New iridium catalysts for the selective alkylation of amines by alcohols under mild conditions and for the synthesis of quinolines by acceptor-less dehydrogenative condensation

Ruthenium-Catalyzed Amination of Secondary Alcohols using Borrowing Hydrogen Methodology

A new ruthenium complex catalyzes the amination of primary and secondary alcohols and the regioselective mono- and sequential diamination of diols via the borrowing hydrogen pathway. Several variations on new intra- and intermolecular cyclizations of aminoalcohols, diols and diamines lead to heterocyclic ring systems.

Ag@polypyrrole: A highly efficient nanocatalyst for the N-alkylation of amines using alcohols

We have synthesized Ag@polypyrrole nanomaterial by dispersing ultrafine silver nanoparticles (Ag NPs) over the organic polymer polypyrrole. The Ag@polypyrrole material has been characterized by powder X-ray diffraction (PXRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), electron paramagnetic resonance (EPR), Fourier transform infrared (FT-IR), ultraviolet-visible absorption (UV-vis) and atomic adsorption spectroscopy (AAS), and thermogravimetric analysis (TGA). The XRD pattern suggested the cubic crystalline phase of Ag NPs in Ag@polypyrrole. TEM image analysis revealed that silver nanoparticles are highly dispersed in the polymer matrix. The Ag@polypyrrole acts as an efficient and versatile heterogeneous nanocatalyst in the N-alkylation of amines using alcohols. The catalyst can be easily prepared, highly robust and reused several times without decrease in its catalytic activity.

Three-step synthesis of l-ido-1-deoxynojirimycin derivatives by reductive amination in water, “borrowing hydrogen” under neat conditions and deprotection

A three-step synthesis of l-ido-1-deoxynojirimycin derivatives, starting from readily available 2,3,4,6-tetra-O-benzyl-d-glucopyranose via Ir-catalyzed reductive amination in water, “borrowing hydrogen” under neat conditions, and Pd-catalyzed debenzylation, is reported.

An annulative transfer hydrogenation strategy enables straightforward access to tetrahydro fused-pyrazine derivatives

A ruthenium-catalyzed annulative transfer hydrogenation strategy, enabling straightforward access to tetrahydro fused-pyrazine derivatives from N-heteroaryl diamines and vicinal diols, is demonstrated.

DFT study on the iridium-catalyzed multi-alkylation of alcohol with ammonia

The catalytic mechanism for the multi-alkylation of benzyl alcohols with ammonia catalyzed by the water-soluble catalyst, [Cp*Ir^III(NH₃)₃][I]₂, is computationally investigated by density functional theory (DFT).

An efficient heterogenized palladium catalyst for N-alkylation of amines and α-alkylation of ketones using alcohols

Silica supported palladium–NiXantphos complex is an efficient and high turnover heterogeneous catalyst for N-alkylation of amines and α-alkylation of ketones using alcohols under neat conditions at 120–140 °C following hydrogen borrowing strategy.

Room temperature N-alkylation of amines with alcohols under UV irradiation catalyzed by Cu–Mo/TiO2

Cu–Mo/TiO₂ can be an active photocatalyst for N-alkylation of amines with alcohols under UV irradiation at room temperature without the addition of noble metals.

Substitution of alcohols by N-nucleophiles via transition metal-catalyzed dehydrogenation

This review summarizes the recent advances in transition metal-catalyzed dehydrogenative substitution of alcohols by N-nucleophiles since 2009.