Novel green synthetic approach for liquid crystalline materials using multi-component reactions

Shanker, Govindaswamy; Srinatha, M.K.; Kumari, D; Ranjitha, B.S.; Alaasar, Mohamed

doi:10.1016/j.molliq.2021.118244

Cited by 4 publications

(1 citation statement)

References 57 publications

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“…Multi-component reactions have been considered suitable methods for the preparation of many biologically active organic and pharmacological compounds. , However, the previous methods are associated with limitations such as use of expensive raw materials, harsh reaction conditions, long reaction times, and low efficiencies. Therefore, research and development toward novel methods, especially the introduction of targeted catalysts, is an urgent need.…”

Section: Introductionmentioning

confidence: 99%

Application of Metal–Organic Frameworks with Sulfonic Acid Tags in the Synthesis of Pyrazolo[3,4-b]pyridines via a Cooperative Vinylogous Anomeric-Based Oxidation

et al. 2023

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Herein, we report the design and synthesis of Co-MOF-71/imidazole/SO3H as a novel porous catalyst with sulfonic acid tags. The structure and morphology of the catalyst were investigated using various techniques such as Fourier transform-infrared spectroscopy (FT-IR), X-ray diffraction, scanning electron microscopy (SEM), SEM elemental mapping, energy-dispersive X-ray spectroscopy, Barret–Joyner–Halenda, and N2 adsorption–desorption isotherms. Co-MOF-71/imidazole/SO3H was studied in the preparation of novel pyrazolo[3,4-b]pyridines under mild and green conditions via a cooperative vinylogous anomeric-based oxidation. A wide range of mono and bis pyrazolo[3,4-b]pyridines were synthesized with good to excellent yields (65–82%). A hot filtration test for the heterogeneous nature of the catalyst indicated the high stability of the prepared catalyst. The recyclability of Co-MOF-71/imidazole/SO3H is another advantage of the present methodology. The structures of the final products were confirmed using FT-IR, 1H-NMR, and 13C-NMR spectroscopic techniques.

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Section: Introductionmentioning

confidence: 99%

Application of Metal–Organic Frameworks with Sulfonic Acid Tags in the Synthesis of Pyrazolo[3,4-b]pyridines via a Cooperative Vinylogous Anomeric-Based Oxidation

et al. 2023

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Transition‐metal‐catalyzed Heteroannulation Reactions in Aqueous Medium

Dawood

Alaasar

2022

Asian J Org Chem

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Water, as green solvent, was reported as a suitable solvent for a huge number of catalyzed organic transformations. The suitability of several transition metal catalysts, such as palladium, ruthenium, rhodium, gold, silver, copper, nickel, cobalt, platinum, iridium, indium and cerium for organic heteroannulation reactions in water (as a pure solvent), in a mixed water/organic solvent or in the presence of a stoichiometric ratio of water were also extensively reviewed. Such catalysts played important roles in modern organic syntheses and heteroannulation reactions. In addition, the use of multicomponent reaction pathways under different heating tools (conventional, microwave or ultrasound) were also discussed.

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A versatile approach for one-pot synthesis of hybridized quinolines linked to fused N-containing heterocycles in water

Rezvanian,

Khodadadi,

Tafreshi

et al. 2023

Mol Divers

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Novel green synthetic approach for liquid crystalline materials using multi-component reactions

Cited by 4 publications

References 57 publications

Application of Metal–Organic Frameworks with Sulfonic Acid Tags in the Synthesis of Pyrazolo[3,4-b]pyridines via a Cooperative Vinylogous Anomeric-Based Oxidation

Application of Metal–Organic Frameworks with Sulfonic Acid Tags in the Synthesis of Pyrazolo[3,4-b]pyridines via a Cooperative Vinylogous Anomeric-Based Oxidation

Transition‐metal‐catalyzed Heteroannulation Reactions in Aqueous Medium

A versatile approach for one-pot synthesis of hybridized quinolines linked to fused N-containing heterocycles in water

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