Additionally, since disulfide is present under catalytic conditions as a result of catalyst deactivation (see above), we chose to test the competency of disulfides themselves as catalysts or precatalysts. Employing achiral disulfides, we found comparable yields between PhSH and PhSSPh (Scheme 6, see SI for other tests). Given that the reaction is generally under reductive conditions, it is plausible that any disulfides (pre-formed or made in situ) can be reduced to their active free thiol in solution. Therefore, we conclude the formation of disulfides in the catalytic reaction is not a major source of catalyst deactivation or sequestration.