Phosphorus-containing biphenyl derivatives and their use in asymmetric hydrogenation and enatioselective hydrogen shifts

摘要

there will be new chiral phosphorus compounds of the general formula describedwhat r is phenyl, r1 and r2, which are identical or different, can be hydrogen, alkyl alkoxy less, less, less alkylamino di -,or, or r1 and r2 together protected hydroxymethyl groupsmean, where m is a number from 3 to 5, r4 inferior alkyl, phenyl or alkyl and r5 benzyl inferior or both together constitute less alkylen r5, r3 methyl, less alkoxy,di - less alkylamino or fluorine and n is the number of 0, 1, 2 or 3.;the compounds of the formula i are used, in the form of a complex with a metal of the group viii.as catalysts for asymmetric hydrogenations and enantioselektive wasserstoffverschiebungen in prochiralen allylischen systems.