1
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Barriault D, Ly HM, Allen MA, Gill MA, Beauchemin AM. Oxidative Syntheses of N, N-Dialkylhydroxylamines. J Org Chem 2024; 89:8767-8772. [PMID: 38814738 DOI: 10.1021/acs.joc.4c00674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Despite the wide utility of hydroxylamines in organic synthesis, relatively few are commercially available, and there is a need for direct, efficient, and selective methods for their synthesis. Herein, we report two complementary methods to accomplish direct oxidation of secondary amines using UHP as an oxidant. The first method uses 2,2,2-trifluoroethanol (TFE) and a large excess of amine. Isolation of hydroxylamine products is enabled by selective salt formation, and recovery of excess amine is demonstrated. The second method uses hexafluoroacetone as an additive and is highlighted by the 1:1 stoichiometry between the oxidant and amine.
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Affiliation(s)
- Daniel Barriault
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Huy M Ly
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Meredith A Allen
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Monica A Gill
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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2
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Kang D, Kim J. Enamine N-oxides: Design, Synthesis, and Function in Bioorthogonal Reactions. Synlett 2024; 35:145-154. [PMID: 38947226 PMCID: PMC11210832 DOI: 10.1055/a-2127-1086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Enamine N-oxides act as a chemical linchpin bridging two bioorthogonal associative and dissociative reactions. This article describes the design of enamine N-oxides; their synthesis through the retro-Cope elimination reaction; the use of solvent, hyperconjugation, strain, and rehybridization effects to achieve bioorthogonal reactivity; and their rapid reductive cleavage with diboron reagents. The coordinated assembly and disassembly of the enamine N-oxide motif constitutes a powerful chemical operation that enables the attachment and detachment of small molecules from biomacromolecules in a biological setting.
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Affiliation(s)
- Dahye Kang
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, United States
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Justin Kim
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, United States
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, United States
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3
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Yamamoto A, Tanaka K, Hashimoto Y, Morita N, Tamura O. Intermolecular 1,3-Dipolar Cycloaddition Reaction of N-Carbamoyl Nitrones Generated by N-Selective Carbamoylation of Oximes with Isocyanates. Chemistry 2023:e202303790. [PMID: 38055213 DOI: 10.1002/chem.202303790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/06/2023] [Accepted: 12/06/2023] [Indexed: 12/07/2023]
Abstract
N-Selective carbamoylation reaction of oximes with isocyanates generates nitrones, which undergo 1,3-dipolar cycloaddition with various dipolarophiles to afford diverse isoxazolidines. Notably, combinations of highly electron-rich oxime and highly electron-deficient dipolarophile exhibited high reactivity, with product yields of up to 94 %. The substituent on the isoxazolidine-nitrogen atom could be successfully removed without loss of the cyclic structure. Computational studies have also elucidated the mechanism of the reaction and origin of stereoselectivity.
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Affiliation(s)
- Ayaka Yamamoto
- Showa Pharmaceutical University, Higashi-Tamagawagakuen, 194-8543, Machida, Tokyo, Japan
| | - Kosaku Tanaka
- Showa Pharmaceutical University, Higashi-Tamagawagakuen, 194-8543, Machida, Tokyo, Japan
- Present Address: Research Foundation ITSUU Laboratory, C1232 Kanagawa Science Park R & D Building Sakado, Takatsu-ku, 213-0012, Kawasaki, Kanagawa, Japan
| | - Yoshimitsu Hashimoto
- Showa Pharmaceutical University, Higashi-Tamagawagakuen, 194-8543, Machida, Tokyo, Japan
| | - Nobuyoshi Morita
- Showa Pharmaceutical University, Higashi-Tamagawagakuen, 194-8543, Machida, Tokyo, Japan
| | - Osamu Tamura
- Showa Pharmaceutical University, Higashi-Tamagawagakuen, 194-8543, Machida, Tokyo, Japan
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4
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Singh J, Sharma S, Prakasham AP, Rajaraman G, Ghosh P. Accessing Bioactive Hydrazones by the Hydrohydrazination of Terminal Alkynes Catalyzed by Gold(I) Acyclic Aminooxy Carbene Complexes and Their Gold(I) Arylthiolato and Gold(III) Tribromo Derivatives: A Combined Experimental and Computational Study. ACS OMEGA 2023; 8:21042-21073. [PMID: 37323414 PMCID: PMC10268297 DOI: 10.1021/acsomega.3c01925] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 05/05/2023] [Indexed: 06/17/2023]
Abstract
Hydrohydrazination of terminal alkynes with hydrazides yielding hydrazones 5-14 were successfully catalyzed by a series of gold(I) acyclic aminooxy carbene complexes of the type [{(4-R2-2,6-t-Bu2-C6H2O)(N(R1)2)}methylidene]AuCl, where R2 = H, R1 = Me (1b); R2 = H, R1 = Cy (2b); R2 = t-Bu, R1 = Me (3b); R2 = t-Bu, R1 = Cy (4b). The mass spectrometric evidence corroborated the existence of the catalytically active solvent-coordinated [(AAOC)Au(CH3CN)]SbF6 (1-4)A species and the acetylene-bound [(AAOC)Au(HC≡CPhMe)]SbF6 (3B) species of the proposed catalysis cycle. The hydrohydrazination reaction was successfully employed in synthesizing several bioactive hydrazone compounds (15-18) with anticonvulsant properties using a representative precatalyst (2b). The DFT studies favored the 4-ethynyltoluene (HC≡CPhMe) coordination pathway over the p-toluenesulfonyl hydrazide (NH2NHSO2C6H4CH3) coordination pathway, and that proceeded by a crucial intermolecular hydrazide-assisted proton transfer step. The gold(I) complexes (1-4)b were synthesized from the {[(4-R2-2,6-t-Bu2-C6H2O)(N(R1)2)]CH}+OTf- (1-4)a by treatment with (Me2S)AuCl in the presence of NaH as a base. The reactivity studies of (1-4)b yielded the gold(III) [{(4-R2-2,6-t-Bu2-C6H2O)(N(R1)2)}methylidene]AuBr3 (1-4)c complexes upon reaction with molecular bromine and the gold(I) perfluorophenylthiolato derivatives, [{(4-R2-2,6-t-Bu2-C6H2O)(N(R1)2)}methylidene]AuSC6F5 (1-4)d, upon treatment with C6F5SH.
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5
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Allen MA, Volosheniuk M, Nicol EA, Schwan AL, Beauchemin AM. Cope-Type Hydroamination of Vinylboronates. Org Lett 2023; 25:3045-3048. [PMID: 37097727 DOI: 10.1021/acs.orglett.3c00857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
Aminoboronic acid derivatives can serve as versatile synthetic intermediates and pharmacophores but remain difficult to synthesize. Herein we report a synthesis of the β-aminoboronic acid motif via anti-Markovnikov hydroamination of vinylboronates. This reaction benefits from the activating effect of the boronate substituent and forms novel BON-containing heterocycles, oxazaborolidine zwitterions. A computational study is included to help determine the effects of alkene boron substitution. Derivatization reactions also support the synthetic utility of the oxazaborolidine adducts.
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Affiliation(s)
- Meredith A Allen
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | - Myroslava Volosheniuk
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | - Eric A Nicol
- Department of Chemistry, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Adrian L Schwan
- Department of Chemistry, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada
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6
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Hill J, Beckler TD, Crich D. Recent Advances in the Synthesis of Di- and Trisubstituted Hydroxylamines. Molecules 2023; 28:molecules28062816. [PMID: 36985788 PMCID: PMC10051932 DOI: 10.3390/molecules28062816] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/08/2023] [Accepted: 03/13/2023] [Indexed: 03/30/2023] Open
Abstract
As an underrepresented functional group in bioorganic and medicinal chemistry, the hydroxylamine unit has historically received little attention from the synthetic community. Recent developments, however, suggest that hydroxylamines may have broader applications such that a review covering recent developments in the synthesis of this functional group is timely. With this in mind, this review primarily covers developments in the past 15 years in the preparation of di- and trisubstituted hydroxylamines. The mechanism of the reactions and key features and shortcomings are discussed throughout the review.
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Affiliation(s)
- Jarvis Hill
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, GA 30602, USA
- Department of Chemistry, University of Georgia, 302 East Campus Road, Athens, GA 30602, USA
| | - Thomas D Beckler
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, GA 30602, USA
- Department of Chemistry, University of Georgia, 302 East Campus Road, Athens, GA 30602, USA
| | - David Crich
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, GA 30602, USA
- Department of Chemistry, University of Georgia, 302 East Campus Road, Athens, GA 30602, USA
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
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7
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Allen MA, Ly HM, O'Keefe GF, Beauchemin AM. A redox-enabled strategy for intramolecular hydroamination. Chem Sci 2022; 13:7264-7268. [PMID: 35799811 PMCID: PMC9214914 DOI: 10.1039/d2sc00481j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 05/27/2022] [Indexed: 12/18/2022] Open
Abstract
Metal- or acid-catalyzed intramolecular hydroamination and Cope-type intramolecular hydroamination, a distinct concerted approach using hydroxylamines, typically suffer from significant synthetic limitations. Herein we report a process for intramolecular hydroamination that uses a redox-enabled strategy relying on efficient in situ generation of hydroxylamines by oxidation, followed by Cope-type hydroamination, then reduction of the resulting pyrrolidine N-oxide. The steps are performed sequentially in a single pot, no catalyst is required, the conditions are mild, the process is highly functional group tolerant, and no chromatography is generally required for isolation. A robustness screen and a gram-scale example further support the practicality of this approach.
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Affiliation(s)
- Meredith A Allen
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa 10 Marie-Curie Ottawa ON K1N 6N5 Canada
| | - Huy M Ly
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa 10 Marie-Curie Ottawa ON K1N 6N5 Canada
| | - Geneviève F O'Keefe
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa 10 Marie-Curie Ottawa ON K1N 6N5 Canada
| | - André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa 10 Marie-Curie Ottawa ON K1N 6N5 Canada
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8
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Kobychev VB, Pradedova AG, Trofimov BA. A one-pot assembly of Δ2-isoxazolines from ketones, aryl acetylenes and hydroxylamine: Revisiting the mechanism in terms of quantum chemistry. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131185] [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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9
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Takagi R, Duong DT. Computational study on N-triflylphosphoramide-catalyzed enantioselective hydroamination of alkenyl thiourea. Org Biomol Chem 2021; 19:8806-8811. [PMID: 34569576 DOI: 10.1039/d1ob01672e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The mechanism of the enantioselective intramolecular hydroamination of alkenyl thiourea catalyzed by chiral binaphthol N-triflylphosphoramide (NPTA) was investigated using density functional theory calculations. This study reveals the details of the hydrogen bonding mode between NPTA and the substrate and indicates the importance of the dual hydrogen binding properties of the thiourea moiety for the reactivity and stereoselectivity of the hydroamination.
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Affiliation(s)
- Ryukichi Takagi
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan.
| | - Duyen Thi Duong
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan.
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10
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Takagi R, Duong DT, Ichiki T. Disulfonimide catalyzed asymmetric intramolecular hydroamination of alkenyl thioureas: Concentration effect in the hydroamination. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Peng C, Gao Y, Wang P, Zhao Y, Chapagain B, Wang Y, Liu W, Yang Y. Theoretical Exploration of Copper-Catalyzed Mechanisms of Cope-Type Hydroamination of Cyclopropene and Oxime. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Kang D, Cheung ST, Kim J. Bioorthogonal Hydroamination of Push-Pull-Activated Linear Alkynes. Angew Chem Int Ed Engl 2021; 60:16947-16952. [PMID: 34019705 DOI: 10.1002/anie.202104863] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/16/2021] [Indexed: 01/14/2023]
Abstract
A bioorthogonal reaction between N,N-dialkylhydroxylamines and push-pull-activated halogenated alkynes is described. We explore the use of rehybridization effects in activating alkynes, and we show that electronic effects, when competing stereoelectronic and inductive factors are properly balanced, sufficiently activate a linear alkyne in the uncatalyzed conjugative retro-Cope elimination reaction while adequately protecting it against cellular nucleophiles. This design preserves the low steric profile of an alkyne and pairs it with a comparably unobtrusive hydroxylamine. The kinetics are on par with those of the fastest strain-promoted azide-alkyne cycloaddition reactions, the products regioselectively formed, the components sufficiently stable and easily installed, and the reaction suitable for cellular labeling.
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Affiliation(s)
- Dahye Kang
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, 02115, USA
| | - Sheldon T Cheung
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, 02115, USA
| | - Justin Kim
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, 02115, USA
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13
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Kang D, Cheung ST, Kim J. Bioorthogonal Hydroamination of Push–Pull‐Activated Linear Alkynes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Dahye Kang
- Department of Cancer Biology Dana-Farber Cancer Institute Boston MA 02215 USA
- Department of Biological Chemistry and Molecular Pharmacology Harvard Medical School Boston MA 02115 USA
| | - Sheldon T. Cheung
- Department of Cancer Biology Dana-Farber Cancer Institute Boston MA 02215 USA
- Department of Biological Chemistry and Molecular Pharmacology Harvard Medical School Boston MA 02115 USA
| | - Justin Kim
- Department of Cancer Biology Dana-Farber Cancer Institute Boston MA 02215 USA
- Department of Biological Chemistry and Molecular Pharmacology Harvard Medical School Boston MA 02115 USA
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14
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Kang D, Cheung ST, Wong-Rolle A, Kim J. Enamine N-Oxides: Synthesis and Application to Hypoxia-Responsive Prodrugs and Imaging Agents. ACS CENTRAL SCIENCE 2021; 7:631-640. [PMID: 34056093 PMCID: PMC8155465 DOI: 10.1021/acscentsci.0c01586] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Indexed: 05/10/2023]
Abstract
Tumor hypoxia induces the large-scale adaptive reprogramming of cancer cells, promoting their transformation into highly invasive and metastatic species that lead to highly negative prognoses for cancer patients. We describe the synthesis and application of a hypoxia-responsive trigger derived from previously inaccessible enamine N-oxide structures. Hypoxia-dependent reduction of this motif by hemeproteins results in the concomitant activation of a caged molecule and a latent electrophile. We exploit the former in a hypoxia-activated prodrug application using a caged staurosporine molecule as a proof-of-principle. We demonstrate the latter in in vivo tumor labeling applications with enamine-N-oxide-modified near-infrared probes. Hypoxia-activated prodrug development has long been complicated by the heterogeneity of tumor hypoxia in patients. The dual drug release and imaging modalities of the highly versatile enamine N-oxide motif present an attractive opportunity for theranostic development that can address the need not only for new therapeutics but paired methods for patient stratification.
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15
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Kang D, Kim J. Bioorthogonal Retro-Cope Elimination Reaction of N, N-Dialkylhydroxylamines and Strained Alkynes. J Am Chem Soc 2021; 143:5616-5621. [PMID: 33829777 DOI: 10.1021/jacs.1c00885] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A bioorthogonal reaction between N,N-dialkylhydroxylamines and cyclooctynes is described. This reaction features a highly regioselective transformation between small, easily functionalizable reaction components with second-order rate constants reaching 84 M-1 s-1. The reaction is orthogonal to the inverse-electron demand Diels-Alder reactions between tetrazine and strained alkenes, and its components exhibit exquisite stability and chemoselectivity in cell lysate. This retro-Cope elimination reaction introduces a new member to the bioorthogonal reaction compendium outside the prolific class of cycloaddition reactions.
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Affiliation(s)
- Dahye Kang
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, United States.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Justin Kim
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, United States.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, United States
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16
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Chauhan PS, Brettell S, Ramakotaiah M, Diarra S, Nguyen AMT, Wei X, Hamdane Y, Yongo-Luwawa CD, Lubell WD. Hydrazine derivative synthesis by trifluoroacetyl hydrazide alkylation. CAN J CHEM 2020. [DOI: 10.1139/cjc-2020-0052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
N′-Alkyl hydrazides were effectively synthesized by routes featuring installation, alkylation, and removal of a trifluoroacetyl group. A set of amino acid derived hydrazides were acylated using trifluoroacetic anhydride, and the resulting trifluoroacetyl hydrazides were alkylated with alcohols in Mitsunobu reactions and with alkyl halides under alkaline conditions. Removal of the trifluoroacetyl group was affected under reductive and hydrolytic conditions to provide the respective N′-alkyl hydrazides. This three-step process may be performed without isolation of intermediates to yield N′-alkyl hydrazide after a single chromatographic purification.
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Affiliation(s)
- Pradeep S. Chauhan
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Skye Brettell
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Mulamreddy Ramakotaiah
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Sitan Diarra
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Anh Minh Thao Nguyen
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Xiaozheng Wei
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Yousra Hamdane
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Charity Deborah Yongo-Luwawa
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - William D. Lubell
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
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17
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Byers P, Doyle P, Augusta A. Theoretical study of concerted hydroamination‐fragmentation reactions to alkenes and alkynes. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Philip Byers
- Department of ChemistryFarmingdale State College Farmingdale NY USA
| | - Patrick Doyle
- Department of ChemistryFarmingdale State College Farmingdale NY USA
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18
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Zhang M, Liu S, Li H, Guo Y, Li N, Guan M, Mehfooz H, Zhao J, Zhang Q. Copper‐Catalyzed Cope‐Type Hydroamination of Nonactivated Olefins toward Cyclic Nitrones: Scope, Mechanism, and Enantioselective Process Development. Chemistry 2019; 25:12620-12627. [DOI: 10.1002/chem.201902683] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/19/2019] [Indexed: 01/13/2023]
Affiliation(s)
- Mengru Zhang
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Shuang Liu
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Hexin Li
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Yajing Guo
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Na Li
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Meihui Guan
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Haroon Mehfooz
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Jinbo Zhao
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Qian Zhang
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
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19
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Ivanovich RA, Quartus JAM, Das Neves N, Loiseau F, Raymond M, Beauchemin AM. Aminimide Synthesis Using Concerted Amination Reactions of Alkenes: Scope and Mechanistic Information. J Org Chem 2019; 84:9792-9800. [PMID: 31290665 DOI: 10.1021/acs.joc.9b01259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Aminimides are key intermediates in the thermal cycloadditions of suitable alkenyl-hydrazine derivatives. Substrate modifications (β-N,N-dialkyl) allowed the isolation of these reactive intermediates, and the analysis of their stereochemistry provided support for concerted (Cope-type) hydroamination and concerted [3 + 2] aminocarbonylation reaction pathways. This work also establishes the applicability of these approaches to form complex aminimides in moderate to excellent yields.
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Affiliation(s)
- Ryan A Ivanovich
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Jasper A M Quartus
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Nicolas Das Neves
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Francis Loiseau
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Michaël Raymond
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
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20
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Liu M, Zhou T, Zhang M, Zhao J, Zhang Q. Palladium(II)‐Catalyzed Cope‐Type Hydroamination: Efficient Access to Five and Six‐Membered Cyclic Nitrones. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Mingzhu Liu
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Tingting Zhou
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Mengru Zhang
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Jinbo Zhao
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Qian Zhang
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry, CAS Shanghai 200032 P. R. China
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21
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Anti-Markovnikov stereoselective hydroamination and hydrothiolation of (hetero)aromatic alkynes using a metal-free cyclic trimeric phosphazene base. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.04.075] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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22
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Nguyen HN, Hultzsch KC. Rare-Earth-Metal-Catalyzed Kinetic Resolution of Chiral Aminoalkenes via Hydroamination: The Effect of the Silyl Substituent of the Binaphtholate Ligand on Resolution Efficiency. European J Org Chem 2019; 2019:2592-2601. [PMID: 31244549 PMCID: PMC6582503 DOI: 10.1002/ejoc.201900107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Indexed: 01/11/2023]
Abstract
The kinetic resolution of α-substituted aminopentenes via intramolecular hydroamination was investigated using various 3,3'-silyl-substituted binaphtholate yttrium catalysts. High efficiencies in the kinetic resolution were observed for methyl-, benzyl-, and phenyl-substituted substrates utilizing the cyclohexyldiphenylsilyl-substituted catalyst 2c with resolution factors reaching as high as 90(5) for hex-5-en-2-amine (3a). Kinetic analysis of the enantioenriched substrates with the matching and mismatching catalyst revealed that the efficiency of catalyst 2c benefits significantly from a favorable Curtin-Hammett pre-equilibrium and by a large kfast/kslow ratio. Other binaphtholate catalysts were less efficient due to a less favorable Curtin-Hammett pre-equilibrium, which often favored the mismatching substrate-catalyst combination. Cyclization of the matched substrate proceeds generally with large trans-selectivity, whereas the trans/cis-ratio for mismatched substrates is significantly diminished, favoring the cis-cyclization product isomer in some instances.
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Affiliation(s)
- Hiep N Nguyen
- Department of Chemistry and Chemical Biology Rutgers, The State University of New Jersey 610 Taylor Road 8087 Piscataway, New Jersey 08854- USA
| | - Kai C Hultzsch
- Universität Wien Fakultät für Chemie Institut für Chemische Katalyse Währinger Straße 38 1090 Wien Austria
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23
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Ötvös SB, Georgiádes Á, Ozsvár D, Fülöp F. Continuous-flow synthesis of 3,5-disubstituted pyrazoles via sequential alkyne homocoupling and Cope-type hydroamination. RSC Adv 2019; 9:8197-8203. [PMID: 35518676 PMCID: PMC9061249 DOI: 10.1039/c9ra01590f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Accepted: 03/04/2019] [Indexed: 12/28/2022] Open
Abstract
A flow chemistry-based approach is presented for the synthesis of 3,5-disubstituted pyrazoles via sequential copper-mediated alkyne homocoupling and Cope-type hydroamination of the intermediary 1,3-diynes in the presence of hydrazine as nucleophilic reaction partner. The proposed multistep methodology offers an easy and direct access to valuable pyrazoles from cheap and readily available starting materials and without the need for the isolation of any intermediates. A telescoped continuous-flow method is presented for the synthesis of 3,5-disubstituted pyrazoles via copper-mediated alkyne homocoupling and Cope-type hydroamination of the intermediary 1,3-dialkynes.![]()
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Affiliation(s)
- Sándor B. Ötvös
- Institute of Pharmaceutical Chemistry
- University of Szeged
- Interdisciplinary Excellence Center
- H-6720 Szeged
- Hungary
| | - Ádám Georgiádes
- Institute of Pharmaceutical Chemistry
- University of Szeged
- Interdisciplinary Excellence Center
- H-6720 Szeged
- Hungary
| | - Dániel Ozsvár
- Institute of Pharmaceutical Chemistry
- University of Szeged
- Interdisciplinary Excellence Center
- H-6720 Szeged
- Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry
- University of Szeged
- Interdisciplinary Excellence Center
- H-6720 Szeged
- Hungary
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24
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Kärkäs MD. Electrochemical strategies for C-H functionalization and C-N bond formation. Chem Soc Rev 2018; 47:5786-5865. [PMID: 29911724 DOI: 10.1039/c7cs00619e] [Citation(s) in RCA: 588] [Impact Index Per Article: 98.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Conventional methods for carrying out carbon-hydrogen functionalization and carbon-nitrogen bond formation are typically conducted at elevated temperatures, and rely on expensive catalysts as well as the use of stoichiometric, and perhaps toxic, oxidants. In this regard, electrochemical synthesis has recently been recognized as a sustainable and scalable strategy for the construction of challenging carbon-carbon and carbon-heteroatom bonds. Here, electrosynthesis has proven to be an environmentally benign, highly effective and versatile platform for achieving a wide range of nonclassical bond disconnections via generation of radical intermediates under mild reaction conditions. This review provides an overview on the use of anodic electrochemical methods for expediting the development of carbon-hydrogen functionalization and carbon-nitrogen bond formation strategies. Emphasis is placed on methodology development and mechanistic insight and aims to provide inspiration for future synthetic applications in the field of electrosynthesis.
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Affiliation(s)
- Markus D Kärkäs
- Department of Chemistry, Organic Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
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25
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Kerkovius JK, Kerr MA. Total Synthesis of Isodihydrokoumine, (19Z)-Taberpsychine, and (4R)-Isodihydroukoumine N4-Oxide. J Am Chem Soc 2018; 140:8415-8419. [DOI: 10.1021/jacs.8b05095] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jeff K. Kerkovius
- Department of Chemistry, University of Western Ontario, 1151 Richmond Street, London, ON N6A 3K7, Canada
| | - Michael A. Kerr
- Department of Chemistry, University of Western Ontario, 1151 Richmond Street, London, ON N6A 3K7, Canada
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26
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Allen MA, Ivanovich RA, Polat DE, Beauchemin AM. Synthesis of N-Oxyureas by Substitution and Cope-Type Hydroamination Reactions Using O-Isocyanate Precursors. Org Lett 2017; 19:6574-6577. [PMID: 29166028 DOI: 10.1021/acs.orglett.7b03288] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Oxy-carbamate O-isocyanate precursors facilitate access to synthetically valuable N-oxyureas via substitution with amines. This work exploits the reactivity of suitable O-isocyanate precursors, identified by a thorough study highlighting the different reactivity of isocyanate masking groups. This led to bench-stable O-isocyanate precursors, offering improved versatility in the synthesis of N-oxyureas, and demonstrates the controlled reactivity of masked O-isocyanates. Suitable precursors also enabled the first example of Cope-type hydroamination of unsaturated hydroxyureas.
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Affiliation(s)
- Meredith A Allen
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
| | - Ryan A Ivanovich
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
| | - Dilan E Polat
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
| | - André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
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27
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Wang Q, An J, Alper H, Xiao WJ, Beauchemin AM. Catalytic substitution/cyclization sequences of O-substituted Isocyanates: synthesis of 1-alkoxybenzimidazolones and 1-alkoxy-3,4-dihydroquinazolin-2(1H)-ones. Chem Commun (Camb) 2017; 53:13055-13058. [PMID: 29165447 DOI: 10.1039/c7cc07926e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
O-Substituted isocyanates (O-isocyanates) have rarely been used in organic synthesis, given their tendency to undergo side reactions (e.g., trimerization). Herein, we show that masked (blocked) O-isocyanate precursors allow one-pot or cascade reaction sequences featuring base-catalyzed substitution with 2-iodoanilines and 2-iodobenzylamines followed by copper-catalyzed cyclization, to form benzimidazolones and 3,4-dihydroquinazolin-2(1H)-ones. This work shows that O-isocyanates can serve as efficient building blocks for the synthesis of hydroxylamine-containing heterocycles.
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Affiliation(s)
- Qiang Wang
- CCNU-uOttawa Joint Research Centre, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
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28
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Li Z, Zhao J, Sun B, Zhou T, Liu M, Liu S, Zhang M, Zhang Q. Asymmetric Nitrone Synthesis via Ligand-Enabled Copper-Catalyzed Cope-Type Hydroamination of Cyclopropene with Oxime. J Am Chem Soc 2017; 139:11702-11705. [DOI: 10.1021/jacs.7b06523] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhanyu Li
- Jilin Province Key Laboratory of Functional Organic Molecule Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
| | - Jinbo Zhao
- Jilin Province Key Laboratory of Functional Organic Molecule Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
| | - Baozhen Sun
- Jilin Province Key Laboratory of Functional Organic Molecule Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
| | - Tingting Zhou
- Jilin Province Key Laboratory of Functional Organic Molecule Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
| | - Mingzhu Liu
- Jilin Province Key Laboratory of Functional Organic Molecule Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
| | - Shuang Liu
- Jilin Province Key Laboratory of Functional Organic Molecule Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
| | - Mengru Zhang
- Jilin Province Key Laboratory of Functional Organic Molecule Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
| | - Qian Zhang
- Jilin Province Key Laboratory of Functional Organic Molecule Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
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29
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Kärkäs MD. Photochemical Generation of Nitrogen-Centered Amidyl, Hydrazonyl, and Imidyl Radicals: Methodology Developments and Catalytic Applications. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01385] [Citation(s) in RCA: 280] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Markus D. Kärkäs
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
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30
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Rotta-Loria NL, Chisholm AJ, MacQueen PM, McDonald R, Ferguson MJ, Stradiotto M. Exploring the Influence of Phosphine Ligation on the Gold-Catalyzed Hydrohydrazination of Terminal Alkynes at Room Temperature. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00373] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Nicolas L. Rotta-Loria
- Department
of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, Nova Scotia B3H 4R2, Canada
| | - Alicia J. Chisholm
- Department
of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, Nova Scotia B3H 4R2, Canada
| | - Preston M. MacQueen
- Department
of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, Nova Scotia B3H 4R2, Canada
| | - Robert McDonald
- X-Ray
Crystallography Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Michael J. Ferguson
- X-Ray
Crystallography Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Mark Stradiotto
- Department
of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, Nova Scotia B3H 4R2, Canada
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31
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Abstract
Inter- or intramolecular hydroamination reactions are a paradigmatic example of modern sustainable organic chemistry, as they are a catalytic, 100% atom-economical, and waste-free process of fundamental simplicity in which an amine is added to an alkyne substrate. Many enamines are found in many natural and synthetic compounds possessing interesting physiological and biological activities. The development of synthetic protocols for such molecules and their transformation is a persistent research topic in pharmaceutical and organic chemistry. Hydroamination is conspicuously superior to the other accessible methods, such as the imination of ketones or the aminomercuration/demercuration of alkynes, that involve the stoichiometric use of toxic reagents. Additionally, the hydroamination of alkyne substrates has been successfully employed as a key step in synthesizing target molecules through total syntheses containing substituted indoles, pyrroles, imidazoles, and other heterocycles as core moieties. Many research groups have explored inter- or intramolecular hydroamination of alkynes for the synthesis of diversely substituted nitrogen heterocycles using expensive metal catalysts. However, in contrast to metal-catalyzed hydroamination, the base-mediated hydroamination of alkynes has not been extensively studied. Various inorganic (such as hydroxides, phosphates, and carbonates) and organic bases have been proven to be valuable reagents for achieving the hydroamination process. This method represents an attractive strategy for the construction of a broad range of nitrogen-containing compounds that prevents the formation of byproducts in the creation of a C-N linkage. The presence of a base is thought to facilitate the attack of nitrogen nucleophiles, such as indoles, pyrroles, and imidazoles, on unsaturated carbon substrates through the activation of the triple bond and thus transforming the electron-rich alkyne into an electrophile. In the past few years, we have been involved in the development of methods for the nucleophilic addition of N-heterocycles onto terminal and internal alkynes using alkali base catalysts to achieve new carbon-nitrogen bond-forming reactions. During our study, we discovered the regioselective preferential nucleophilic addition of N-heterocycles onto the haloarylalkyne over N-arylation of the aryl halide. In this Account, we summarize our latest achievements in regio-, stereo-, and chemoselective hydroamination chemistry of N-nucleophiles with alkynes using a superbasic medium to produce a broad range of highly functionalized vinyl and styryl enamines, which are valuable and versatile synthetic intermediates for the synthesis of bioactive compounds. Interestingly, the stereoselectivity of the addition products (kinetically stable Z and thermodynamically stable E isomers) was found to be dependent upon time. It is worthwhile to note that hydroaminated products formed by the addition reaction can further be utilized for the synthesis of indolo-/pyrrolo[2,1-a]isoquinolines, naphthyridines, and bisindolo/pyrrolo[2,1-a]isoquinolinesvia tandem cyclization. This chemistry is expected to find application in organic synthesis for constructing a diverse variety of fused π-conjugated compounds, enaminones, and C-C coupled products.
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Affiliation(s)
- Monika Patel
- Department of Chemistry, University of Delhi, Delhi-110007, India
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32
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Bongers A, Clavette C, Gan W, Gorelsky SI, Betit L, Lavergne K, Markiewicz T, Moon PJ, Das Neves N, Obhi NK, Toderian AB, Beauchemin AM. Intermolecular Aminocarbonylation of Alkenes using Concerted Cycloadditions of Iminoisocyanates. J Org Chem 2017; 82:1175-1194. [DOI: 10.1021/acs.joc.6b02713] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Amanda Bongers
- Centre for Catalysis Research
and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Christian Clavette
- Centre for Catalysis Research
and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Wei Gan
- Centre for Catalysis Research
and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Serge I. Gorelsky
- Centre for Catalysis Research
and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Lyanne Betit
- Centre for Catalysis Research
and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Kaitlyn Lavergne
- Centre for Catalysis Research
and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Thomas Markiewicz
- Centre for Catalysis Research
and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Patrick J. Moon
- Centre for Catalysis Research
and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Nicolas Das Neves
- Centre for Catalysis Research
and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Nimrat K. Obhi
- Centre for Catalysis Research
and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Amy B. Toderian
- Centre for Catalysis Research
and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - André M. Beauchemin
- Centre for Catalysis Research
and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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33
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Li BJ, EI-Nachef C, Beauchemin AM. Organocatalysis using aldehydes: the development and improvement of catalytic hydroaminations, hydrations and hydrolyses. Chem Commun (Camb) 2017; 53:13192-13204. [DOI: 10.1039/c7cc07352f] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Aldehydes as organocatalysts? Simple aldehydes achieve difficult intermolecular reactions by exploiting temporary intramolecularity and inducing electrophilic activation.
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Affiliation(s)
- Bin-Jie Li
- Centre for Catalysis Research and Innovation
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
| | - Claudia EI-Nachef
- Centre for Catalysis Research and Innovation
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
| | - André M. Beauchemin
- Centre for Catalysis Research and Innovation
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
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34
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Pair E, Cadart T, Levacher V, Brière JF. Meldrum's Acid: A Useful Platform in Asymmetric Organocatalysis. ChemCatChem 2016. [DOI: 10.1002/cctc.201600247] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Etienne Pair
- Normandie Univ, COBRA, UMR 6014 et FR 3038; Univ Rouen, INSA Rouen, CNRS, IRCOF; 1 rue Tesnière 76821 Mont Saint Aignan Cedex France
| | - Timothée Cadart
- Normandie Univ, COBRA, UMR 6014 et FR 3038; Univ Rouen, INSA Rouen, CNRS, IRCOF; 1 rue Tesnière 76821 Mont Saint Aignan Cedex France
| | - Vincent Levacher
- Normandie Univ, COBRA, UMR 6014 et FR 3038; Univ Rouen, INSA Rouen, CNRS, IRCOF; 1 rue Tesnière 76821 Mont Saint Aignan Cedex France
| | - Jean-François Brière
- Normandie Univ, COBRA, UMR 6014 et FR 3038; Univ Rouen, INSA Rouen, CNRS, IRCOF; 1 rue Tesnière 76821 Mont Saint Aignan Cedex France
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35
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Ivanovich RA, Clavette C, Vincent-Rocan JF, Roveda JG, Gorelsky SI, Beauchemin AM. Intramolecular Alkene Aminocarbonylation Using Concerted Cycloadditions of Amino-Isocyanates. Chemistry 2016; 22:7906-16. [DOI: 10.1002/chem.201600574] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Ryan A. Ivanovich
- Centre for Catalysis Research and Innovation; Department of Chemistry and Biomolecular Sciences; University of Ottawa; 10 Marie-Curie Ottawa ON K1N 6N5 Canada
| | - Christian Clavette
- Centre for Catalysis Research and Innovation; Department of Chemistry and Biomolecular Sciences; University of Ottawa; 10 Marie-Curie Ottawa ON K1N 6N5 Canada
| | - Jean-François Vincent-Rocan
- Centre for Catalysis Research and Innovation; Department of Chemistry and Biomolecular Sciences; University of Ottawa; 10 Marie-Curie Ottawa ON K1N 6N5 Canada
| | - Jean-Grégoire Roveda
- Centre for Catalysis Research and Innovation; Department of Chemistry and Biomolecular Sciences; University of Ottawa; 10 Marie-Curie Ottawa ON K1N 6N5 Canada
| | - Serge I. Gorelsky
- Centre for Catalysis Research and Innovation; Department of Chemistry and Biomolecular Sciences; University of Ottawa; 10 Marie-Curie Ottawa ON K1N 6N5 Canada
| | - André M. Beauchemin
- Centre for Catalysis Research and Innovation; Department of Chemistry and Biomolecular Sciences; University of Ottawa; 10 Marie-Curie Ottawa ON K1N 6N5 Canada
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36
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Rodriguez-Ruiz V, Carlino R, Bezzenine-Lafollée S, Gil R, Prim D, Schulz E, Hannedouche J. Recent developments in alkene hydro-functionalisation promoted by homogeneous catalysts based on earth abundant elements: formation of C-N, C-O and C-P bond. Dalton Trans 2016; 44:12029-59. [PMID: 25803322 DOI: 10.1039/c5dt00280j] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This Perspective article provides an overview of the recent advancements in the field of intra- and inter-molecular C-N, C-O and C-P bond formation by hydroamination, hydroalkoxylation, hydrophosphination, hydrophosphonylation or hydrophosphinylation of unactivated alkenes, including allenes, 1,3-dienes and strained alkenes, promoted by (chiral) homogeneous catalysts based on earth abundant elements of the s and p blocks, the first row transition metals and the rare-earth metals. The relevant literature from 2009 until late 2014 has been covered.
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37
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Peng X, Kaga A, Hirao H, Chiba S. Hydroamination of alkenyl N-arylhydrazones mediated by t-BuOK for the synthesis of nitrogen heterocycles. Org Chem Front 2016. [DOI: 10.1039/c6qo00053c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The t-BuOK-mediated reactions of γ,δ-alkenyl hydrazones enabled intramolecular hydroamination with the outer nitrogen, affording tetrahydropyridazine derivatives.
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Affiliation(s)
- Xingao Peng
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Atsushi Kaga
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Hajime Hirao
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Shunsuke Chiba
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Singapore
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Vincent-Rocan JF, Ivanovich RA, Clavette C, Leckett K, Bejjani J, Beauchemin AM. Cascade reactions of nitrogen-substituted isocyanates: a new tool in heterocyclic chemistry. Chem Sci 2016; 7:315-328. [PMID: 29861985 PMCID: PMC5952554 DOI: 10.1039/c5sc03197d] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 09/22/2015] [Indexed: 11/25/2022] Open
Abstract
In contrast to normal C-substituted isocyanates, nitrogen-substituted isocyanates (N-isocyanates) are rare. Their high reactivity and amphoteric/ambident nature has prevented the scientific community from exploiting their synthetic potential. Recently, we have developed an in situ formation approach using a reversible equilibrium, which allows controlled generation and reactivity of N-isocyanates and prevents the dimerization that is typically observed with these intermediates. This blocked (masked) N-isocyanate approach enables the use of various N-isocyanate precursors to assemble heterocycles possessing the N-N-C[double bond, length as m-dash]O motif, which is often found in agrochemicals and pharmaceuticals. Cascade reactions for the rapid assembly of several valuable 5- and 6-membered heterocycles are reported, including amino-hydantoins, acyl-pyrazoles, acyl-phthalazinones and azauracils. Over 100 different compounds were synthesized using amino-, imino- and amido-substituted N-isocyanates, demonstrating their potential as powerful intermediates in heterocyclic synthesis. Their reactivity also enables access to unprecedented bicyclic derivatives and to substitution patterns of azauracils that are difficult to access using known methods, illustrating that controlled reactivity of N-isocyanates provides new disconnections, and a new tool to assemble complex N-N-C[double bond, length as m-dash]O containing motifs.
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Affiliation(s)
- Jean-François Vincent-Rocan
- Centre for Catalysis Research and Innovation , Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , ON K1N 6N5 , Canada .
| | - Ryan A Ivanovich
- Centre for Catalysis Research and Innovation , Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , ON K1N 6N5 , Canada .
| | - Christian Clavette
- Centre for Catalysis Research and Innovation , Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , ON K1N 6N5 , Canada .
| | - Kyle Leckett
- Centre for Catalysis Research and Innovation , Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , ON K1N 6N5 , Canada .
| | - Julien Bejjani
- Centre for Catalysis Research and Innovation , Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , ON K1N 6N5 , Canada .
| | - André M Beauchemin
- Centre for Catalysis Research and Innovation , Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , ON K1N 6N5 , Canada .
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39
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Kaga A, Peng X, Hirao H, Chiba S. Diastereo‐Divergent Synthesis of Saturated Azaheterocycles Enabled by
t
BuOK‐Mediated Hydroamination of Alkenyl Hydrazones. Chemistry 2015; 21:19112-8. [DOI: 10.1002/chem.201504160] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Indexed: 01/26/2023]
Affiliation(s)
- Atsushi Kaga
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)
| | - Xingao Peng
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)
| | - Hajime Hirao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)
| | - Shunsuke Chiba
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)
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40
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Berini C, Sebban M, Oulyadi H, Sanselme M, Levacher V, Brière JF. Organocatalyzed Multicomponent Synthesis of Isoxazolidin-5-ones. Org Lett 2015; 17:5408-11. [DOI: 10.1021/acs.orglett.5b02755] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Christophe Berini
- Normandie Univ, COBRA, UMR 6014 et FR 3038; Univ Rouen; INSA Rouen; CNRS, IRCOF, 1 rue Tesnière, 76821 Mont Saint Aignan Cedex, France
| | - Muriel Sebban
- Normandie Univ, COBRA, UMR 6014 et FR 3038; Univ Rouen; INSA Rouen; CNRS, IRCOF, 1 rue Tesnière, 76821 Mont Saint Aignan Cedex, France
| | - Hassan Oulyadi
- Normandie Univ, COBRA, UMR 6014 et FR 3038; Univ Rouen; INSA Rouen; CNRS, IRCOF, 1 rue Tesnière, 76821 Mont Saint Aignan Cedex, France
| | - Morgane Sanselme
- Normandie Univ, Laboratoire SMS- EA3233, Univ Rouen, F-76821, Mont Saint Aignan, France
| | - Vincent Levacher
- Normandie Univ, COBRA, UMR 6014 et FR 3038; Univ Rouen; INSA Rouen; CNRS, IRCOF, 1 rue Tesnière, 76821 Mont Saint Aignan Cedex, France
| | - Jean-François Brière
- Normandie Univ, COBRA, UMR 6014 et FR 3038; Univ Rouen; INSA Rouen; CNRS, IRCOF, 1 rue Tesnière, 76821 Mont Saint Aignan Cedex, France
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41
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Hesp CR, MacDonald MJ, Zahedi MM, Bilodeau DA, Zhao SB, Pesant M, Beauchemin AM. Formaldehyde as Tethering Organocatalyst: Highly Diastereoselective Hydroaminations of Allylic Amines. Org Lett 2015; 17:5136-9. [PMID: 26417922 DOI: 10.1021/acs.orglett.5b02675] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Catalysts possessing sufficient activity to achieve intermolecular alkene hydroaminations under mild conditions are rare, and this likely accounts for the scarcity of asymmetric variants of this reaction. Herein, highly diastereoselective hydroaminations of allylic amines utilizing hydroxylamines as reagents and formaldehyde as catalyst are reported. This catalyst induces temporary intramolecularity, which results in high rate accelerations, and high diastereocontrol with either chiral allylic amines or chiral hydroxylamines. The reaction scope includes internal alkenes. Overall this work provides a new, stereocontrolled route to form complex vicinal diamines.
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Affiliation(s)
- Colin R Hesp
- Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
| | - Melissa J MacDonald
- Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
| | - M Mehdi Zahedi
- Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
| | - Didier A Bilodeau
- Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
| | - Shu-Bin Zhao
- Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
| | - Marc Pesant
- Boehringer Ingelheim (Canada) Ltd., 2100 Cunard Street, Laval, QC H7S 2G5, Canada
| | - André M Beauchemin
- Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
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42
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Anderson LL. Diverse Applications of Nitrones for the Synthesis of Heterocyclic Compounds. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500211] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Laura L. Anderson
- Department of Chemistry; University of Illinois at Chicago; Chicago IL 60607 USA
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43
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Synthesis and Cytotoxic Activity of Aza-Michael Reaction Products from Ethyl Sorbate and Heterocyclic Amines. Chem Nat Compd 2015. [DOI: 10.1007/s10600-015-1264-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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44
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Wang H, Jiao S, Chen K, Zhang X, Zhao L, Liu D, Zhou Y, Liu H. Direct access to pyrido/pyrrolo[2,1-b]quinazolin-9(1H)-ones through silver-mediated intramolecular alkyne hydroamination reactions. Beilstein J Org Chem 2015; 11:416-24. [PMID: 25977715 PMCID: PMC4419559 DOI: 10.3762/bjoc.11.47] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 03/02/2015] [Indexed: 02/05/2023] Open
Abstract
We report a synthetic methodology for the construction of the fused heterocyclic compounds pyrido[2,1-b]quinazolin-9(1H)-ones and pyrrolo[2,1-b]quinazolin-9(1H)-ones through an AgOTf-catalyzed intramolecular alkyne hydroamination reaction. The methodology is applicable to a wide scope of substrates and produces a series of fused quinazolinone heterocycles in good to excellent yields.
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Affiliation(s)
- Hengshuai Wang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Shengchao Jiao
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
- Shenyang Pharmaceutical University, 103 Wenhua Road, Shengyang 110016, P. R. China
| | - Kerong Chen
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Xu Zhang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Linxiang Zhao
- Shenyang Pharmaceutical University, 103 Wenhua Road, Shengyang 110016, P. R. China
| | - Dan Liu
- Shenyang Pharmaceutical University, 103 Wenhua Road, Shengyang 110016, P. R. China
| | - Yu Zhou
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Hong Liu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
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45
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Huang L, Arndt M, Gooßen K, Heydt H, Gooßen LJ. Late Transition Metal-Catalyzed Hydroamination and Hydroamidation. Chem Rev 2015; 115:2596-697. [DOI: 10.1021/cr300389u] [Citation(s) in RCA: 739] [Impact Index Per Article: 82.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Liangbin Huang
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Matthias Arndt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Käthe Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Heinrich Heydt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Lukas J. Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
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46
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Bernoud E, Lepori C, Mellah M, Schulz E, Hannedouche J. Recent advances in metal free- and late transition metal-catalysed hydroamination of unactivated alkenes. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01716a] [Citation(s) in RCA: 140] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This Perspective article outlines some of the recent advancements in the development of (chiral) metal-free and late transition metal catalysts for hydroamination of unactivated alkenes.
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47
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Wang W, Liang L, Xu F, Huang W, Niu Y, Sun Q, Xu P. Ruthenium-Catalyzed Switchable N-H/C-H Alkenylation of 6-Phenyl(dihydro)pyridazinones with Alkynes. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402986] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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48
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Ickes AR, Ensign SC, Gupta AK, Hull KL. Regio- and chemoselective intermolecular hydroamination of allyl imines for the synthesis of 1,2-diamines. J Am Chem Soc 2014; 136:11256-9. [PMID: 25050740 DOI: 10.1021/ja505794u] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The synthesis of 1,2-diamines via a Rh-catalyzed intermolecular hydroamination of N-allyl imines with cyclic amines is presented. Coordinating groups proximal to the olefin bind to the catalyst and promote the transformation. The reaction affords 1,2-diamines in very good yields and is functional-group-tolerant and highly diastereoselective.
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Affiliation(s)
- Andrew R Ickes
- Department of Chemistry, University of Illinois at Urbana-Champaign , 600 South Mathews Avenue, Urbana, Illinois 61801, United States
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49
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Wang Y, Wei D, Zhang W, Wang Y, Zhu Y, Jia Y, Tang M. A theoretical study on the mechanisms of the reactions between 1,3-dialkynes and ammonia derivatives for the formation of five-membered N-heterocycles. Org Biomol Chem 2014; 12:7503-14. [DOI: 10.1039/c4ob01015a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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50
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Hong L, Shao Y, Zhang L, Zhou X. Ln[N(SiMe3)2]3-Catalyzed Cross-Diinsertion of CN/CC into an NH Bond: Facile Synthesis of 1,2,4-Trisubstituted Imidazoles from Propargylamines and Nitriles. Chemistry 2014; 20:8551-5. [DOI: 10.1002/chem.201402701] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Indexed: 11/09/2022]
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