NOVEL PHOTOINDUCED ASYMMETRIC-SYNTHESIS OF LAMBDA-[CO(ACAC)(3)] FROM CO(ACAC)2(H2O)2 AND HACAC CATALYZED BY RACEMIC COMPLEXES OF DELTA-[RU(MENBPY)3]2+ AND LAMBDA-[RU(MENBPY)3]2+ (MENBPY = 4,4'-DI-[(1R,2S,5R)-(-)-MENTHOXYCARBONYL)]-2,2'-BIPYRIDINE - HACAC = PENTANE-2,4-DIONE)

The asymmetric synthesis of M(C3)-AND-[Co(acac)3] has been realized by the oxidation of Co(acac)2(H2O)2 and Hacac with the racemic photocatalysts of [Ru(menbpy)3]2+ (menbpy = 4,4'-di-[(1R, 2S,5R)-(-)-menthoxycarbonyl]-2,2'-bipyridine} which predominates the helical chirality of M(C3)-DELTA-[Ru(Menbpy)3]2+; the extent of the asymmetric induction by the helical photocatalyst has been enlarged by lowering the % v/v of EtOH-H2O or by raising the molar ratio of [Hacac]/[Co(acaC)2(H2O)2].