144. Asymmetric Diels-Alder reactions: X-Ray crystal-structure analysis of [N-((E)-But-2-enoyl)bornane-10,2-sultam]tetrachlorotitanium
     Oppolzer, W.; Rodriguez, I.; Blagg, J.; Bernardinelli, G.
     Helv. Chim. Acta 1989, 72, 123-130

An X-ray diffraction analysis of the crystalline complex 2b (ML_n — TiCl₄) shows a chelation of the carbonyl O-atom and the upper SO₂ O-atom by TiCl₄, a slightly pyramidal N-atom, and a π -face-stereoselective shielding of the C(α)-Si face by the CH₂(3) group. The Ti-atom is in a pseudo-octahedral environment.

DOI : 10.1002/hlca.19890720116 

archive ouverte unige:152893