235751-73-2Relevant academic research and scientific papers
Synthesis and reactivity of acylphosphine tetracarbonyl-iron complexes
Brunet, Jean-Jacques,Chauvin, Remi,Donnadieu, Bruno,Thepaut, Erwan
, p. 198 - 205 (1999)
A general method for the synthesis of (CO)4Fe[PPhX(C(O)R)] complexes from lithium acylferrates and PhXPCl is described (R = alkyl, phenyl, X = Ph, Cl). The X-ray crystal structure of (CO)4Fe[PPh2(C(O)Me)] has been determined and compared with that of other mononuclear acylphosphine complexes, which all possess a long P-C(O) bond. The weakness of this bond is revealed in nucleophilic and basic media, where (CO)4Fe[PPh2(C(O)R)] mostly leads to the [(CO)4FePPh2]- anion. In the presence of LDA, however, some deprotonation occurs for R = Me, n-Bu, and subsequent addition of Ph2PCl leads to monodentate α-phosphinoxyvinyl phosphine carbonyliron complexes in moderate yield.
