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Bhaskaran S, Padusha MSA, Sajith AM. Application of Palladium Based Precatalytic Systems in the Suzuki‐Miyaura Cross‐Coupling Reactions of Chloro‐ Heterocycles. ChemistrySelect 2020. [DOI: 10.1002/slct.202002357] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Savitha Bhaskaran
- Postgraduate and Research Department of ChemistryJamal Mohamed College, Bharathidasan University Tiruchirappalli India
| | - M. Syed Ali Padusha
- Postgraduate and Research Department of ChemistryJamal Mohamed College, Bharathidasan University Tiruchirappalli India
| | - Ayyiliath M Sajith
- Ortin laboratories Pvt. Ltd, Malkapur VillageChoutuppal Mandal, Hyderabad Telangana India- 508252
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A highly efficient precatalytic system (XPhos-PdG2) for the Suzuki–Miyaura cross-coupling of 7-chloro-1H-pyrrolo[2,3-c]pyridine employing low catalyst loading. Mol Divers 2019; 23:697-707. [DOI: 10.1007/s11030-018-9904-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 12/05/2018] [Indexed: 12/13/2022]
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Savitha B, Koti Reddy E, Parthasarathi D, Pakkath R, Sajith AM, Ananda kumar CS, Haridas KR, Syed Ali Padusha M. A Highly Efficient Catalyst for the Suzuki-Miyaura Cross-Coupling Reaction of 5-(5-chloropyridin-3-yl)-3-methyl-1,3,4-oxadiazol-2(3H
)-one. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3280] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Bhaskaran Savitha
- Postgraduate and Research Department of Chemistry, Jamal Mohamed College; Bharathidasan University; Tiruchirappalli Tamil Nadu 620020 India
| | - Eeda Koti Reddy
- Department of Chemistry; Vignan's Foundation for Science, Technology and Research - VFSTR (Deemed to be University); Vadlamudi Guntur Andhra Pradesh 522 213 India
| | - D. Parthasarathi
- Postgraduate and Research Department of Chemistry, Jamal Mohamed College; Bharathidasan University; Tiruchirappalli Tamil Nadu 620020 India
| | - Rajeesh Pakkath
- School of Chemical Sciences; Kannur University; Payyanur Campus, Edat P.O Kannur Kerala 670327 India
| | - Ayyiliath M. Sajith
- Postgraduate and Research Department of Chemistry, Kasaragod Government College; Kannur University; Kasaragod Kerala 671123 India
| | - C. S. Ananda kumar
- Department of Nanotechnology; Visvesvaraya Technological University; CPGS Muddenahalli 562 101 India
- Centre for Material Science; University of Mysore, Manasagangotri; Mysuru Karnataka 570 006 India
| | - Karickal R. Haridas
- School of Chemical Sciences; Kannur University; Payyanur Campus, Edat P.O Kannur Kerala 670327 India
| | - M. Syed Ali Padusha
- Postgraduate and Research Department of Chemistry, Jamal Mohamed College; Bharathidasan University; Tiruchirappalli Tamil Nadu 620020 India
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Gangarapu NR, Reddy E, Sajith AM, Yellappa S, Chandrasekhar KB. NMI/MsCl-Mediated Amide Bond Formation of Aminopyrazines and Aryl/Heteroaryl Carboxylic Acids: Synthesis of Biologically Relevant Pyrazine Carboxamides. ChemistrySelect 2017. [DOI: 10.1002/slct.201700801] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Nagaraja Reddy Gangarapu
- Department of Pharmaceutical Chemistry; JNTUA-Oil Technological Research Institute, Ananthapuram, A.P
- Department of Chemistry; Government Science College; Bengaluru, Karnataka
| | - Eeda Koti Reddy
- Division of Chemistry; Department of Science and Humanities; Vignan‘s Foundation for Science; Technology and Research University-VFSTRU (Vignan University); Vadlamudi, Guntur 522 213, Andhra pradesh India
| | - Ayyiliath M Sajith
- Postgraduate and Research Department of Chemistry; Kasaragod Government College; Kannur University; Kasaragod, Kerala 671123 India
| | - Shivaraj Yellappa
- Department of Chemistry; Government Science College; Bengaluru, Karnataka
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Ningegowda R, Bhaskaran S, Sajith AM, Aswathanarayanappa C, Padusha MSA, Shivananju NS, Priya BS. Mo(CO)6 as a Solid CO Source in the Synthesis of Aryl/Heteroaryl Weinreb Amides under Microwave-Enhanced Condition. Aust J Chem 2017. [DOI: 10.1071/ch16213] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The facile transformation of aryl/heteroaryl nonaflates into corresponding amides via Pd-catalyzed aminocarbonylation using Mo(CO)6 as a solid CO source under microwave-enhanced condition is reported. The method was found to be tolerant with respect to a diverse range of electronically biased aryl/heteroaryl nonaflates, and exceptional yields were obtained. The optimized protocol was further extended to a diverse range of amines.
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Avinesh MP, Jaison MTJ, Sajith AM, Nagaswarupa HP, Muralidharan A. Facile Synthesis of Fully Decorated Imidazo[4,5-b] and Imidazo[4,5-c] Pyridines in Aqueous DMF via C-H Activation under Microwave Irradiation. ChemistrySelect 2016. [DOI: 10.1002/slct.201600374] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Mr. P. Avinesh
- Research and development centre; Bharathiyar University; Coimbatore
- Research Centre; Department of Chemistry; East West Institute of Technology; Bangalore India
| | - Mr. Thadathil. J. Jaison
- Research and development centre; Bharathiyar University; Coimbatore
- Research Centre; Department of Chemistry; East West Institute of Technology; Bangalore India
| | - Ayyiliath. M. Sajith
- Department of Chemistry; Nehru Arts and Science College; Kannur University; Kannur India
- Post Graduate and Research Department of Chemistry; Government College Kasargod; Kannur University; Kannur India
| | - H. P. Nagaswarupa
- Research and development centre; Bharathiyar University; Coimbatore
- Research Centre; Department of Chemistry; East West Institute of Technology; Bangalore India
| | - A. Muralidharan
- Post Graduate and Research Department of Chemistry; Government College Kasargod; Kannur University; Kannur India
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Savitha B, Sajith AM, Joy MN, Khader KA, Muralidharan A, Padusha MSA, Bodke YD. Palladium-Catalyzed Suzuki Cross-Coupling of 2-Halo-Deazapurines with Potassium Organotrifluoroborate Salts in the Regioselective Synthesis of Imidazo[4,5-b]pyridine Analogues. Aust J Chem 2016. [DOI: 10.1071/ch15420] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In this paper, we report the use of potassium organotrifluoroborate salts as nucleophilic organoboron reagents in the Suzuki cross-coupling reactions of 2-halo deazapurines. Regio-isomeric C-2-substituted imidazo[4,5-b]pyridine analogues were synthesized by employing this protocol in good to excellent yields. Whereas aryl and heteroaryl trifluoroborates reacted readily to give the coupled products in high yields, alkyltrifluoroborates were found to be less reactive. The utilization of tetrabutylammonium acetate was found to play a substantial role in enhancing the reaction rates of the cross-coupling process. Also, a comparative study was performed between boronic acids and potassium organotrifluoroborate salts.
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Veena Vani K, Ramesh G, Venkata Rao C. Synthesis, Spectral Characterization, and Antimicrobial Activity of Novel 2,4,6-Trisubstituted Quinazoline Derivatives by Buchwald and Suzuki Coupling Reactions. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kotla Veena Vani
- Department of Chemistry; Sri Venkateswara University; Tirupati 517502 Andhra Pradesh India
| | - Garlapati Ramesh
- Department of Chemistry; Sri Venkateswara University; Tirupati 517502 Andhra Pradesh India
| | - Chunduri Venkata Rao
- Department of Chemistry; Sri Venkateswara University; Tirupati 517502 Andhra Pradesh India
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Sajith AM, Abdul Khader KK, Muralidharan A, Ali Padusha MS, Nagaswarupa HP. A Highly Efficient Catalyst for the Suzuki Cross-coupling Reaction of 3-Chloro-5-oxadiazol-2-yl Pyridine. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2277] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- A. M. Sajith
- Post Graduate and Research Department of Chemistry, Kasargod Govt. College; Kannur University; Kasargod India
| | - K. K. Abdul Khader
- Post Graduate and Research Department of Chemistry, Jamal Mohamed College; Bharathidasan University; Tiruchirapalli India
| | - A. Muralidharan
- Post Graduate and Research Department of Chemistry, Kasargod Govt. College; Kannur University; Kasargod India
- Department of Chemistry, Nehru Arts and Science College; Kannur University; Kannur India
| | - M. S. Ali Padusha
- Post Graduate and Research Department of Chemistry, Jamal Mohamed College; Bharathidasan University; Tiruchirapalli India
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Abdul Khader K, Sajith AM, Ali Padusha MS, Nagaswarupa H, Muralidharan A. Regioselective synthesis of C-2 substituted imidazo[4,5-b]pyridines utilizing palladium catalysed C–N bond forming reactions with enolizable heterocycles. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.114] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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