A general and inexpensive protocol for the nanomagnetic 5-sulfosalicylic acid catalyzed the synthesis of tetrahydrobenzo[b]pyrans and quinoxaline derivatives

Saboury, Farzaneh; Azizi, Najmedin; Mirjafari, Zohreh; Hashemi, Mahmoud Reza

doi:10.1007/s13738-020-01948-5

Cited by 13 publications

(7 citation statements)

References 54 publications

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“…The Sg─CN nanocatalysts was synthesized using our previous procedure [24]. The morphology and elemental analysis of the Sg─CN characterized by SEM and EDX mapping.…”

Section: Resultsmentioning

confidence: 99%

“…Nanomaterial-based catalysts play a significant role in various chemical transformations [24][25][26], due to the selectivity, low toxicity, good stability, simple surface functionalization, and magnetic separation [27,28]. Carbon materials such as activated carbons, graphene, and graphitic carbon nitride are environmentally acceptable and cheap nanomaterials, combining efficient use of energy and resources in heterogeneous catalysis [29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

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A rapid and quantitative synthesis of xanthene derivatives using sulfonated graphitic carbon nitride under ball‐milling

Qareaghaj

Ghaffarzadeh

Azizi

2021

Journal of Heterocyclic Chem

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A truly green, solventless, and fast protocol for the quantitative preparation of biologically active xanthene derivatives with 10 mol% sulfonated graphitic carbon nitride (Sg─CN) as a heterogeneous acidic catalyst was developed. Excellent yields, low cost, solvent-free conditions, high catalytic activity, reusability of the catalyst, simple workup, and heterogeneous carbon-based catalyst make the present method particularly attractive from a green chemistry perspective.

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“…The Sg─CN nanocatalysts was synthesized using our previous procedure [24]. The morphology and elemental analysis of the Sg─CN characterized by SEM and EDX mapping.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A rapid and quantitative synthesis of xanthene derivatives using sulfonated graphitic carbon nitride under ball‐milling

Qareaghaj

Ghaffarzadeh

Azizi

2021

Journal of Heterocyclic Chem

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“…But it is the opposite for the EDGs, which were found to improve the rate of reaction and furnished quinoxaline derivatives in excellent yields (Scheme 9). 94…”

Section: Synthesis Of Quinoxaline Using Nano-based Catalystmentioning

confidence: 99%

“…But it is the opposite for the EDGs, which were found to improve the rate of reaction and furnished quinoxaline derivatives in excellent yields (Scheme 9). 94 Javidi et al explored the activity of Fe 3 O 4 @SiO 2 -imidazole-PMA magnetic porous nanosphere for the synthesis of quinoxaline derivatives. The prepared nanoparticles have spherical shapes with approximately 50 nm diameters and the size distribution of these is centered at a value of 55 nm.…”

Section: Iron-based Nanocatalysts For the Synthesis Of Quinoxalinesmentioning

confidence: 99%

Reusable nano-catalyzed green protocols for the synthesis of quinoxalines: an overview

et al. 2023

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“…Some of the previously reported works for the synthesis of tetrasubstituted imidazoles are shown in Table 1. [39][40][41][42][43] 2 | EXPERIMENTAL…”

Section: Introductionmentioning

confidence: 99%

A sustainable route toward the synthesis of highly substituted imidazole and quinoxaline derivatives using CuO@g‐C₃N₄ as an efficient and reusable heterogeneous catalyst

Gajurel

Sarkar

et al. 2023

Applied Organom Chemis

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This work demonstrates the preparation, characterization, and catalytic application of CuO@g‐C3N4 nanoparticles in synthesizing biologically and pharmaceutically important tetrasubstituted imidazole and quinoxaline derivatives. Highly substituted imidazoles of wide functionalities were synthesized in good yields (71%–85%) using EtOH as a solvent under refluxed conditions within 3–4 h. Similarly, a diverse range of quinoxaline derivatives were synthesized, which rendered moderate to good yield (65%–90%) of the products within 5–60 min in solvent‐free reaction conditions. The practical applicability of the developed protocol is shown by performing a gram‐scale reaction of quinoxaline. Furthermore, the reusability of the catalyst was studied up to the fifth consecutive cycle without much significant decrease in the activity of the catalyst. Additionally, the use of cheap metal and supported materials, shorter reaction time, high substrate scope, and easy recyclability of the catalyst are some of the salient features of the developed protocol.

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A general and inexpensive protocol for the nanomagnetic 5-sulfosalicylic acid catalyzed the synthesis of tetrahydrobenzo[b]pyrans and quinoxaline derivatives

Cited by 13 publications

References 54 publications

A rapid and quantitative synthesis of xanthene derivatives using sulfonated graphitic carbon nitride under ball‐milling

A rapid and quantitative synthesis of xanthene derivatives using sulfonated graphitic carbon nitride under ball‐milling

Reusable nano-catalyzed green protocols for the synthesis of quinoxalines: an overview

A sustainable route toward the synthesis of highly substituted imidazole and quinoxaline derivatives using CuO@g‐C₃N₄ as an efficient and reusable heterogeneous catalyst

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A general and inexpensive protocol for the nanomagnetic 5-sulfosalicylic acid catalyzed the synthesis of tetrahydrobenzo[b]pyrans and quinoxaline derivatives

Cited by 13 publications

References 54 publications

A rapid and quantitative synthesis of xanthene derivatives using sulfonated graphitic carbon nitride under ball‐milling

A rapid and quantitative synthesis of xanthene derivatives using sulfonated graphitic carbon nitride under ball‐milling

Reusable nano-catalyzed green protocols for the synthesis of quinoxalines: an overview

A sustainable route toward the synthesis of highly substituted imidazole and quinoxaline derivatives using CuO@g‐C3N4 as an efficient and reusable heterogeneous catalyst

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A sustainable route toward the synthesis of highly substituted imidazole and quinoxaline derivatives using CuO@g‐C₃N₄ as an efficient and reusable heterogeneous catalyst