[reaction: see text] A short and convenient diastereoselective synthesis of all-carbon spirocylic molecules was developed. A straightforward protocol that involves rearrangement of the diene-Fe(CO)(3) complex followed by cyclization delivers the desired product. The reaction substrates were easily prepared by reaction of an appropriate nucleophile and a cyclohexadienyl-Fe(CO)(3) cation.
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http://dx.doi.org/10.1021/ol040036m | DOI Listing |
Talanta
January 2025
College of Chemistry and Chemical Engineering, Donghua University, Shanghai, 201620, China. Electronic address:
Lysine (Lys), Cu and Fe ions and biothiols are essential to a myriad of biological and pathological pathways, and their dysregulation is implicated in a variety of diseases. Development of fluorescent probes capable of detecting multiple analytes may be of great significance for early and accurate diagnosis of diseases and remains a huge challenge. In this context, a novel coumarin-dicyanoisophorone-based probe, engineered for the concurrent sensing of Lys, Cu, Fe and biothiols was developed.
View Article and Find Full Text PDFSci Total Environ
November 2021
College of Architecture & Environment, Sichuan University, Chengdu 610065, China. Electronic address:
Slow reduction of Fe(III) in iron-mediated Fenton-like systems strongly limits the decomposition of HO to produce hydroxyl radicals (OH). Here, we report that graphene oxide (GO) possesses excellent reactivity to enhance the Fe(III)/HO Fenton and photo-Fenton oxidation for degrading chloramphenicol (CAP). EPR analysis and quenching tests reveal that OH is the primary oxidant for CAP degradation.
View Article and Find Full Text PDFOrg Lett
May 2018
Key Laboratory of Green Chemistry &Technology of Ministry of Education, College of Chemistry , Sichuan University, Chengdu 610064 , China.
An iron-catalyzed perezone-type [5 + 2] cycloaddition toward tricyclo[6.3.1.
View Article and Find Full Text PDFOrg Biomol Chem
March 2016
The Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China.
An efficient one-pot intermolecular reductive cross-coupling of unactivated primary and secondary alkyl chlorides bearing β-hydrogens with aryl bromides is described. A combination of magnesium turnings and a catalytic amount of the commercially available iron(iii) complex Fe(PPh3)2Cl3 was used, and the conditions were also successfully extended to an intramolecular reaction for the first time. Both types of cross-coupling reactions proceed under mild conditions, involving the in situ generation of aryl Grignard reagents, and show good applicability to a variety of readily available unactivated alkyl chlorides, which have previously been challenging substrates in iron-catalyzed reductive cross-coupling reactions.
View Article and Find Full Text PDFInorg Chem
January 2016
State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), Dalian 116024, China.
A series of pendant amine-containing [FeFe]-hydrogenase models, [X(CH2S-μ)2{Fe(CO)3}{Fe(CO)(P2(Ph)N2(Bn))}] (1H, X = CH2; 2Me, C(CH3)2; 3Et, C(CH2CH3)2; and P2(Ph)N2(Bn) = 1,5-dibenzyl-3,7-diphenyl-1,5-diaza-3,7-diphosphacyclooctane) with different groups at the bridgehead carbon of the S-to-S linker were synthesized. The oxidations of these complexes as well as the reverse reduction reaction were studied by cyclic voltammetry and in situ IR spectroscopy. Regardless of the bridgehead steric bulk, all three complexes demonstrate intramolecular iron-mediated C(sp(3))-H bond heterolytic cleavage with the assistance of the pendant amine base within the chelating diphosphine ligand in the two-electron oxidation process.
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