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Khatua H, Das SK, Roy S, Chattopadhyay B. Dual Reactivity of 1,2,3,4‐Tetrazole: Manganese‐Catalyzed Click Reaction and Denitrogenative Annulation. Angew Chem Int Ed Engl 2020; 60:304-312. [DOI: 10.1002/anie.202009078] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/01/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Hillol Khatua
- Division of Molecular Synthesis & Drug Discovery Centre of Bio-Medical Research (CBMR) SGPGIMS Campus Raebareli Road Lucknow 226014 U.P. India
| | - Sandip Kumar Das
- Division of Molecular Synthesis & Drug Discovery Centre of Bio-Medical Research (CBMR) SGPGIMS Campus Raebareli Road Lucknow 226014 U.P. India
| | - Satyajit Roy
- Division of Molecular Synthesis & Drug Discovery Centre of Bio-Medical Research (CBMR) SGPGIMS Campus Raebareli Road Lucknow 226014 U.P. India
| | - Buddhadeb Chattopadhyay
- Division of Molecular Synthesis & Drug Discovery Centre of Bio-Medical Research (CBMR) SGPGIMS Campus Raebareli Road Lucknow 226014 U.P. India
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2
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Khatua H, Das SK, Roy S, Chattopadhyay B. Dual Reactivity of 1,2,3,4‐Tetrazole: Manganese‐Catalyzed Click Reaction and Denitrogenative Annulation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Hillol Khatua
- Division of Molecular Synthesis & Drug Discovery Centre of Bio-Medical Research (CBMR) SGPGIMS Campus Raebareli Road Lucknow 226014 U.P. India
| | - Sandip Kumar Das
- Division of Molecular Synthesis & Drug Discovery Centre of Bio-Medical Research (CBMR) SGPGIMS Campus Raebareli Road Lucknow 226014 U.P. India
| | - Satyajit Roy
- Division of Molecular Synthesis & Drug Discovery Centre of Bio-Medical Research (CBMR) SGPGIMS Campus Raebareli Road Lucknow 226014 U.P. India
| | - Buddhadeb Chattopadhyay
- Division of Molecular Synthesis & Drug Discovery Centre of Bio-Medical Research (CBMR) SGPGIMS Campus Raebareli Road Lucknow 226014 U.P. India
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3
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Sahoo SR, Sarkar D. Revisiting the Addition of in-situ Nucleophiles to Allenic Ketones: An Entry Towards Synthesis of Benzodioxins. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sushree Ranjan Sahoo
- Department of Chemistry; National Institute of Technology; Pin-769008 Rourkela Odisha India
| | - Debayan Sarkar
- Department of Chemistry; National Institute of Technology; Pin-769008 Rourkela Odisha India
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4
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Baykal A, Plietker B. A Bu
4
N[Fe(CO)
3
(NO)]‐Catalyzed Hemetsberger–Knittel Indole Synthesis. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901864] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Aslihan Baykal
- Institut für Organische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Bernd Plietker
- Institut für Organische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
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5
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Jadala C, Prasad B, Prasanthi AVG, Shankaraiah N, Kamal A. Transition metal-free one-pot synthesis of substituted pyrroles by employing aza-Wittig reaction. RSC Adv 2019; 9:30659-30665. [PMID: 35529397 PMCID: PMC9072206 DOI: 10.1039/c9ra06778g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 09/12/2019] [Indexed: 11/21/2022] Open
Abstract
A mild and metal-free one-pot synthetic strategy has been developed for the construction of substituted pyrroles by employing aza-Wittig reaction from a unique and unexplored combination of chromones and phenacyl azides. This method does not compromise the diverse substitutions on both the phenacyl azides and chromones. The merits of this method are wide substrate scope, easy functionalization, short reaction time, operationally simple, and higher yields. Moreover, this method is amenable for the generation of a library of key pyrrole building blocks. A mild and metal-free one-pot synthetic strategy has been developed for the construction of substituted pyrroles by employing aza-Wittig reaction from a unique and unexplored combination of chromones and phenacyl azides.![]()
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Affiliation(s)
- Chetna Jadala
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad-500 037 India
| | - Budaganaboyina Prasad
- Medicinal Chemistry & Pharmacology, CSIR-Indian Institute of Chemical Technology Hyderabad 500 007 India
| | - A V G Prasanthi
- Medicinal Chemistry & Pharmacology, CSIR-Indian Institute of Chemical Technology Hyderabad 500 007 India
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad-500 037 India
| | - Ahmed Kamal
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad-500 037 India .,Medicinal Chemistry & Pharmacology, CSIR-Indian Institute of Chemical Technology Hyderabad 500 007 India .,School of Pharmaceutical Education and Research (SPER), Jamia Hamdard New Delhi 110062 India
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6
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Harisha MB, Dhanalakshmi P, Suresh R, Kumar RR, Muthusubramanian S, Bhuvanesh N. TMSOTf-Catalysed Synthesis of 2,4,5-Trisubstituted Imidazoles from Vinyl Azides and Nitriles. ChemistrySelect 2019. [DOI: 10.1002/slct.201801543] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mysore Bhyrappa Harisha
- Department of Organic Chemistry; School of Chemistry; Madurai Kamaraj university, Madurai -; 625 021 Tamil Nadu India
- Advinus Therapeutics Limited; A TATA Enterprise; Bangalore - 560 058 India
| | - Pandi Dhanalakshmi
- Department of Organic Chemistry; School of Chemistry; Madurai Kamaraj university, Madurai -; 625 021 Tamil Nadu India
| | - Rajendran Suresh
- Department of Organic Chemistry; School of Chemistry; Madurai Kamaraj university, Madurai -; 625 021 Tamil Nadu India
| | - Raju Ranjith Kumar
- Department of Organic Chemistry; School of Chemistry; Madurai Kamaraj university, Madurai -; 625 021 Tamil Nadu India
| | - Shanmugam Muthusubramanian
- Department of Organic Chemistry; School of Chemistry; Madurai Kamaraj university, Madurai -; 625 021 Tamil Nadu India
| | - Nattamai Bhuvanesh
- X-ray Diffraction Laboratory; Department of Chemistry; Texas A & M University; College Station TX77842 USA
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7
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Metal‐Free Regioselective Chloroazidation of Internal Alkynes. Chemistry 2018; 25:981-984. [DOI: 10.1002/chem.201805320] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Indexed: 12/12/2022]
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8
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Chen P, Sun CH, Wang Y, Xue Y, Chen C, Shen MH, Xu HD. Intramolecular Schmidt Reaction of Vinyl Azides with Cyclic Ketones. Org Lett 2018; 20:1643-1646. [PMID: 29504761 DOI: 10.1021/acs.orglett.8b00395] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cyclic ketones tethered with a vinyl azide group undergo a Schmidt-hydrolysis sequence to give secondary lactams bearing a ketone side chain. Secondary lactams are obtained in a regioselective manner that is not possible in a conventional Schimdt reaction. In addition to the well-documented C-2 nucleophilicity, the N nucleophilicity of vinyl azide disclosed in this work opens a new direction for reaction invention involving vinyl azides.
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Affiliation(s)
- Peng Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
| | - Chu-Han Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
| | - Yu Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
| | - Ying Xue
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
| | - Chen Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
| | - Mei-Hua Shen
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
| | - Hua-Dong Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
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9
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Banert K, Chityala M, Hagedorn M, Beckers H, Stüker T, Riedel S, Rüffer T, Lang H. Tricyanmethan und sein Ketenimin-Tautomer: Bildung aus verschiedenen Vorstufen sowie Analyse in Lösung, in einer Argonmatrix und im Einkristall. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Klaus Banert
- Organische Chemie; Technische Universität Chemnitz; Straße der Nationen 62 09111 Chemnitz Deutschland
| | - Madhu Chityala
- Organische Chemie; Technische Universität Chemnitz; Straße der Nationen 62 09111 Chemnitz Deutschland
| | - Manfred Hagedorn
- Organische Chemie; Technische Universität Chemnitz; Straße der Nationen 62 09111 Chemnitz Deutschland
| | - Helmut Beckers
- Institut für Chemie und Biochemie; Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Deutschland
| | - Tony Stüker
- Institut für Chemie und Biochemie; Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Deutschland
| | - Sebastian Riedel
- Institut für Chemie und Biochemie; Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Deutschland
| | - Tobias Rüffer
- Anorganische Chemie; Technische Universität Chemnitz; Deutschland
| | - Heinrich Lang
- Anorganische Chemie; Technische Universität Chemnitz; Deutschland
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10
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Li X, Liao S, Wang Z, Zhang L. Ligand-Accelerated Gold-Catalyzed Addition of in Situ Generated Hydrazoic Acid to Alkynes under Neat Conditions. Org Lett 2017; 19:3687-3690. [DOI: 10.1021/acs.orglett.7b01359] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Xiaoqing Li
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
- Department
of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Shengrong Liao
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Zhixun Wang
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Liming Zhang
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
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11
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Banert K, Chityala M, Hagedorn M, Beckers H, Stüker T, Riedel S, Rüffer T, Lang H. Tricyanomethane and Its Ketenimine Tautomer: Generation from Different Precursors and Analysis in Solution, Argon Matrix, and as a Single Crystal. Angew Chem Int Ed Engl 2017; 56:9582-9586. [DOI: 10.1002/anie.201704561] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Klaus Banert
- Chemnitz University of Technology; Organic Chemistry; Strasse der Nationen 62 09111 Chemnitz Germany
| | - Madhu Chityala
- Chemnitz University of Technology; Organic Chemistry; Strasse der Nationen 62 09111 Chemnitz Germany
| | - Manfred Hagedorn
- Chemnitz University of Technology; Organic Chemistry; Strasse der Nationen 62 09111 Chemnitz Germany
| | - Helmut Beckers
- Institut für Chemie und Biochemie; Anorganische Chemie; Freie Universität Berlin; Fabeckstrasse 34-36 14195 Berlin Germany
| | - Tony Stüker
- Institut für Chemie und Biochemie; Anorganische Chemie; Freie Universität Berlin; Fabeckstrasse 34-36 14195 Berlin Germany
| | - Sebastian Riedel
- Institut für Chemie und Biochemie; Anorganische Chemie; Freie Universität Berlin; Fabeckstrasse 34-36 14195 Berlin Germany
| | - Tobias Rüffer
- Chemnitz University of Technology; Inorganic Chemistry; Strasse der Nationen 62 09111 Chemnitz Germany
| | - Heinrich Lang
- Chemnitz University of Technology; Inorganic Chemistry; Strasse der Nationen 62 09111 Chemnitz Germany
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12
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Curiel Tejeda JE, Irwin LC, Kerr MA. Annulation Reactions of Donor–Acceptor Cyclopropanes with (1-Azidovinyl)benzene and 3-Phenyl-2H-azirine. Org Lett 2016; 18:4738-41. [DOI: 10.1021/acs.orglett.6b02409] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Lauren C. Irwin
- Department
of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7
| | - Michael A. Kerr
- Department
of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7
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13
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Tiwari DK, Maurya RA, Nanubolu JB. Visible-Light/Photoredox-Mediated sp3
CH Functionalization and Coupling of Secondary Amines with Vinyl Azides in Flow Microreactors. Chemistry 2015; 22:526-30. [DOI: 10.1002/chem.201504292] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Indexed: 01/09/2023]
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14
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Jung N, Bräse S. Vinyl and alkynyl azides: well-known intermediates in the focus of modern synthetic methods. Angew Chem Int Ed Engl 2012; 51:12169-71. [PMID: 23097305 DOI: 10.1002/anie.201206409] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Nicole Jung
- IOC-ComPlat and ITG, KIT-Campus North, Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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15
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Kupracz L, Hartwig J, Wegner J, Ceylan S, Kirschning A. Multistep flow synthesis of vinyl azides and their use in the copper-catalyzed Huisgen-type cycloaddition under inductive-heating conditions. Beilstein J Org Chem 2011; 7:1441-8. [PMID: 22049302 PMCID: PMC3205773 DOI: 10.3762/bjoc.7.168] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2011] [Accepted: 10/07/2011] [Indexed: 11/23/2022] Open
Abstract
The multistep flow synthesis of vinyl azides and their application in the synthesis of vinyltriazoles is reported. The synthesis relies on a stable polymer-bound equivalent of iodine azide that serves to carry out 1,2-functionalization of alkenes in a telescope flow protocol. The intermediate 2-iodo azides are subjected to a DBU-mediated polymer-supported elimination step yielding vinyl azides in good yield. The third step involves the formation of vinyl triazoles by a copper-catalyzed Huisgen-"click" cycloaddition. The required heat is generated by electromagnetic induction based on copper. Copper serves both as heatable as well as catalytically active packed-bed material inside the flow reactor.
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Affiliation(s)
- Lukas Kupracz
- Institute of Organic Chemistry, Leibniz University Hannover, Schneiderberg 1b, 30167 Hannover, Germany
| | - Jan Hartwig
- Institute of Organic Chemistry, Leibniz University Hannover, Schneiderberg 1b, 30167 Hannover, Germany
| | - Jens Wegner
- Institute of Organic Chemistry, Leibniz University Hannover, Schneiderberg 1b, 30167 Hannover, Germany
| | - Sascha Ceylan
- Institute of Organic Chemistry, Leibniz University Hannover, Schneiderberg 1b, 30167 Hannover, Germany
| | - Andreas Kirschning
- Institute of Organic Chemistry, Leibniz University Hannover, Schneiderberg 1b, 30167 Hannover, Germany
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Patonay T, Kónya K, Juhász-Tóth É. Syntheses and transformations of α-azido ketones and related derivatives. Chem Soc Rev 2011; 40:2797-847. [DOI: 10.1039/c0cs00101e] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Saalfrank RW, Ackermann E, Fischer M, Weiß B, Carrié R, Danion D, Peters K, Von Schnering HG. Synthese Und Eigenschaften Geminaler Bisphosphazide Und Bisphosphinimine Kristall-Und Molekülstruktur Von (δ)-3-Amino-2-Cyan-7-(Diphenylphosphinoyl)-5,5-Diphenyl-4-Aza-5λ5-Phospha-2,4-Heptadiensaure-Methylester. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bscb.19850940706] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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Shen M, Leslie BE, Driver TG. Dirhodium(II)-catalyzed intramolecular C-H amination of aryl azides. Angew Chem Int Ed Engl 2008; 47:5056-9. [PMID: 18512215 DOI: 10.1002/anie.200800689] [Citation(s) in RCA: 243] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Meihua Shen
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, IL 60607, USA
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19
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Shen M, Leslie B, Driver T. Dirhodium(II)-Catalyzed Intramolecular CH Amination of Aryl Azides. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800689] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Patonay T, Jekő J, Juhász-Tóth É. Synthesis of Highly Substituted 2H-Azirine-2-carboxylates via 3-Azido-4-oxobut-2-enoates. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701072] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Bräse S, Gil C, Knepper K, Zimmermann V. Organic azides: an exploding diversity of a unique class of compounds. Angew Chem Int Ed Engl 2006; 44:5188-240. [PMID: 16100733 DOI: 10.1002/anie.200400657] [Citation(s) in RCA: 1622] [Impact Index Per Article: 90.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Since the discovery of organic azides by Peter Griess more than 140 years ago, numerous syntheses of these energy-rich molecules have been developed. In more recent times in particular, completely new perspectives have been developed for their use in peptide chemistry, combinatorial chemistry, and heterocyclic synthesis. Organic azides have assumed an important position at the interface between chemistry, biology, medicine, and materials science. In this Review, the fundamental characteristics of azide chemistry and current developments are presented. The focus will be placed on cycloadditions (Huisgen reaction), aza ylide chemistry, and the synthesis of heterocycles. Further reactions such as the aza-Wittig reaction, the Sundberg rearrangement, the Staudinger ligation, the Boyer and Boyer-Aubé rearrangements, the Curtius rearrangement, the Schmidt rearrangement, and the Hemetsberger rearrangement bear witness to the versatility of modern azide chemistry.
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Affiliation(s)
- Stefan Bräse
- Institut für Organische Chemie, Universität Karlsruhe TH, Germany.
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22
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Carrié R, Danion D, Ackermann E, Saalfrank RW. Substituentenabhängige Konkurrenz zwischen 1,5- und 3,5-Cyclisierung bei Vinylaziden; 4H-Triazole aus 3,3-Diazido-2-cyanacrylsäure-methylester und primären Aminen. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.19820940413] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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23
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Bräse S, Gil C, Knepper K, Zimmermann V. Organische Azide - explodierende Vielfalt bei einer einzigartigen Substanzklasse. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200400657] [Citation(s) in RCA: 346] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Büchel T, Prewo R, Bieri JH, Heimgartner H. 1,3-Dipolare Cycloadditionen von Nitrilium-Betainen mit 4,4-Dimethyl-2-phenyl-2-thiazolin-5-thion. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19840670222] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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25
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Bader H, Hansen HJ. Zur Imidazolbildung aus 2H-Azirinen bzw. Vinylaziden und Nitrilen unter Säurekatalyse. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19780610126] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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26
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Carrié R, Danion D, Ackermann E, Saalfrank RW. Substituent-Dependent Competition between 1,5- and 3,5-Cyclization in Vinly Azides; 4H-Triazoles from 3,3-Diazido-2-cyanoacrylic Acid Methyl Ester and Primary Amines. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/anie.198202881] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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27
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Juhász-Tótha É, Patonay T. Synthesis of Tetrafunctionalized 2-Azido-3-hydroxy-1,4-diones and Their Transformation into 5-Substituted 3-Acylisoxazoles. European J Org Chem 2002. [DOI: 10.1002/1099-0690(200209)2002:17<3055::aid-ejoc3055>3.0.co;2-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Reactivity of α-arylidene benzoheteracyclanone dibromides toward azide ion: an effective approach to 3-(α-substituted-benzyl)chromones and -1-thiochromones. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00142-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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30
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Banert K, Hagedorn M, Liedtke C, Melzer A, Schöffler C. Azido-1,2,3-triphenylpropenes of Varying Stabilities: A Corrigendum of Structure Assignment. European J Org Chem 2000. [DOI: 10.1002/(sici)1099-0690(200001)2000:2<257::aid-ejoc257>3.0.co;2-r] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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31
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Arenas JF, Marcos JI, Otero JC, Sánchez-Gálvez A, Soto J. A multiconfigurational self-consistent field study of the thermal decomposition of methyl azide. J Chem Phys 1999. [DOI: 10.1063/1.479335] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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32
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Svenstrup N, Simonsen KB, Thorup N, Brodersen J, Dehaen W, Becher J. A Pyrazole to Furan Rearrangement. Thermolysis of 5-Azido-4-formylpyrazoles. J Org Chem 1999; 64:2814-2820. [PMID: 11674350 DOI: 10.1021/jo9822075] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
5-Azido-3-benzyl-4-formyl-1-phenylpyrazoles 1a-c extrude dinitrogen upon heating in toluene to give the corresponding nitrenes, which immediately rearrange via a new ring-opening ring-closure reaction to produce an equimolar mixture of 4-cyano-2-phenyl-3-phenylazofurans 2a-c and 3-benzyl-4-cyano-1-phenylpyrazoles 3a-c. The formation of the 4-cyano-2-phenyl-3-phenylazofurans 2a-c is the first example in the pyrazole series of a nitrene rearrangement, in which the parent heterocyclic system of the product differs from that of the starting material. The isolation of equimolar amounts of the two products points to the fact that their formation occurs by two mechanistically interconnected pathways, between which the exchange of a redox equivalent takes place. Evidence for the existence of two mechanistically interlinked pathways is presented, and the insight into the stoechiometry of the reaction is taken advantage of to optimize the reaction with respect to either of the two products 2 or 3. Thus, it is demonstrated how one can bias the two pathways using external reagents, thereby changing the product distribution ratio 2:3 from 1:1 in the unbiased case, to 1:4 in one direction, and to better than 20:1 in the other direction.
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Affiliation(s)
- Niels Svenstrup
- Department of Chemistry, Odense University, Campusvej 55, DK-5230 Odense, Denmark, Department of Chemistry, The Technical University of Denmark, DK-2800 Lyngby, Denmark, and Department of Chemistry, University of Leuven, B-3001 Heverlee, Belgium
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Rose B, Schollmeyer D, Meier H. Synthesis of a Tetraazido-Substituted 2-Tetrazene from 1,5-Cyclooctadiene and Iodine Azide. ACTA ACUST UNITED AC 1997. [DOI: 10.1002/jlac.199719970219] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Alcaraz G, Wecker U, Baceiredo A, Dahan F, Bertrand G. Synthese eines 2H-Azirins durch [1 + 2]-Cycloaddition eines Phosphinocarbens an ein Nitril und Anschließende Ringerweiterung zu einem 1,2λ5-Azaphosphet. Angew Chem Int Ed Engl 1995. [DOI: 10.1002/ange.19951071126] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Öhler E, Kanzler S. [(2H-Azirin-2-yl)methyl]phosphonate: Darstellung aus allylischen α- und γ-Hydroxyphosphonaten und Anwendung zur diastereoselektiven Synthese von substituirten [(Aziridin-2-yl)methyl]phosphonsäureestern. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/jlac.199419940904] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Reactions of Unsaturated Azides, 6. Synthesis of 1,2,3-Triazoles from Propargyl Azides by Rearrangement of the Azido Group. – Indication of Short-Lived Allenyl Azides and Triazafulvenes. ACTA ACUST UNITED AC 1989. [DOI: 10.1002/cber.19891220520] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Saalfrank RW, Wirth U. Geminale Vinyldiazide, VI. 4,5-Dihydro-1H-tetrazol-5-ylidene aus 3,3-Diazido-2-cyanacrylsäureestern und Hydrazinen, Hydraziden sowieO-substituierten Hydroxylaminen. ACTA ACUST UNITED AC 1989. [DOI: 10.1002/cber.19891220320] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Saalfrank RW, Ackermann E, Fischer M, Wirth U. Geminale Vinyldiazide, IV1) Substituentenabhängige Konkurrenz zwischen 1,5- und 3,5-Cyclisierung bei Vinylaziden; 1,2,3-Triazole und 2H-Azirine aus 3,3-Diazido-2-cyanacrylsäure-methylester und Aminen. ACTA ACUST UNITED AC 1987. [DOI: 10.1002/cber.19871201211] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Saalfrank RW, Fischer M, Wirth U, Zimmermann H. (E)-2-(1-Aryl-4,5-dihydro-1H-tetrazol-5-yliden)-2-cyanessigsäure-methylester aus 3,3-Diazido-2-cyanacrylsäure-methylester und primären aromatischen Aminen. Angew Chem Int Ed Engl 1987. [DOI: 10.1002/ange.19870991137] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Banert K. [4 + 2]-Cycloadditionen von 2,3-Diazido-1,3-butadienen: Ein neuer Zugang zu vicinalen Vinyldiaziden und 1,4-Dicyanverbindungen. Angew Chem Int Ed Engl 1987. [DOI: 10.1002/ange.19870990921] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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