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The protonation of a macrobicyclic cage with four intracyclic nitrogen atoms (one included into a tribenzylamine fragment and the other three into iminophosphorane units) led to tris(aminophosphonium) cations. In the salts, the three anions are situated outside the internal cavity although intercalated within the grooves of its macrobicyclic skeleton. The three aminophosphonium units are remarkably...
The type and position of donor atoms in proline-derived, non-C 2 symmetric, terdentate ligands are found to have significant effects on the enantioselectivity of the palladium-catalysed allylic substitution reaction.
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