3) The utility of the method is limited by the presence of amines; with primary, secondary and tertiary amines. The presence of aniline leads to significant decrease in conversion. 4) While heterocycles are in general well tolerated, the presence of pyridine is detrimental. The activity is restored by sterically hindering the pyridine nitrogen (pyridine vs. 2,6-lutidine). 5) Alkenes are tolerated, but the presence of alkynes leads to complete inhibition of the reaction. While this approach provides valuable information on the limitations of this methodology, we recognize that such a simplified approach has its limitations, as the integrity of the additives post-reaction was not determined. Changes in electronic properties of the additives by substituents variation can also effect compatibility.