Complexation of bisphosphoramides, linked by various length methylene tethers, with tin tetrachloride was studied by both solution NMR spectroscopy and single-crystal X-ray crystallography. The formation of cis-configured, octahedral 1/1 bisphosphoramide.SnCl(4) complexes was supported by both crystallographic and solution NMR studies. In addition, the formation of such complexes was shown to be highly dependent on the tether length and solution concentration. Single-crystal X-ray analysis of bisphosphoramide.SnCl(4) complexes also provided detailed information on the stereochemical environment relevant to the enantioselectivity of asymmetric allylation reactions.
No takes yet. Share an insight, caveat, or question.
Denmark et al. (2003) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: