914250-83-2Relevant academic research and scientific papers
Hindered diarylether and diarylsulfone bisphosphine ligands: Atropisomerism and palladium complexes
Clayden, Jonathan,Fletcher, Stephen P.,Senior, James,Worrall, Christopher P.
scheme or table, p. 1355 - 1360 (2010/10/21)
Phosphines and bisphosphines derived from hindered ortho-substituted diaryl ethers and diarylsulfones by lithiation are, with appropriate substitution patterns, resolvable atropisomeric ligands which form crystalline complexes with palladium dichloride.
Three groups good, four groups bad? Atropisomerism in ortho-substituted diaryl ethers
Betson, Mark S.,Clayden, Jonathan,Worrall, Christopher P.,Peace, Simon
, p. 5803 - 5807 (2007/10/03)
(Chemical Equation Presented) Bring on the substitute: Even outside of macrocyclic structures, such as vancomycin, appropriate substitution can give rise to atropisomerism in diaryl ethers. Stereochemical stability about the Ar-OAr axis at room temperature or above is possible when neither of the rings is symmetrically substituted and when at least one ring carries an ortho tert-butyl group or equivalent.
