A procedure for the radiosynthesis of aliphatic [18F]trifluoromethyl groups by reacting 1,1-difluorovinyl precursors with [18F]fluoride ions, resulting in the equivalent of direct nucleophilic addition of H[18F]F, has been developed. A variety of 18F-labelled model compounds were then obtained and two potential [18F]radiotracers were synthesised by a two step process starting from 1,1-difluorovin-2-yl 4-toluenesulfonate. The method is widely applicable for the synthesis of novel radiotracers in high radiochemical yields and good specific activity.
已经开发了一种通过将1,1-二
氟乙烯前体与[18F]
氟离子反应,合成脂肪族[18F]三
氟甲基团的放射合成程序,结果等同于H[18F]F的直接亲核加成。随后获得了多种18F标记的模型化合物,并通过从1,1-二
氟乙烯-2-基4-
甲苯磺酸酯出发的两步过程合成了两种潜在的[18F]放射示踪剂。该方法广泛适用于合成新颖的放射示踪剂,具有高放射
化学产率和良好的特异性活性。