|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|4914579||1427345||2018||7 صفحه PDF||سفارش دهید||دانلود رایگان|
- Protonation of ethynylferrocene with Nafion film in sc-CO2.
- Preparations of phosphonium salts from ferrocenylvinyl cation and phosphines.
- (Ferrocenylvinyl)phosphonium salts: “green” and mild preparation.
- 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 3-5 were completely characterized by NMR spectra and their molecular structures elucidated by X-ray studies.
Journal: The Journal of Supercritical Fluids - Volume 131, January 2018, Pages 117-123