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Van Kerrebroeck R, Horsten T, Stevens CV. BROMIDE OXIDATION: A SAFE STRATEGY FOR ELECTROPHILIC BROMINATIONS. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200310] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Tomas Horsten
- Ghent University: Universiteit Gent Green Chemistry and Technology BELGIUM
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2
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Seki M. Development of Novel and Efficient Catalytic Systems for C-H Activation and Application to Practical Synthesis of Pharmaceuticals. J SYN ORG CHEM JPN 2022. [DOI: 10.5059/yukigoseikyokaishi.80.357] [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]
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3
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Recent development of biomimetic halogenation inspired by vanadium dependent haloperoxidase. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214404] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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4
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Kaur K, Srivastava S. Artificial sugar saccharin and its derivatives: role as a catalyst. RSC Adv 2020; 10:36571-36608. [PMID: 35517977 PMCID: PMC9057081 DOI: 10.1039/d0ra05974a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 09/24/2020] [Indexed: 12/28/2022] Open
Abstract
The primary objective of this review was to demonstrate the significance of artificial sugar saccharin and its derivatives as catalysts for a wide variety of organic transformations. The application of saccharin and its derivatives represents a greener and superior catalytic approach for reactions. In particular, we were interested in bringing together the literature pertaining to these saccharin derivatives from a catalysis perspective. The present review reports synthesis of saccharin and its derivatives such as saccharin-N-sulfonic acid, sodium saccharin, N-halo saccharin, saccharin lithium-bromide, N-formyl saccharin, N-acyl saccharin, N-nitrosaccharin, N-SCF3 saccharin, N-fluorosultam, N-phenylselenosaccharin, N-thiocyanatosaccharin palladium saccharin, DMAP-saccharin, and [Bmim]Sac. This catalytic application of saccharin and its derivatives includes reactions such as the Biginelli reaction, Paal-Knorr pyrrole synthesis, azo-coupling reaction, halogenations, domino Knoevenagel, Michael, deoximation reaction, catalytic condensation, functional group protection and oxidation etc. Also, these saccharin derivatives act as a source of CO, NH2, SCN, SCF3 and nitro groups. We reported all the available data on saccharin and its derivatives acting as a catalyst from 1957 to date.
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Affiliation(s)
- Kamalpreet Kaur
- Department of Applied Sciences, National Institute of Technology, Delhi NILERD Campus, Sec A-7, Narela Delhi 110040 India
| | - Suman Srivastava
- Department of Applied Sciences, National Institute of Technology, Delhi NILERD Campus, Sec A-7, Narela Delhi 110040 India
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5
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Li H, Liu S, Lystrom L, Kilina S, Sun W. Improving triplet excited-state absorption and lifetime of cationic iridium(III) complexes by extending π-conjugation of the 2-(2-quinolinyl)quinoxaline ligand. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112609] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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6
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Wang CM, Du JY, Zhang JY, Tang KX, Gao TH, Xu YG, Sun LP. Regioselective bromination of aryl ureas with Phenyliodine(III) diacetate and potassium bromide. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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7
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Imanzadeh GK, Zamanloo MR, Eskandari H, Shayesteh K. A New Ring Bromination Method for Aromatic Compounds under Solvent-Free Conditions with Nbs/Al2O3. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823406776330657] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Alumina supported N-bromosuccinimide was found to be an efficient reagent for ring bromination of a number of aromatic compounds under solvent-free conditions. In the absence of the alumina the reactions are slow and some of the substrates are recovered unchanged. Under the reaction conditions aromatic oximes are converted into the corresponding carbonyl compounds. The method is simple, safe and rapid.
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Affiliation(s)
| | | | | | - Keyvan Shayesteh
- College of Chemistry, Mohagheghe Ardebili University, Ardebil 179, I.R. Iran
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8
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Ghorpade PV, Pethsangave DA, Some S, Shankarling GS. Graphene Oxide Promoted Oxidative Bromination of Anilines and Phenols in Water. J Org Chem 2018; 83:7388-7397. [DOI: 10.1021/acs.joc.8b00188] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Prashant Vasantrao Ghorpade
- Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai 400019, India
| | | | - Surajit Some
- Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai 400019, India
| | - Ganapati Subray Shankarling
- Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai 400019, India
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9
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10
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Natalio F, Wiese S, Brandt W, Wessjohann L. Reconstitution of Vanadium Haloperoxidase's Catalytic Activity by Boric Acid-Towards a Potential Biocatalytic Role of Boron. Chemistry 2017; 23:4973-4980. [PMID: 28248430 DOI: 10.1002/chem.201605230] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 02/22/2017] [Indexed: 11/09/2022]
Abstract
Boron's unusual properties inspired major advances in chemistry. In nature, the existence and importance of boron has been fairly explored (e.g. bacterial signaling, plant development) but its role as biological catalyst was never reported. Here, we show that boric acid [B(OH)3 ] can restore chloroperoxidase activity of Curvularia inaequalis recombinant apo-haloperoxidase's (HPO) in the presence of hydrogen peroxide and chloride ions. Molecular modeling and semi-empirical PM7 calculations support a thermodynamically highly favored (bio)catalytic mechanism similarly to vanadium haloperoxidases (V-HPO) in which [B(OH)3 ] is assumedly located in apo-HPO's active site and a monoperoxyborate [B(OH)3 (OOH)- ] intermediate is formed and stabilized by interaction with specific active site amino acids leading ultimately to the formation of HOCl. Thus, B(OH)3 -HPO provides the first evidence towards the future exploitation of boron's role in biological systems.
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Affiliation(s)
- Filipe Natalio
- Kimmel Center for Archaeological Science, Weizmann Institute of Science, Rehovot, 76100, Israel.,Institut für Chemie-Anorganische Chemie, Naturwissenschaftliche Fakultät II-Chemie, Physik und Mathematik, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Straße 2, 06120, Halle, Germany
| | - Stefanie Wiese
- Institut für Chemie-Anorganische Chemie, Naturwissenschaftliche Fakultät II-Chemie, Physik und Mathematik, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Straße 2, 06120, Halle, Germany
| | - Wolfgang Brandt
- Leibniz Institute of Plant Biochemistry, Department of Bioorganic Chemistry, Weinberg 3, Halle, Germany
| | - Ludger Wessjohann
- Leibniz Institute of Plant Biochemistry, Department of Bioorganic Chemistry, Weinberg 3, Halle, Germany
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11
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Sun M, Chen X, Zhang L, Sun W, Wang Z, Guo P, Li YM, Yang XJ. Efficient, versatile and practical palladium-catalyzed highly regioselective ortho-halogenation of azoxybenzenes. Org Biomol Chem 2016; 14:323-9. [DOI: 10.1039/c5ob02153g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient and practical strategy of regio-selective ortho-halogenation of azoxybenzenes with NXS in the presence of palladium catalysts has been developed in good to excellent yields.
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Affiliation(s)
- Meng Sun
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- Department of Chemistry & Materials Science
- Northwest University
- Xi'an 710127
- P. R. China
| | - Xiangxiang Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- Department of Chemistry & Materials Science
- Northwest University
- Xi'an 710127
- P. R. China
| | - Liang Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- Department of Chemistry & Materials Science
- Northwest University
- Xi'an 710127
- P. R. China
| | - Wei Sun
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- Department of Chemistry & Materials Science
- Northwest University
- Xi'an 710127
- P. R. China
| | - Zhe Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- Department of Chemistry & Materials Science
- Northwest University
- Xi'an 710127
- P. R. China
| | - Peiyu Guo
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- Department of Chemistry & Materials Science
- Northwest University
- Xi'an 710127
- P. R. China
| | - Ya-Min Li
- Faculty of Life Science and Technology
- Kunming University of Science and Technology
- Kunming 650500
- P. R. China
| | - Xiao-Juan Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- Department of Chemistry & Materials Science
- Northwest University
- Xi'an 710127
- P. R. China
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12
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Shepherd SA, Karthikeyan C, Latham J, Struck AW, Thompson ML, Menon BRK, Styles MQ, Levy C, Leys D, Micklefield J. Extending the biocatalytic scope of regiocomplementary flavin-dependent halogenase enzymes. Chem Sci 2015; 6:3454-3460. [PMID: 29511510 PMCID: PMC5659210 DOI: 10.1039/c5sc00913h] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 04/09/2015] [Indexed: 11/21/2022] Open
Abstract
Flavin-dependent halogenases are potentially valuable biocatalysts for the regioselective halogenation of aromatic compounds. These enzymes, utilising benign inorganic halides, offer potential advantages over traditional non-enzymatic halogenation chemistry that often lacks regiocontrol and requires deleterious reagents. Here we extend the biocatalytic repertoire of the tryptophan halogenases, demonstrating how these enzymes can halogenate a range of alternative aryl substrates. Using structure guided mutagenesis we also show that it is possible to alter the regioselectivity as well as increase the activity of the halogenases with non-native substrates including anthranilic acid; an important intermediate in the synthesis and biosynthesis of pharmaceuticals and other valuable products.
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Affiliation(s)
- Sarah A Shepherd
- School of Chemistry , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK .
- Manchester Institute of Biotechnology , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK
| | - Chinnan Karthikeyan
- School of Chemistry , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK .
- Manchester Institute of Biotechnology , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK
| | - Jonathan Latham
- School of Chemistry , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK .
- Manchester Institute of Biotechnology , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK
| | - Anna-Winona Struck
- School of Chemistry , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK .
- Manchester Institute of Biotechnology , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK
| | - Mark L Thompson
- School of Chemistry , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK .
- Manchester Institute of Biotechnology , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK
| | - Binuraj R K Menon
- School of Chemistry , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK .
- Manchester Institute of Biotechnology , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK
| | - Matthew Q Styles
- School of Chemistry , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK .
- Manchester Institute of Biotechnology , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK
| | - Colin Levy
- Manchester Institute of Biotechnology , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK
- Faculty of Life Sciences , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK
| | - David Leys
- Manchester Institute of Biotechnology , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK
- Faculty of Life Sciences , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK
| | - Jason Micklefield
- School of Chemistry , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK .
- Manchester Institute of Biotechnology , The University of Manchester , 131 Princess Street , Manchester , M1 7DN , UK
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13
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Patil VV, Shankarling GS. Nonanebis(peroxoic acid): a stable peracid for oxidative bromination of aminoanthracene-9,10-dione. Beilstein J Org Chem 2014; 10:921-8. [PMID: 24991241 PMCID: PMC4077418 DOI: 10.3762/bjoc.10.90] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 04/01/2014] [Indexed: 12/01/2022] Open
Abstract
A new protocol for the oxidative bromination of aminoanthracene-9,10-dione, which is highly deactivated towards the electrophilic substitution is investigated. The peracid, nonanebis(peroxoic acid), possesses advantages such as better stability at room temperature, it is easy to prepare and non-shock sensitiv as compared to the conventional peracids. The present protocol has a broad scope for the bromination of various substituted and unsubstituted aminoanthracene-9,10-diones.
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Affiliation(s)
- Vilas Venunath Patil
- Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai - 400019, India. Tel.: 91-22-33612708
| | - Ganapati Subray Shankarling
- Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai - 400019, India. Tel.: 91-22-33612708
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14
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Zhang Z, Qian J, Tian Q, Liu T, Liu Q, Zhang G. Oxidative Nuclear Bromination of Substituted 4-Pyridones Using Pyridinium Bromochromate. SYNTHETIC COMMUN 2013. [DOI: 10.1080/00397911.2013.834363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Zhiguo Zhang
- a Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang , Henan , China
| | - Jingjing Qian
- a Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang , Henan , China
| | - Qing Tian
- a Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang , Henan , China
| | - Tongxin Liu
- a Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang , Henan , China
| | - Qingfeng Liu
- a Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang , Henan , China
| | - Guisheng Zhang
- a Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang , Henan , China
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15
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Diazotization-bromination of aromatic amines using polymer-supported bromide via Sandmeyer-type reaction. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0330-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Davies SG, Fletcher AM, Lee JA, Lorkin TJ, Roberts PM, Thomson JE. A diastereodivergent strategy for the asymmetric syntheses of (−)-martinellic acid and (−)-4-epi-martinellic acid. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.09.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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Reddy KR, Rajanna KC, Uppalaiah K, Ramgopal S. Cetyltrimethylammonium Bromide as an Efficient Catalyst for Regioselective Bromination of Alkoxy Naphthalenes with Trimethyl Benzyl Ammonium Tribromide: Synthetic and Kinetic Approach. INT J CHEM KINET 2013. [DOI: 10.1002/kin.20821] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- K. Rajendar Reddy
- Department of Chemistry; Osmania University; Hyderabad 500 007 India
| | - K. C. Rajanna
- Department of Chemistry; Osmania University; Hyderabad 500 007 India
| | - K. Uppalaiah
- Department of Chemistry; Osmania University; Hyderabad 500 007 India
| | - S. Ramgopal
- Department of Chemistry; Osmania University; Hyderabad 500 007 India
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Traskovskis K, Mihailovs I, Tokmakovs A, Jurgis A, Kokars V, Rutkis M. Triphenyl moieties as building blocks for obtaining molecular glasses with nonlinear optical activity. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm30861d] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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19
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Hossein M, Zahra K. Synthesis and Application of Poly(diallyldimethylammonium tribromide) as a Novel Polymeric Brominating Agent. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090367] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Primik MF, Göschl S, Jakupec MA, Roller A, Keppler BK, Arion VB. Structure−Activity Relationships of Highly Cytotoxic Copper(II) Complexes with Modified Indolo[3,2-c]quinoline Ligands. Inorg Chem 2010; 49:11084-95. [DOI: 10.1021/ic101633z] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael F. Primik
- Institute of Inorganic Chemistry, University of Vienna, Währinger Str. 42, A-1090 Vienna, Austria
| | - Simone Göschl
- Institute of Inorganic Chemistry, University of Vienna, Währinger Str. 42, A-1090 Vienna, Austria
| | - Michael A. Jakupec
- Institute of Inorganic Chemistry, University of Vienna, Währinger Str. 42, A-1090 Vienna, Austria
| | - Alexander Roller
- Institute of Inorganic Chemistry, University of Vienna, Währinger Str. 42, A-1090 Vienna, Austria
| | - Bernhard K. Keppler
- Institute of Inorganic Chemistry, University of Vienna, Währinger Str. 42, A-1090 Vienna, Austria
| | - Vladimir B. Arion
- Institute of Inorganic Chemistry, University of Vienna, Währinger Str. 42, A-1090 Vienna, Austria
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Alinezhad H, Tavakkoli SM, Salehian F. Efficient, Rapid, and Regioselective Bromination of Phenols and Anilines withN-Bromosaccharin Using Tungstophosphoric Acid as a Heterogeneous Recyclable Catalyst. SYNTHETIC COMMUN 2010. [DOI: 10.1080/00397910903395268] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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Sharma R, Sharma C. Oxidative bromination reaction using Cu2+-perfluorophthalocyanine-immobilized silica gel catalyst under mild reaction conditions. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.06.067] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Venkateshwarlu G, Premalatha A, Chakradhar A, Rajanna K, Prakash P. Peroxide/Potassium Iodide Redox Systems forin situOxyiodination of Organic Compounds under Liquid-Phase and Solvent-Free Conditions. Helv Chim Acta 2010. [DOI: 10.1002/hlca.200900188] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Podgoršek A, Zupan M, Iskra J. Oxidative Halogenierungen mit umweltschonenden Oxidationsmitteln: Sauerstoff und Wasserstoffperoxid. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200901223] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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25
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Podgoršek A, Zupan M, Iskra J. Oxidative Halogenation with “Green” Oxidants: Oxygen and Hydrogen Peroxide. Angew Chem Int Ed Engl 2009; 48:8424-50. [DOI: 10.1002/anie.200901223] [Citation(s) in RCA: 310] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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The discovery and unique pharmacological profile of RO4938581 and RO4882224 as potent and selective GABAA alpha5 inverse agonists for the treatment of cognitive dysfunction. Bioorg Med Chem Lett 2009; 19:5940-4. [PMID: 19762240 DOI: 10.1016/j.bmcl.2009.08.053] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Revised: 08/10/2009] [Accepted: 08/11/2009] [Indexed: 11/22/2022]
Abstract
Lead optimisation of the imidazo[1,5-a][1,2,4]-triazolo[1,5-d][1,4]benzodiazepine class led to the identification of two clinical leads [RO4882224 (11) and RO4938581 (44)] functioning as novel potent and selective GABAA alpha5 inverse agonists. The unique pharmacological profiles and optimal pharmacokinetic profiles resulted in in vivo activity in selected cognition models.
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Podgoršek A, Stavber S, Zupan M, Iskra J. Environmentally benign electrophilic and radical bromination ‘on water’: H2O2–HBr system versus N-bromosuccinimide. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.03.034] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Chakradhar A, Roopa R, Rajanna KC, Saiprakash PK. Vilsmeier–Haack Bromination of Aromatic Compounds with KBr and N-Bromosuccinimide Under Solvent-Free Conditions. SYNTHETIC COMMUN 2009. [DOI: 10.1080/00397910802594268] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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29
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Bennett MA, Bhargava SK, Mirzadeh N, Privér SH, Wagler J, Willis AC. Synthesis and interconversions of digold(i), tetragold(i), digold(ii), gold(i)–gold(iii) and digold(iii) complexes of fluorine-substituted aryl carbanions. Dalton Trans 2009:7537-51. [DOI: 10.1039/b906769h] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Menini L, da Cruz Santos J, Gusevskaya E. Copper-Catalyzed Oxybromination and Oxychlorination of Primary Aromatic Amines Using LiBr or LiCl and Molecular Oxygen. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800223] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Tajik H, Mohammadpoor-Baltork I, Hassan-zadeh P, Rafiee Rashtabadi H. A convenient and selective method for the para-bromination of aromatic compounds with potassium bromide in the presence of poly(4-vinylpyridine)-supported peroxodisulfate in nonaqueous solution. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2007. [DOI: 10.1134/s1070428007090047] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Hattori Y, Yamamoto H, Ando H, Kondoh H, Asano T, Kirihata M, Yamaguchi Y, Wakamiya T. Synthesis and evaluation as MRI probe of the trifluoromethylated p-boronophenylalanine and its alcohol derivative. Bioorg Med Chem 2007; 15:2198-205. [PMID: 17241787 DOI: 10.1016/j.bmc.2006.12.043] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2006] [Revised: 12/06/2006] [Accepted: 12/07/2006] [Indexed: 11/25/2022]
Abstract
Boron-neutron capture therapy (BNCT) and magnetic resonance imaging (MRI) are quite attractive techniques for treatment and diagnosis of cancer, respectively. In order to develop practical tools for BNCT and MRI, novel compounds containing both the trifluoromethyl group and 10B atom in a single molecule were designed. In the present study, p-boronophenylalanine and p-boronophenylalaninol with the trifluoromethyl group were synthesized, and 19F NMR measurements of these compounds were carried out.
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Affiliation(s)
- Yoshihide Hattori
- Faculty of Science and Technology, Kinki University, Higashi-osaka, Osaka 577-8502, Japan
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35
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Kidwai M, Singhal K, Singhal P. One-Pot Heterocondensation for Benzoxazinone Derivatives Using Sodium Perborate as Catalyst. HETEROCYCLES 2007. [DOI: 10.3987/com-07-11046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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37
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Das B, Venkateswarlu K, Krishnaiah M, Holla H. An efficient, rapid and regioselective nuclear bromination of aromatics and heteroaromatics with NBS using sulfonic-acid-functionalized silica as a heterogeneous recyclable catalyst. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.10.029] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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38
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Preparation, characterisation of molybdophosphoric and tungstophosphoric acid intercalated zinc aluminium hydrotalcite-like compounds and their catalytic evaluation towards the oxidative bromination of phenol. CATAL COMMUN 2006. [DOI: 10.1016/j.catcom.2006.03.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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39
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Kim YH, Park MY, Yang SG. Practical and Regioselective Halogenations of Aromatic Compounds Using Tetrabutylammonium Peroxydisulfate. PHOSPHORUS SULFUR 2006. [DOI: 10.1080/10426500590911395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Yong Hae Kim
- a School of Molecular Science, Department of Chemistry, Korea Advanced Institute of Science and Technology , Daejon, Korea
| | - Min Young Park
- a School of Molecular Science, Department of Chemistry, Korea Advanced Institute of Science and Technology , Daejon, Korea
| | - Seung Gak Yang
- a School of Molecular Science, Department of Chemistry, Korea Advanced Institute of Science and Technology , Daejon, Korea
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40
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Raju T, Kulangiappar K, Anbu Kulandainathan M, Uma U, Malini R, Muthukumaran A. Site directed nuclear bromination of aromatic compounds by an electrochemical method. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.04.152] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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41
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Kalyani D, Dick AR, Anani WQ, Sanford MS. A Simple Catalytic Method for the Regioselective Halogenation of Arenes. Org Lett 2006; 8:2523-6. [PMID: 16737304 DOI: 10.1021/ol060747f] [Citation(s) in RCA: 314] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This paper describes a mild palladium-catalyzed method for the regioselective chlorination, bromination, and iodination of arene C-H bonds using N-halosuccinimides as oxidants. These transformations have been applied to a wide array of substrates and can provide products that are complementary to those obtained via conventional electrophilic aromatic substitution reactions. [reaction: see text]
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Affiliation(s)
- Dipannita Kalyani
- University of Michigan, Department of Chemistry, 930 North University Avenue, Ann Arbor, MI 48109-1055, USA
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42
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Zhang G, Liu R, Xu Q, Ma L, Liang X. Sodium Nitrite-Catalyzed Oxybromination of Aromatic Compounds and Aryl Ketones with a Combination of Hydrobromic Acid and Molecular Oxygen under Mild Conditions. Adv Synth Catal 2006. [DOI: 10.1002/adsc.200505495] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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43
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Sadygov OA, Alimardanov KM, Chalabiev CA. Induced Bromination of Aromatic Hydrocarbons by Alkali Metals Bromides and Sodium Hypochlorite. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2005. [DOI: 10.1007/s11178-006-0010-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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Kavala V, Naik S, Patel BK. A new recyclable ditribromide reagent for efficient bromination under solvent free condition. J Org Chem 2005; 70:4267-71. [PMID: 15903299 DOI: 10.1021/jo050059u] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
1,2-Dipyridiniumditribromide-ethane (DPTBE) has been synthesized and explored as a new efficient brominating agent. The crystalline ditribromide reagent is stable for months and acts as a safe source of bromine requiring just 0.5 equiv for complete bromination. It has high active bromine content per molecule and shows a remarkable reactivity compared to other tribromide reagents toward various substrates by just grinding the reagent and substrates in a porcelain mortar at room temperature. No organic solvent has been used during any stage of the reaction for substrates giving product as solid. Product can easily be isolated by just washing the highly water soluble 1,2-dipyridiniumdibromide-ethane (DPDBE) from the brominated product. The spent reagent can be recovered, regenerated, and reused without any significant loss.
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Affiliation(s)
- Veerababurao Kavala
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam, India
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45
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Kuethe JT, Wong A, Qu C, Smitrovich J, Davies IW, Hughes DL. Synthesis of 5-Substituted-1H-indol-2-yl-1H-quinolin-2-ones: A Novel Class of KDR Kinase Inhibitors. J Org Chem 2005; 70:2555-67. [PMID: 15787543 DOI: 10.1021/jo0480545] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] A number of approaches for the synthesis of the 1H-indol-2-yl-1H-quinolin-2-one ring system found in the potent and selective KDR kinase inhibitor 1 are described. The preparation and reaction of trimethylsilylnitrobenzene 26 with 2-methoxy-3-quinolinecarboxaldehyde 28 afforded alcohol 30, which was the key intermediate for the preparation of the target compounds. Conversion of alcohol 30 to either nitroketone 36 or nitrostyrene 45 set the stage for reductive cyclization and the formation of indole 25. The quinolin-2-one functionality was unmasked in the last step to provide compound 1 in 56-60% overall yield from readily available starting materials.
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Affiliation(s)
- Jeffrey T Kuethe
- Department of Process Research, Merck & Co., Inc., P.O. Box 2000, Rahway, New Jersey 07065, USA.
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46
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Park MY, Yang SG, Jadhav V, Kim YH. Practical and regioselective brominations of aromatic compounds using tetrabutylammonium peroxydisulfate. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.04.112] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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47
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Karlsson HJ, Bergqvist MH, Lincoln P, Westman G. Syntheses and DNA-binding studies of a series of unsymmetrical cyanine dyes: structural influence on the degree of minor groove binding to natural DNA. Bioorg Med Chem 2004; 12:2369-84. [PMID: 15080934 DOI: 10.1016/j.bmc.2004.02.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2003] [Accepted: 02/03/2004] [Indexed: 11/28/2022]
Abstract
Twelve crescent-shaped unsymmetrical dyes have been synthesized and their interactions with DNA have been investigated by spectroscopic methods. A new facile synthetic route to this type of cyanine dyes has been developed, involving the preparation of 6-substituted 2-thiomethyl-benzothiazoles in good yields. The new dyes are analogues to the minor groove binding unsymmetrical cyanine dye, BEBO, recently reported by us. In this dye, the structure of the known intercalating cyanine dye BO was extended with a 6-methylbenzothiazole substituent. Herein we further investigate the role of the extending benzazole heterocycle, as well as of the pyridine or quinoline moiety of the cyanine chromophore, for the binding mode of these crescent-shaped dyes to calf thymus DNA. Flow LD and CD studies of the 12 dyes show that the extent of minor groove binding to mixed sequence DNA varies significantly between the dyes. We find that hydrophobicity and size are the crucial parameters for recognition of the minor groove. The relatively high fluorescence quantum yield of many of these cyanines bound to DNA, combined with their absorption at long wavelengths, may render them useful in biological applications. In particular, two of the benzoxazole containing dyes BOXTO and 2-BOXTO show a high degree of minor groove binding and quantum yields of 0.52 and 0.32, respectively, when bound to DNA.
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Affiliation(s)
- H Jonas Karlsson
- Department of Chemistry and Bioscience, Chalmers University of Technology, S-412 96 Gothenburg, Sweden.
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48
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Synthesis and Application of γ-Picolinium Bromochromate as a New, Mild and Regioselective Reagent for Bromination of Active Aromatic Compounds. B KOREAN CHEM SOC 2003. [DOI: 10.5012/bkcs.2003.24.9.1379] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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49
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Firouzabadi H, Iranpoor N, Amani K. Heteropoly acid cesium salt/cetyltrimethylammonium bromide a catalytic heterogeneous system which highly controls regioselective bromination of aromatic compounds with bromine. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s1381-1169(02)00589-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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50
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Cary JM, Moore JS. Hydrogen bond-stabilized helix formation of a m-phenylene ethynylene oligomer. Org Lett 2002; 4:4663-6. [PMID: 12489955 DOI: 10.1021/ol0270982] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] Incorporation of a single hydrogen bonded beta-turn mimic in the backbone of a m-phenylene ethynylene oligomer is shown to affect the thermodynamic properties of the folding reaction. Oligomers 1 and 2 both undergo solvophobic helix formation, but hydrogen bonded oligomer 1 was found to form a more stable helix with a higher tolerance to solvent denaturation than isomeric, non-hydrogen bonded oligomer 2.
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Affiliation(s)
- Jennifer M Cary
- Department of Chemistry and Materials Science, The University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
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