Výsledky vyhledávání - "Ashok Dongamanti"

Akademický článek

Facile fabrication, characterization and enhanced heterogeneous catalytic reduction of 4-nitrophenol using undoped and doped ZrO2 nanoparticles

Autor: Guguloth Ravi, Dasari Ayodhya, Sarasija Madderla, Ashok Dongamanti

Publikováno v: Nanochemistry Research, Vol 4, Iss 1, Pp 43-54 (2019)

Here, we successfully developed the undoped, Ni2+, Cu2+, and Zn2+ doped Zirconia nanoparticles (ZrO2 NPs) by a simple co-precipitation method at room temperature and characterized by various physicochemical measurement techniques to investigate their

Externí odkaz: https://doaj.org/article/4cabe6871e2940bc896c9530e3571637

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Akademický článek

Microwave-assisted synthesis and antimicrobial evaluation of 6-[3-aryl-1-phenyl-4’,5’-dihydro[4,5’-bi-1H-pyrazol]-3’-yl]-2H-chromen-5-ols

Autor: Ashok Dongamanti, Kavitha Rangu, Gundu Srinivas, Sarasija Madderla

Publikováno v: Journal of the Serbian Chemical Society, Vol 84, Iss 3, Pp 237-244 (2019)

A new series of 6-[3-aryl-1-phenyl-4’,5’-dihydro[4,5’-bi-1H-pyrazol]-3’-yl]-2H-chromen-5-ol derivatives was synthesized by Michael addition of chalcones 5a–j with hydrazine hydrate in presence of sodium acetate under conventional heating an

Externí odkaz: https://doaj.org/article/341040acc0564f0480ec19c611c1a20b

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Akademický článek

Microwave-assisted synthesis of 2,8-di(alkyl/aryl)-4,6-dichloro-2H,8H-pyrano[3,2-g] chromene-3,7-dicarbaldehydes and their antimicrobial activity

Autor: Venkataramana Rupireddy, Chittireddy Venkata Ramana Reddy, Ashok Dongamanti, Rao Kudle Karunakar

Publikováno v: Journal of the Serbian Chemical Society, Vol 84, Iss 4, Pp 355-364 (2019)

A series of 2,8-di(alkyl/aryl)-substituted bischromanone derivatives were synthesized in one pot from 4,6-diacetylresorcinol and aliphatic/aromatic aldehydes in the presence of pyrrolidine/piperidine under conventional heating and microwave irradiati

Externí odkaz: https://doaj.org/article/4024e85a582d404aba068f5be4f9bd7d

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Akademický článek

Microwave assisted synthesis of 1H-tetrazole-based flavonoid derivatives and their antimicrobial activity

Autor: Ashok Dongamanti, Nagaraju Nalaparaju, Sarasija Madderla, Lakshmi Vijaya B.

Publikováno v: Journal of the Serbian Chemical Society, Vol 83, Iss 12, Pp 1305-1313 (2018)

A series of novel tetrazole scaffolds containing chalcones 4a–e and aurones 5a–e were synthesized under conventional and microwave irradiation conditions. All the newly synthesized compounds were characterized by IR, NMR and mass spectral data. F

Externí odkaz: https://doaj.org/article/b38dd53d1b6c447197631d38cc8a5285

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Akademický článek

Synthesis of novel pyrazoline based bis (1,2,3-triazole) scaffolds via click chemistry

Autor: Kiran Kothuri, Ashok Dongamanti, Rao Boddu Ananda, Sarasija Madderla, Rao Alapati Srinivas

Publikováno v: Journal of the Serbian Chemical Society, Vol 82, Iss 3, Pp 241-251 (2017)

A series of novel bis(1,2,3-triazoles) derivatives 7a–m were synthesized by the 1,3-dipolar cycloaddition (click-reaction) of 1-methyl-3,5-bis(2- -(prop-2-yn-1-yloxy)phenyl)-4,5-dihydro-1H-pyrazole (5) with various aralkyl azides 6a–m in the pres

Externí odkaz: https://doaj.org/article/cae15db30b674738a593f24f18c6cd14

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Akademický článek

Microwave-assisted synthesis of new pyrazole derivatives bearing 1,2,3-triazole scaffold as potential antimicrobial agents

Autor: Ashok Dongamanti, Kavitha Rangu, Gundu Srinivas, Hanumantha Rao Velagapuri

Publikováno v: Journal of the Serbian Chemical Society, Vol 82, Iss 4, Pp 357-366 (2017)

A new series of (E)-3-(3-(4-substituted phenyl)-1-phenyl-1H-pyrazol- 4-yl)-1-(2-hydroxy-4-((1-aryl-1H-1-2,3-triazol-4-yl)methoxy)phenyl)- prop-2-en-1-one derivatives was synthesized. The synthesis of the title compounds involved the 1,3-dipolar Cu(I)

Externí odkaz: https://doaj.org/article/13245a01339949cf870b73e25f28122e

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Akademický článek

Microwave assisted synthesis of substituted 4-chloro-8-methyl-2-(1,3-diphenyl-1H-pyrazol-4-yl)-1,5-dioxa-2H-phenanthren-6-ones and their antimicrobial activity

Autor: Ashok Dongamanti, Vanaja Reddy Bachi, Sarasija Mdderla, Lakshmi Vijaya B.

Publikováno v: Journal of the Serbian Chemical Society, Vol 82, Iss 2, Pp 117-125 (2017)

Due to the potential antimicrobial activity of pyranochromenones and pyrazolines moieties, hybrid compounds containing both, substituted 4-Chloro-8-methyl-2-(1,3-diphenyl- -1H-pyrazol-4-yl)-1,5-dioxa-2H-phenanthren-6-ones (4a-g), have been synthe

Externí odkaz: https://doaj.org/article/823152181f5e4d5b9c1f929a06f23184

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Akademický článek

Microwave assisted synthesis of 2-(2-(tetrazolo[1,5-a]quinolin-4-yl)-2,3-dihydro-1h-benzo[b][1,4]diazepin-4-yl) substituted phenols and evaluation of their antimicrobial activity

Autor: Ashok Dongamanti, Rao Velagapuri Hanumantha, Kavitha Rangu

Publikováno v: Journal of the Serbian Chemical Society, Vol 81, Iss 8, Pp 851-858 (2016)

A series of new benzodiazepines 4a-h have been synthesized by Michael addition of chalcones 3a-h with o-phenylenediamine (OPDA) in presence of sodium acetate under conventional heating and microwave irradiation. Structures of the newly synthesized

Externí odkaz: https://doaj.org/article/7fd357d3ed924529b050f5f5f4703b1f

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Akademický článek

Microwave assisted synthesis of some new coumarin-pyrazoline hybrids and their antimicrobial activity

Autor: Ashok Dongamanti, Lakshmi Bommidi Vijaya, Ravi Sidda, Ganesh Arram

Publikováno v: Journal of the Serbian Chemical Society, Vol 80, Iss 3, Pp 305-313 (2015)

A series of pyrazolines 4a-g have been synthesized by Michael addition of chalcones 3a-g with hydrazine hydrate in presence of sodium acetate under conventional heating and microwave irradiation. Structures of the newly synthesized chalcones 3a-g

Externí odkaz: https://doaj.org/article/996c5c0a62144fe8a72bf3bc05a56877

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Akademický článek

One-pot synthesis of carbazole based 3-hydroxy-4H-chromen-4-ones by modified Algar-Flynn-Oyamada reaction and their antimicrobial activity

Autor: Ashok Dongamanti, Ravi Sidda, Lakshmi Vijaya Bommidi, Ganesh Arram

Publikováno v: Journal of the Serbian Chemical Society, Vol 80, Iss 11, Pp 1361-1366 (2015)

A new series of 2-(9-ethyl-9H-carbazol-3-yl)-3-hydroxy-4Hchromen-4-ones have been synthesized from substituted 2-hydroxy acetophenones and 9-ethyl-9H-carbazole-3-carbaldehyde using NaOH and H2O2 by modified Algar-Flynn-Oyamada reaction. In this me

Externí odkaz: https://doaj.org/article/8134303e382f4f60bb45b61f27c877aa

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