| Autor: |
Bijeire, Laurent, Denier, Colette, Mulliez, Michel, De Lima, Waldir Tavares |
| Předmět: |
|
| Zdroj: |
Phosphorus, Sulfur & Silicon & the Related Elements; Apr2007, Vol. 182 Issue 4, p881-891, 11p, 1 Diagram, 2 Charts |
| Abstrakt: |
Two stable hemiaminals, N acylated by the p-nitrobenzoyl or Boc group and each substituted by the difluorocarboxylethylester moiety, were obtained in a single step from the corresponding ethylhemiacetal. The Boc compound, after acylation by trifluoroacetic anhydride followed by in situ reaction either with trimethylsilylated derivatives of cyanide or diethylphosphite, or with sodium sulfite, led to the protected carboxylic, phosphonic, and sulfonic α-aminoacids, respectively. Acid hydrolysis, preceded by acidolysis in the cases of the sulfonic and phosphonic compounds, led to the free aminoacids. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
