4-chloro-2,6-bis(1,4,7,10-tetraazacyclododecane-4,7,10-tricarboxylic acid-tri-tert-butyl ester-1-yl)-[1,3,5]-triazine 、
5-二甲基氨基萘-1-(n-(2-氨基乙基))磺酰胺 在
potassium carbonate 作用下,
以
1,4-二氧六环 为溶剂,
以75%的产率得到5-dimethylamino-naphthalene-1-sulfonic acid {2-[4,6-bis-(1,4,7,10-tetraaza-cyclododec-1-yl)-[1,3,5]triazin-2-ylamino]-ethyl}-1,4,7-tricarboxylic acid tri-tert-butyl ester