کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
673909 | 1459533 | 2013 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Thermochemical properties of dibenzyloxy disulfides Thermochemical properties of dibenzyloxy disulfides](/preview/png/673909.png)
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 1H NMR analysis its corresponding alcohol and aldehyde were observed.
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► Synthesis of ten dibenzyloxy disulfide derivatives with various para-substituents.
► Derivatives were analyzed by TGA and DSC to discern molecular fragmentation.
► A correlation of fragmentation to Swain and Lupton's R-value was observed.
► DSC thermogram of bis(p-phenylbenzyloxy) disulfide revealed fragmentation.
Journal: Thermochimica Acta - Volume 551, 10 January 2013, Pages 99–103