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Gorle S, V.N. CS, L. VR, K. RR, Akula R. Glucose as an eco-friendly reducing agent for a one-pot multicomponent synthesis of quinoxalines. SYNTHETIC COMMUN 2023. [DOI: 10.1080/00397911.2023.2176237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Affiliation(s)
- Simhachalam Gorle
- Technology Development Centre, APSL, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
- Department of Chemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
| | - Chandra Sekhar V.N.
- Technology Development Centre, APSL, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
- Department of Chemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
| | - Vaikunta Rao L.
- Department of Chemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
| | - Raghavendra Rao K.
- Technology Development Centre, APSL, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Raghunadh Akula
- Technology Development Centre, APSL, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
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2
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Jinkala R, Tadiparthi K, Raghunadh A, Shiva Kumar KB, Venkateshwarlu R, Siddaiah V, Ramamohan H. Iodine Mediated Oxidative Cross-Coupling of Benzo[ d]Imidazo[2,1- b]Thiazoles with Ethylbenzene: An Unprecedented Approach of C3-Dicarbonylation. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2083198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Rajesh Jinkala
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
- Department of Organic Chemistry and FDW, Andhra University, Visakhapatnam, India
| | | | - Akula Raghunadh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - K. B. Shiva Kumar
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Rapolu Venkateshwarlu
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Vidavalur Siddaiah
- Department of Organic Chemistry and FDW, Andhra University, Visakhapatnam, India
| | - Hindupur Ramamohan
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
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3
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Jinkala R, K. B. SK, Rapolu V, Satish P. N, Jammula SR, Vidavalur S, Hindupur R, Tadiparthi K, Raghunadh A. Iodine promoted synthesis of pyrido[2′,1′:2,3]imidazo[4,5-c]quinoline derivatives via oxidative decarboxylation of phenylacetic acid. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2021.2019278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Rajesh Jinkala
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
- Department of Organic Chemistry and FDW, Andhra University, Visakhapatnam, India
| | - Shiva Kumar K. B.
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Venkateshwarlu Rapolu
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Nikumbh Satish P.
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Subba Rao Jammula
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Siddaiah Vidavalur
- Department of Organic Chemistry and FDW, Andhra University, Visakhapatnam, India
| | - Ramamohan Hindupur
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | | | - Akula Raghunadh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
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Kommuri VC, Tadiparthi K, Pawar L, Arunachalampillai A. A Simple and Efficient Ligand-Free Copper-Catalyzed C-N Bond Formation of Aryl (Hetero) Halides and N-Heteroaryl Amines. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.2019802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | | | - Lokesh Pawar
- Department of Chemistry, CHRIST (Deemed to be University), Bangalore, India
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5
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Gorle S, L VR, Y C, A. V DR, Mekala R, Tadiparthi K, Raghunadh A. A simple and efficient synthesis of imidazoquinoxalines and spiroquinoxalinones via pictect-spengler reaction using Wang resin. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.2015783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Simhachalam Gorle
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
- Department of Chemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
| | - Vaikunta Rao L
- Department of Chemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
| | - Chiranjeevi Y
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Dhanunjaya Rao A. V
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Ramamohan Mekala
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | | | - Akula Raghunadh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
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6
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Gorle S, Lakinani VR, Yakkanti C, Rapolu V, Regati S, Tadiparthi K, Raghunadh A. A Simple and Efficient [( n-Bu 3Sn) 2MO 4] n Catalyzed Synthesis of Quinazolinones and Dihydroquinazolinones. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1986730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Simhachalam Gorle
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
- Department of Chemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
| | | | - Chiranjeevi Yakkanti
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Venkateshwarlu Rapolu
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Sridhar Regati
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | | | - Akula Raghunadh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
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7
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Krishnaji T, Murthy VN, Raghunadh A, Rao LV. Simple and Efficient Amberlite 15-catalyzed Synthesis of Dihydroquinazolinones. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1070428020080199] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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8
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Jaganmohan C, K. P. VK, R. V, Mohanty S, Kumar J, B. VR, Raghunadh A, Tadiparthi K. A novel approach for the synthesis of functionalized hydroxylamino derivative of dihydroquinazolinones. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1768406] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Chikkanti Jaganmohan
- Dr. Reddy’s Laboratories Limited, Hyderabad, India
- Department of Organic Chemistry and FDW, Andhra University, Visakhapatnam, India
| | | | | | | | | | - Venkateswara Rao B.
- Department of Organic Chemistry and FDW, Andhra University, Visakhapatnam, India
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Venkateshwarlu R, Murthy VN, Tadiparthi K, Nikumbh SP, Jinkala R, Siddaiah V, Madhu Babu MV, Rama Mohan H, Raghunadh A. Base mediated spirocyclization of quinazoline: one-step synthesis of spiro-isoindolinone dihydroquinazolinones. RSC Adv 2020; 10:9486-9491. [PMID: 35497232 PMCID: PMC9050170 DOI: 10.1039/c9ra09567e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 02/19/2020] [Indexed: 11/21/2022] Open
Abstract
A novel approach for the spiro-isoindolinone dihydroquinazolinones has been demonstrated from 2-aminobenzamide and 2-cyanomethyl benzoate in the presence of KHMDS as a base to get moderate yields. The reaction has been screened in various bases followed by solvents and a gram scale reaction has also been executed under the given conditions. Based on the controlled experiments a plausible reaction mechanism has been proposed. Further the substrate scope of this reaction has also been studied. A novel approach for the spiro-isoindolinone dihydroquinazolinones has been demonstrated from 2-aminobenzamide and 2-cyanomethyl benzoate in the presence of KHMDS as a base to get moderate yields.![]()
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Affiliation(s)
- Rapolu Venkateshwarlu
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India.,Department of Organic Chemistry and FDW, Andhra University Visakhapatnam 530045 India
| | - V Narayana Murthy
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India
| | - Krishnaji Tadiparthi
- Department of Chemistry, CHRIST (Deemed to be University) Hosur Road Bengaluru 560029 India
| | - Satish P Nikumbh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India
| | - Rajesh Jinkala
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India
| | - Vidavalur Siddaiah
- Department of Organic Chemistry and FDW, Andhra University Visakhapatnam 530045 India
| | - M V Madhu Babu
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India
| | - Hindupur Rama Mohan
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India
| | - Akula Raghunadh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India
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Almarhoon Z, Dahlous KA, Abd Alhameed R, Ghabbour HA, El-Faham A. A Simple, Efficient, and Eco-Friendly Method for the Preparation of 3-Substituted-2,3-dihydroquinazolin-4(1 H)-one Derivatives. Molecules 2019; 24:E4052. [PMID: 31717480 PMCID: PMC6891463 DOI: 10.3390/molecules24224052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/08/2019] [Accepted: 11/08/2019] [Indexed: 11/16/2022] Open
Abstract
A simple, cost-effective method under environmentally benign conditions is a very important concept for the preparation of 2,3-dihydroquinazolin-4(1H)-one derivatives. The present work describes an efficient and eco-friendly protocol for the synthesis of 2-amino-N-(2-substituted-ethyl)benzamide and 3-substituted-2,3-dihydroquinazolin-4(1H)-one derivatives. The novel feature of this protocol is the use of 2-methyl tetrahydrofuran (2-MeTHF) as an eco-friendly alternative solvent to tetrahydrofuran (THF) in the first step. In the second step, methanol in the presence of potassium carbonate as a catalyst was used under conventional heating or microwave irradiation, which provided an eco-friendly method to afford the target products in excellent yields and purities. NMR (1H and 13C), elemental analysis, and LC-MS confirmed the structures of all compounds. X-ray crystallography further confirmed the structure of the intermediate 2-amino-N-(2-substituted-ethyl)benzamide 3a. The molecular structure of 3a was monoclinic crystal, with P21/c, a = 13.6879 (11) Å, b = 10.2118 (9) Å, c = 9.7884 (9) Å, β = 105.068 (7)°, V = 1321.2 (2) Å3, and Z = 4.
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Affiliation(s)
- Zainab Almarhoon
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (Z.A.); (K.A.D.); (R.A.A.)
| | - Kholood A. Dahlous
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (Z.A.); (K.A.D.); (R.A.A.)
| | - Rakia Abd Alhameed
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (Z.A.); (K.A.D.); (R.A.A.)
| | - Hazem A. Ghabbour
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt;
| | - Ayman El-Faham
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (Z.A.); (K.A.D.); (R.A.A.)
- Chemistry Department, Faculty of Science, Alexandria University, P.O. Box 426, Ibrahimia, Alexandria 12321, Egypt
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11
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Ganesh KR, Murthy VN, Rao KR, Rao MB, Murthy C, Raghunadh A. Microwave Assisted Solvent Free One Pot Synthesis of N-acetyl-bis-indoles. LETT ORG CHEM 2019. [DOI: 10.2174/1570178615666180912115007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The synthesis of various N-acetyl-bis-indole compounds has been achieved by one pot reaction of indole and acid chloride in the presence of silica sulfuric acid as a catalyst under microwave irradiation to moderate yields. The reaction has also been studied with different acid chlorides and solvents.
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Affiliation(s)
- K. Ravi Ganesh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Miyapur, Hyderabad 500049, India
| | - V. Narayana Murthy
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Miyapur, Hyderabad 500049, India
| | - K. Raghavendra Rao
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Miyapur, Hyderabad 500049, India
| | - M.V. Basaveswara Rao
- Department of Chemistry, Krishna University, Machilipatnam 521001, Andhra Pradesh, India
| | - C. Murthy
- Division of Chemistry, Department of Sciences and Humanities, Vignan's Foundation for Science, Technology and Research (Deemed to be University), Vadlamudi, Guntur 522 213, Andhra Pradesh, India
| | - A. Raghunadh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Miyapur, Hyderabad 500049, India
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Murthy VN, Nikumbh SP, Tadiparthi K, Madhubabu MV, Jammula SR, Rao LV, Raghunadh A. Amberlite-15 promoted an unprecedented aza Michael rearrangement for one pot synthesis of dihydroquinazolinone compounds. RSC Adv 2018; 8:22331-22334. [PMID: 35558548 PMCID: PMC9092434 DOI: 10.1039/c8ra03308k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 05/24/2018] [Indexed: 02/01/2023] Open
Abstract
A new one pot multicomponent annulation strategy for the synthesis of various dihydroquinazolinone compounds has been developed using Amberlite-15 as a catalyst, giving good to moderate yields. In this reaction the substrate scope for amines and aldehydes was also investigated. The reaction has been checked on a large scale and the possible reaction mechanism has also been proposed.
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Affiliation(s)
- V Narayana Murthy
- Technology Development Centre, Custom Pharmaceutical Services, Dr Reddy's Laboratories Ltd Hyderabad 500049 India .,Department of Chemistry, GIS, Gitam University Visakhapatnam 530045 India
| | - Satish P Nikumbh
- Technology Development Centre, Custom Pharmaceutical Services, Dr Reddy's Laboratories Ltd Hyderabad 500049 India
| | | | - M V Madhubabu
- Technology Development Centre, Custom Pharmaceutical Services, Dr Reddy's Laboratories Ltd Hyderabad 500049 India
| | - Subba Rao Jammula
- Technology Development Centre, Custom Pharmaceutical Services, Dr Reddy's Laboratories Ltd Hyderabad 500049 India
| | - L Vaikunta Rao
- Department of Chemistry, GIS, Gitam University Visakhapatnam 530045 India
| | - Akula Raghunadh
- Technology Development Centre, Custom Pharmaceutical Services, Dr Reddy's Laboratories Ltd Hyderabad 500049 India
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