Based on our strategic approach, we reasoned that protected imidoyl dichlorides (Scheme 1, 1-3) could serve as appropriate precursors for producing NCF3(PG) anions through their reaction with a fluoride source, thus obtaining the nucleophilic species through three consecutive carbon-fluorine bond formations. Notably, these precursors can be obtained on a multigram scale bearing different protecting groups (> 30 g for Ts 1, > 4 g for Cbz 2, and 7 g for Boc 3) from inexpensive and readily available starting materials (see Supplementary Information for further details). Furthermore, 15 N-labelled imidoyl dichlorides can be readily synthesized as well (> 3 g for [ 15 N]Ts 1), offering access to isotopically labeled 15 NCF3containing products.