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Martín CDMG, García JIH, Bonardd S, Díaz DD. Lignin-Based Catalysts for C-C Bond-Forming Reactions. Molecules 2023; 28:molecules28083513. [PMID: 37110747 PMCID: PMC10141373 DOI: 10.3390/molecules28083513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/01/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
Carbon-carbon (C-C) bond formation is the key reaction in organic synthesis to construct the carbon framework of organic molecules. The continuous shift of science and technology toward eco-friendly and sustainable resources and processes has stimulated the development of catalytic processes for C-C bond formation based on the use of renewable resources. In this context, and among other biopolymer-based materials, lignin has attracted scientific attention in the field of catalysis during the last decade, either through its acid form or as a support for metal ions and metal nanoparticles that drive the catalytic activity. Its heterogeneous nature, as well as its facile preparation and low cost, provide competitive advantages over other homogeneous catalysts. In this review, we have summarized a variety of C-C formation reactions, such as condensations, Michael additions of indoles, and Pd-mediated cross-coupling reactions that were successfully carried out in the presence of lignin-based catalysts. These examples also involve the successful recovery and reuse of the catalyst after the reaction.
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Affiliation(s)
- Cristina Del Mar García Martín
- Instituto de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
| | - José Ignacio Hernández García
- Instituto de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
- Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Spain
| | - Sebastián Bonardd
- Instituto de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
- Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Spain
| | - David Díaz Díaz
- Instituto de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
- Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Spain
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2
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Sulfamic acid promoted expeditious and column chromatography free synthesis of functionalized spiro [indoline-3, 7′-pyrano [3, 2-c: 5, 6-c'] dichromene]-2, 6′, 8′-trione derivatives under reflux conditions. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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3
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Nayek N, Karmakar P, Mandal M, Karmakar I, Brahmachari G. Photochemical and electrochemical regioselective cross-dehydrogenative C(sp 2)–H sulfenylation and selenylation of substituted benzo[ a]phenazin-5-ols. NEW J CHEM 2022. [DOI: 10.1039/d2nj02224a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The essence of photo- and electrochemistry: sulfenylation and selenylation of substituted benzo[a]phenazin-5-ols through cross-dehydrogenative C(sp2)–H functionalization.
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Affiliation(s)
- Nayana Nayek
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (a Central University), Santiniketan-731 235, West Bengal, India
| | - Pintu Karmakar
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (a Central University), Santiniketan-731 235, West Bengal, India
| | - Mullicka Mandal
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (a Central University), Santiniketan-731 235, West Bengal, India
| | - Indrajit Karmakar
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (a Central University), Santiniketan-731 235, West Bengal, India
| | - Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (a Central University), Santiniketan-731 235, West Bengal, India
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Park WS, Koo KA, Bae JY, Kim HJ, Kang DM, Kwon JM, Paek SM, Lee MK, Kim CY, Ahn MJ. Dibenzocyclooctadiene Lignans in Plant Parts and Fermented Beverages of Schisandra chinensis. PLANTS 2021; 10:plants10020361. [PMID: 33668581 PMCID: PMC7918357 DOI: 10.3390/plants10020361] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 12/18/2022]
Abstract
The fruit of Schisandra chinensis, Omija, is a well-known traditional medicine used as an anti-tussive and anti-diarrhea agent, with various biological activities derived from the dibenzocyclooctadiene-type lignans. A high-pressure liquid chromatography-diode array detector (HPLC-DAD) method was used to determine seven lignans (schisandrol A and B, tigloylgomisin H, angeloylgomisin H, schisandrin A, B, and C) in the different plant parts and beverages of the fruit of S. chinensis grown in Korea. The contents of these lignans in the plant parts descended in the following order: seeds, flowers, leaves, pulp, and stems. The total lignan content in Omija beverages fermented with white sugar for 12 months increased by 2.6-fold. Omija was fermented for 12 months with white sugar, brown sugar, and oligosaccharide/white sugar (1:1, w/w). The total lignan content in Omija fermented with oligosaccharide/white sugar was approximately 1.2- and 1.7-fold higher than those fermented with white sugar and brown sugar, respectively. A drink prepared by immersion of the fruit in alcohol had a higher total lignan content than these fermented beverages. This is the first report documenting the quantitative changes in dibenzocyclooctadiene-type lignans over a fermentation period and the effects of the fermentable sugars on this eco-friendly fermentation process.
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Affiliation(s)
- Woo Sung Park
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Korea; (W.S.P.); (K.A.K.); (H.-J.K.); (D.-M.K.); (J.-M.K.); (S.-M.P.)
| | - Kyung Ah Koo
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Korea; (W.S.P.); (K.A.K.); (H.-J.K.); (D.-M.K.); (J.-M.K.); (S.-M.P.)
| | - Ji-Yeong Bae
- College of Pharmacy, Jeju National University, Jeju 63243, Korea;
- Interdisciplinary Graduate Program in Advanced Convergence Technology & Science, Jeju National University, Jeju 63243, Korea
| | - Hye-Jin Kim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Korea; (W.S.P.); (K.A.K.); (H.-J.K.); (D.-M.K.); (J.-M.K.); (S.-M.P.)
| | - Dong-Min Kang
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Korea; (W.S.P.); (K.A.K.); (H.-J.K.); (D.-M.K.); (J.-M.K.); (S.-M.P.)
| | - Ji-Min Kwon
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Korea; (W.S.P.); (K.A.K.); (H.-J.K.); (D.-M.K.); (J.-M.K.); (S.-M.P.)
| | - Seung-Mann Paek
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Korea; (W.S.P.); (K.A.K.); (H.-J.K.); (D.-M.K.); (J.-M.K.); (S.-M.P.)
| | - Mi Kyeong Lee
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea;
| | - Chul Young Kim
- College of Pharmacy, Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan 15588, Korea
- Correspondence: (C.Y.K.); (M.-J.A.); Tel.: +82-31-400-5809 (C.Y.K.); +82-55-772-2425 (M.-J.A.)
| | - Mi-Jeong Ahn
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Korea; (W.S.P.); (K.A.K.); (H.-J.K.); (D.-M.K.); (J.-M.K.); (S.-M.P.)
- Correspondence: (C.Y.K.); (M.-J.A.); Tel.: +82-31-400-5809 (C.Y.K.); +82-55-772-2425 (M.-J.A.)
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5
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Ahmad MS, Nishina Y. Graphene-based carbocatalysts for carbon-carbon bond formation. NANOSCALE 2020; 12:12210-12227. [PMID: 32510079 DOI: 10.1039/d0nr02984j] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Organic transformations are usually catalyzed by metal-based catalysts. In contrast, metal-free catalysts have attracted considerable attention from the viewpoint of sustainability and safety. Among the studies in metal-free catalysis, graphene-based materials have been introduced in the reactions that are usually catalyzed by transition metal catalysts. This review covers the literature (up to the beginning of April 2020) on the use of graphene and its derivatives as carbocatalysts for C-C bond-forming reactions, which are one of the fundamental reactions in organic syntheses. Besides, mechanistic studies are included for the rational understanding of the catalysis. Graphene has significant potential in the field of metal-free catalysis because of the fine-tunable potential of the structure, high stability and durability, and no metal contamination, making it a next-generation candidate material in catalysis.
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Affiliation(s)
- Muhammad Sohail Ahmad
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, Japan700-8530.
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Brahmachari G, Karmakar I. Visible Light-Induced and Singlet Oxygen-Mediated Photochemical Conversion of 4-Hydroxy-α-benzopyrones to 2-Hydroxy-3-oxo-2,3-dihydrobenzofuran-2-carboxamides/carboxylates Using Rose Bengal as a Photosensitizer. J Org Chem 2020; 85:8851-8864. [DOI: 10.1021/acs.joc.0c00726] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (a Central University), Santiniketan, West Bengal 731 235, India
| | - Indrajit Karmakar
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (a Central University), Santiniketan, West Bengal 731 235, India
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Brahmachari G, Nayek N, Karmakar I, Nurjamal K, Chandra SK, Bhowmick A. Series of Functionalized 5-(2-Arylimidazo[1,2- a]pyridin-3-yl)pyrimidine-2,4(1 H,3 H)-diones: A Water-Mediated Three-Component Catalyst-Free Protocol Revisited. J Org Chem 2020; 85:8405-8414. [PMID: 32469216 DOI: 10.1021/acs.joc.0c00732] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A water-mediated and catalyst-free practical method for the synthesis of a new series of pharmaceutically interesting functionalized 5-(2-arylimidazo[1,2-a]pyridin-3-yl)pyrimidine-2,4(1H,3H)-diones has been accomplished based on a one-pot multicomponent reaction between arylglyoxal monohydrates, 2-aminopyridines/2-aminopyrimidine, and barbituric/N,N-dimethylbarbituric acids under reflux conditions. The salient features of this protocol are avoidance of any additive/catalyst and toxic organic solvents, use of water as reaction medium, clean reaction profiles, operational simplicity, ease of product isolation/purification without the aid of tedious column chromatography, good to excellent yields, and high atom-economy and low E-factor.
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Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731 235, West Bengal, India
| | - Nayana Nayek
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731 235, West Bengal, India
| | - Indrajit Karmakar
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731 235, West Bengal, India
| | - Khondekar Nurjamal
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731 235, West Bengal, India
| | - Swapan K Chandra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731 235, West Bengal, India
| | - Anindita Bhowmick
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731 235, West Bengal, India
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8
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Brahmachari G, Karmakar I. sp
2-C-H Acetoxylation of Diversely Substituted (E
)-1-(Arylmethylene)-2-phenylhydrazines Using PhI(OAc)2
as Acetoxy Source at Ambient Conditions. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900994] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis; Department of Chemistry; Visva-Bharati(a Central University); 731 235 Santiniketan- West Bengal India
| | - Indrajit Karmakar
- Laboratory of Natural Products & Organic Synthesis; Department of Chemistry; Visva-Bharati(a Central University); 731 235 Santiniketan- West Bengal India
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9
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Brahmachari G, Nurjamal K. Ultrasound-assisted and trisodium citrate dihydrate-catalyzed green protocol for efficient and one-pot synthesis of substituted chromeno[3′,4′:5,6]pyrano[2,3-d]pyrimidines at ambient conditions. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.06.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Brahmachari G, Begam S. Ceric Ammonium Nitrate (CAN): An Efficient and Eco‐Friendly Catalyst for One‐Pot Synthesis of Diversely Functionalized Biscoumarins in Aqueous Medium under Ambient Conditions. ChemistrySelect 2019. [DOI: 10.1002/slct.201900961] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic SynthesisDepartment of ChemistryVisva-Bharati (a Central University), Santiniketan- 731 235 West Bengal India
| | - Sanchari Begam
- Laboratory of Natural Products & Organic SynthesisDepartment of ChemistryVisva-Bharati (a Central University), Santiniketan- 731 235 West Bengal India
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11
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Querard P, Li CJ. Direct synthesis of indenes via a rhodium-catalyzed multicomponent C sp2-H annulation reaction. Org Biomol Chem 2019; 16:8042-8047. [PMID: 30349921 DOI: 10.1039/c8ob02359j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient, direct and multicomponent route for the synthesis of indenes is reported herein. This process is catalyzed by a rhodium(iii) complex and conducted under very mild conditions, making the overall process atom and step-economical. DFT mechanistic studies were performed to explore the mechanism of this reaction system.
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Affiliation(s)
- Pierre Querard
- Department of Chemistry, and FQRNT Center for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada.
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12
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Nurjamal K, Brahmachari G. Sodium Formate-Catalyzed One-Pot Synthesis of Functionalized Spiro[indoline-3,5′-pyrido[2,3-d
]pyrimidine]/Spiro[acenaphthylene-1,5′-pyrido[2,3-d
]-pyrimidine] Derivatives. ChemistrySelect 2019. [DOI: 10.1002/slct.201803508] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Khondekar Nurjamal
- Laboratory of Natural Products & Organic Synthesis; Department of Chemistry; Visva-Bharati (a Central University); Santiniketan- 731 235, West Bengal India
| | - Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis; Department of Chemistry; Visva-Bharati (a Central University); Santiniketan- 731 235, West Bengal India
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13
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Patel DM, Vala RM, Sharma MG, Rajani DP, Patel HM. A Practical Green Visit to the Functionalized [1,2,4]Triazolo[5,1-b
]quinazolin-8(4H
)one Scaffolds Using the Group-Assisted Purification (GAP) Chemistry and Their Pharmacological Testing. ChemistrySelect 2019. [DOI: 10.1002/slct.201803605] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Divyang M. Patel
- Department of Chemistry; Sardar Patel University; Vallabh Vidyanagar 388120, Gujarat India
| | - Ruturajsinh M. Vala
- Department of Chemistry; Sardar Patel University; Vallabh Vidyanagar 388120, Gujarat India
| | - Mayank G. Sharma
- Department of Chemistry; Sardar Patel University; Vallabh Vidyanagar 388120, Gujarat India
| | - Dhanji P. Rajani
- Microcare Laboratory and Tuberculosis Diagnosis & Research Center; Surat India
| | - Hitendra M. Patel
- Department of Chemistry; Sardar Patel University; Vallabh Vidyanagar 388120, Gujarat India
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Brahmachari G, Nayek N. A Facile Synthetic Route to Biologically Relevant Substituted 1,4-Naphthoquinonyl-2-oxoindolinylpyrimidines Under Metal-Free Organocatalytic Conditions. ChemistrySelect 2018. [DOI: 10.1002/slct.201800462] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis; Department of Chemistry; Visva-Bharati (A Central University); Santiniketan-731 235, West Bengal India
| | - Nayana Nayek
- Laboratory of Natural Products & Organic Synthesis; Department of Chemistry; Visva-Bharati (A Central University); Santiniketan-731 235, West Bengal India
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15
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Brahmachari G, Begam S, Nurjamal K. Sulfamic Acid‐Catalyzed One‐Pot Synthesis of a New Series of Biologically Relevant Indole‐Uracil Molecular Hybrids in Water at Room Temperature. ChemistrySelect 2018. [DOI: 10.1002/slct.201800488] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis, Department of ChemistryVisva-Bharati (A Central University) Santiniketan- 731 235, West Bengal India
| | - Sanchari Begam
- Laboratory of Natural Products & Organic Synthesis, Department of ChemistryVisva-Bharati (A Central University) Santiniketan- 731 235, West Bengal India
| | - Khondekar Nurjamal
- Laboratory of Natural Products & Organic Synthesis, Department of ChemistryVisva-Bharati (A Central University) Santiniketan- 731 235, West Bengal India
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16
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Yaghoubi A, Dekamin MG. Green and Facile Synthesis of 4H
-Pyran Scaffold Catalyzed by Pure Nano-Ordered Periodic Mesoporous Organosilica with Isocyanurate Framework (PMO-ICS). ChemistrySelect 2017. [DOI: 10.1002/slct.201700717] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Amene Yaghoubi
- Pharmaceutical and Heterocyclic Compounds Research Laboratory; Department of Chemistry; Iran University of Science and Technology; Tehran 16846-13114 Iran
| | - Mohammad G. Dekamin
- Pharmaceutical and Heterocyclic Compounds Research Laboratory; Department of Chemistry; Iran University of Science and Technology; Tehran 16846-13114 Iran
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Brahmachari G, Nayek N. Catalyst-Free One-Pot Three-Component Synthesis of Diversely Substituted 5-Aryl-2-oxo-/thioxo-2,3-dihydro-1 H-benzo[6,7]chromeno[2,3- d]pyrimidine-4,6,11(5 H)-triones Under Ambient Conditions. ACS OMEGA 2017; 2:5025-5035. [PMID: 31457779 PMCID: PMC6641957 DOI: 10.1021/acsomega.7b00791] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 08/14/2017] [Indexed: 06/10/2023]
Abstract
A simple, catalyst-free, straightforward, and highly efficient one-pot synthesis of pharmaceutically interesting diverse kind of a new series of functionalized 5-aryl-2-oxo-/thioxo-2,3-dihydro-1H-benzo[6,7]chromeno[2,3-d]pyrimidine-4,6,11(5H)-triones 4 (4-1-4-37) and substituted 5,5'-(1,4-phenylene)bis(2-oxo-/thioxo-2,3-dihydro-1H-benzo[6,7]chromeno[2,3-d]pyrimidine-4,6,11(5H)-trione) derivatives 4' (4'-1-4'-3) has been developed based on a three-component reaction between barbituric acid/N,N-dimethylbarbituric acid/2-thiobarbituric acid (1), aromatic aldehydes (2), and 2-hydroxy-1,4-naphthoquinone (3) in aqueous ethanol at room temperature (25-30 °C). The salient features of this protocol are mild reaction conditions, use of no catalyst, no need of column chromatographic purification, excellent yields, high atom economy, eco-friendliness, easy isolation of products, and reusability of reaction media.
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Brahmachari G, Nurjamal K. Facile and Chemically Sustainable Catalyst-Free Synthesis of Diverse 2-Aryl-4-Alkyl/Aryl-Pyrano[3,2-c]chromen-5(4H)-Ones by One-Pot Multicomponent Reactions at Room Temperature. ChemistrySelect 2017. [DOI: 10.1002/slct.201700687] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis; Department of Chemistry; Visva-Bharati (a Central University); Santiniketan-731 235, West Bengal India
| | - Khondekar Nurjamal
- Laboratory of Natural Products & Organic Synthesis; Department of Chemistry; Visva-Bharati (a Central University); Santiniketan-731 235, West Bengal India
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19
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Brahmachari G, Begam S, Nurjamal K. Bismuth Nitrate Catalyzed One-Pot Multicomponent Synthesis of a Novel Series of Diversely Substituted 1,8-Dioxodecahydroacridines at Room Temperature#. ChemistrySelect 2017. [DOI: 10.1002/slct.201700265] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis; Department of Chemistry, Visva-Bharati (a Central University); Santiniketan- 731 235, West Bengal India
| | - Sanchari Begam
- Laboratory of Natural Products & Organic Synthesis; Department of Chemistry, Visva-Bharati (a Central University); Santiniketan- 731 235, West Bengal India
| | - Khondekar Nurjamal
- Laboratory of Natural Products & Organic Synthesis; Department of Chemistry, Visva-Bharati (a Central University); Santiniketan- 731 235, West Bengal India
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20
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Abstract
The carbon–carbon (C–C) bond forms the ‘backbone’ of nearly every organic molecule, and lies at the heart of the chemical sciences! Let us explore designing of carbon–carbon frameworks at ambient conditions.
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Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis
- Department of Chemistry
- Visva-Bharati (a Central University)
- Santiniketan-731235
- India
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