SYNTHESIS, CHARACTERIZATION OF (R)-2,2'-DIAMINO-1,1'-BINAPHTHYL MONO-SULFONAMIDE AND ITS RUTHENIUM COMPLEX AND EVALUATION OF THE CATALYTIC PROPERTIES IN TRANSFER HYDROGENATION REACTIONS

(R)-2-amino-2'-(8-quinolinesulfonyl amino)-1,1'-binaphthyl is synthesi zed. Its ruthenium complex is shown to be an asymmetric catalyst for t ransfer hydrogenation reactions in high chemical yield and modest enan tioselectivity. Single crystal diffraction studies of both the ligand and the ruthenium complex show strong pi-stacking interactions between the quinoline ring and one of the naphthyl groups. The relationship b etween the structure and catalytic reactivity is also discussed. (C) 1 998 Elsevier Science S.A. All rights reserved.