An efficient copper-catalyzed carbenoid insertion reaction of α-diazo carbonyl compounds into Si-H and S-H bonds was developed. A wide range α-silylesters α-thioesters obtained in high yields (up to 98%) from α-diazoesters using 5 mol% a simple copper(I) salt as catalyst. Using 0.05 the same catalyst, α-diazoketones led α-silylketones low good 70%).

An efficient iron-catalyzed carbene insertion reaction of α-diazo carbonyl compounds into the Si–H bond was developed. A wide range α-silylesters obtained in high yields (up to 99%) from α-diazoesters using a simple iron(II) salt as catalyst.

Employing KF/Clinoptilolite as an efficient base the cross-coupling reactions of various phenols with aryl iodides could be successfully carried out in presence copper oxide nanoparticles. The C–O coupling products were obtained moderate to good yields (62–87%) for a variety substrates.

Fe(OTf)₂was used to catalyze the insertion reaction of α-diazocarbonyls into S–H bonds at 40 °C.

The insertion reaction of a broad range diazo compounds into Si-H bonds was found to be efficiently catalysed by Fe(OTf)2 in an emerging green solvent i.e. dimethyl carbonate (DMC). α-silylated products were obtained good excellent yields (up 95%). Kinetic studies showed that the extrusion N2 form iron carbene intermediate is rate-limiting. iron-catalysed methyl α-phenyl-α-diazoacetate polar X-H (S-H, N-H, and O-H) also established DMC.

A highly enantioselective FeII-catalyzed thia-Michael addition to α,β-unsaturated carbonyl derivatives was developed. The scope of the reaction demonstrated with a selection aromatic, heterocyclic and aliphatic thiols, various Michael acceptors. corresponding β-thioethers were obtained in good excellent yields (up 98%) moderate enantioselectivities 96:4 er). Unusual hepta-coordination metal chelation oxazolidin-2-one allowed construction coherent model rationalizing event. DFT calculations...

CsF/clinoptilolite was found to be an efficient solid base catalyst for both S N Ar and Ullmann ether reactions. A general one-step procedure developed the synthesis of biaryl ethers via direct coupling electron-deficient aryl halides phenols using CsF/clinoptilolite. The protocol also applied electron-rich by addition a catalytic amount copper oxide nanoparticles. Both reactions were rapid provided good excellent yields.

A convenient Fe(OTf) 2 ‐catalyzed Michael addition reaction of thiols to α,β‐unsaturated carbonyl compounds was developed. The use a simple procedure (EtOH, room temperature, air atmosphere) allowed set up effective green catalytic conditions for C–S bond formation. scope the demonstrated using various substituted and original acceptors. corresponding β‐thioethers were obtained in good excellent yields (up 99 %). Also, derivatization into one‐pot thia ‐Michael addition/oxidation...

Potassium fluoride-clinoptilolite, which is prepared from commercially available and cheap starting materials, was used as an efficient recyclable catalyst for Knoevenagel condensation of aromatic aldehydes with active methylene compounds under ultrasound irradiation. Short reaction times, high yields products, ease recovery reusability make this new method economic efficient. Keywords: Condensation, KF-clinoptilolite, Knoevenagel, ultrasounds, zeolites.

Abstract Nanoporous silica anchored with sulfonic acid groups effectively catalyzes the iodination of aromatic compounds. The reaction was performed in water using hydrogen peroxide as oxidant. recyclability catalyst green media significantly contributes to environmental friendliness procedure.

C2 symmetrical 6,6′-bis(oxazolinyl)-2,2′-bipyridine (bipybox) chiral ligands have been synthesized from readily available 2,2′-bipyridine. Catalytic asymmetric hydrosilylation of ketones was studied using this family in the presence iron(II) acetate.

Abstract The cheap and very efficient title reaction of ethyl cyanoacetate or malononitrile with aryl hetarylaldehydes is described.

Abstract The products are obtained in much lower yields when aryl bromides used.

Abstract Review: 174 refs.

Abstract It is demonstrated that the exceedingly strong base KF on clinoptilotite highly efficient for selective 1,4‐Michael addition of different donors to chalcones give adducts in excellent yields.

Abstract Nanoporous silica‐supported sulfuric acid effectively catalyzes the iodination of aromatic compounds.