Complex sentence: Enantioenriched organlithium species can be obtained through asymmetric metalation of prochiral substrates, often under the presence of a chiral ligand such as (-)-sparteine.
Split into simpler sentences: Enantioenriched organlithium species can be obtained through asymmetric metalation of prochiral substrates. Asymmetric induction requires the presence of a chiral ligand such as (-)-sparteine.