Funktionalisierte cyclopentadienylliganden für den aufbau von tripod-komplexen: synthese und komplexchemie
摘要:
Starting from the functionalized oxetan <(CH2OCH2C)over bar>(CH2Br)(CH2OSO2CH3), 1, the synthesis of hydroxy functionalized tripod ligands of the type HOCH2C(CH2C5H5)(CH2PPh2)(CH2PR2), 3a-c (R = Ph, m-Xylyl, DBP), is achieved in two steps. Instead of PR2 a thiobenzyl donor group is fixed to the neopentane backbone and the ligand HOCH2C(CH2C5H5)(CH2PPh2)(CH(2)SBz), 8, is obtained. The capability for further functionalisation of the hydroxy function in 3 is demonstrated with the formation of the acetyl derivative CH3CO2CH2C(CH2C5H5)(CH2PPh2)(2), 5. The deprotonated chelating ligands of the type 3 and 5 react with (PPh3)(2)FeCl2 to the iron complexes ROCH2C(CH2-eta(5)-C5H4)(CH2PPh2)(2)FeCl, 9a,b (R = H, CH3CO).
Three-Coordinate, Cyclic Bent Allene Iron Complexes
作者:Conor Pranckevicius、Douglas W. Stephan
DOI:10.1021/om400166t
日期:2013.5.13
Novel three-coordinate Fe complexes featuring 1,2-diphenyl-3,5-bis(2,6-dimethylphenoxy)pyrazolin-4-ylidine or “cyclic bent allene” (CBA) have been synthesized. Reaction with FeCl2(PPh3)2 results in the loss of both phosphines to yield monomeric Fe(CBA)Cl2. Treatment with 2 equiv of benzyl Grignard affords the three-coordinate alkylated product Fe(CBA)(Bn)2. Exposure of the alkylated species to an atmosphere
The di-μ-bromo bridged derivative [(κ2-2)2Ru(μ-Br)2Ru(κ2-2)2]2+ [3b]2+ was obtained from RuCl3 · xH2O and 1b. The bridging halide ligands can be removed by the reaction with silver or sodium salts of bidentate Lewis acids. Complex [3a]2+ reacts with silver pyridylcarboxylate to give a racemic mixture of the mononuclear complex [4]+. Reaction of [3a]2+ with the sodium salt of l-proline resulted in
Arulsamy, K. S.; Ashok, R. F. N.; Agarwala, U. C., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1984, vol. 23, # 1, p. 21 - 25
作者:Arulsamy, K. S.、Ashok, R. F. N.、Agarwala, U. C.
DOI:——
日期:——
Arulsamy, K. S.; Ashok, R. F. N.; Agarwala, U. C., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1984, vol. 23, # 2, p. 122 - 126
作者:Arulsamy, K. S.、Ashok, R. F. N.、Agarwala, U. C.