Výsledky vyhledávání - "Vinayagam Pavunkumar"

Akademický článek

The crystal structures determination and Hirshfeld surface analysis of N-(4-bromo-3-methoxyphenyl)- and N-{[3-bromo-1-(phenylsulfonyl)-1H-indol-2-yl]methyl}- derivatives of N-{[3-bromo-1-(phenylsulfonyl)-1H-indol-2-yl]methyl}benzenesulfonamide

Autor: S. Madhan, M. NizamMohideen, Vinayagam Pavunkumar, Arasambattu K. MohanaKrishnan

Publikováno v: Acta Crystallographica Section E: Crystallographic Communications, Vol 80, Iss 11, Pp 1110-1117 (2024)

Two new phenylsulfonylindole derivatives, namely, N-{[3-bromo-1-(phenylsulfonyl)-1H-indol-2-yl]methyl}-N-(4-bromo-3-methoxyphenyl)benzenesulfonamide, C28H22Br2N2O5S2, (I), and N,N-bis{[3-bromo-1-(phenylsulfonyl)-1H-indol-2-yl]methyl}benzenesulfonamid

Externí odkaz: https://doaj.org/article/ce79e0ffafbf435680b774b73186739b

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Akademický článek

Crystal structure determination and Hirshfeld surface analysis of N-acetyl-N-3-methoxyphenyl and N-(2,5-dimethoxyphenyl)-N-phenylsulfonyl derivatives of N-[1-(phenylsulfonyl)-1H-indol-2-yl]methanamine

Autor: S. Madhan, M. NizamMohideen, Vinayagam Pavunkumar, Arasambattu K. MohanaKrishnan

Publikováno v: Acta Crystallographica Section E: Crystallographic Communications, Vol 80, Iss 8, Pp 845-851 (2024)

Two new [1-(phenylsulfonyl)-1H-indol-2-yl]methanamine derivatives, namely, N-(3-methoxyphenyl)-N-{[1-(phenylsulfonyl)-1H-indol-2-yl]methyl}acetamide, C24H22N2O4S, (I), and N-(2,5-dimethoxyphenyl)-N-{[1-(phenylsulfonyl)-1H-indol-2-yl]methyl}benzenesul

Externí odkaz: https://doaj.org/article/5d7524dcddeb41faae24527aba62c8f2

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Akademický článek

Crystal-structure determination and Hirshfeld surface analysis of two new thiophene derivatives: (E)-N-{2-[2-(benzo[b]thiophen-2-yl)ethenyl]-5-fluorophenyl}benzenesulfonamide and (E)-N-{2-[2-(benzo[b]thiophen-2-yl)ethenyl]-5-fluorophenyl}-N-(but-2-yn-1-yl)benzenesulfonamide

Autor: S. Madhan, M. NizamMohideen, Vinayagam Pavunkumar, Arasambattu K. MohanaKrishnan

Publikováno v: Acta Crystallographica Section E: Crystallographic Communications, Vol 79, Iss 8, Pp 741-746 (2023)

In the title compounds, C22H16FNO2S2 (I) and C26H20FNO2S2 (II), the benzothiophene rings are essentially planar with maximum deviations of 0.009 (1) and 0.001 (1) Å for the carbon and sulfur atom in compounds I and II, respectively. In I, the thioph

Externí odkaz: https://doaj.org/article/bf7c907817b44440b582ceecfbf28bd2

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Akademický článek

The synthesis, crystal structure and Hirshfeld surface analysis of the thiophene derivatives 5-(phenylsulfonyl)-5,6-dihydrobenzo[4,5]thieno[3,2-j]phenanthridine and (E)-N-{2-[2-(benzo[b]thiophen-2-yl)ethenyl]phenyl}-N-(prop-2-yn-1-yl)benzenesulfonamide

Autor: S. Madhan, M. NizamMohideen, Vinayagam Pavunkumar, Arasambattu K. MohanaKrishnan

Publikováno v: Acta Crystallographica Section E: Crystallographic Communications, Vol 79, Iss 6, Pp 521-525 (2023)

In both of the title compounds, C26H19NO2S2, (I), and C25H19NO2S2, (II), the benzothiophene rings are essentially planar with maximum deviations of 0.026 (1) and −0.016 (1) Å for the carbon and sulfur atoms in compounds (I) and (II), respectively.

Externí odkaz: https://doaj.org/article/2db7913db87341279262dba24b775b83

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Akademický článek

Crystal structure and Hirshfeld surface analysis of (E)-N-(2-styrylphenyl)benzenesulfonamide.

Autor: A. M., Dharani Albert, Nagaraj, Achyuta, Somarathinam, Kanagasabai, Vinayagam, Pavunkumar, K., Mohanakrishnan Arasambattu, Kothandana, Gugan

Publikováno v: Acta Crystallographica Section E: Crystallographic Communications; Oct2024, Vol. 80 Issue 10, p1034-1038, 10p

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Crystal structures of two new carbazole derivatives: ethyl 9-(benzenesulfonyl)-2-(4-fluoro-2-nitrophenyl)-6-methoxy-9H-carbazole-3-carboxylate and 12-(benzenesulfonyl)-12H-quinolino[4,3-b]carbazole

Autor: S. Madhan, M. NizamMohideen, Vinayagam Pavunkumar, Arasambattu K. MohanaKrishnan

Publikováno v: Acta Crystallographica Section E Crystallographic Communications. 78:1198-1203

The title compounds, C28H21FN2O7S (I) and C25H16N2O2S (II), are carbazole derivatives with a benzenesulfonyl group attached to the carbazole moiety at the N atom on both molecules. A fluoro-substituted nitrophenyl ring system in I and a fused isoquin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::183ef4567a628bd2eae17c11278b9694
https://doi.org/10.1107/s2056989022010684

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A Formal (4 + 2) Cycloaddition of Phosphorus Ylides: Synthesis of Aromatic and Heteroaromatic 1,2-Diesters and Diones

Autor: Palani Manikandan, Rudrasenan Agneswaran, Vinayagam Pavunkumar, Arasambattu K. Mohanakrishnan

Publikováno v: Organic Letters. 24:4502-4506

Heteroarylmethylenephosphorus ylides underwent Michael addition with alkynediones and alkynediesters, followed by intramolecular cyclization and elimination of triphenylphosphine oxide to afford 1,2-diaroylbenzenes and 1,2-alkoxycarbonylcarbo- and he

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42ca9c38dcdd62da0bc4c2e51b510d07
https://doi.org/10.1021/acs.orglett.2c01234

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Pd(0)-Catalyzed Intramolecular Heck reaction of 2/3-Aryl(amino)methyl-3/2-bromoindoles: Syntheses of 3,4-Benzo[c]-β-carbolines, Benzo[4,5]isothiazolo[2,3-a]indole 5,5-Dioxides, and 1,2-Benzo[a]-γ-carbolines

Autor: Velu Saravanan, Potharaju Raju, Arasambattu K. Mohanakrishnan, Vinayagam Pavunkumar

Publikováno v: The Journal of Organic Chemistry. 86:1925-1937

One-pot synthesis of 3,4-benzo[c]-β-carbolines was achieved from 2-aryl(tosylamino)methyl-3-bromoindoles via 10 mol % Pd(OAc)2/PPh3-mediated intramolecular Heck coupling using K2CO3 as a base in DMF at 110 °C with concomitant aromatization through

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::acb209e7aa6864922fe2575cea765a9a
https://doi.org/10.1021/acs.joc.0c02152

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