(Sa)-Binam-D-prolinamide (20 mol%)  instead of (Sa)-binam-L-prolinamide  in combination with chloroacetic acid (100 mol%) is an efficient organocatalyst for the direct aldol reaction between α-keto esters as electrophiles and alkyl and α-functionalised ketones  under quasi solvent-free conditions  providing access to highly functionalised chiral quaternary γ-keto α-hydroxyesters with up to 92% ee