1,4,7-tris[(S)-{(1-ethoxycarbonyl-2-phenyl)ethyl}-carbamoylmethyl]-1,4,7,10-tetraazacyclododecane 、 ytterbium(III) triflate 以
乙腈 为溶剂,
以56%的产率得到[Yb(1,4,7-tris[(S)-((1-ethoxycarbonyl-2-phenyl)ethyl)carbamoylmethyl]-1,4,7,10-tetraazacyclododecane)(H2O)2](triflate)3