FLUORINATION PROCESS OF ANILIDE DERIVATIVES AND BENZOTHIAZOLE FLUORINATE DERIVATIVES AS IN VIVO IMAGING AGENTS

摘要

The invention relates to a process for preparation of a compound of formula (I): R1 is selected from C1-6alkyl, C2-6 alkenyl, and C2-6alkynyl ; which comprises: (i) reaction with fluoride, suitably [18F]fluoride, of a corresponding compound of formula (II): wherein R2 is selected from hydrogen, C1-10alkyl, C1-10haloalkyl, C6-14aryl,C6-14arylalkyl,-(CH2CH2O)q-CH 3wherein q is an integer of from 1 to 10; R1 is as defined for the compound of formula (I); and R3 is a leaving group. Certain novel precursors of formula (II) and radiopharmaceutical kits containing such precursors are also claimed.