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1
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KILIC A, ALSHHAB A, OKUMUS V. Preparation and spectroscopic properties of bioactive 1, 2, 3-triazole-linked boronate esters for use in antioxidant, antimicrobial, and DNA binding studies. J Organomet Chem 2023. [DOI: 10.1016/j.jorganchem.2023.122707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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2
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Dadaei M, Naeimi H. An Environment-Friendly Method for Green Synthesis of Pyranopyrazole Derivatives Catalyzed by CoCuFe 2O 4 Magnetic Nanocrystals under Solvent-Free Conditions. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2020.1725897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Mahla Dadaei
- Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I. R. Iran
| | - Hossein Naeimi
- Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I. R. Iran
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3
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Jayashree S, Shivashankar K. Sulfated Copper Oxide Catalyzed One-Pot Synthesis of N-Fused Benzimidazolo/Benzothiazolo Pyrimidines. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2019.1625065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
| | - Kalegowda Shivashankar
- P.G. Department of Chemistry, Central College Campus, Bangalore University, Bangalore, Karnataka, India
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4
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Darweesh AF, Salama SK, Abdelhamid IA, Elwahy AHM. Bis(aldehydes): Versatile precursors for novel
bis
(
14
H
‐dibenzo[
a
,
j
]xanthenes),
bis
(pyrano[3,2‐
c
:5,6‐
c
']dichromenedione), and
bis
(dihydrobenzo[
a
]xanthenones)
via
multicomponent reactions. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ahmed F. Darweesh
- Chemistry Department, Faculty of Science Cairo University Giza Egypt
| | - Soad K. Salama
- Chemistry Department, Faculty of Science Cairo University Giza Egypt
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5
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Imrankhan M, Shivashankar K. Iodine catalyzed one-pot four component synthesis of coumarinyl phosphoramidates via sequential addition of reactants. NEW J CHEM 2020. [DOI: 10.1039/d0nj04445h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
An unprecedented synthetic route for the preparation of a library of novel coumarinyl phosphoramidate derivatives via iodine catalysed one-pot four component reactions of ethyl 4-bromo-3-oxo-alkanoate, sodium azide, trialkyl phosphites, and phenols in ethanol is reported.
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Affiliation(s)
- Mohammed Imrankhan
- P. G. Department of Chemistry
- Central College Campus
- Bangalore University
- Bangalore
- India
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6
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Kilic A, Durgun M, Durap F, Aydemir M. The chiral boronate-catalyzed asymmetric transfer hydrogenation of various aromatic ketones to high-value alcohols: Preparation and spectroscopic studies. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.03.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Nadaf AN, Shivashankar K. Visible Light Assisted Hantzsch Reaction: Synthesis of Polycyclic Dihydropyridines. LETT ORG CHEM 2019. [DOI: 10.2174/1570178615666181107095151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The polycyclic dihydropyridine nucleus represents the heterocyclic system of invaluable
core motifs with wide applications in chemical, biological and physical properties. Although this kind
of compounds have been extensively synthesized by other groups, the synthesis of these compounds
under CFL light intensity were not explored. The synthesis of polycyclic dihydropyridine derivatives
were achieved through the reaction of 4-hydroxycoumarin, aromatic aldehydes and ammonium acetate
under CFL light irradiation conditions. A series of polycyclic dihydropyridine derivatives were prepared
under CFL light irradiation conditions with high yield, short reaction time, ambient condition and
without the use of catalyst. The results displayed an efficient method for the synthesis of polycyclic dihydropyridine
derivatives. Clean profile, short reaction time, low cost and use of CFL light intensity
instead of catalyst making it a genuinely green protocol.
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Affiliation(s)
- Ankusab Noorahmadsab Nadaf
- P.G. Department of Chemistry, Central College Campus, Bangalore University, Bangalore - 560 001, Karnataka, India
| | - Kalegowda Shivashankar
- P.G. Department of Chemistry, Central College Campus, Bangalore University, Bangalore - 560 001, Karnataka, India
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8
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Shamala D, Shivashankar K, Chandra, Mahendra M. Zinc chloride catalyzed multicomponent synthesis of pyrazolopyridocoumarin scaffolds. J CHEM SCI 2019. [DOI: 10.1007/s12039-019-1610-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Beerappa M, Shivashankar K. Synthesis of 4,6-diarylpyrimidin-2(1H)-one derivatives from benzyl halides and (1-bromoethyl)benzene under solvent-free conditions. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1479757] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Mallappa Beerappa
- Department of Chemistry, Central College Campus, Bangalore University, Bangalore, Karnataka, India
| | - Kalegowda Shivashankar
- Department of Chemistry, Central College Campus, Bangalore University, Bangalore, Karnataka, India
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10
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Jayashree S, Shivashankar K. Montmorillonite K-10 catalyzed Mannich reaction: Synthesis of aminonaphthoquinone derivatives from Lawsone. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1466334] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Kalegowda Shivashankar
- P.G. Department of Chemistry, Central College Campus, Bangalore University, Bangalore, Karnataka, India
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11
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Chacko P, Shivashankar K. Montmorillonite K10-catalyzed synthesis of N-fused imino-1,2,4-thiadiazolo isoquinoline derivatives. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1448419] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Priya Chacko
- P.G. Department of Chemistry, Bangalore University, Bangalore, Karnataka, India
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12
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Chacko P, Shivashankar K. I 2 -catalyzed one-pot synthesis of benzofuro/thieno[2,3- b ]pyrrole motifs. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.02.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Beerappa M, Shivashankar K. Four component synthesis of highly functionalized pyrano[2,3-c]pyrazoles from benzyl halides. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1386788] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Mallappa Beerappa
- Department of Chemistry, Bangalore University, Bangalore, Karnataka, India
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14
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Jagadishbabu N, Shivashankar K. One-Pot Synthesis of 2,4,5-Triphenyl Imidazoles from 1,2-Diols as Key Reagents. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201600746] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Narasashetty Jagadishbabu
- P. G. Department of Chemistry, Central College Campus; Bangalore University; Bangalore 560 001 India
| | - Kalegowda Shivashankar
- P. G. Department of Chemistry, Central College Campus; Bangalore University; Bangalore 560 001 India
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15
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Beerappa M, Shivashankar K. One-pot Three-component Synthesis of Furan-based Heterocycles from Benzyl Halides. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2806] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mallappa Beerappa
- PG Department of Chemistry, Central College Campus; Bangalore University; Bangalore 560 001 Karnataka India
| | - Kalegowda Shivashankar
- PG Department of Chemistry, Central College Campus; Bangalore University; Bangalore 560 001 Karnataka India
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16
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Shamala D, Shivashankar K. Synthesis of 4-phenyloxazinones via DBU-catalyzed cleavage of 4-bromomethylcoumarins. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1252045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Devadas Shamala
- P.G. Department of Chemistry, Central College Campus, Bangalore University, Bangalore, Karnataka, India
| | - Kalegowda Shivashankar
- P.G. Department of Chemistry, Central College Campus, Bangalore University, Bangalore, Karnataka, India
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17
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Jagadishbabu N, Shivashankar K. Pseudo Multicomponent Reaction: Synthesis of Fused Pyrano Biscoumarin Analogs from 1,2-diols. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2742] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Narasashetty Jagadishbabu
- P. G. Department of Chemistry, Central College Campus; Bangalore University; Bangalore 560 001 Karnataka India
| | - Kalegowda Shivashankar
- P. G. Department of Chemistry, Central College Campus; Bangalore University; Bangalore 560 001 Karnataka India
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