Assertion: chiral phosphine | /r/ObjectUse | used as ligand
Facets:
value: for asymmetric catalysis
type: PURPOSE
Source sentences:
text: (1) Because barriers to inversion at P are high, (2) chiral phosphines retain their stereochemistry, and chiral nonracemic phosphines can be isolated and used as ligands for asymmetric catalysis (3) and used directly for organic catalysis.