Výsledky vyhledávání - "Velu Sadhasivam"

Copper nanoparticles supported on highly nitrogen-rich covalent organic polymers as heterogeneous catalysts for the ipso-hydroxylation of phenyl boronic acid to phenol

Autor: Ayyanar Siva, Velu Sadhasivam, Sepperumal Murugesan, Muniyasamy Harikrishnan, Ganesan Elamathi, Rajendran Balasaravanan

Publikováno v: New Journal of Chemistry. 44:6222-6231

This work describes a simple procedure for the synthesis of highly nitrogen-rich covalent organic polymers using commercially available starting materials like melamine and cyanuric chloride as a solid heterogeneous catalyst Cu/TCOP under solvotherma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f9746d4fd6861d53d47df68baebe3c4a
https://doi.org/10.1039/c9nj05759e

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Cu(OAc)2 entrapped on ethylene glycol-modified melamine–formaldehyde polymer as an efficient heterogeneous catalyst for Suzuki–Miyaura coupling reactions

Autor: Ganesan Elamathi, Velu Sadhasivam, Ayyanar Siva, Mathappan Mariyappan, Balakrishnan Sankar

Publikováno v: Research on Chemical Intermediates. 46:681-700

This work is described as an environmental friendly approach for Cu(OAc)2 entrapped on ethylene glycol-modified melamine–formaldehyde-based polymeric material (Cu@MCOP) which has been successfully synthesized by simple approaches using commercially

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::40dbb30d2576134e344ba80833f8be86
https://doi.org/10.1007/s11164-019-03984-0

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A simple triazine (D-A) based organic fluorophore selective dual sensor for Copper(II) and dichromate ions and its solvatochromism, solid state sensing, logic gate applications

Autor: Mathappan Mariyappan, Nelson Malini, Muniyasamy Harikrishnan, Velu Sadhasivam, Sepperumal Murugesan, Ayyanar Siva

Publikováno v: Dyes and Pigments. 168:123-133

Herein, the design and synthesis of triazine based fluorophore for selective dual sensing of copper(II) and dichromate ions in non-aqueous solution has been reported. The triazine based fluorophore (TZAS) was synthesized in very good yield from inexp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0df27cd3df3eaedbbc0b2d5f74b47d75
https://doi.org/10.1016/j.dyepig.2019.04.041

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Catalytic hydrogenation of aldehydes and ketones using cinchona–bipyridyl-based palladium catalyst

Autor: Mathappan Mariyappan, Velu Sadhasivam, Ayyanar Siva, Ramasamy R. Chidambaram

Publikováno v: Journal of the Iranian Chemical Society. 16:373-384

Understanding the need for simple, robust and low effluents, in chemical processes, we have developed an elegant protocol for the catalytic reduction of aldehydes and ketones to corresponding alcohols which are used in synthetic fragrance application

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::43f06c7f181ce95cc1f5d90ec22e80ff
https://doi.org/10.1007/s13738-018-1513-x

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Aldoxime based biphenyl-azo derivative for self-assembly, chemosensor (Hg2+/F−) and bioimaging studies

Autor: Velu Sadhasivam, Ayyanar Siva, Jayaraman Sivamani

Publikováno v: Sensors and Actuators B: Chemical. 246:108-117

A versatile bifunctional biphenyl-azo conjugated based aldoxime (DOXPA) was developed and its photo-responsive behaviours upon the addition of analytes has been investigated using UV–vis absorption, fluorescence emission, quantum yield and fluoresc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::29cac51ba55a62a166d1608892f26135
https://doi.org/10.1016/j.snb.2017.02.068

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Incorporating Pd(OAc)2on Imine Functionalized Microporous Covalent Organic Frameworks: A Stable and Efficient Heterogeneous Catalyst for Suzuki-Miyaura Coupling in Aqueous Medium

Autor: Velu Sadhasivam, Rajendiran Balasaravanan, Ayyanar Siva, Chinnadurai Chithiraikumar

Publikováno v: ChemistrySelect. 2:1063-1070

Imine-based microporous covalent organic frameworks, TATAE were synthesized from condensation of 4,4′,4“-(1,3,5-triazine-2,4,6-triyl)tribenzaldehyde and 1,4-diaminobenzene, followed by Pd(OAc)2 was incorporated on TATAE (Pd/TATAE). The as-synthes

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e64348e0de628ea6357edbf3a0201f5e
https://doi.org/10.1002/slct.201601440

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Enantioselective synthesis of dihydroquinazolinone derivatives catalyzed by a chiral organocatalyst

Autor: Veeramanoharan Ashokkumar, Siva Ayyanar, Sankar Balakrishnan, Ponmuthu Kottala Vijaya, Sepperumal Murugesan, Velu Sadhasivam, Chithiraikumar Chinnadurai, Madhappan Mariyappan

Publikováno v: New Journal of Chemistry. 41:7980-7986

The asymmetric condensation/amine addition cascade sequence of 2-aminobenzamide and aldehydes, catalyzed by a novel chiral organocatalyst, was realized. The organocatalyst was found to be very effective and highly enantioselective for such cascade re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aaaab7f7af6cf8776fbb9df45d39d119
https://doi.org/10.1039/c7nj00538e

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