Recent advances in the synthesis of heterocycles via reactions involving elemental sulfur

TB Nguyen - Advanced Synthesis & Catalysis, 2020 - Wiley Online Library
It is well known that heterocycles are among the most significant molecules for everyday life,
ranging from natural products and bioactive substances to functional materials. This review …

Transition-Metal-Free Transfer Hydrogenative Cascade Reaction of Nitroarenes with Amines/Alcohols: Redox-Economical Access to Benzimidazoles

AK Kabi, R Gujjarappa, A Roy, A Sahoo… - The Journal of …, 2021 - ACS Publications
This report describes an efficient transition-metal-free process toward the transfer
hydrogenative cascade reaction between nitroarenes and amines or alcohols. The …

Rapid and simple microwave-assisted synthesis of benzoxazoles catalyzed by [cholineCl][oxalic acid]

PT Pham, HT Nguyen, TT Nguyen, LHT Nguyen… - Catalysts, 2022 - mdpi.com
Microwave irradiation has been used to enhance the reaction yields and selectivities for
organic transformation. In this paper, microwave irradiation (MW) was investigated for the …

Using sulfate-functionalized Hf-based metal–organic frameworks as a heterogeneous catalyst for solvent-free synthesis of pyrimido [1, 2-a] benzimidazoles via one …

MHD Dang, LHT Nguyen, TTT Nguyen, NXD Mai… - Journal of Industrial and …, 2021 - Elsevier
Functionalized metal–organic frameworks have recently received significant attention in
heterogeneous catalysis applications due to their high catalytic activity. In this work, a sulfate …

Deep eutectic solvent as a green catalyst for the one-pot multicomponent synthesis of 2-substituted benzothiazole derivatives

VA Truong, MH Tran, TH Nguyen, HT Nguyen - RSC advances, 2024 - pubs.rsc.org
The need for diverse essential chemicals and resources has markedly risen alongside the
advancement of civilization. Regrettably, many toxic solvents used in chemical laboratories …

A NaHCO3 Promoted Three‐component Cyclization: Easy Access to Benzodisulfide Heterocycles

YJ Zhou, K Yang, YG Fang, SH Luo… - Asian Journal of …, 2022 - Wiley Online Library
A facile route for the synthesis of benzodisulfide heterocyclic compounds via a NaHCO3‐
promoted three‐component reaction between 2‐halophenylacetic acids, elemental sulfur …

Step-and atom-economical synthesis of 2-aryl benzimidazoles via the sulfur-mediated redox condensation between o-nitroanilines and aryl methanols

HX Le, KD Nguyen, NTS Phan, HV Le, TT Nguyen - Tetrahedron, 2022 - Elsevier
The synthesis of benzimidazoles usually requires use of expensive and sensivitve
substrates such as phenylenediamine and aldehyde or metal catalysts. In this work, 2 …

Elemental Sulfur Mediated Synthesis of Pyrrolo [1, 2-a] quinoxalines from 1-(2-Nitroaryl) pyrroles

TH Ho, NTA Phan, TTC Ho, DLM Tran, TT Nguyen… - …, 2021 - thieme-connect.com
Methods to afford pyrrolo [1, 2-a] quinoxalines often require the use of prefunctionalized
aniline precursors, transition metals, and/or harsh conditions. Herein we describe a simple …

Synthesis, Characterization and DFT-D Studies of 2-Aminoethoxycalix [4] resorcinarenes: A Novel Heterogeneous Organocatalyst

AM Shebitha, M Shaibuna, K Hiba, K Sreekumar - Catalysis Letters, 2022 - Springer
The present article reports the synthesis of two novel supramolecular architectures, Phenyl
(octa-2-aminoethoxy) calix [4] resorcinarene and 2-Aminoethoxyphenyl-(octa-2 …

One-pot synthesis, crystal structure, hirshfeld, DFT and anticancer study of ethyl 2-(3-fluoro-4-methylphenyl)-1-propyl-1H-benzo [d] imidazole-5-carboxylate

V Kumar, K Vidyashree, BS Kalal, SM Kumar… - Chemical Data …, 2020 - Elsevier
In the present study, a novel ethyl 2-(3-fluoro-4-methylphenyl)-1-propyl-1H-benzo [d]
imidazole-5-carboxylate was synthesized by an efficient one-pot nitro reductive cyclization …