Table 2:

Scope of Iron-catalyzed decarboxylative protonation^[a]

^[a]All reactions were conducted on a 0.4 mmol scale.

^[b]2.5 mol% Fe(NO₃)₃·9H₂O and 2.5 mol% di(2-picolyl)amine were used.

^[c]The yields were determined by ¹H NMR spectroscopy using trimethoxybenzene as an internal standard due to the volatile properties or poor traceability on thin layer chromatography.

^[d]Reaction concentration = 0.05 M; 30 mol% TRIP disulfide were used.

^[e]15 mol% TRIP disulfide were used.