Thermochemical properties of dibenzyloxy disulfides
作者:Eric G. Stoutenburg、Anne E. Palermo、Ronny Priefer
DOI:10.1016/j.tca.2012.10.028
日期:2013.1
The in situ thermal behavior of dialkoxy disulfides (-OSSO-) has been previously explored, however their neat thermal stability has yet to be examined. We synthesized a library of ten dibenzyloxy disulfide derivatives with various para-substituents. Each derivative was analyzed by TGA and DSC to discern molecular fragmentation. A correlation of the pattern of fragmentation to Swain and Lupton's R-value was observed. Also, DSC analysis revealed that when the para-substituent was a phenyl (i.e. bis(p-phenylbenzyloxy) disulfide), and successive runs were performed, the thermogram showed the presence of the fragmentation, and upon H-1 NMR analysis its corresponding alcohol and aldehyde were observed. (C) 2012 Elsevier B.V. All rights reserved.
Chemical shift and coupling constant analysis of dibenzyloxy disulfides
作者:Eric G. Stoutenburg、Ganna Gryn’ova、Michelle L. Coote、Ronny Priefer
DOI:10.1016/j.saa.2014.10.109
日期:2015.2
Dialkoxy disulfides have found applications in the realm of organic synthesis as an S2 or alkoxy donor, under thermal and photolytic decompositions conditions, respectively. Spectrally, dibenzyloxy disulfides possess an ABq in the (1)H NMR, which can shift by over 1.1ppm depending on the substituents present on the aromatic ring, as well as the solvent employed. The effect of the said substituents and solvent