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321.
The reactions of hexachlorocyclotriphosphazene N3P3Cl6 ( 1 ) with 1‐naphthol and 1‐naphthylamine have been examined. The reaction of 1 with sodium 1‐naphthoxy gave the hexakis(1‐naphthoxy)cyclotriphosphazene ( 2 ) in high yield. Geminal 2,2‐di(1‐naphthylamino)‐4,4,6,6‐tetrachlorocyclotriphosphazene ( 3 ) was obtained from the reaction of 1 with 1‐naphthylamine. The structures of phosphazene derivatives were defined by elemental analysis, FTIR, UV‐‐visible, and 1H, 13C, 31P NMR spectroscopy. The fluorescence intensity of the compounds was measured in THF and CH2Cl2. © 2008 Wiley Periodicals, Inc. Heteroatom Chem 19:158–162, 2008; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20400 相似文献
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323.
Emad Karrar Isam A. Mohamed Ahmed Wei Wei Frederick Sarpong Charalampos Proestos Ryszard Amarowicz Emel Oz Aly Farag El Sheikha Ayman Y. Allam Fatih Oz Xingguo Wang 《Molecules (Basel, Switzerland)》2022,27(12)
In this study, the volatile compound profiles of gurum seed oil were determined using two methods: supercritical CO2 extraction (SFE) and the screw press process (SPP). For volatile compounds extraction and identification, headspace solid-phase micro-extraction (HS-SPME) and GC–MS were used, respectively. A total number of 56 volatile compounds were revealed and identified in oil extracted by SFE, while only 40 compounds were detected in extracted oil by SPP. Acids, aldehydes, esters, ketones, furans, and other components were present in the highest ratio in oil extracted by SFE. In contrast, alcohols and alkenes were found in the highest proportion in oil extracted by SPP. In this study, it was observed that SFE showed an increase in the amounts of volatile compounds and favorably impacted the aroma of gurum seed oil. The results reveal that different extraction methods significantly impact the volatile components of gurum seed oil, and this study can help evaluate the quality of the oil extracted from gurum seeds. 相似文献
324.
Yılmazoğlu Mesut Bayıroğlu Fatih Erdemi Hamit Abaci Ufuk Guney H. Yuksel 《Journal of Solid State Electrochemistry》2023,27(5):1143-1154
Journal of Solid State Electrochemistry - In this study, polymeric membranes composed of ionic liquid (IL), 1-ethyl-3-methylimidazolium tetrafluoroborate supported sulfonated poly(ether ether... 相似文献