Research News, Sept 13th, 2011
One-pot Synthesis and Unpredicted Hydrogen Bonds of the Guanidinium Triflates from Readily Available Amines, Carbodiimides and Zn(OTf)2
Dongzhen Li,Yang Wang,Wen-Xiong Zhang,* Shaoguang Zhang,Jie Guang,and Zhenfeng Xi*
Organometallics 2011, DOI: 10.1021/om2006613, on line
The first synthesis of tri-substituted guanidinium triflates has been achieved by a simple one-step procedure from readily available amines, carbodiimides and Zn(OTf)2. X-ray analysis revealed they adopt 1-D chain-like or novel 3-D hydrogen-bonded networks, which are not reported previously in the solid structure of guanidinium salts. Isolation of a binuclear zinc complex and its subsequent carbodiimide insertion provide the insight into the mechanism for the formation of guanidinium triflates.