New steroidal chiral phosphines, methods for their preparation, catalytic systems containing them and catalytic processes in which they are used.

摘要

New steroidal chiral phosphines of formula
<Chemistry id="chema01" num="0001"><Image id="ia01" he="41" wi="84" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein R represents a phosphorated group selected between
<Chemistry id="chema02" num="0002"><Image id="ia02" he="7" wi="18" file="IMGA0002.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>and
<Chemistry id="chema03" num="0003"><Image id="ia03" he="21" wi="54" file="IMGA0003.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>methods for their preparation; catalytic systems comprising metal complexes and the above steroidal chiral phosphines; asymmetrical catalytic processes like hydrogenation, hydroformylation and hydrocarbalkoxylation of prochiral compounds which employ said catalytic systems.