Cited by Ruthenium catalyzed dehydrogenative α-C–H functionalization of β-naphthol using alcohols: a metal–ligand cooperative borrowing hydrogen approach

Highly dispersed ruthenium capsulated in UiO-66-NH₂ for hydrogen-borrowing-mediated N-alkylation reactions DOI

Jiahao Li,

Shiguo Ou,

Xinxin Sang

et al.

Catalysis Science & Technology, Journal Year: 2024, Volume and Issue: 14(7), P. 1958 - 1966

Published: Jan. 1, 2024

Herein, atomically dispersed Ru sites are encapsulated within UiO-66–NH 2 frameworks to serve as a highly active, selective, and stable catalyst for amine synthesis via N -alkylation reactions of o -phenylenediamine with monohydric alcohols.

Language: Английский

Citations

Efficient N-Methylation of Primary Amides Using Methanol Under Mn(I)-Catalysis DOI

Reshma Babu,

Smruti Reka Pathy,

Ekambaram Balaraman

et al.

Tetrahedron, Journal Year: 2025, Volume and Issue: unknown, P. 134535 - 134535

Published: Feb. 1, 2025

Language: Английский

Citations

Heterogeneous Mn@CeO₂ Catalyst for α-Alkylation of Ketones with Alcohols via Hydrogen-Borrowing Strategy DOI

Rajagopal Swaathy,

S. Karthikeyan

ACS Omega, Journal Year: 2025, Volume and Issue: 10(9), P. 9649 - 9660

Published: Feb. 24, 2025

Construction of a C-C bond via alkylation ketones with alcohol as the alkylating source by employing hydrogen-borrowing strategy is attracting significant attention and highly appealing due to its simplicity, cost-effectiveness, environmental benefits, fact that water only byproduct. The development heterogeneous catalysts based on nonprecious base metals progressing rapidly. Our newly disclosed manganese-doped cerium oxide nanocomposite (10 wt % Mn@CeO2) stands out cost-efficient air-stable catalyst, synthesized through straightforward coprecipitation method employed for α-alkylation primary alcohols strategy. X-ray diffraction (XRD) analysis confirms high crystallinity CeO2, while field emission scanning electron microscopy (FE-SEM) high-resolution transmission (HR-TEM) images reveal MnO2 nanoparticles, measuring 19 nm in size, uniformly decorated rod-shaped CeO2 which have size 33 nm. photoelectron spectroscopy (XPS) uncovers presence Mn4+ species embedded nanorods. Electron paramagnetic resonance (EPR) further indicates surface defects contribute impressive catalytic yield, ranges from 70 98% α-alkylated ketones. Thermogravimetric (TGA) demonstrates remarkable thermal stability maintaining up 800 °C. Additionally, inductively coupled plasma mass spectrometry (ICP-MS) no leaching Mn ions, emphasizing heterogeneity catalyst. Remarkably, 10 Mn@CeO2 recycled six cycles loss activity. This study underscores synergistic effect between metal redox pair key exceptional activity reactions, making promising catalyst sustainable efficient formation.

Language: Английский

Citations

Mn(I)‐NNSe Pincer Complex Catalyzed Regioselective Synthesis of Bisindolylmethanes under Base and Solvent‐Free Conditions DOI

Suman Mahala, P S Rakesh, Sohan Singh

et al.

Asian Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: May 23, 2025

Abstract Here, we present a catalytic, regioselective synthesis of bisindolylmethanes through the reaction indoles and benzyl alcohol derivatives mediated by metal‐ligand cooperative catalysis. The is catalyzed an earth‐abundant manganese‐NNSe pincer complex without need for base, solvent, additives, or hydrogen acceptors yielding water dihydrogen as environmentally friendly by‐products. Notably, C‐3 N ‐alkylation indole, commonly observed in similar reactions were not detected. Mechanistic studies suggest that catalysis Mn(I)‐NNSe initiates conversion to benzaldehyde elimination, which subsequently facilitates bisindolylmethane derivatives. To highlight practical utility this method, wide range substrates can be activated with low catalyst loading under mild conditions.

Language: Английский

Citations

Manganese-catalyzed C–C and C–N bond formation with alcohols via borrowing hydrogen or hydrogen auto-transfer DOI

Mohd Farhan Ansari,

Atul Kumar Maurya, Abhishek Kumar

et al.

Beilstein Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 20, P. 1111 - 1166

Published: May 21, 2024

Transition-metal-mediated "borrowing hydrogen" also known as hydrogen auto-transfer reactions allow the sustainable construction of C-C and C-N bonds using alcohols donors. In recent years, manganese complexes have been explored efficient catalysts in these reactions. This review highlights significant progress made manganese-catalyzed bond-formation via auto-transfer, emphasizing importance this methodology synthesis strategies.

Language: Английский

Citations

Palladium-Catalyzed C3-Alkylation of Indoles with Alcohols Via Hydrogen Borrowing Cascade DOI

Hongjun Zhu,

Zhiyuan Liu,

Mushou Cai

et al.

Published: Jan. 1, 2024

Indole represents a privileged scaffold extensively used in drug design due to its promise improve both binding affinity and specificity receptors. Direct functionalization of indole framework is an efficient route achieve structurally diverse derivatives. Herein, highly regio-selective C3-alkylation indoles via hydrogen borrowing methodology (HBM) has been established using alcohols as the alkylation reagents over pallidum catalysis. This method enables synthesis C3-alkylated indoles, demonstrating high group adaptability alcohol substrates (20 examples, up 94% yield).

Language: Английский

Citations

Ruthenium catalyzed dehydrogenative α-C–H functionalization of β-naphthol using alcohols: a metal–ligand cooperative borrowing hydrogen approach DOI

Amit Kumar Guin, Santana Chakraborty,

Subhankar Khanra

et al.

Catalysis Science & Technology, Journal Year: 2024, Volume and Issue: 14(12), P. 3540 - 3549

Published: Jan. 1, 2024

Chemoselective α-C–H functionalization of β-naphthol is achieved with inexpensive and readily available alcohols using a well-defined, air-stable, easy-to-prepare Ru( ii )-catalyst (1a) bearing redox-active tridentate pincer ( L 1a).

Language: Английский

Citations