Component exchange as a synthetically advantageous strategy for the preparation of bicyclic cage compounds
作者:Mateo Alajarín、José Berná、Carmen López-Leonardo、Jonathan W. Steed
DOI:10.1039/b801299g
日期:——
Macrobicyclic triphosphazides are able to reversibly exchange one of their tripodal components by means of a dynamic disassembly-reassembly process; surprisingly this strategy provides better yields of cage compounds than a direct tripod-tripod coupling.
Design and synthesis of a new macrobicyclic tris(phosphazide)
作者:Mateo Alajarín、Angel Vidal、Carmen López-Leonardo、José Berná、M.Carmen Ramírez de Arellano
DOI:10.1016/s0040-4039(98)01707-9
日期:1998.10
Design, synthesis and full characterization, including X-ray determination, of the first macrobicyclic tris(phosphazide) with two Z and one E PN3 units is described.
Modulating the propeller-like shape of a tripodal C(CH2PPh2)3 fragment by the size of the substituent at the pivotal carbon atom in macrobicyclic tri-λ5-phosphazenes
The chiral macrobicyclic tri-λ5-phosphazenes formed by tripod–tripod coupling of tris(3-azidobenzyl)amines and 1,1,1-tris[(diphenylphosphino)methyl]methanes present helical topologies as a result of combining two propeller-shaped tripodal fragments with the same sense of twist. The introduction of a series of Rpiv substituents of increasing size at the pivotal carbon of the lower tert-butane fragment
Macrobicyclic triphosphazides and tri-λ5-phosphazenes derived from PhC(CH2PPh2)3. Two propeller-shaped diastereoisomers in the crystals
作者:Mateo Alajarín、Carmen López-Leonardo、José Berná、Jonathan W. Steed
DOI:10.1016/j.tet.2006.12.027
日期:2007.2
Newmacrobicyclic cage-compounds composed of two tripodal, propeller-shaped fragments linked by phosphazide and phosphazene units have been synthesized by reaction of PhC(CH2PPh2)3 with tris(m-azidobenzyl)amines. Two diastereoisomers of one of these cages have been characterized in the solid state by X-ray crystallography, one presenting two propellers with the same sense of twist P∗,P∗ whereas in