Synthesis of a water-soluble chiral NMR shift reagent: (S)-PDTA

Autor: Claudia Zucchi, Nicola Florini, Gyula Pályi, Bálint Kónya, Gaelle Francoise Arnaud
Rok vydání: 2009
Předmět:
Zdroj: Tetrahedron: Asymmetry. 20:1036-1039
ISSN: 0957-4166
DOI: 10.1016/j.tetasy.2009.02.063
Popis: A five-step synthesis of the water-soluble chiral polydentate ligand, ( S )-PDTA [( S )-PDTA = N , N , N ′, N ′-tetrakis[(hydroxycarbonyl)methyl]-( S )-1,2-diaminopropane] starting from l -alanine has been worked out, via steps with retention of chirality. Total yield is 50.7% (average of ∼88% for each step), while published methods report 33.4% total yield over four steps.
Databáze: OpenAIRE