Chemoselective formation of cyclo-aliphatic and cyclo-olefinic 1,3-diols via pressure hydrogenation of potentially biobased platform molecules using Knölker-type catalysts
(Cyclopentadienone)iron Shvo Complexes: Synthesis and Applications to Hydrogen Transfer Reactions
作者:Tarn C. Johnson、Guy J. Clarkson、Martin Wills
DOI:10.1021/om101101r
日期:2011.4.11
A series of (cyclopendienone)iron tricarbonylcomplexes were prepared using an intramolecular cyclization strategy. These were applied to the catalysis of the oxidation of alcohols to aldehydes and ketones. When paraformaldehyde was used as the hydrogen acceptor, formate esters were obtained as coproducts and, in several cases, the major products.
Microwave-assisted synthesis of cyclopentadienone iron tricarbonyl complexes: molecular structures of [{η4-C4R2C(O)C4H8}Fe(CO)3] (R = Ph, 2,4-F2C6H3, 4-MeOC6H4) and attempts to prepare Fe(II) hydroxycyclopentadienyl–hydride complexes
作者:Christian J. Richard、Derek Macmillan、Graeme Hogarth
DOI:10.1007/s11243-018-0229-1
日期:2018.8
clean formation of cyclopentadienone complexes [η4-C4R2C(O)C4H8}Fe(CO)3] in good yields resulting from a [2 + 2 + 1] cycloaddition. The molecularstructures of three examples (R = Ph, 2,4-F2C6H3, 4-MeOC6H4) have been obtained. The addition of HBF4 leads to the clean and reversible formation of cationic hydroxycyclopentadienyl complexes [η5-C4R2C(OH)C4H8}Fe(CO)3][BF4]. Sequential addition of hydroxide
Cooperative Iron–Oxygen–Copper Catalysis in the Reduction of Benzaldehyde under Water-Gas Shift Reaction Conditions
作者:Arundhoti Chakraborty、R. Garrison Kinney、Jeanette A. Krause、Hairong Guan
DOI:10.1021/acscatal.6b01994
日期:2016.11.4
for the reduction of PhCHO under water-gas shift conditions; 4a exhibits higher activity than 4b/4b′. Control experiments with monometallic species establish the cooperativity between a bifunctional iron fragment and a copper fragment during the catalytic reaction. A mechanistic investigation including stoichiometric reactions, various control experiments, and labeling studies has led to the proposal
A highly selective earth-abundant photocalytic system, based on an in situ copper photosensitizer and an iron catalyst, was developed for the CO2-to-CO transformation.
The photochemical exchange of all three carbonyl ligands with acetonitrile converts tricarbonyliron-dienecomplexes into the very labile triacetonitrile-iron-diene complexes. These easily demetalate in high yields to the corresponding free ligands on injection of air at -30°C [Eq. (1)]. The noveldemetalation procedure is applied to the tricarbonyliron complexes of cyclopentadienones, cyclohexa-1,3-dienes