Synthesis of Substituted Benzimidazoles and Benzoxazoles by Iron‐catalysed Reductive Carbonylation of Aryl Iodides DOI

Sarma V. Markandeya,

Parvathi K. Lakshmi,

Sridhar Chidara

et al.

ChemistrySelect, Journal Year: 2024, Volume and Issue: 9(27)

Published: July 16, 2024

Abstract This work describes a novel iron‐catalysed approach for the synthesis of aryl‐substituted benzimidazoles and benzoxazoles. The methodology employs reductive carbonylation using readily available aryl iodides amines as precursors, with carbon monoxide serving efficient carbonyl source. reaction proceeds under mild conditions addition hydrosilanes bases. Notably, aldehydes are generated in situ from iodides, which subsequently react o‐phenylenediamine or 2‐aminophenol to afford desired products high yields. structures synthesized benzoxazoles were confirmed 1 H 13 C NMR spectroscopy mass spectrometry.

Language: Английский

One-pot synthesis of 2,4,5-triarylimidazole and phenanthro[9,10-d]imidazole derivatives catalyzed by a new set of crystalline aluminium(III) complexes via C N bond formation DOI

Mahabarathi Subramaniyan,

Madhvesh Pathak

Inorganica Chimica Acta, Journal Year: 2025, Volume and Issue: unknown, P. 122596 - 122596

Published: Feb. 1, 2025

Language: Английский

Citations

0
Potassium Periodate Catalysis for Benzimidazoles Synthesis: Analysis of Microwave Irradiation Versus Conventional Methods DOI

Gyanendra Chaudhary,

Aman Verma,

Bappa Manna

et al.

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(16)

Published: April 1, 2025

Abstract Potassium periodate (KIO 4 ) catalyzed novel, efficient and highly regioselective one‐pot synthesis of substituted benzimidazoles has been carried out in good to excellent yields via condensation–cyclisation reactions involving a variety aldehydes o ‐phenylenediamines. As catalyst, KIO shows compatibility with various substrates, easy removal, handling, operational simplicity, work mild reaction conditions. A comparative study, microwave (MW) versus conventional method, for synthesizing 2‐substituted catalysis is also described. It was observed that the irradiation approach improves yield minimizes time (from hour min), represents more advantageous eco‐friendly quicker chemistry.

Language: Английский

Citations

0
NiII-containing l-glutamic acid cross-linked chitosan anchored on Fe3O4/f-MWCNT: a sustainable catalyst for the green reduction and one-pot two-step reductive Schotten–Baumann-type acetylation of nitroarenes DOI Creative Commons
Hossein Mousavi, Behzad Zeynizadeh, Morteza Hasanpour Galehban

et al.

Nanoscale Advances, Journal Year: 2024, Volume and Issue: 6(15), P. 3961 - 3977

Published: Jan. 1, 2024

In this research, new catalytic applications of the Fe 3 O 4 / f -MWCNT-CS-Glu/Ni II nanocomposite have been introduced for efficient reduction and one-pot two-step reductive Schotten–Baumann-type acetylation nitroarenes in water.

Language: Английский

Citations

3
Synthesis of Substituted Benzimidazoles and Benzoxazoles by Iron‐catalysed Reductive Carbonylation of Aryl Iodides DOI

Sarma V. Markandeya,

Parvathi K. Lakshmi,

Sridhar Chidara

et al.

ChemistrySelect, Journal Year: 2024, Volume and Issue: 9(27)

Published: July 16, 2024

Abstract This work describes a novel iron‐catalysed approach for the synthesis of aryl‐substituted benzimidazoles and benzoxazoles. The methodology employs reductive carbonylation using readily available aryl iodides amines as precursors, with carbon monoxide serving efficient carbonyl source. reaction proceeds under mild conditions addition hydrosilanes bases. Notably, aldehydes are generated in situ from iodides, which subsequently react o‐phenylenediamine or 2‐aminophenol to afford desired products high yields. structures synthesized benzoxazoles were confirmed 1 H 13 C NMR spectroscopy mass spectrometry.

Language: Английский

Citations

1