35913-82-7Relevant articles and documents
Manganese- and rhodium-catalyzed phenylsilane hydrosilation-deoxygenation of iron acyl complexes Cp(L)(CO)FeC(O)R (L = CO, PPh3, P(OMe)3, P(OPh)3; R = CH3, Ph, CHMe2, CMe3)
Mao, Zhibiao,Gregg, Brian T.,Cutler, Alan R.
, p. 1993 - 2002 (1998)
The manganese carbonyl acyl complexes L(CO)4MnC(O)R (L = CO, R = CH3 (2a); L = CO, R = Ph (2b); L = PPh3, R = CH3 (2c)) are precatalysts for the PhSiH3 hydrosilation-deoxygenation of Cp(CO)2FeC(O)CH3 (1a) to Cp(CO)2FeCH2CH3 (6a). Thus, 2a (4%) and 1.1 equiv of PhSiH3 reduce 1a initially to a mixture of [Cp(CO)2FeCH(CH3)O]3-xHxSiPh (x = 2 (3b), 1 (4b), and 0 (5b)) (7-8 h), which transforms to a mixture of 5b (62%) and 6a (35%) (12 h). Similarly, 2b and PhSiH3 transform 1a to a mixture containing 4% 3b, 22% 4b, 72% 5b, and 2% 6a (30 min), then up to 15-20% 6a (12 h). Use of 2c as the precatalyst selectively yields 71% 4b and 10% 6a (30 min), then up to 19% 6a (5 h). Both 4b and 5b were isolated by size-exclusion chromatography and characterized as mixtures of four stereoisomers, 4b as a pair of enantiomers having a prochiral center and two meso diastereoisomers with pseudoasymmetric centers and 5b as a diastereomeric pair of enantiomers. The PhSiH3 (1.6 equiv)/RhCl(PPh3)3 (3%) system conveniently transforms Cp-(L)(CO)FeC(O)R to their alkyl derivatives Cp(L)(CO)FeCH2R. Seven iron acyl complexes were studied (Cp(CO)2FeC(O)R, R = Me, Ph, iPr, tBu; Cp(L)(CO)FeC(O)CH3, L = PPh3, P(OMe)3, and P(OPh)3), which gave 49-87% isolated yields of Cp(L)(CO)FeCH2R. Their modest yields correspond to the presence of byproducts, Cp(CO)2FeCH=CH2 (32%) and 4b (14%) with 1a and 10-15% of the vinyl complexes with L = PPh3 and P(OPh)3.
Photoactivated silicon-oxygen and silicon-nitrogen heterodehydrocoupling with a commercially available iron compound
Cibuzar, Michael P.,Hammerton, James,Reuter, Matthew B.,Waterman, Rory
supporting information, p. 2972 - 2978 (2020/03/13)
Silicon-oxygen and silicon-nitrogen heterodehydrocoupling catalyzed by the commercially available cyclopentadienyl dicarbonyl iron dimer [CpFe(CO)2]2 (1) under photochemical conditions is reported. Reactions between alcohols and PhSi
Characterization of the μ-(η1-C: Η2-S,S′) dithiocarboxylate complexes Cp(CO)2Fe-CS2-Zr(X)Cp2 (X=Cl, OCMe3); CS2 insertion into the FeZr bond of the heterobimetallic complex Cp(CO)2Fe-Zr(OCMe3)Cp2
Pinkes, John R.,Tetrick, Stephen M.,Landrum, Bruce E.,Cutler, Alan R.
, p. 1 - 7 (2007/10/03)
Treatment of the carbon disulfide adducts FpCS2K and Fp′CS2K [Fp′=(η5-C5H4CH 3)Fe(CO)2] with Cp2ZrCl2 affords the μ-(η1-C: η2-S,S′) dithiocarboxylate complexes FpCS2ZrClCp2 (1) and Fp′CS2ZrClCp2 (2). Both stable products were fully characterized. Metathesis between FpCS2K and Cp2ZrCl(OCMe3) provided FpCS2Zr(OCMe3)Cp2 (3), which was not obtained analytically pure. This product was characterized by comparison of its IR and 1H-, 13C{1H}-NMR spectral data with that for 1 and 2. The iron-zirconium complex FpZr(OCMe3)Cp2 (4) was transformed by one equivalent of CS2 to 3 (75% spectroscopic yield), a reaction that did not occur for FpZrClCp2. An insertion pathway is discussed for incorporating the CS2 into the Fe-Zr bond of FpZr(OCMe3)Cp2.
