We have also developed a chiral phosphoric acid catalyzed enantioselective transfer hydrogenation of ketimines using benzothiazoline derivatives as the hydrogen donor (Scheme 1a-iii). Because of the bifunctional nature of chiral phosphoric acid, the transfer hydrogenation of ketimines proceeded in a highly enantioselective manner using benzothiazoline derivatives. Hence, we hypothesize that 2-alkyl benzothiazoline is applicable to the enantioselective radical transfer reactions with imines. We wish to report herein a chiral phosphoric acid catalyzed visiblelight driven enantioselective radical addition to imines by using benzothiazoline derivatives as the radical precursors (Scheme 1d).