701954-53-2Relevant articles and documents
Resolution and absolute configuration of some a-aminoacetals: En route to enantiopure N-protected a-aminoaldehydes
Albalat-Serradeil, Muriel,Primazot, Geraldine,Wilhelm, Didier,Vallejos, Jean-Claude,Vanthuyne, Nicolas,Roussel, Christian
scheme or table, p. 687 - 696 (2012/09/22)
The first successful resolution of rac-a-aminoacetals via diastereoisomeric salt formation with optically pure N-protected aminoacids is reported. The absolute configuration assignment of a-aminoacetal enantiomers is performed by an entirely non-racemizing chemical correlation method involving N-protection and a new efficient hydrolysis step followed by a reduction of the resulting N-protected a-aminoaldehyde intermediates. A racemization method of optically enriched a-aminoacetals is exemplified to allow valorisation of both enantiomers. Springer-Verlag 2011.
Improved Access to Imidazole-phosphonic Acids: Synthesis of D-manno-Tetrahydroimidazopyridine-2-phosphonates)
Terinek, Miroslav,Vasella, Andrea
, p. 719 - 734 (2007/10/03)
The D-manno-tetrahydroimidazopyridine-2-phosphonate 11 was prepared via a high-yielding Pd(PPh3)4-catalysed diphenylphosphonylation of the manno-iodoimidazole 12, followed by transesterification to the diethyl phosphonate 14 and deal