|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|4914579||1362626||2018||7 صفحه PDF||ندارد||دانلود رایگان|
â¢Protonation of ethynylferrocene with Nafion film in sc-CO2.â¢Preparations of phosphonium salts from ferrocenylvinyl cation and phosphines.â¢(Ferrocenylvinyl)phosphonium salts: âgreenâ and mild preparation.â¢A convenient method for generation and trapping of labile carbocations.
A protonation of ethynylferrocene by nafion in sc-CO2 in the presence of triphenylphosphine (PPh3) or 1,2-bis(diphenylphosphino)ethane (DPPE) leads to a formation of novel (1-ferrocenylvinyl)phosphonium or ferrocenyl substituted bisphosphonium salt isolated as tetrafluoroborates 3 and 4, respectively. Ferrocenyl substituted bisphosphonium tetrafluoroborate 4 undergoes the hydrolytic cleavage of the P+-C(Fc) bond in the presence of Al2O3 at 25Â Â°C to form ferrocenyl substituted phosphinyl phosphonium tetrafluoroborate 5. Complexes 3â5 were completely characterized by NMR spectra and their molecular structures elucidated by X-ray studies.
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Journal: The Journal of Supercritical Fluids - Volume 131, January 2018, Pages 117-123