Imidazole derivatives. Part 34. Synthesis and properties of [Ph2(Carb)P]AlCl4 (Carb = 2,3-dihydro-1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene). A stable carbene complex of trivalent phosphorus.
2,3-Dihydro-1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene (Carb) reacts with Ph2PCl to give [Ph2(Carb)P]Cl which is converted to the more stable [Ph2(Carb)P]AlCl4 (13) on treatment with AlCl3. The cationic [Ph2(Carb)PSe]AlCl4 was obtained from 13 and Se. Spectroscopic and structural data indicate [Ph2(Carb)P]+ to be a cationic analog of Ph3P. The x-ray structure of 13.2H2O is reported.
Dieser Eintrag ist freigegeben.