关于正方形平面Ni的 [3+2]循环添加反应的研究 (II) 阿齐多复合物:产品的结构,特性和催化应用
Akash Shrivastav1, Raj Kumar Sahani1, Subrato Bhattacharya1
1Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
Inorganic chemistry
|April 22, 2025
概括
本研究探讨了 [3+2] 循环添加反应中的 (II) 亚化合物复合物. 复合物[Ni(N3)(L1) ]在合成pyran衍生物方面表现出更高的反应性和催化效率,实现了显著的营业额.
科学领域:
- 协调化学 协调化学
- 有机金属化学 有机金属化学
- 催化剂是一种催化剂.
背景情况:
- (II) 亚化合物复合物在循环加法反应中被研究其反应性.
- 研究了辅助配体 (L1和L2) 对正方形平面Ni(II) 亚齐多复合物的行为的影响.
研究的目的:
- 为了研究辅助配体对Ni (II) 化物复合物的 [3+2] 循环添加反应的影响.
- 评估这些复合物的催化活性在合成2-amino-3-cyano-4H-pyran衍生物.
主要方法:
- 两个正方形平面Ni(II) 亚化物复合物的合成和特征:[Ni(N3)(L1) ]和[Ni(N3) ((L2) ].
- 研究 [3+2] 循环添加反应与各种二极,包括,2-二,2-二,二,异硫酸和二硫化碳.
- 使用单晶X射线衍射的产品结构的实验确认和通过DFT计算的理论验证.
- 对合成2-amino-3-cyano-4H-pyran衍生物的催化性能进行评估.
主要成果:
- 在 [3+2] 循环添加反应中,[Ni(N3)(L1)] 的反应性高于[Ni(N3)(L2].
- 不同的产品,包括N2-triazolato,同金属 bis ((μ-NN'-triazolato) 和N1-triazolato复合物,根据复合物和反应条件而形成.
- 复合物[Ni(triazolateCOOMe,COOMe-N2)(L1)] (复合物3) 显示出异常的催化活性,用于合成2-amino-3-cyano-4H-pyran衍生物,具有极低的催化剂负载和高的周转率.
- 在环境条件下形成了意想不到的八面体复合体,其中包括[Ni(N3) ((L2) ]和dialkyl acetylene-dicarboxylate.
结论:
- 辅助配体在循环添加反应中显著影响Ni (II) 化物复合物的反应性和产品选择性.
- 二复合物[三酸COOMe,COOMe-N2) L1) 是一种高效和强大的催化剂,用于合成有价值的衍生物.
- 该研究提供了对新型-阿复合物的反应机制和结构特征的见解.
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