| 摘要 |
- ? 6-16034/+ Process for the preparation of optically active secondary arylamines Asymmetric hydrogenation of prochiral,N-arylketimines to give optically active secondary amines at a temperature of -20 to 80.degree.C, a hydrogen pressure of 105 to 6.106 Pa with the addition of catalytic amounts of an iridium compound of the formula III or IIIa ¢XIrYZ! (III) or ¢XIrY!?A? (IIIa) in which X is two olefin ligands or one diene ligand, Y is a chiral diphosphine, the secondary phosphine groups of which are linked by 2-4 C atoms and which, together with the Ir atom, forms a 5-, 6- or 7-ring, or Y is a chiral diphosphinite, the phosphinite groups of which are linked via 2 C atoms and which together with the Ir atom forms a 7-ring, Z is Cl, Br or I and A? is the anion of an oxygen acid or complex acid, and if appropriate with the addition of an ammonium or alkali metal chloride, bromide or iodide. |
