Synthesis of Chiral Sulfoximines Derived from 3-Aminoquinazolinones and TheirCatalysis of Enantioselective Diethylzinc Addition to Aldehydes. -The presented chiral sulfoximine QAS, which can be easily prepared in five steps in a 41% overall yield, shows the best results in the title reaction, cf. the reaction of the compound (Id). -(KARABUGA, S.; CAKICI, M.; KAZAZ, C.; SAHIN, E.; KILIC, H.; ULUKANLI*, S.; Org. Biomol. Chem. 9 (2011) 22, 7887-7896, http://dx.doi.org/10.1039/c1ob06205k ; Dep. Chem., Fac. Sci. Lett., Osmaniye Korkut Ata Univ., TR-80000 Osmaniye, Turk.; Eng.) -C. Gebhardt 15-057