1
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Singhal R, Choudhary SP, Malik B, Pilania M. I 2/DMSO-mediated oxidative C-C and C-heteroatom bond formation: a sustainable approach to chemical synthesis. RSC Adv 2024; 14:5817-5845. [PMID: 38362068 PMCID: PMC10866128 DOI: 10.1039/d3ra08685b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 01/30/2024] [Indexed: 02/17/2024] Open
Abstract
The I2/DMSO pair has emerged as a versatile, efficient, practical, and eco-friendly catalyst system, playing a significant role as a mild oxidative system, and thus employed as a good alternative to metal catalysts in synthetic chemistry. Presently, I2/DMSO is a thriving catalytic system that is used in preparing C-C and C-X (X = O/S/N/Se/Cl/Br) bonds, resulting in the formation of various bioactive molecules. Many processes utilize this system, including in situ glyoxal synthesis by diverse sp, sp2, and sp3 functionalities via iodination and subsequent Kornblum oxidation. Focusing on oxidation processes, this study examines the synergistic effect of dimethyl sulfoxide (DMSO) and molecular iodine in improving synthetic techniques. We provide a comprehensive overview of the research progress on the I2/DMSO catalytic system for the formation of C-C and C-heteroatom bonds from 2018 to the present. Additionally, the future prospects of this research field are discussed.
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Affiliation(s)
- Rakshanda Singhal
- Department of Chemistry, Manipal University Jaipur VPO- Dehmi-Kalan, Off Jaipur-Ajmer Express Way Jaipur 303007 Rajasthan India
| | - Satya Prakash Choudhary
- Department of Chemistry, Manipal University Jaipur VPO- Dehmi-Kalan, Off Jaipur-Ajmer Express Way Jaipur 303007 Rajasthan India
| | - Babita Malik
- Department of Chemistry, Manipal University Jaipur VPO- Dehmi-Kalan, Off Jaipur-Ajmer Express Way Jaipur 303007 Rajasthan India
| | - Meenakshi Pilania
- Department of Chemistry, Manipal University Jaipur VPO- Dehmi-Kalan, Off Jaipur-Ajmer Express Way Jaipur 303007 Rajasthan India
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2
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Yang ML, Zhao L, Chen HR, Ding MW. Synthesis of Luminescent Indolo[2,1- b]quinazolin-6(12 H)-ones via a Sequential Ugi/Iodine-Promoted Cyclization/Staudinger/Aza-Wittig Reaction. J Org Chem 2023; 88:16424-16434. [PMID: 37943255 DOI: 10.1021/acs.joc.3c01955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
A new efficient synthesis of indolo[2,1-b]quinazolin-6(12H)-ones via a sequential Ugi/iodine-promoted cyclization/Staudinger/aza-Wittig reaction was developed. The acid catalyzed three-component reactions of 2-azidobenzaldehydes, 2-[2-(trimethylsilyl)ethynyl]benzenamines (or o-aminoacetophenones), and isocyanides gave Ugi-3CR intermediates, which reacted subsequently with I2/DMSO and triphenylphosphine to produce indolo[2,1-b]quinazolin-6(12H)-ones in good overall yields. The obtained indolo[2,1-b]quinazolin-6(12H)-ones were all colored in bright red or orange. Their luminescent property was studied preliminarily and some of them showed high molar absorption coefficients, strong fluorescence emission intensity, and good absolute light quantum yields.
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Affiliation(s)
- Mao-Lin Yang
- National Key Laboratory of Green Pesticide, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Central China Normal University, Wuhan 430079, P. R. China
| | - Long Zhao
- National Key Laboratory of Green Pesticide, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Central China Normal University, Wuhan 430079, P. R. China
| | - Hao-Ran Chen
- National Key Laboratory of Green Pesticide, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Central China Normal University, Wuhan 430079, P. R. China
| | - Ming-Wu Ding
- National Key Laboratory of Green Pesticide, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Central China Normal University, Wuhan 430079, P. R. China
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3
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Marupalli SS, Arockiaraj M, Singh G, Rajeshkumar V. Iodine-Catalyzed Synthesis of Benzo-β-carbolines through Desulfurative Cyclization of 2-(1 H-Indol-3-ylsulfanyl)-phenylamines with Aryl Methyl Ketones. J Org Chem 2023; 88:12783-12791. [PMID: 37584251 DOI: 10.1021/acs.joc.3c00657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
A novel transition metal-free strategy for the synthesis of benzene-fused β-carboline scaffolds has been developed. This protocol offers a rapid and direct pathway to access the benzene fused β-carboline from 2-(1H-indol-3-ylsulfanyl)-phenylamines and aryl methyl ketones using an efficient catalytic system of I2/DMSO. The present mild protocol proceeds through the sequential reactions of Kornblum oxidation, Pictet-Spengler cyclization, and desulfurization to afford the desired products in excellent yields up to 99%. Moreover, this method has a wide range of substrate tolerance and is operationally simple and applicable in gram-scale synthesis.
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Affiliation(s)
- Sasi Sree Marupalli
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda 506004, Telangana, India
| | - Mariyaraj Arockiaraj
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda 506004, Telangana, India
| | - Gargi Singh
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda 506004, Telangana, India
| | - Venkatachalam Rajeshkumar
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda 506004, Telangana, India
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4
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Ravindar L, Hasbullah SA, Hassan NI, Qin HL. Cross‐Coupling of C‐H and N‐H Bonds: a Hydrogen Evolution Strategy for the Construction of C‐N Bonds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lekkala Ravindar
- Universiti Kebangsaan Malaysia Fakulti Teknologi dan Sains Maklumat Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Siti Aishah Hasbullah
- Universiti Kebangsaan Malaysia Fakulti Sains dan Teknologi Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Nurul Izzaty Hassan
- Universiti Kebangsaan Malaysia Fakulti Sains dan Teknologi Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Hua-Li Qin
- Wuhan University of Technology School of Chemistry 430070 Hubei CHINA
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5
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Rastogi GK, Deka B, Deb ML, Baruah PK. Iodine‐DMSO‐promoted Oxygenation of Indoles: Synthesis of Isatin and Isoindigo. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gaurav K. Rastogi
- Department of Applied Sciences, GUIST Gauhati University Guwahati 781014 Assam India
- Department of Applied Organic Chemistry, CSIR-NEIST Jorhat 785006 Assam India
| | - Bhaskar Deka
- Department of Applied Sciences, GUIST Gauhati University Guwahati 781014 Assam India
| | - Mohit L. Deb
- Department of Applied Sciences, GUIST Gauhati University Guwahati 781014 Assam India
| | - Pranjal K. Baruah
- Department of Applied Sciences, GUIST Gauhati University Guwahati 781014 Assam India
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6
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Zhao H, Hu B, Xu L, Walsh PJ. Palladium-catalyzed benzylic C(sp 3)-H carbonylative arylation of azaarylmethyl amines with aryl bromides. Chem Sci 2021; 12:10862-10870. [PMID: 34476065 PMCID: PMC8372623 DOI: 10.1039/d1sc02078a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 07/06/2021] [Indexed: 01/08/2023] Open
Abstract
A highly selective palladium-catalyzed carbonylative arylation of weakly acidic benzylic C(sp3)-H bonds of azaarylmethylamines with aryl bromides under 1 atm of CO gas has been achieved. This work represents the first examples of use of such weakly acidic pronucleophiles in this class of transformations. In the presence of a NIXANTPHOS-based palladium catalyst, this one-pot cascade process allows a range of azaarylmethylamines containing pyridyl, quinolinyl and pyrimidyl moieties and acyclic and cyclic amines to undergo efficient reactions with aryl bromides and CO to provide α-amino aryl-azaarylmethyl ketones in moderate to high yields with a broad substrate scope and good tolerance of functional groups. This reaction proceeds via in situ reversible deprotonation of the benzylic C-H bonds to give the active carbanions, thereby avoiding prefunctionalized organometallic reagents and generation of additional waste. Importantly, the operational simplicity, scalability and diversity of the products highlight the potential applicability of this protocol.
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Affiliation(s)
- Haoqiang Zhao
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Bowen Hu
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Lijin Xu
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
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7
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Strehl J, Hilt G. Electrochemical, Iodine-Mediated α-CH Amination of Ketones by Umpolung of Silyl Enol Ethers. Org Lett 2020; 22:5968-5972. [DOI: 10.1021/acs.orglett.0c02068] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Julia Strehl
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Strasse 9-11, D-26111 Oldenburg, Germany
| | - Gerhard Hilt
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Strasse 9-11, D-26111 Oldenburg, Germany
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8
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Malviya B, Singh K, Jaiswal PK, Shukla M, Verma VP, Vanangamudi M, Jassal AK, Punjabi PB, Sharma S. Catalyst- and Solvent-Free Coupling of 2-Methyl Quinazolinones and Isatins: An Environmentally Benign Access of Diastereoselective Schizocommunin Analogues. ACS OMEGA 2019; 4:12146-12155. [PMID: 31460329 PMCID: PMC6682076 DOI: 10.1021/acsomega.9b01514] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 07/05/2019] [Indexed: 06/10/2023]
Abstract
An environmentally benign highly atom-economic protocol for the construction of the C-C bond has been developed under catalyst- and solvent-free conditions. This protocol involves the efficient coupling of 2-methyl quinazolinones with isatin for the highly diastereoselective access of schizocommunin derivatives in excellent yields (up to 97%). Furthermore, the preliminary cytotoxicity screening of selected schizocommunin analogues displayed promising anticancer activity against human cancer cell lines, and the cytotoxic potential of active compound 12ac was also validated by in silico molecular docking simulation studies.
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Affiliation(s)
| | - Karandeep Singh
- Department
of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
| | - Pradeep K. Jaiswal
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Monika Shukla
- Department
of Chemistry, Banasthali University, Newai-Jodhpuriya Road, Vanasthali 304022, India
| | - Ved Prakash Verma
- Department
of Chemistry, Banasthali University, Newai-Jodhpuriya Road, Vanasthali 304022, India
| | - Murugesan Vanangamudi
- Department
of Medicinal and Pharmaceutical Chemistry, Sree Vidyanikethan College of Pharmacy, Tirupati, 517102 India
| | - Amanpreet Kaur Jassal
- Schulich
Faculty of Chemistry, Technion-Israel Institute
of Technology, Technion 3200003, Israel
| | - Pinki B. Punjabi
- Department
of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
| | - Siddharth Sharma
- Department
of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
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9
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Parvatkar PT, Manetsch R, Banik BK. Metal-Free Cross-Dehydrogenative Coupling (CDC): Molecular Iodine as a Versatile Catalyst/Reagent for CDC Reactions. Chem Asian J 2018; 14:6-30. [DOI: 10.1002/asia.201801237] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 09/21/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Prakash T. Parvatkar
- Department of Chemistry and Chemical Biology; Northeastern University, 102 Hurtig Hall; 360 Huntington Avenue Boston MA 02115 USA
| | - Roman Manetsch
- Department of Chemistry and Chemical Biology; Northeastern University, 102 Hurtig Hall; 360 Huntington Avenue Boston MA 02115 USA
- Department of Pharmaceutical Sciences; Northeastern University, 102 Hurtig Hall; 360 Huntington Avenue Boston MA 02115 USA
| | - Bimal K. Banik
- Community Health System of South Texas; 3135 South Sugar Road Edinburg TX 78539 USA
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10
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Zhang HH, Wang YQ, Huang LT, Zhu LQ, Feng YY, Lu YM, Zhao QY, Wang XQ, Wang Z. NaI-mediated divergent synthesis of isatins and isoindigoes: a new protocol enabled by an oxidation relay strategy. Chem Commun (Camb) 2018; 54:8265-8268. [PMID: 29989115 DOI: 10.1039/c8cc04471f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A new approach for the synthesis of isatins and isoindigoes by an inexpensive and environmentally friendly NaI-mediated transformation is disclosed. The selectivity could be switched by simply varying the solvent, and isatins (using THF) and isoindigoes (using DMSO) could be obtained in moderate to excellent yields.
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Affiliation(s)
- Hong-Hua Zhang
- School of Pharmacy, Lanzhou University, West Donggang Road. No. 199, Lanzhou 730000, China.
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11
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Reddy LM, Reddy VV, Prathima PS, Reddy CK, Reddy BVS. Metal-free One-pot Synthesis of 1,2,4-Triazolo[4,3-a]pyridines from 2-Hydrazinylpyridines. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800512] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- L. Madhava Reddy
- Fluoro & Agrochemicals; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007
- Department of Chemistry; Osmania University; Hyderabad 500 007 India
| | - V. Veerabadra Reddy
- Fluoro & Agrochemicals; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007
| | - P. Sai Prathima
- Fluoro & Agrochemicals; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007
| | - Ch. Krishna Reddy
- Fluoro & Agrochemicals; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007
| | - B. V. Subba Reddy
- Fluoro & Agrochemicals; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007
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12
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2-Aminophenones, a common precursor to N-aryl isatins and acridines endowed with bioactivities. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.02.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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13
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Monga A, Bagchi S, Sharma A. Iodine/DMSO oxidations: a contemporary paradigm in C–N bond chemistry. NEW J CHEM 2018. [DOI: 10.1039/c7nj04513a] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A new era in the organic synthetic world is demanding greener protocols for the execution of reactions.
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Affiliation(s)
- Aparna Monga
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Sourav Bagchi
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Anuj Sharma
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
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14
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15
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Badigenchala S, Sekar G. NIS Mediated Cross-Coupling of C(sp 2)-H and N-H Bonds: A Transition-Metal-Free Approach toward Indolo[1,2-a]quinazolinones. J Org Chem 2017; 82:7657-7665. [PMID: 28682077 DOI: 10.1021/acs.joc.7b01080] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A metal- and base-free protocol for intramolecular cross-coupling of C(sp2)-H and N-H bonds using N-iodosuccinimide (NIS) has been demonstrated. This environmentally benign approach furnishes a series of substituted indolo[1,2-a]quinazolinones from the suitably fabricated indoles via C-N bond forming cyclization in 28-82% yield. A plausible mechanism is proposed for this cyclization based on the results of a control experiment. This methodology requires no additional metal catalyst, oxidant, or base. Furthermore, the synthetic utility of the protocol is demonstrated by performing a gram scale reaction.
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Affiliation(s)
- Sindhura Badigenchala
- Department of Chemistry, Indian Institute of Technology Madras , Chennai, Tamil Nadu 600 036, India
| | - Govindasamy Sekar
- Department of Chemistry, Indian Institute of Technology Madras , Chennai, Tamil Nadu 600 036, India
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16
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Qian P, Su JH, Wang Y, Bi M, Zha Z, Wang Z. Electrocatalytic C–H/N–H Coupling of 2′-Aminoacetophenones for the Synthesis of Isatins. J Org Chem 2017; 82:6434-6440. [DOI: 10.1021/acs.joc.7b00635] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Peng Qian
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry & Collaborative Innovation Center of Suzhou Nano Science and Technology and ‡CAS Key Laboratory of Microscale Magnetic Resonance, Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Ji-Hu Su
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry & Collaborative Innovation Center of Suzhou Nano Science and Technology and ‡CAS Key Laboratory of Microscale Magnetic Resonance, Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yukang Wang
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry & Collaborative Innovation Center of Suzhou Nano Science and Technology and ‡CAS Key Laboratory of Microscale Magnetic Resonance, Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Meixiang Bi
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry & Collaborative Innovation Center of Suzhou Nano Science and Technology and ‡CAS Key Laboratory of Microscale Magnetic Resonance, Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhenggen Zha
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry & Collaborative Innovation Center of Suzhou Nano Science and Technology and ‡CAS Key Laboratory of Microscale Magnetic Resonance, Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhiyong Wang
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry & Collaborative Innovation Center of Suzhou Nano Science and Technology and ‡CAS Key Laboratory of Microscale Magnetic Resonance, Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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17
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Zhu D, Luo WK, Yang L, Ma DY. Iodine-catalyzed oxidative multiple C–H bond functionalization of isoquinolines with methylarenes: an efficient synthesis of isoquinoline-1,3,4(2H)-triones. Org Biomol Chem 2017; 15:7112-7116. [DOI: 10.1039/c7ob01539a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
An iodine-catalyzed multiple C–H bond functionalization of isoquinolines with methylarenes via a successive benzylic sp3 C–H iodination/N-benzylation/amidation/double sp2 C–H oxidation sequence to yield isoquinoline-1,3,4(2H)-triones is developed for the first time.
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Affiliation(s)
- Di Zhu
- Key Laboratory for Environmentally Friendly Chemistry and Application of the Ministry of Education
- College of Chemistry
- Xiangtan University
- Hunan
- PR China
| | - Wen-Kun Luo
- Key Laboratory for Environmentally Friendly Chemistry and Application of the Ministry of Education
- College of Chemistry
- Xiangtan University
- Hunan
- PR China
| | - Luo Yang
- Key Laboratory for Environmentally Friendly Chemistry and Application of the Ministry of Education
- College of Chemistry
- Xiangtan University
- Hunan
- PR China
| | - Da-You Ma
- Xiangya School of Pharmaceutical Sciences
- Central South University
- Hunan
- PR China
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18
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Salvanna N, Ramesh P, Santosh Kumar K, Das B. Copper-catalyzed aerobic oxidative intramolecular amidation of 2-aminophenylacetylenes: a domino process for the synthesis of isatin. NEW J CHEM 2017. [DOI: 10.1039/c7nj02441j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A novel CuI-catalyzed oxidative amidation of 2-aminophenylacetylenes leading to the formation of isatins by using open air as an oxygen source has been developed. The reaction proceeded smoothly and provided a variety of isatin derivatives in good yields.
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Affiliation(s)
- N. Salvanna
- Osmania University Post Graduate College
- Narsapur
- Medak
- India
| | - Perla Ramesh
- Natural Products Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | | | - Biswanath Das
- Natural Products Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
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19
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Foley C, Shaw A, Hulme C. Two-Step Route to Diverse N-Functionalized Peptidomimetic-like Isatins through an Oxidation/Intramolecular Oxidative-Amidation Cascade of Ugi Azide and Ugi Three-Component Reaction Products. Org Lett 2016; 18:4904-4907. [DOI: 10.1021/acs.orglett.6b02383] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Christopher Foley
- Department of Chemistry
and Biochemistry, College of Science and ‡Department of Pharmacology
and Toxicology, College of Pharmacy, The University of Arizona, Tucson, Arizona 85721, United States
| | - Arthur Shaw
- Department of Chemistry
and Biochemistry, College of Science and ‡Department of Pharmacology
and Toxicology, College of Pharmacy, The University of Arizona, Tucson, Arizona 85721, United States
| | - Christopher Hulme
- Department of Chemistry
and Biochemistry, College of Science and ‡Department of Pharmacology
and Toxicology, College of Pharmacy, The University of Arizona, Tucson, Arizona 85721, United States
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20
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Cai XH, Jin J, Xie B. Recent advance in direct sp3 carbon-hydrogen bond functionalizations. ACTA ACUST UNITED AC 2016. [DOI: 10.5155/eurjchem.7.2.248-270.1412] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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21
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Liu P, Guo J, Wei W, Liu X, Sun P. Iodine-Catalyzed Oxidation ofN-Substituted Indoles by using Chloramine-B: A Facile and Practical Approach to Isatins. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600061] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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22
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Chandrasekar S, Sekar G. An efficient synthesis of iminoquinones by a chemoselective domino ortho-hydroxylation/oxidation/imidation sequence of 2-aminoaryl ketones. Org Biomol Chem 2016; 14:3053-60. [PMID: 26891598 DOI: 10.1039/c5ob02659h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient chemoselective domino oxidative homocoupling of 2-aminoaryl ketones in the presence of 2-iodoxybenzoic acid (IBX) for the synthesis of iminoquinone has been developed. The domino reaction proceeds via three consecutive steps, such as domino ortho-hydroxylation of 2-aminoaryl ketones, oxidation of a phenol derivative to benzoquinone and dimerization through imine formation to yield iminoquinone. Importantly, this reaction allows the recycling of the oxidant IBX by recovering the by-product iodosobenzoic acid (IBA) and oxidizing it back to IBX. A four step domino strategy for the synthesis of iminoquinone through in situ generation of 2-amino benzophenone from (2-amino phenyl)(phenyl)methanol was also developed.
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Affiliation(s)
- Selvaraj Chandrasekar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, India.
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Muthukumar A, Mamillapalli NC, Sekar G. Potassium Phosphate-Catalyzed Chemoselective Reduction of α-Keto Amides: Route to Synthesize Passerini Adducts and 3-Phenyloxindoles. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500815] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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24
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25
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Badigenchala S, Rajeshkumar V, Sekar G. Iodine mediated intramolecular C2-amidative cyclization of indoles: a facile access to indole fused tetracycles. Org Biomol Chem 2016; 14:2297-305. [DOI: 10.1039/c5ob02449h] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A novel and metal-free I2-mediated intramolecular C2 amidation of indoles under mild reaction conditions is developed for synthesis of indole fused tetracycles.
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Affiliation(s)
| | | | - Govindasamy Sekar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600 036
- India
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26
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Reddy BVS, Reddy DM, Reddy GN, Reddy MR, Reddy VK. Domino Oxidative Cyclization of 2-Aminoacetophenones for the One-Pot Synthesis of Tryptanthrin Derivatives. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501079] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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27
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Metal free synthesis of α-keto amides from 2-hydroxy acetophenones through domino alcohol oxidation–oxidative amidation reaction. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.053] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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28
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Liu H, Li Y, Wang D, Qin Y, Ji M. An Efficient Synthesis of Ceritinib (LDK378) Using a Sandmeyer Reaction. JOURNAL OF CHEMICAL RESEARCH 2015. [DOI: 10.3184/174751915x14381780373834] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A convenient route for the synthesis of Novartis's second-generation anaplastic lymphoma kinase inhibitor Ceritinib (LDK378) involving starting materials that are commercially available has been achieved. The procedure employed mild reaction conditions and avoided the use of expensive reagents compared to the original synthetic route reported by Novartis. More importantly, gram scale synthesis was accomplished and this protocol could be valid in drug discovery synthesis.
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Affiliation(s)
- Haidong Liu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing city 210096, P. R. China
- Suzhou Key Laboratory of Biomaterials and Technologies and Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou 215123, P.R. China
| | - Yuan Li
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing city 210096, P. R. China
| | - Dongdong Wang
- Suzhou Key Laboratory of Biomaterials and Technologies and Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou 215123, P.R. China
| | - Yu Qin
- Chia Tai Tianqing Pharmaceutical Group CO., Ltd, Nanjing 210096, P. R. China
| | - Min Ji
- School of Biological Science and Medical Engineering, Southeast University, Nanjing city 210096, P. R. China
- Suzhou Key Laboratory of Biomaterials and Technologies and Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou 215123, P.R. China
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29
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Satish G, Polu A, Ramar T, Ilangovan A. Iodine-Mediated C–H Functionalization of sp, sp2, and sp3 Carbon: A Unified Multisubstrate Domino Approach for Isatin Synthesis. J Org Chem 2015; 80:5167-75. [DOI: 10.1021/acs.joc.5b00581] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Gandhesiri Satish
- School
of Chemistry, Bharathidasan University, Tiruchirappalli 620024, India
| | - Ashok Polu
- School
of Chemistry, Bharathidasan University, Tiruchirappalli 620024, India
| | - Thangeswaran Ramar
- School
of Chemistry, Bharathidasan University, Tiruchirappalli 620024, India
- Syngene International Limited, Bangalore 560 099, India
| | - Andivelu Ilangovan
- School
of Chemistry, Bharathidasan University, Tiruchirappalli 620024, India
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30
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Liu H, Chen H, Li Y, Lv Y, Cai J, Ji M. A novel and one-pot method for synthesis of unprecedented 3,3-dimethyl-2-amide indoles under metal-free conditions. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.03.087] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Guha S, Rajeshkumar V, Kotha SS, Sekar G. A Versatile and One-Pot Strategy to Synthesize α-Amino Ketones from Benzylic Secondary Alcohols Using N-Bromosuccinimide. Org Lett 2015; 17:406-9. [DOI: 10.1021/ol503683q] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Somraj Guha
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600036, India
| | | | - Surya Srinivas Kotha
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600036, India
| | - Govindasamy Sekar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600036, India
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32
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Dutta S, Kotha SS, Sekar G. Metal free one-pot synthesis of α-ketoamides from terminal alkenes. RSC Adv 2015. [DOI: 10.1039/c5ra05671c] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
A practical approach towards the synthesis of α-ketoamides from terminal alkenes has been developed using I2/IBX under one-pot reaction conditions.
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Affiliation(s)
- Sayan Dutta
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai
- India
| | | | - Govindasamy Sekar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai
- India
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33
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Karthikeyan I, Arunprasath D, Sekar G. An efficient synthesis of pyrido[1,2-a]indoles through aza-Nazarov type cyclization. Chem Commun (Camb) 2015; 51:1701-4. [DOI: 10.1039/c4cc08783f] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition metal free Brønsted acid mediated synthesis of pyrido[1,2-a]indole scaffolds has been developed through aza-Nazarov type cyclization of readily available diaryl(2-pyridyl)methanol using formic acid for the synthesis of biologically and medicinally important pyrido[1,2-a]indole, indolo[1,2-a]quinoline and pyrimido[1,2-a]indole derivatives.
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Affiliation(s)
- Iyyanar Karthikeyan
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600036
- India
| | | | - Govindasamy Sekar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600036
- India
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34
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Liu S, Gao Q, Wu X, Zhang J, Ding K, Wu A. Formamidine hydrochloride as an amino surrogate: I2-catalyzed oxidative amidation of aryl methyl ketones leading to free (N–H) α-ketoamides. Org Biomol Chem 2015; 13:2239-42. [DOI: 10.1039/c4ob02591a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A highly efficient molecular iodine catalyzed oxidative amidation of aryl methyl ketones has been developed. This reaction represents a novel strategy for the synthesis of free (N–H) α-ketoamides.
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Affiliation(s)
- Shan Liu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
| | - Qinghe Gao
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
| | - Xia Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
| | - Jingjing Zhang
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
| | - Kerong Ding
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
| | - Anxin Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
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35
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Chandrasekar S, Karthikeyan I, Sekar G. An efficient and metal free synthesis of benzylpyridines using HI through the deoxygenation reaction. RSC Adv 2015. [DOI: 10.1039/c5ra09257d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient and practical method for the synthesis of benzylpyridines has been developed using aqueous hydroiodic acid in acetic acid.
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Affiliation(s)
| | - Iyyanar Karthikeyan
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600036, India
| | - Govindasamy Sekar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600036, India
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36
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Mamillapalli NC, Sekar G. Metal free chemoselective reduction of α-keto amides using TBAF as catalyst. RSC Adv 2014. [DOI: 10.1039/c4ra13090a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Metal and ligand free chemoselective reduction of keto group and complete reduction of the both keto and amide groups of α-keto amide with hydrosilanes using tetrabutylammoniumflouride (TBAF) as catalyst have been accomplished. This methodology affords an efficient and economic route for the synthesis of biologically important α-hydroxy amides and β-amino alcohols.
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Affiliation(s)
| | - Govindasamy Sekar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai, India
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