Reaction of coordinated isocyanides with substituted N-(2-pyridyl) ureas as a route to new cyclometallated Pd(II) complexes
作者:Kirill K. Geyl、Sergey V. Baykov、Svetlana O. Kasatkina、Polina Yu. Savko、Vadim P. Boyarskiy
DOI:10.1016/j.jorganchem.2022.122518
日期:2022.12
Substituted N-(pyridin-2-yl) ureas or carbamates act as polynucleophiles upon the reaction with palladium(II) bis(isocyanide) complexes at RT to give metallacycles containing azaheterocyclic and urea fragments. Nine new C,N-chelate deprotonated diaminocarbene palladium(II) complexes were synthesized by coupling substituted N-(2-pyridyl)ureas and coordinated isocyanides. The obtained yellow or green-yellow
取代的N- (吡啶-2-基) 脲或氨基甲酸酯在室温下与双(异氰化物) 钯 (II) 配合物反应时充当多亲核试剂,得到含有氮杂杂环和脲片段的金属环。通过偶联取代的N- (2-吡啶基)脲和配位异氰化物,合成了九种新的C,N-螯合去质子化二氨基卡宾钯(II)配合物。获得的黄色或绿黄色物种通过高分辨率质谱和一维(1 H, 13C) 核磁共振光谱。通过单晶 X 射线衍射 (XRD) 阐明了六种固态配合物的结构。这种在温和条件下制备 C^N-环金属化钯 (II) 配合物的通用且方便的方法为靶向合成结合了金属环和母体氮杂杂环的化学、生物和光物理性质的多功能有机金属化合物开辟了道路。