Table 1. Screening of Different Iron Compounds as PC for the Visible-Light-Mediated Enantioselective Alkylation of 2-Phenylacetaldehyde with Dimethyl Bromomalonate (2.5 mol % PC, 20 mol % (6)).

PC	Yield (%)
[Fe(bpy)3]Br2	99
FeBr2	0
[(PPh3)2Fe(NO2)2]	5
[Fe(phen)3]Cl2	89
[Fe(phen)3](PF6)2	92