1
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Tian JS, Xu SW, Bi YH, Cao ZZ, Loh TP. Oxidative Amination of Aldehydes with Amines into α-Amino Ketones. Org Lett 2023. [PMID: 38057263 DOI: 10.1021/acs.orglett.3c03771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Oxidative amination for the installation of nitrogen functional molecules from nitrogen nucleophiles has always been a very challenging topic in organic synthesis. Here we report a novel conversion of different aldehydes with secondary amines for the synthesis of diversified α-amino ketones. This method can be achieved through oxidative rearrangement of an in situ-generated enamine intermediate promoted by commercially available sodium percarbonate. Furthermore, this one-pot process is also suitable for the functional modification of complex molecules.
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Affiliation(s)
- Jie-Sheng Tian
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Shuang-Wen Xu
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Yan-Hang Bi
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Zhan-Zhi Cao
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Teck-Peng Loh
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China
- School of Chemistry, Chemical Engineering and Biotechnology (CCEB), Nanyang Technological University, Singapore 637371
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2
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Davies RA, Nguyen VT, Eltit JM, Glennon RA. Structure-Activity Relationships for a Recently Controlled Synthetic Cathinone Dopamine Transporter Reuptake Inhibitor: α-Pyrrolidinohexiophenone (α-PHP). ACS Chem Neurosci 2023; 14:2527-2536. [PMID: 37406364 PMCID: PMC10670441 DOI: 10.1021/acschemneuro.3c00156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2023] Open
Abstract
α-Pyrrolidinohexiophenone (α-PHP) is the one-carbon unit α-extended homolog of the better-known and widely abused synthetic cathinone central stimulant α-PVP ("flakka"); both are now U.S. Schedule I controlled substances. Structurally, α-PVP and α-PHP possess a common terminal N-pyrrolidine moiety and differ only with respect to the length of their α-alkyl chain. Using a synaptosomal assay, we previously reported that α-PHP is at least as potent as α-PVP as a dopamine transporter (DAT) reuptake inhibitor. A systematic structure-activity study of synthetic cathinones (e.g., α-PHP) as DAT reuptake inhibitors (i.e., transport blockers), a mechanism thought responsible for their abuse liability, has yet to be conducted. Here, we examined a series of 4-substituted α-PHP analogues and found that, with one exception, all behaved as relatively (28- to >300-fold) selective DAT versus serotonin transporter (SERT) reuptake inhibitors with DAT inhibition potencies of most falling within a very narrow (i.e., <3-fold) range. The 4-CF3 analogue of α-PHP was a confirmed "outlier" in that it was at least 80-fold less potent than the other analogues and displayed reduced (i.e., no) DAT vs SERT selectivity. Consideration of various physicochemical properties of the CF3 group, relative to that of the other substituents involved here, provided relatively little insight. Unlike with DAT-releasing agents, as previously reported by us, a QSAR study was precluded because of the limited range of empirical results (with the exception of the 4-CF3 analogue) for DAT reuptake inhibition.
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Affiliation(s)
- Rachel A. Davies
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University; Richmond, Virginia 23298 U.S
| | - Vy T. Nguyen
- Department of Physiology and Biophysics, School of Medicine, Virginia Commonwealth University; Richmond, Virginia 23298 U.S
| | - Jose M. Eltit
- Department of Physiology and Biophysics, School of Medicine, Virginia Commonwealth University; Richmond, Virginia 23298 U.S
| | - Richard A. Glennon
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University; Richmond, Virginia 23298 U.S
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3
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Synthesis of Glycoluril Dimers with the Ability to Form Polymeric Self-Associates in Water. CHEMISTRY 2022. [DOI: 10.3390/chemistry4030053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Supramolecular self-assembly in water resulting in polymeric structures is emerging because of its potential in the preparation of adaptive materials with applications in biology and medicine. Here, we report the first example of host molecules based on glycoluril dimers, which self-associate into linear oligomers in water. The degree of polymerization for the resulting supramolecular aggregates was calculated using the isodesmic model and the Carothers equation. The model compound was prepared to enable a deeper understanding of the forces responsible for the self-association of the glycoluril dimer-based monomers in water.
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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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Yadav R, Darakshan, Parvin T. Catalyst‐free one‐pot synthesis of quinoline tethered
α
‐amino ketones by multicomponent reactions. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4530] [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)
- Rahul Yadav
- Department of Chemistry National Institute of Technology Patna, Ashok Rajpath Patna
| | - Darakshan
- Department of Chemistry National Institute of Technology Patna, Ashok Rajpath Patna
| | - Tasneem Parvin
- Department of Chemistry National Institute of Technology Patna, Ashok Rajpath Patna
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6
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Bloyet C, Sciortino F, Matsushita Y, Karr PA, Liyanage A, Jevasuwan W, Fukata N, Maji S, Hynek J, D'Souza F, Shrestha LK, Ariga K, Yamazaki T, Shirahata N, Hill JP, Payne DT. Photosensitizer Encryption with Aggregation Enhanced Singlet Oxygen Production. J Am Chem Soc 2022; 144:10830-10843. [PMID: 35587544 DOI: 10.1021/jacs.2c02596] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Chromophores that generate singlet oxygen (1O2) in water are essential to developing noninvasive disease treatments using photodynamic therapy (PDT). A facile approach for formation of stable colloidal nanoparticles of 1O2 photosensitizers, which exhibit aggregation enhanced 1O2 generation in water toward applications as PDT agents, is reported. Chromophore encryption within a fuchsonarene macrocyclic scaffold insulates the photosensitizer from aggregation induced deactivation pathways, enabling a higher chromophore density than typical 1O2 generating nanoparticles. Aggregation enhanced 1O2 generation in water is observed, and variation in molecular structure allows for regulation of the physical properties of the nanoparticles which ultimately affects the 1O2 generation. In vitro activity and the ability of the particles to pass through the cell membrane into the cytoplasm is demonstrated using confocal fluorescence microscopy with HeLa cells. Photosensitizer encryption in rigid macrocycles, such as fuchsonarenes, offers new prospects for the production of biocompatible nanoarchitectures for applications involving 1O2 generation.
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Affiliation(s)
- Clarisse Bloyet
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Flavien Sciortino
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Yoshitaka Matsushita
- Research Network and Facility Services Division, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Paul A Karr
- Department of Physical Sciences and Mathematics, Wayne State College, 111 Main Street, Wayne, Nebraska 68787, United States
| | - Anuradha Liyanage
- Department of Chemistry, University of North Texas, 1155 Union Circle, 305070 Denton, Texas 76203, United States
| | - Wipakorn Jevasuwan
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Naoki Fukata
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Subrata Maji
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Jan Hynek
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Francis D'Souza
- Department of Chemistry, University of North Texas, 1155 Union Circle, 305070 Denton, Texas 76203, United States
| | - Lok Kumar Shrestha
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Katsuhiko Ariga
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.,Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Tomohiko Yamazaki
- Research Center for Functional Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Naoto Shirahata
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Jonathan P Hill
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Daniel T Payne
- International Center for Young Scientists, National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
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7
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Yu W, Wang L, Yu X, Luo S. Fluorescent Dye/Nickel Synergistic Catalytic Decarboxylative Carbonylation Reaction. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202110018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Ghodse SM, Hatvate NT, Telvekar VN. One pot synthesis of
α‐
N
‐heteroaryl ketone derivatives from aryl ketones using aqueous
NaICl
2. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shrikant M. Ghodse
- Department of Pharmaceutical Chemistry Prin. K. M. Kundnani College of Pharmacy, Affiliated to University of Mumbai Mumbai India
| | | | - Vikas N. Telvekar
- Department of Pharmaceutical Sciences & Technology Institute of Chemical Technology Mumbai India
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9
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Deka B, Rastogi GK, Deb ML, Baruah PK. Ten Years of Glory in the α-Functionalizations of Acetophenones: Progress Through Kornblum Oxidation and C-H Functionalization. Top Curr Chem (Cham) 2021; 380:1. [PMID: 34746982 DOI: 10.1007/s41061-021-00356-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 10/21/2021] [Indexed: 11/29/2022]
Abstract
This review article focuses on the α-functionalization of acetophenones involving Kornblum oxidation and C-H functionalizations. Although various other strategies, such as classical approaches, enamine approaches and umpolung strategy are also known for this functionalization, here we discuss mainly the Kornblum oxidation approach and C-H functionalization strategy as they have advantages over the others. In Kornblum oxidation, the reaction uses iodine and dimethylsulfoxide and proceeds through the formation of arylglyoxal as the key intermediate. In C-H functionalization, the reaction requires metal, or metal-free catalyst, and generates radical intermediate in most cases. α-Functionalization of acetophenones is very important because of their huge applications in the synthesis of various natural products and pharmaceuticals and, therefore, a number of research articles have been published in this area. However, no review articles are available so far. In this article, we present a succinct discussion of various important and novel reactions, along with their mechanisms, published since 2012 to date. We believe that this first review article in this field will give readers one-stop information on this topic and encourage further intriguing work in this area.
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Affiliation(s)
- Bhaskar Deka
- Department of Applied Sciences, GUIST, Gauhati University, Guwahati, Assam, 781014, India
| | - Gaurav K Rastogi
- Department of Applied Sciences, GUIST, Gauhati University, Guwahati, Assam, 781014, India
| | - Mohit L Deb
- Department of Applied Sciences, GUIST, Gauhati University, Guwahati, Assam, 781014, India
| | - Pranjal K Baruah
- Department of Applied Sciences, GUIST, Gauhati University, Guwahati, Assam, 781014, India.
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10
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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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11
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Lamb JS, Takashima R, Suzuki Y. NHC-Catalyzed Aza-Benzoin Condensation of N, N'-Dipyridin-2-yl Aminals with Aldehydes. J Org Chem 2021; 86:10224-10234. [PMID: 34291942 DOI: 10.1021/acs.joc.1c00973] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
α-Amino ketones are useful compounds because of their synthetic utility and bioactivities. After observing the ability of N,N'-dipyridin-2-yl aminals to form imines in situ, the synthesis of α-amino ketones using N,N'-dipyridin-2-yl aminals was proposed. Through the NHC-catalyzed aza-benzoin reaction between aromatic/aliphatic aldehydes and N,N'-dipyridin-2-yl aminals, α-amino ketones, including aromatic, heterocyclic, and aliphatic versions, were synthesized with yields up to 99%. A direct route toward N-Boc-protected α-amino ketones from N,N,N'-tris-Boc aminals was also discovered, yielding the desired N-Boc-protected α-amino ketones in yields up to 73%.
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Affiliation(s)
- Justin S Lamb
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan
| | - Ryo Takashima
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan
| | - Yumiko Suzuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan
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12
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Nagare YK, Shah IA, Yadav J, Pawar AP, Choudhary R, Chauhan P, Kumar I. Electrochemical Oxidative Coupling Between Benzylic C(sp 3)-H and N-H of Secondary Amines: Rapid Synthesis of α-Amino α-Aryl Esters. J Org Chem 2021; 86:9682-9691. [PMID: 34184902 DOI: 10.1021/acs.joc.1c00944] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
An intermolecular electrochemical coupling between the benzylic C(sp3)-H bond and various secondary amines is reported. The electronic behavior of two electronically rich units viz the α-position of α-aryl acetates and amines was engineered electrochemically, thus facilitating their reactivity for the direct access of α-amino esters. A series of acyclic/cyclic secondary amines and α-aryl acetates were tested to furnish the corresponding α-amino esters with high yields (up to 92%) under mild conditions.
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Affiliation(s)
- Yadav Kacharu Nagare
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Imtiyaz Ahmad Shah
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Jyothi Yadav
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Amol Prakash Pawar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Rahul Choudhary
- Praveen Laboratories Pvt. Ltd., Surat 394304, Gujarat, India
| | - Pankaj Chauhan
- Department of Chemistry, Indian Institute of Technology Jammu, Jammu 181221, India
| | - Indresh Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
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13
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Radolko J, Ehlers P, Langer P. Recent Advances in Transition‐Metal‐Catalyzed Reactions of N‐Tosylhydrazones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100332] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jan Radolko
- Universität Rostock Institut für Chemie A.-Einstein-Str. 3a 18059 Rostock Germany
| | - Peter Ehlers
- Universität Rostock Institut für Chemie A.-Einstein-Str. 3a 18059 Rostock Germany
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Peter Langer
- Universität Rostock Institut für Chemie A.-Einstein-Str. 3a 18059 Rostock Germany
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock Albert-Einstein-Str. 29a 18059 Rostock Germany
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14
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Xu GQ, Xiao TF, Feng GX, Liu C, Zhang B, Xu PF. Metal-Free α-C(sp3)–H Aroylation of Amines via a Photoredox Catalytic Radical–Radical Cross-Coupling Process. Org Lett 2021; 23:2846-2852. [DOI: 10.1021/acs.orglett.1c00226] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Guo-Qiang Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Teng-Fei Xiao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Guo-Xuan Feng
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Chen Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Baoxin Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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15
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Allen LAT, Raclea RC, Natho P, Parsons PJ. Recent advances in the synthesis of α-amino ketones. Org Biomol Chem 2021; 19:498-513. [PMID: 33325975 DOI: 10.1039/d0ob02098b] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Due to the importance of the amino ketone motif in synthetic and medicinal chemistry, the number of protocols developed in recent years has considerably increased. This review serves to collate and critically evaluate novel methodologies published since 2011 towards this high value synthon. The chapters are divided by the requisite functionality in the starting material, and an emphasis is placed on discussing functional group compatibility and resultant product substitution patterns. Throughout, applications to medicinal targets are highlighted and mechanistic details are presented, and we further provide a short outlook for future development and emerging potential within this area.
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Affiliation(s)
- Lewis A T Allen
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, UK.
| | - Robert-Cristian Raclea
- Massachusetts Institute of Technology, Department of Chemistry, 77, Massachusetts Avenue, Cambridge, MA 02139-4307, USA
| | - Philipp Natho
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, UK.
| | - Philip J Parsons
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, UK.
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16
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Mohite AR, Phatake RS, Dubey P, Agbaria M, Shames AI, Lemcoff NG, Reany O. Thiourea-Mediated Halogenation of Alcohols. J Org Chem 2020; 85:12901-12911. [DOI: 10.1021/acs.joc.0c01431] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Amar R. Mohite
- Department of Natural Sciences, The Open University of Israel, Ra’anana 4353701, Israel
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Ravindra S. Phatake
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Pooja Dubey
- Department of Natural Sciences, The Open University of Israel, Ra’anana 4353701, Israel
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Mohamed Agbaria
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Alexander I. Shames
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - N. Gabriel Lemcoff
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
- Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Ofer Reany
- Department of Natural Sciences, The Open University of Israel, Ra’anana 4353701, Israel
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17
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Du D, Zhang K, Ma R, Chen L, Gao J, Lu T, Shi Z, Feng J. Bio- and Medicinally Compatible α-Amino-Acid Modification via Merging Photoredox and N-Heterocyclic Carbene Catalysis. Org Lett 2020; 22:6370-6375. [DOI: 10.1021/acs.orglett.0c02202] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ding Du
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Kuili Zhang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Rui Ma
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Lei Chen
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jian Gao
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Tao Lu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Zhihao Shi
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jie Feng
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
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18
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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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19
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Raclea RC, Natho P, Allen LAT, White AJP, Parsons PJ. Oxidative Deconstruction of Azetidinols to α-Amino Ketones. J Org Chem 2020; 85:9375-9385. [PMID: 32543189 DOI: 10.1021/acs.joc.0c00986] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A silver-mediated synthesis of α-amino ketones via the oxidative deconstruction of azetidinols has been developed using a readily scalable protocol with isolated yields up to 80%. The azetidinols are easily synthesized in one step and can act as protecting groups for these pharmaceutically relevant synthons. Furthermore, mechanistic insights are presented and these data have revealed that the transformation is likely to proceed through the β-scission of an alkoxy radical, followed by oxidation and C-N cleavage of the resulting α-amido radical.
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Affiliation(s)
- Robert-Cristian Raclea
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, U.K
| | - Philipp Natho
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, U.K
| | - Lewis A T Allen
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, U.K
| | - Andrew J P White
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, U.K
| | - Philip J Parsons
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, U.K
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20
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N-Halosuccinimides as Precatalysts for C-, N-, O-, and X-Nucleophilic Substitution Reactions of Alcohols under Mild Reaction Conditions. Catalysts 2020. [DOI: 10.3390/catal10040460] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
N-halosuccinimides (chloro, bromo, and iodo, respectively) were introduced, tested, and applied as efficient and non-metal precatalysts for C-, N-, O-, and X-nucleophilic substitution reactions of alcohols under solvent-free reaction conditions (SFRC) or under high substrate concentration reaction conditions (HCRC) efficiently and selectively, into the corresponding products.
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21
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22
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Zhang HH, Yu S. Visible-Light-Induced Radical Acylation of Imines with α-Ketoacids Enabled by Electron-Donor–Acceptor Complexes. Org Lett 2019; 21:3711-3715. [DOI: 10.1021/acs.orglett.9b01169] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Hong-Hao Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shouyun Yu
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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23
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Kulkarni MR, Lad NP, Gaikwad ND. N-Chlorosuccinimide (NCS)-N,N-dimethylformamide (DMF), a reagent for the oxidation of benzylic alcohols to aldehydes and ketones. Mol Divers 2019; 24:437-442. [PMID: 31049787 DOI: 10.1007/s11030-019-09954-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 04/19/2019] [Indexed: 10/26/2022]
Abstract
The oxidation of benzylic alcohol to corresponding aldehyde and ketone using N-chlorosuccinimide (NCS)-N,N-dimethylformamide (DMF) has been described. This method gives easy access to the corresponding carbonyl compounds under metal-free conditions, without the use of corrosive reagent at ambient temperature in good yield.
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Affiliation(s)
- Mahesh R Kulkarni
- Organic Chemistry Research Centre, Department of Chemistry, K.R.T. Arts, B.H. Commerce and A.M. Science College, Gangapur Road, Nashik, MS, 422 002, India
| | - Nitin P Lad
- Organic Chemistry Research Centre, Department of Chemistry, K.R.T. Arts, B.H. Commerce and A.M. Science College, Gangapur Road, Nashik, MS, 422 002, India
| | - Nitin D Gaikwad
- Organic Chemistry Research Centre, Department of Chemistry, K.R.T. Arts, B.H. Commerce and A.M. Science College, Gangapur Road, Nashik, MS, 422 002, India.
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24
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Wang Q, Jiang Y, Zeng C, Sun B. Electrocatalytic Synthesis of Non‐Symmetric Biphenols Mediated by Tri(p‐bromophenyl)amine: Selective Oxidative Cross‐Coupling of Different Phenols and Naphthols. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201800560] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qing‐Qing Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, School of Food and Chemical EngineeringBeijing Technology and Business University Beijing 100048 China
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science & BioengineeringBeijing University of Technology Beijing 100124 China
| | - Yang‐Ye Jiang
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science & BioengineeringBeijing University of Technology Beijing 100124 China
| | - Cheng‐Chu Zeng
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science & BioengineeringBeijing University of Technology Beijing 100124 China
| | - Bao‐Guo Sun
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, School of Food and Chemical EngineeringBeijing Technology and Business University Beijing 100048 China
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25
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Wei T, Zeng Y, He W, Geng L, Hong L. A facile transformation of alkynes into α-amino ketones by an N-bromosuccinimide-mediated one-pot strategy. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.03.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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26
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Kolesnikova TO, Khatsko SL, Demin KA, Shevyrin VA, Kalueff AV. DARK Classics in Chemical Neuroscience: α-Pyrrolidinovalerophenone ("Flakka"). ACS Chem Neurosci 2019; 10:168-174. [PMID: 30384587 DOI: 10.1021/acschemneuro.8b00525] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Flakka (alpha-pyrrolidinovalerophenone, α-PVP) is a new psychoactive substance, chemically close to cathinone, the primary psychoactive alkaloid of khat ( Catha edulis). Like other synthetic cathinones, α-PVP is a potent inhibitor of the dopamine and norepinephrine transporters. Its robust clinical effects include hallucinations, arousal, aggression/violence, and euphoria. In animal models, α-PVP evokes hyperlocomotion and aberrant/stereotypic behaviors. Here, we discuss the history, synthesis, pharmacological mechanisms, metabolism, abuse potential, and societal impact of α-PVP. Today, α-PVP is a tightly controlled substance, currently banned in the United States and other countries worldwide. However, the growing abuse and complex central nervous system (CNS) effects of α-PVP remain poorly understood, necessitating further pharmacological and pharmacogenetic studies of this drug. Its interesting pharmacological profile (co-inhibition of dopamine and norepinephrine, but not serotonin, transporters) also calls for further studies of α-PVP in animal models, to dissect serotonergic from other monoaminergic mechanisms of action of drugs of abuse. Finally, screening α-PVP and related compounds in vivo may foster discovery of new CNS drugs, including developing novel CNS drugs and identifying their molecular targets.
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Affiliation(s)
| | | | - Konstantin A. Demin
- Institute of Experimental Medicine, Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg 194156, Russia
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg 199034, Russia
| | | | - Allan V. Kalueff
- School of Pharmacy, Southwest University, Chongqing 400700, China
- Anatomy and Physiological Laboratory, Ural Federal University, Ekaterinburg 620002, Russia
- ZENEREI Research Center, Slidell, Louisiana 70458, United States
- Laboratory of Biological Psychiatry, ITBM, St. Petersburg State University, St. Petersburg 199034, Russia
- Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg 194156, Russia
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27
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Kazi I, Sekar G. An efficient synthesis of benzothiazole using tetrabromomethane as a halogen bond donor catalyst. Org Biomol Chem 2019; 17:9743-9756. [DOI: 10.1039/c9ob02125f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A CBr4 catalyzed simple, mild, and efficient protocol has been developed for the synthesis of 2-substituted benzothiazole from 2-aminothiophenols and N-methylthioamides under solvent free conditions.
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Affiliation(s)
- Imran Kazi
- 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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28
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Sangeetha S, Sekar G. Copper-Catalyzed One-Pot Synthesis of 2-Arylthiochromenones: An in Situ Recycle of Waste Byproduct as Useful Reagent. Org Lett 2018; 21:75-79. [DOI: 10.1021/acs.orglett.8b03508] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Subramani Sangeetha
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Govindasamy Sekar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
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29
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Muneeswara M, Muthukumar A, Sekar G. Dual Role of N-Bromosuccinimide as Oxidant and Succinimide Surrogate in Domino One-Pot Oxidative Amination of Benzyl Alcohols for the Synthesis of α-Imido Ketones. ChemistrySelect 2018. [DOI: 10.1002/slct.201803465] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Madithedu Muneeswara
- Department of Chemistry; Indian Institution of Technology Madras Chennai-600036, Tamilnadu; India
| | - Alagesan Muthukumar
- Department of Chemistry; Indian Institution of Technology Madras Chennai-600036, Tamilnadu; India
| | - Govindasamy Sekar
- Department of Chemistry; Indian Institution of Technology Madras Chennai-600036, Tamilnadu; India
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30
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Liu Y, Zhang Z, Zhang S, Zhang Y, Wang J, Zhang Z. Pd0
-Catalyzed Four-Component Reaction of Aryl Halide, CO, N
-Tosylhydrazone, and Amine. Chem Asian J 2018; 13:3658-3663. [PMID: 30281925 DOI: 10.1002/asia.201801324] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 09/28/2018] [Indexed: 01/07/2023]
Affiliation(s)
- Yiyang Liu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 China
| | - Zhen Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and Department of Applied Chemistry; China Agricultural University; Beijing 100193 China
| | - Songnan Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 China
| | - Yan Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 China
| | - Zhenhua Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and Department of Applied Chemistry; China Agricultural University; Beijing 100193 China
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31
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Ying J, Wang H, Qi X, Peng JB, Wu XF. Gold-Catalyzed Regiospecific Hydration of N-Tosyl Propargylic Amines. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00549] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Ying
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Campus, Hangzhou 310018, People’s Republic of China
| | - Hai Wang
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Campus, Hangzhou 310018, People’s Republic of China
| | - Xinxin Qi
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Campus, Hangzhou 310018, People’s Republic of China
| | - Jin-Bao Peng
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Campus, Hangzhou 310018, People’s Republic of China
| | - Xiao-Feng Wu
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Campus, Hangzhou 310018, People’s Republic of China
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Straβe 29a, 18059 Rostock, Germany
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32
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Kumar Y, Jaiswal Y, Thakur R, Kumar A. A Straightforward Synthesis of α
-Amino Diaryl Ketones from (Hetero)Arylacetonitriles Promoted by N
-Bromosuccinimide. ChemistrySelect 2018. [DOI: 10.1002/slct.201801073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yogesh Kumar
- Department of Chemistry; Indian Institute of Technology Patna; Bihta 801103 Bihar India
| | - Yogesh Jaiswal
- Department of Chemistry; Indian Institute of Technology Patna; Bihta 801103 Bihar India
| | - Rima Thakur
- Department of Chemistry; National Institute of Technology Patna; Patna- 800005 Bihar India
| | - Amit Kumar
- Department of Chemistry; Indian Institute of Technology Patna; Bihta 801103 Bihar India
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33
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Sim J, Jo H, Viji M, Choi M, Jung JA, Lee H, Jung JK. Rapid, Operationally Simple, and Metal-free NBS Mediated One-pot Synthesis of 1,2-Naphthoquinone from 2-Naphthol. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701312] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jaeuk Sim
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Hyeju Jo
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Mayavan Viji
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Minho Choi
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Jin-Ah Jung
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Heesoon Lee
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Jae-Kyung Jung
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
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34
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Mechanistic study on iodine-catalyzed aromatic bromination of aryl ethers by N -Bromosuccinimide. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.10.073] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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35
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Guha S, Kazi I, Nandy A, Sekar G. Role of Lewis-Base-Coordinated Halogen(I) Intermediates in Organic Synthesis: The Journey from Unstable Intermediates to Versatile Reagents. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700916] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Somraj Guha
- Department of Chemistry; Indian Institute of Technology; 600036 Madras Chennai India
| | - Imran Kazi
- Department of Chemistry; Indian Institute of Technology; 600036 Madras Chennai India
| | - Anuradha Nandy
- Department of Chemistry; Indian Institute of Technology; 600036 Madras Chennai India
| | - Govindasamy Sekar
- Department of Chemistry; Indian Institute of Technology; 600036 Madras Chennai India
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36
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More NY, Jeganmohan M. Oxidative Cross-Coupling of Substituted Phenols with Unactivated Aromatics. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700666] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Nagnath Yadav More
- Department of Chemistry; Indian Institute of Science Education and Research; 411021 Pune India
| | - Masilamani Jeganmohan
- Department of Chemistry; Indian Institute of Science Education and Research; 411021 Pune India
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai Tamil Nadu India
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37
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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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38
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Wu W, You C, Yin C, Liu Y, Dong XQ, Zhang X. Enantioselective and Diastereoselective Construction of Chiral Amino Alcohols by Iridium–f-Amphox-Catalyzed Asymmetric Hydrogenation via Dynamic Kinetic Resolution. Org Lett 2017; 19:2548-2551. [DOI: 10.1021/acs.orglett.7b00844] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Weilong Wu
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Cai You
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Congcong Yin
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Yuanhua Liu
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Xiu-Qin Dong
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Xumu Zhang
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen, Guangdong 518055, P. R. China
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39
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Kazi I, Guha S, Sekar G. CBr4 as a Halogen Bond Donor Catalyst for the Selective Activation of Benzaldehydes to Synthesize α,β-Unsaturated Ketones. Org Lett 2017; 19:1244-1247. [DOI: 10.1021/acs.orglett.7b00348] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Imran Kazi
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Somraj Guha
- 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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40
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Miura T, Tanaka T, Zhao Q, Stewart SG, Murakami M. Synthesis of 2-Substituted 2-Amino Ketones by Rhodium-Catalyzed Reaction ofN-Sulfonyl-1,2,3-triazoles with 2-Alkenols. Helv Chim Acta 2017. [DOI: 10.1002/hlca.201600320] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Tomoya Miura
- Department of Synthetic Chemistry and Biological Chemistry; Kyoto University; Katsura Kyoto 615-8510 Japan
| | - Takamasa Tanaka
- Department of Synthetic Chemistry and Biological Chemistry; Kyoto University; Katsura Kyoto 615-8510 Japan
| | - Qiang Zhao
- Department of Synthetic Chemistry and Biological Chemistry; Kyoto University; Katsura Kyoto 615-8510 Japan
| | - Scott G. Stewart
- Department of Synthetic Chemistry and Biological Chemistry; Kyoto University; Katsura Kyoto 615-8510 Japan
| | - Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry; Kyoto University; Katsura Kyoto 615-8510 Japan
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41
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Ramakrishna I, Bhajammanavar V, Mallik S, Baidya M. Advanced Nitroso Aldol Reaction: Metal-Free Cross-Coupling of Anilines with Silyl Enol Ethers en Route to α-Amino Ketones. Org Lett 2017; 19:516-519. [DOI: 10.1021/acs.orglett.6b03686] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Isai Ramakrishna
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
| | - Vinod Bhajammanavar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
| | - Sumitava Mallik
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
| | - Mahiuddin Baidya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
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42
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Hu Y, Wu W, Dong XQ, Zhang X. Efficient access to chiral 1,2-amino alcohols via Ir/f-amphox-catalyzed asymmetric hydrogenation of α-amino ketones. Org Chem Front 2017. [DOI: 10.1039/c7qo00237h] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We successfully developed the iridium/f-amphox-catalyzed asymmetric hydrogenation of α-amino ketones to prepare chiral 1,2-amino alcohols with excellent results.
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Affiliation(s)
- Yang Hu
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
| | - Weilong Wu
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
| | - Xiu-Qin Dong
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
| | - Xumu Zhang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
- Department of Chemistry
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43
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More NY, Jeganmohan M. Solvent-controlled selective synthesis of biphenols and quinones via oxidative coupling of phenols. Chem Commun (Camb) 2017; 53:9616-9619. [DOI: 10.1039/c7cc04829g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A regioselective synthesis of unsymmetrical and symmetrical biphenols and binaphtholsviaoxidative coupling of phenols or naphthols in the presence of K2S2O8in CF3COOH under ambient conditions is described.
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Affiliation(s)
- Nagnath Yadav More
- Department of Chemistry
- Indian Institute of Science Education and Research
- Pune 411021
- India
| | - Masilamani Jeganmohan
- Department of Chemistry
- Indian Institute of Science Education and Research
- Pune 411021
- India
- Department of Chemistry
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44
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Muthukumar A, Sekar G. Zinc-catalyzed chemoselective alkylation of α-keto amides with 2-alkylazaarenes. Org Biomol Chem 2017; 15:691-700. [DOI: 10.1039/c6ob02432g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A zinc-catalyzed C(sp3)–H addition of 2-alkylazaarenes to α-keto amides to furnish azaarene incorporated α-hydroxy amides has been developed for the first time. Chemoselective alkylation of the keto functionality of the α-keto amides in the presence of isolated ketones is the key advantage of this Zn-catalyzed protocol.
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Affiliation(s)
| | - Govindasamy Sekar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai
- India
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45
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Martinez-Erro S, Bermejo Gómez A, Vázquez-Romero A, Erbing E, Martín-Matute B. 2,2-Diiododimedone: a mild electrophilic iodinating agent for the selective synthesis of α-iodoketones from allylic alcohols. Chem Commun (Camb) 2017; 53:9842-9845. [DOI: 10.1039/c7cc04823h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In combination with an iridium catalyst, a new electrophilic iodinating agent enables the synthesis of α-iodocarbonyls from allylic alcohols.
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Affiliation(s)
- Samuel Martinez-Erro
- Department of Organic Chemistry
- Arrhenius Laboratory
- Stockholm University
- 10691 Stockholm
- Sweden
| | - Antonio Bermejo Gómez
- Department of Organic Chemistry
- Arrhenius Laboratory
- Stockholm University
- 10691 Stockholm
- Sweden
| | - Ana Vázquez-Romero
- Department of Organic Chemistry
- Arrhenius Laboratory
- Stockholm University
- 10691 Stockholm
- Sweden
| | - Elis Erbing
- Department of Organic Chemistry
- Arrhenius Laboratory
- Stockholm University
- 10691 Stockholm
- Sweden
| | - Belén Martín-Matute
- Department of Organic Chemistry
- Arrhenius Laboratory
- Stockholm University
- 10691 Stockholm
- Sweden
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46
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Xu S, Wu P, Zhang W. 1,3-Dibromo-5,5-dimethylhydantoin (DBH) mediated one-pot syntheses of α-bromo/amino ketones from alkenes in water. Org Biomol Chem 2016; 14:11389-11395. [PMID: 27858035 DOI: 10.1039/c6ob02200f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
α-Bromo ketones are versatile intermediates of high practical utility. Traditional approaches to these compounds are restricted to a relatively hazardous/complex reagent combination, a long reaction time, the use of non-environmentally friendly solvents, or a limited substrate scope. Herein, we describe the development of a new methodology for the preparation of α-bromo ketones from alkenes using 1,3-dibromo-5,5-dimethylhydantoin (DBH) as a bromine source and an oxidant simultaneously. This easy to carry out two-step one-pot protocol proceeds in water and provides high yield of a great variety of α-bromo ketones. Addition of an amine to the intermediate α-bromo ketone further enables the preparation of α-amino ketones in a one-pot sequence.
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Affiliation(s)
- Senhan Xu
- School of Pharmacy, Fudan University, Shanghai, China.
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47
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Liang S, Zeng CC, Tian HY, Sun BG, Luo XG, Ren FZ. Electrochemically Oxidative α-C–H Functionalization of Ketones: A Cascade Synthesis of α-Amino Ketones Mediated by NH4I. J Org Chem 2016; 81:11565-11573. [DOI: 10.1021/acs.joc.6b01595] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Sen Liang
- Beijing
Advanced Innovation Center for Food Nutrition and Human Health, School
of Food and Chemical Engineering, Beijing Technology and Business University, Beijing100048, China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing100083, China
| | - Cheng-Chu Zeng
- Beijing
Advanced Innovation Center for Food Nutrition and Human Health, School
of Food and Chemical Engineering, Beijing Technology and Business University, Beijing100048, China
- College of Life Science & Bioengineering, Beijing University of Technology, Beijing100124, China
| | - Hong-Yu Tian
- Beijing
Advanced Innovation Center for Food Nutrition and Human Health, School
of Food and Chemical Engineering, Beijing Technology and Business University, Beijing100048, China
| | - Bao-Guo Sun
- Beijing
Advanced Innovation Center for Food Nutrition and Human Health, School
of Food and Chemical Engineering, Beijing Technology and Business University, Beijing100048, China
| | - Xu-Gang Luo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing100083, China
| | - Fa-zheng Ren
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing100083, China
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48
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Dighe SU, Mukhopadhyay S, Priyanka K, Batra S. Metal-Free Oxidative Nitration of α-Carbon of Carbonyls Leads to One-Pot Synthesis of Thiohydroximic Acids from Acetophenones. Org Lett 2016; 18:4190-3. [DOI: 10.1021/acs.orglett.6b01807] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Shashikant U. Dighe
- Medicinal
and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Sushobhan Mukhopadhyay
- Medicinal
and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Kumari Priyanka
- Medicinal
and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Sanjay Batra
- Medicinal
and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
- Academy
of Scientific
and Innovative Research, New Delhi 110025, India
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49
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Saikia I, Borah AJ, Phukan P. Use of Bromine and Bromo-Organic Compounds in Organic Synthesis. Chem Rev 2016; 116:6837-7042. [PMID: 27199233 DOI: 10.1021/acs.chemrev.5b00400] [Citation(s) in RCA: 283] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Bromination is one of the most important transformations in organic synthesis and can be carried out using bromine and many other bromo compounds. Use of molecular bromine in organic synthesis is well-known. However, due to the hazardous nature of bromine, enormous growth has been witnessed in the past several decades for the development of solid bromine carriers. This review outlines the use of bromine and different bromo-organic compounds in organic synthesis. The applications of bromine, a total of 107 bromo-organic compounds, 11 other brominating agents, and a few natural bromine sources were incorporated. The scope of these reagents for various organic transformations such as bromination, cohalogenation, oxidation, cyclization, ring-opening reactions, substitution, rearrangement, hydrolysis, catalysis, etc. has been described briefly to highlight important aspects of the bromo-organic compounds in organic synthesis.
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Affiliation(s)
| | - Arun Jyoti Borah
- Department of Chemistry, Gauahti University , Guwahati-781014, Assam, India
| | - Prodeep Phukan
- Department of Chemistry, Gauahti University , Guwahati-781014, Assam, India
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50
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Svogie AL, Isaacs M, Hoppe HC, Khanye SD, Veale CGL. Indolyl-3-ethanone-α-thioethers: A promising new class of non-toxic antimalarial agents. Eur J Med Chem 2016; 114:79-88. [PMID: 26974377 DOI: 10.1016/j.ejmech.2016.02.056] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 02/15/2016] [Accepted: 02/24/2016] [Indexed: 11/28/2022]
Abstract
The success of chemotherapeutics in easing the burden of malaria is under continuous threat from ever-evolving parasite resistance, including resistance to artemisinin combination therapies. Therefore, the discovery of new classes of antimalarials which inhibit new biological targets is imperative to controlling malaria. Accordingly, we report here the discovery of indolyl-3-ethanone-α-thioethers, a new class of antimalarial compounds with encouraging activity. Synthesis of a focused library of compounds revealed important insight into the SAR of this class of compounds, including critical information regarding the position and chemical nature of substituents on both the thiophenol and indole rings. This investigation ultimately led to the discovery of two hit compounds (16 and 27) which exhibited nano molar in vitro antimalarial activity coupled to no observable toxicity against a HeLa cell line.
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Affiliation(s)
| | - Michelle Isaacs
- Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa
| | - Heinrich C Hoppe
- Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa
| | - Setshaba D Khanye
- Department of Chemistry, Centre for Chemico and Biomedical Research, Rhodes University, Grahamstown, 6140, South Africa
| | - Clinton G L Veale
- Faculty of Pharmacy, Rhodes University, Grahamstown, 6140, South Africa.
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