A seven-membered ring chelate structure, hitherto unknown in the case of titanium compounds, characterizes the complex 1. Presumably, this complex is the reactive species in solution in the TlCl4-catalyzed Diels-Alder reaction of allyl lactates with dienes. An X-ray structure analysis of the complex shows that the Re-side of the CC double bond is well shielded by one of the chlorine atoms.
No takes yet. Share an insight, caveat, or question.
Poll et al. (1985) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: