. Author manuscript; available in PMC: 2011 May 21.

Published in final edited form as: J Org Chem. 2010 May 21;75(10):3332–3338. doi: 10.1021/jo100361d

Table 3.

Arrhenius Activation Energies (E_a) for the Reactions of Diaryliodonium Chlorides with CA [¹⁸F]Fluoride Ion in DMF-0.25% H₂O (in the presence of K⁺-K 2.2.2).


Diaryliodonium chloride		E_a (kcal/mol)

R	R’	R	R’
H	H	20.9 ± 1.6	20.9 ± 1.6
H	2-MeO	22.5 ± 2.9	n.d.
H	2-Me	23.5 ± 1.6	18.3 ± 0.9
2-Me	2-MeO	25.1 ± 2.6	n.d.
2-Me	2-Me	27.5 ± 2.0	27.5 ± 2.0
2-MeO	2-MeO	28.0 ± 1.6	28.0 ± 1.6