Back to Search
Start Over
Synthesis and Dynamic NMR Study of a Functionalized Sulfonamide Phosphonate Diester.
- Source :
-
Phosphorus, Sulfur & Silicon & the Related Elements . Jul2011, Vol. 186 Issue 7, p1428-1435. 8p. 4 Diagrams, 2 Charts, 1 Graph. - Publication Year :
- 2011
-
Abstract
- Protonation of the highly reactive 1:1 intermediate produced in the reaction between triphenylphosphite and activated acetylene by sulfonamide leads to a phosphonate ylide, which undergoes methanol elimination in the presence of moisture to produce a highly functionalized sulfonamide phosphonate diester. A dynamic nuclear magnetic resonance (NMR) effect is observed in the 1H NMR spectra of this compound as a result of restricted rotation around the single C‒N bond. The coalescence temperature was observed at TC = 352.5 K, and the free energy of activation (ΔG#) for this process is 75.6 ± 2 kJ.mol−1. GRAPHICAL ABSTRACT [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10426507
- Volume :
- 186
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Phosphorus, Sulfur & Silicon & the Related Elements
- Publication Type :
- Academic Journal
- Accession number :
- 63702166
- Full Text :
- https://doi.org/10.1080/10426507.2010.515951