Sonicated Assisted Synthesis of Benzimidazoles, Benzoxazoles and Benzothiazoles in Aqueous Media

Pardeshi, S. D.; Sonar, J. P.; Pawar, Shivaji S.; Dekhane, Deepak V.; Gupta, Sunil; Zine, A. M.; Thore, Shivaji N.

doi:10.4067/s0717-97072014000100020

Cited by 7 publications

(3 citation statements)

References 27 publications

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“…hemistry 2024, 6, FOR PEER REVIEW 19 Scheme 16. Ultrasound-assisted synthesis of 2-substituted BT derivatives [88,89].…”

Section: (D) Acid-catalyzed Preparation Of 2-substituted Btsmentioning

confidence: 99%

“…Pardeshi and his group [89] designed an ultrasound-assisted production of 2-substituted BTs via 2-ABT with aromatic aldehydes catalyzed by ammonium nickel sulfate (Scheme 16, Method 2). The desired compounds were obtained at a yield of 83-91% in 85-115 min and the yields were not influenced by the essence of the substituents.…”

Section: (D) Acid-catalyzed Preparation Of 2-substituted Btsmentioning

confidence: 99%

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Pioneering Synthetic Strategies of 2-Substituted Benzothiazoles Using 2-Aminothiophenol

Teli,

Sethiya,

Agarwal

2024

Chemistry

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Heterocycles, compounds featuring heteroatoms like nitrogen, sulfur, and oxygen, are integral in fields such as synthesis, pharmacology, and medicine. Among these, benzothiazoles, formed by fusing thiazole with benzene, hold significant prominence. Their unique reactivity, especially at the carbon position between nitrogen and sulfur, has sparked wide interest. Notably, 2-substituted benzothiazoles exhibit diverse biological activities, including anticonvulsant, antimicrobial, and antioxidant properties, making them valuable in drug discovery. This review unveils an array of mesmerizing methods employed by chemists to prepare these compounds using 2-aminothiophenol as one of the precursors with other varied reactants. From novel strategies to sophisticated methodologies, each section of this review provides a glimpse into the fascinating world of synthetic chemistry of 2-substituted benzothiazoles. Delving into the diverse synthetic applications of 2-substituted benzothiazoles, this paper not only enriches our understanding of their synthesis but also sparks the imagination with the possibilities for future advancements.

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“…hemistry 2024, 6, FOR PEER REVIEW 19 Scheme 16. Ultrasound-assisted synthesis of 2-substituted BT derivatives [88,89].…”

Section: (D) Acid-catalyzed Preparation Of 2-substituted Btsmentioning

confidence: 99%

Section: (D) Acid-catalyzed Preparation Of 2-substituted Btsmentioning

confidence: 99%

Pioneering Synthetic Strategies of 2-Substituted Benzothiazoles Using 2-Aminothiophenol

Teli,

Sethiya,

Agarwal

2024

Chemistry

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“…Synthesis of substituted benzimidazole were also carried out in ultrasonic and microwave irradiation by using FeCl3/Al2O3 [43], ammonium nickel sulphate [44], montmorillonite KSF [45], SnCl2 [46], and zeolite [47] as catalyst.…”

Section: Introductionmentioning

confidence: 99%

Recyclable Nanocrystalline Copper Based on MoO3/SiO2 as an Efficient Catalyst for Acylation of Amines

Dagade

Deshmukh

2018

Bull. Chem. React. Eng. Catal.

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Various loadings of copper supported on MoO3/SiO2 (CMS) were prepared by sol-gel method and used for the synthesis of substituted benzimidazole. Further it was characterized by using X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX), Transmission Electron Microscopy (TEM), and acidity measurement by potentiometric method. XRD results indicated that Cu is present on the support primarily as CuO. The SEM and TEM results showed dispersion of cubic CuO nanoparticles on the surface. These mixed oxides were studied for the acylation of o-phenylene diamine with acetic acid in liquid phase. 10 wt. % CMS gave best results at 110 ºC with 94.81 % conversion of ophenylene diamine and 100 % selectivity of substituted benzimidazole. Different parameters were studied for optimization of acylation, such as: temperature, acylating agents, solvents, amount of catalyst, and different catalysts. The CMS catalyst could also be recovered and reused at three times without any discernible decrease in its catalytic activity.

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2-aminophenol as a leading reactant for the one pot synthetic strategies towards benzoxazole derivatives: A systematic review

Sharma

Mishra²,

Bhadoria³

2022

Results in Chemistry

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Sonicated Assisted Synthesis of Benzimidazoles, Benzoxazoles and Benzothiazoles in Aqueous Media

Cited by 7 publications

References 27 publications

Pioneering Synthetic Strategies of 2-Substituted Benzothiazoles Using 2-Aminothiophenol

Pioneering Synthetic Strategies of 2-Substituted Benzothiazoles Using 2-Aminothiophenol

Recyclable Nanocrystalline Copper Based on MoO3/SiO2 as an Efficient Catalyst for Acylation of Amines

2-aminophenol as a leading reactant for the one pot synthetic strategies towards benzoxazole derivatives: A systematic review

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