Reduction of Inhomogeneous Line Broadening in Two-Dimensional High-Resolution MAS NMR Spectra of Molecules Attached to Swelled Resins in Solid-Phase Synthesis

1997 ◽  
Vol 119 (7) ◽  
pp. 1787-1788 ◽  
Author(s):  
Axel Meissner ◽  
Paw Bloch ◽  
Eberhard Humpfer ◽  
Manfred Spraul ◽  
Ole Winneche Sørensen
2010 ◽  
Vol 8 (1) ◽  
pp. 28-33 ◽  
Author(s):  
Piotr Stefanowicz ◽  
Joanna Batorska ◽  
Monika Kijewska ◽  
Hubert Bartosz-Bechowski ◽  
Zbigniew Szewczuk ◽  
...  

AbstractWe established, that crystalline hydrate of 2,3:4,5-di-O-isopropylidene-β-D-arabino-hexos-2-ulo-2,6-pyranose is a new, convenient and stable reagent for solid phase synthesis of peptide derived Amadori products. The structure of the title compound was studied by X-ray analysis, NMR spectroscopy, and high resolution ESI-MS. The crystal structure indicated the existence of two symmetry-independent molecules that were not connected with hydrogen bonds. A comparison with previously reported 2,3:4,5-di-O-isopropylidene-β-D-fructopyranose revealed, that these two compounds are isostructural.


2004 ◽  
Vol 42 (5) ◽  
pp. 453-458 ◽  
Author(s):  
Nikolaus M. Loening ◽  
Takuya Kanemitsu ◽  
Peter H. Seeberger ◽  
Robert G. Griffin

2013 ◽  
Vol 379 ◽  
pp. 60-65 ◽  
Author(s):  
S.N. Sorokova ◽  
A.G. Knyazeva

Two-dimensional model of the Ti-Ni coating synthesis in condition of the electron-beam treatment is suggested and investigated. The base is iron. The system of chemical reactions is written according to the phase diagram of Ti-Ni.The results of numerical investigation of the model which illustrate the role of the technology parameters in the conversion regimes are represented. Distribution of temperature and elements concentration and compounds in different time moments for different synthesis conditions are constructed. It is shown that at any process organization the synthesized material becomes chemically heterogeneous.


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