Cyanohydrins Q 0521Anionic Chiral Cobalt(III) Complexes as Catalysts of Asymmetric Synthesis of Cyanohydrins. -Chiral coordinatively saturated Co(III) complexes with Schiff bases of enantiopure amino acids catalyze the formation of enantiomerically enriched cyanohydrins from aldehydes and Me3Si-CN. -(BELOKON*, Y. N.; MALEEV, V. I.; MAL'FANOV, I. L.; SAVEL'EVA, T. F.; IKONNIKOV, N. S.; BULYCHEV, A. G.; USANOV, D. L.; KATAEV, D. A.; NORTH, M.; Russ. Chem. Bull. 55 (2006) 5, 821-827; Nesmeyanov Inst. Organoelem. Compd., Russ. Acad. Sci., Moscow 119991, Russia; Eng.) -H. Toeppel 05-082

Nitriles Q 0520Asymmetric Synthesis of Cyanohydrins Catalyzed by a Potassium ∆-Bis[N-salicylidene-(R)-tryptophanato]cobaltate Complex. -Under optimized conditions the preparation of optically active cyanohydrins such as (R)-(III) is presented. The synthesis of the catalyst is also described. -(BELOKON*, Y. N.; BULYCHEV, A. G.; MALEEV, V. I.; NORTH, M.; MALFANOV, I. L.; IKONNIKOV, N. S.; Mendeleev