The pentaerythritol,phosphorus oxychloride,concentrated nitric acid,dichloro sulfoxide and hydroquinone etc.were used to synthesize a novel PEPA derivative with aryl:p-benzenediol-di(4-oxo-4-phospha-3,5,8-trioxobicycl...The pentaerythritol,phosphorus oxychloride,concentrated nitric acid,dichloro sulfoxide and hydroquinone etc.were used to synthesize a novel PEPA derivative with aryl:p-benzenediol-di(4-oxo-4-phospha-3,5,8-trioxobicycl[2.2.2]ooctyl)formic ester.The structure and thermal behaviors of the novel compound were identified and studied by FT-IR,1H NMR,ESI-MS and TGA respectively.The reaction conditions such as reaction temperature,solvent,material molar ratio etc.,were discussed.The suitable synthesis condition were defined as follows:reaction solvent was 1,4-dioxane,the molar ratio of the compound Ⅱ to the hydroquinone was 3∶1,reaction temperature was 101 ℃,reaction time was 3 h.Under the above conditions,the yield was 95.6%.The curves of TGA and DTG showed that the beginning temperature of decomposition of the compound was 295 ℃,the char content was 59% at 600 ℃,which had an excellent thermal stability and char forming.展开更多
文摘The pentaerythritol,phosphorus oxychloride,concentrated nitric acid,dichloro sulfoxide and hydroquinone etc.were used to synthesize a novel PEPA derivative with aryl:p-benzenediol-di(4-oxo-4-phospha-3,5,8-trioxobicycl[2.2.2]ooctyl)formic ester.The structure and thermal behaviors of the novel compound were identified and studied by FT-IR,1H NMR,ESI-MS and TGA respectively.The reaction conditions such as reaction temperature,solvent,material molar ratio etc.,were discussed.The suitable synthesis condition were defined as follows:reaction solvent was 1,4-dioxane,the molar ratio of the compound Ⅱ to the hydroquinone was 3∶1,reaction temperature was 101 ℃,reaction time was 3 h.Under the above conditions,the yield was 95.6%.The curves of TGA and DTG showed that the beginning temperature of decomposition of the compound was 295 ℃,the char content was 59% at 600 ℃,which had an excellent thermal stability and char forming.
