代N-异环碳素 (NHC) 配体. 这种NHC很容易与1-azidoadamantane反应,形成一种独特的三烯,在过渡金属催化中具有潜在的应用.
科学领域:
- 有机金属化学 有机金属化学
- 材料科学 材料科学 材料科学
背景情况:
- N-异环碳 (NHCs) 是有机金属化学中的多功能联体.
- 通过NHC的功能化,可以调整它们的电子和硬质性质.
- 含的NHC提供了独特的反应途径.
研究的目的:
- 为了合成和表征一种新的silyl替代NHC.
- 为了研究基替代NHC与基化合物的反应性.
- 探索合成的NHC作为过渡金属的配体的潜力.
主要方法:
- 合成IPr x SiCl(2) (1). (1) 的合成.
- NHC 1 与1-azidoadamantane 的反应.
- 使用光谱技术对得到的功能化NHC (2) 和三烯 (3) 的表征.
主要成果:
- 从IPr x SiCl(2) (1) 和1-azidoadamantane中成功合成了一种西替代的NHC (2).
- 基替代的NHC (2) 随时与1-azidoadamantane反应,形成一个三基 (3).
- 观察到 triazene 3 中的外环 C=N 键比典型的 NHC 衍生型 triazines 更短.
结论:
- 合成的西替代NHC (2) 与阿齐多阿达曼坦具有轻易反应性.
- 由此产生的三烯 (3) 具有独特的结构特征.
- 新型NHC连接体 (2) 对过渡金属催化中的应用有希望.
相关概念视频
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