745017-96-3Relevant academic research and scientific papers
C-H...O hydrogen bond-directed ligand exchange reaction: Diastereoselective synthesis of P,S-bridged (μ-alkyne)Co2(CO) 4 complexes
Sola, Jordi,Riera, Antoni,Verdaguer, Xavier,Maestro, Miguel A.
, p. 5795 - 5799 (2006)
Here we describe a nonclassical interaction between a sulfonyl group in a dicobaltcarbonyl-alkyne complex and a methine moiety attached to three heteroatoms (O, P, S) included hi the PuPHOS and CamPHOS ligands. This interaction provides an efficient recognition event that yields up to 86% de in the CO-phosphine exchange reaction. The isomerization mechanism leading to the observed diastereomeric bias was studied computationally at the semiempirical level.
