1
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Pradhan S, Kweon J, Sahoo MK, Jung H, Heo J, Kim YB, Kim D, Park JW, Chang S. A Formal γ-C-H Functionalization of Carboxylic Acids Guided by Metal-Nitrenoids as an Unprecedented Mechanistic Motif. J Am Chem Soc 2023; 145:28251-28263. [PMID: 38100053 DOI: 10.1021/jacs.3c11628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Harnessing the key intermediates in metal-catalyzed reactions is one of the most essential strategies in the development of selective organic transformations. The nitrogen group transfer reactivity of metal-nitrenoids to ubiquitous C-H bonds allows for diverse C-N bond formation to furnish synthetically valuable aminated products. In this study, we present an unprecedented reactivity of iridium and ruthenium nitrenoids to generate remote carbocation intermediates, which subsequently undergo nucleophile incorporation, thus developing a formal γ-C-H functionalization of carboxylic acids. Mechanistic investigations elucidated a unique singlet metal-nitrenoid reactivity to initiate an abstraction of γ-hydride to form the carbocation intermediate that eventually reacts with a broad range of carbon, nitrogen, and oxygen nucleophiles, as well as biorelevant molecules. Alternatively, the same intermediate can lead to deprotonation to afford β,γ-unsaturated amides in a less nucleophilic solvent.
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Affiliation(s)
- Sourav Pradhan
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Jeonguk Kweon
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Manoj Kumar Sahoo
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Hoimin Jung
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Joon Heo
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Yeong Bum Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Dongwook Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Jung-Woo Park
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Sukbok Chang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
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2
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Ren M, Wang YC, Ren S, Huang K, Liu JB, Qiu G. Metal‐Enabled Romance of Nitrene with Alkyne: Beyond Gold Catalysis. ChemCatChem 2022. [DOI: 10.1002/cctc.202200008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Miaofeng Ren
- JiangXi University of Science and Technology Chemistry CHINA
| | - Yu-Chao Wang
- JiangXi University of Science and Technology Chemistry CHINA
| | - Shangfeng Ren
- JiangXi University of Science and Technology Chemistry CHINA
| | - Keke Huang
- JiangXi University of Science and Technology Chemistry CHINA
| | - Jin-Biao Liu
- JiangXi University of Science and Technology faculty of Materials Metallurgy and Chemistry No.86,Hongqi Ave. 341000 Ganzhou CHINA
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3
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Patterson WJ, Lucas K, Jones VA, Chen Z, Bardelski K, Guarino‐Hotz M, Brindle CS. Triarylmethyl Cation‐Catalyzed Three‐Component Coupling for the Synthesis of Unsymmetrical Bisindolylmethanes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
| | - Kelly Lucas
- Department of Chemistry Trinity College 300 Summit Street Hartford CT 06105 USA
| | - Vanessa A. Jones
- Department of Chemistry Trinity College 300 Summit Street Hartford CT 06105 USA
| | - Zhenghua Chen
- Department of Chemistry Trinity College 300 Summit Street Hartford CT 06105 USA
| | - Kevin Bardelski
- Department of Chemistry Trinity College 300 Summit Street Hartford CT 06105 USA
| | | | - Cheyenne S. Brindle
- Department of Chemistry Trinity College 300 Summit Street Hartford CT 06105 USA
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4
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Athavale SV, Gao S, Liu Z, Mallojjala SC, Hirschi JS, Arnold FH. Biocatalytic, Intermolecular C-H Bond Functionalization for the Synthesis of Enantioenriched Amides. Angew Chem Int Ed Engl 2021; 60:24864-24869. [PMID: 34534409 DOI: 10.1002/anie.202110873] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/16/2021] [Indexed: 11/07/2022]
Abstract
Directed evolution of heme proteins has opened access to new-to-nature enzymatic activity that can be harnessed to tackle synthetic challenges. Among these, reactions resulting from active site iron-nitrenoid intermediates present a powerful strategy to forge C-N bonds with high site- and stereoselectivity. Here we report a biocatalytic, intermolecular benzylic C-H amidation reaction operating at mild and scalable conditions. With hydroxamate esters as nitrene precursors, feedstock aromatic compounds can be converted to chiral amides with excellent enantioselectivity (up to >99 % ee) and high yields (up to 87 %). Kinetic and computational analysis of the enzymatic reaction reveals rate-determining nitrenoid formation followed by stepwise hydrogen atom transfer-mediated C-H functionalization.
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Affiliation(s)
- Soumitra V Athavale
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, California, 91125, USA
| | - Shilong Gao
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, California, 91125, USA
| | - Zhen Liu
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, California, 91125, USA
| | | | - Jennifer S Hirschi
- Department of Chemistry, Binghamton University, Binghamton, New York, 13902, USA
| | - Frances H Arnold
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, California, 91125, USA
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5
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Athavale SV, Gao S, Liu Z, Mallojjala SC, Hirschi JS, Arnold FH. Biocatalytic, Intermolecular C−H Bond Functionalization for the Synthesis of Enantioenriched Amides. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110873] [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)
- Soumitra V. Athavale
- Division of Chemistry and Chemical Engineering California Institute of Technology 1200 East California Boulevard, MC 210-41 Pasadena California 91125 USA
| | - Shilong Gao
- Division of Chemistry and Chemical Engineering California Institute of Technology 1200 East California Boulevard, MC 210-41 Pasadena California 91125 USA
| | - Zhen Liu
- Division of Chemistry and Chemical Engineering California Institute of Technology 1200 East California Boulevard, MC 210-41 Pasadena California 91125 USA
| | | | | | - Frances H. Arnold
- Division of Chemistry and Chemical Engineering California Institute of Technology 1200 East California Boulevard, MC 210-41 Pasadena California 91125 USA
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6
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Iron-catalyzed cross-coupling of N‑methoxy amides and arylboronic acids for the synthesis of N-aryl amides. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111993] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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7
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Hong SY, Hwang Y, Lee M, Chang S. Mechanism-Guided Development of Transition-Metal-Catalyzed C-N Bond-Forming Reactions Using Dioxazolones as the Versatile Amidating Source. Acc Chem Res 2021; 54:2683-2700. [PMID: 33979133 DOI: 10.1021/acs.accounts.1c00198] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Catalytic reactions that construct carbon-nitrogen bonds are one of central themes in both synthetic and medicinal chemistry since the obtainable nitrogen-containing motifs are commonly encountered in natural products and have also seen a growing prominence as key structural features in marketed drugs and preclinical candidates. Pd-catalyzed cross-couplings, such as Buchwald-Hartwig amination, are at the forefront of such synthetic methods in practical settings. However, they require prefunctionalized substrates such as (hetero)aryl halides that must be prepared independently, often by multiple operations. One emerging way to circumvent these preparatory steps and directly convert ubiquitous C-H bonds into valuable C-N bonds is catalytic C-H amination, which allows synthetic chemists to devise shorter and more efficient retrosynthetic schemes. The past two decades have witnessed considerable progress in expanding the repertoire of this strategy, especially by identifying effective amino group precursors. In this context, dioxazolones have experienced a dramatic resurgence in recent years as a versatile nitrogen source in combination with transition-metal catalyst systems that facilitate decarboxylation to access key metal-acylnitrenoid intermediates. In addition to their high robustness and easy accessibility from abundant carboxylic acids, the unique reactivity of the transient intermediates in the amido group transfer has led to a fruitful journey for mild and efficient C-H amidation reactions.This Account summarizes our recent contributions to the development of C-N bond-forming reactions using dioxazolones as effective nitrenoid precursors, which are categorized into two subsets according to their mechanistic differences: inner- versus outer-sphere pathways. The first section describes how we could unveil the synthetic potential of dioxazolones in the realm of the inner-sphere C-H amidation, where we demonstrated that dioxazolones serve not only as manageable alternatives to acyl azides but also as highly efficient reagents to significantly reduce the catalyst loading and temperature. Taking advantage of the mild conditions in combination with group 9 Cp*M complexes (M = Rh, Ir, Co) or isoelectronic Ru species, we have dramatically expanded the accessible synthetic scope. Mechanistic investigations revealed that the putative metal-nitrenoid species is involved as a key intermediate during catalysis, which leads to facile C-N bond formation. On the basis of the mechanistic underpinning, we have succeeded in developing novel catalytic platforms that harness the intermediacy of metal-nitrenoids to explore C-H insertion chemistry via an outer-sphere pathway. Indeed, the tailored catalysts were capable of suppressing the competitive Curtius-type decomposition, thus granting access to versatile lactam products. We have further repurposed the catalytic systems upon modification of chelating ligands and also the identity of the transition metal to achieve three goals: (i) addressing selectivity issues to control the regio-, chemo-, and enantioselectivities, (ii) developing sustainable catalysis by first-low metals, and (iii) navigating chemical space for (di)functionalization of alkenes/alkynes. Together with our own research efforts, highlighted herein are some important relevant advances by other groups. We finally conclude with a brief overview with an eye toward further developments.
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Affiliation(s)
- Seung Youn Hong
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Yeongyu Hwang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Minhan Lee
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Sukbok Chang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
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8
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Magallón C, Planas O, Roldán-Gómez S, Luis JM, Company A, Ribas X. Well-Defined Aryl-Fe II Complexes in Cross-Coupling and C–H Activation Processes. Organometallics 2021; 40:1195-1200. [PMID: 36158566 PMCID: PMC9490821 DOI: 10.1021/acs.organomet.1c00100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
![]()
Herein
we explore the intrinsic organometallic reactivity of iron
embedded in a tetradentate N3C macrocyclic ligand scaffold
that allows the stabilization of aryl-Fe species, which are key intermediates
in Fe-catalyzed cross-coupling and C–H functionalization processes.
This study covers C–H activation reactions using MeLH and FeCl2, biaryl C–C coupling product formation through reaction
with Grignard reagents, and cross-coupling reactions using MeLBr or HLBr in combination
with Fe0(CO)5. Synthesis under light irradiation
and moderate heating (50 °C) affords the aryl-FeII complexes [FeII(Br)(MeL)(CO)] (1Me) and [FeII(HL)(CO)2]Br (1H). Exhaustive spectroscopic characterization
of these rare low-spin diamagnetic species, including their crystal
structures, allowed the investigation of their intrinsic reactivity.
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Affiliation(s)
- Carla Magallón
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17003, Catalonia, Spain
| | - Oriol Planas
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17003, Catalonia, Spain
| | - Steven Roldán-Gómez
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17003, Catalonia, Spain
| | - Josep M. Luis
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17003, Catalonia, Spain
| | - Anna Company
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17003, Catalonia, Spain
| | - Xavi Ribas
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17003, Catalonia, Spain
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9
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Ma N, Liu Z, Huang J, Dang Y. Mechanistic studies of Cp*Ir(III)/Cp*Rh(III)-catalyzed branch-selective allylic C-H amidation: why is Cp*Ir(III) superior to Cp*Rh(III)? Org Biomol Chem 2021; 19:3850-3858. [PMID: 33949601 DOI: 10.1039/d1ob00446h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Density functional theory calculations have revealed the mechanism and origins of the reactivity and regioselectivity of the Cp*Ir(iii)/Cp*Rh(iii)-catalyzed allylic C-H amidation of alkenes and dioxazolones. Generally, the catalytic cycle consists of alkene coordination, C(sp3)-H activation, dioxazolone oxidative addition, reductive elimination and proto-demetallation to give the final amidation product. The C-H activation is found to be the rate-determining step, and it controls the reactivity of the reaction. For the Cp*Ir(iii)-catalyzed system, the C-H activation undergoes an Ir(iii)-assisted proton transfer process with a low energy barrier, elucidating its high reactivity. In contrast, the C-H activation step is more like a direct deprotonation in the Cp*Rh(iii)-catalyzed system, which is responsible for its higher barrier and lower reactivity. The branched-selectivity arises from the electronic effect of the alkyl group on the charge distribution over the allylic moiety. Herein, iridium(v) polarizes the allylic group greater than that of the rhodium(v) system, which accounts for its good regioselectivity. The mechanistic insights will be useful for the further development of transition metal-catalyzed selective C-H amination reactions.
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Affiliation(s)
- Nan Ma
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China. and School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Zheyuan Liu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China.
| | - Jianhui Huang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Yanfeng Dang
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China.
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10
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Liu JB, Ren M, Lai X, Qiu G. Iron-catalyzed stereoselective haloamidation of amide-tethered alkynes. Chem Commun (Camb) 2021; 57:4259-4262. [PMID: 33913970 DOI: 10.1039/d1cc00870f] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this work, by using N-methoxybenzamides as efficient acyl nitrene precursors, an iron-catalyzed formal cis-haloamidation of alkyne is reported. Without assistance of additives, the reaction worked well in the presence of 50 mol% FeCl3 or FeBr3, leading to a series of chloro/bromo-containing isoindolin-5-ones with high efficiency and wide reaction scope. In the reaction, the iron-facilitated haloamidation proceeds through a halo anion-participating concerted [3+2] cyclization to release the final products. The key intermediate ferric acyl nitrene A is generated in situ from a formal removal of MeOH.
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Affiliation(s)
- Jin-Biao Liu
- School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Miaofeng Ren
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Xiaojing Lai
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Guanyinsheng Qiu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
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11
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Kim S, Kim D, Hong SY, Chang S. Tuning Orbital Symmetry of Iridium Nitrenoid Enables Catalytic Diastereo- and Enantioselective Alkene Difunctionalizations. J Am Chem Soc 2021; 143:3993-4004. [DOI: 10.1021/jacs.1c00652] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Suhyeon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Dongwook Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Seung Youn Hong
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
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12
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Wang YC, Lai XJ, Huang K, Yadav S, Qiu G, Zhang L, Zhou H. Unravelling nitrene chemistry from acyclic precursors: recent advances and challenges. Org Chem Front 2021. [DOI: 10.1039/d0qo01360a] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Recent advances in nitrene chemistry from acyclic precursors are reviewed in this paper.
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Affiliation(s)
- Yu-Chao Wang
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Xiao-Jing Lai
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Keke Huang
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Sarita Yadav
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Guanyinsheng Qiu
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Lianpeng Zhang
- School of Materials Science and Engineering
- Southwest Forestry University
- Kunming 650224
- China
| | - Hongwei Zhou
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
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13
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Kweon J, Chang S. Highly Robust Iron Catalyst System for Intramolecular C(sp
3
)−H Amidation Leading to γ‐Lactams. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202013499] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Jeonguk Kweon
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Sukbok Chang
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
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14
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Kweon J, Chang S. Highly Robust Iron Catalyst System for Intramolecular C(sp
3
)−H Amidation Leading to γ‐Lactams. Angew Chem Int Ed Engl 2020; 60:2909-2914. [DOI: 10.1002/anie.202013499] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Indexed: 01/07/2023]
Affiliation(s)
- Jeonguk Kweon
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Sukbok Chang
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
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15
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Indurthi HK, Virdi R, Koli P, Nageswara Rao D, Sharma DK. Seralite SRC-120 resin catalyzed synthesis of bis(indolyl)methanes using indoles and low/high boiling point carbonyl compounds under solvent free conditions. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1849724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Harish K. Indurthi
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi, India
| | - Reena Virdi
- Overseas Healthcare Pvt Ltd, Phillaur, India
| | - Papita Koli
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi, India
| | - Desaboini Nageswara Rao
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Deepak K Sharma
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi, India
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16
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Catalytic efficiency of β-cyclodextrin hydrate-chemoselective reaction of indoles with aldehydes in aqueous medium. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152231] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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van Vliet KM, Polak LH, Siegler MA, van der Vlugt JI, Guerra CF, de Bruin B. Efficient Copper-Catalyzed Multicomponent Synthesis of N-Acyl Amidines via Acyl Nitrenes. J Am Chem Soc 2019; 141:15240-15249. [PMID: 31465210 PMCID: PMC6764152 DOI: 10.1021/jacs.9b07140] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
![]()
Direct
synthetic routes to amidines are desired, as they are widely
present in many biologically active compounds and organometallic complexes. N-Acyl amidines in particular can be used as a starting
material for the synthesis of heterocycles and have several other
applications. Here, we describe a fast and practical copper-catalyzed
three-component reaction of aryl acetylenes, amines, and easily accessible
1,4,2-dioxazol-5-ones to N-acyl amidines, generating
CO2 as the only byproduct. Transformation of the dioxazolones
on the Cu catalyst generates acyl nitrenes that rapidly insert into
the copper acetylide Cu–C bond rather than undergoing an undesired
Curtius rearrangement. For nonaromatic dioxazolones, [Cu(OAc)(Xantphos)]
is a superior catalyst for this transformation, leading to full substrate
conversion within 10 min. For the direct synthesis of N-benzoyl amidine derivatives from aromatic dioxazolones, [Cu(OAc)(Xantphos)]
proved to be inactive, but moderate to good yields were obtained when
using simple copper(I) iodide (CuI) as the catalyst. Mechanistic studies
revealed the aerobic instability of one of the intermediates at low
catalyst loadings, but the reaction could still be performed in air
for most substrates when using catalyst loadings of 5 mol %. The herein
reported procedure not only provides a new, practical, and direct
route to N-acyl amidines but also represents a new
type of C–N bond formation.
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Affiliation(s)
- Kaj M van Vliet
- Homogeneous, Supramolecular and Bio-inspired Catalysis Group (HomKat), van 't Hoff Institute for Molecular Sciences (HIMS) , Universiteit van Amsterdam (UvA) , Amsterdam 1012 WX , The Netherlands
| | - Lara H Polak
- Homogeneous, Supramolecular and Bio-inspired Catalysis Group (HomKat), van 't Hoff Institute for Molecular Sciences (HIMS) , Universiteit van Amsterdam (UvA) , Amsterdam 1012 WX , The Netherlands
| | - Maxime A Siegler
- Department of Chemistry , John Hopkins University , Baltimore , Maryland 21218 , United States
| | - Jarl Ivar van der Vlugt
- Homogeneous, Supramolecular and Bio-inspired Catalysis Group (HomKat), van 't Hoff Institute for Molecular Sciences (HIMS) , Universiteit van Amsterdam (UvA) , Amsterdam 1012 WX , The Netherlands
| | - Célia Fonseca Guerra
- Department of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling , Vrije Universiteit Amsterdam (VU) , De Boelelaan 1083 , 1081 HV Amsterdam , The Netherlands.,Leiden Institute of Chemistry, Gorlaeus Laboratories , Úniversiteit Leiden , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
| | - Bas de Bruin
- Homogeneous, Supramolecular and Bio-inspired Catalysis Group (HomKat), van 't Hoff Institute for Molecular Sciences (HIMS) , Universiteit van Amsterdam (UvA) , Amsterdam 1012 WX , The Netherlands
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18
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Sanjosé-Orduna J, Mudarra ÁL, Martínez de Salinas S, Pérez-Temprano MH. Sustainable Knowledge-Driven Approaches in Transition-Metal-Catalyzed Transformations. CHEMSUSCHEM 2019; 12:2882-2897. [PMID: 31094085 DOI: 10.1002/cssc.201900914] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/10/2019] [Indexed: 06/09/2023]
Abstract
The sustainable synthesis of relevant scaffolds for their use in the pharmaceutical, agrochemical, and materials sectors constitutes one of the most urgent challenges that the chemical community needs to overcome. In this context, the development of innovative and more efficient catalytic processes based on a fundamental understanding of the underlying reaction mechanisms remains a largely unresolved challenge for academic and industrial chemists. Herein, selected examples of computational and experimental knowledge-driven approaches for the rational design of transition-metal-catalyzed transformations are discussed.
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Affiliation(s)
- Jesús Sanjosé-Orduna
- Institute of Chemical Research of Catalonia, ICIQ), Avgda. Països Catalans 16, 43007, Tarragona, Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, C/ Marcel⋅lí Domingo s/n, 43007, Tarragona, Spain
| | - Ángel L Mudarra
- Institute of Chemical Research of Catalonia, ICIQ), Avgda. Països Catalans 16, 43007, Tarragona, Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, C/ Marcel⋅lí Domingo s/n, 43007, Tarragona, Spain
| | - Sara Martínez de Salinas
- Institute of Chemical Research of Catalonia, ICIQ), Avgda. Països Catalans 16, 43007, Tarragona, Spain
| | - Mónica H Pérez-Temprano
- Institute of Chemical Research of Catalonia, ICIQ), Avgda. Països Catalans 16, 43007, Tarragona, Spain
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19
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Huh S, Hong SY, Chang S. Synthetic Utility of N-Benzoyloxyamides as an Alternative Precursor of Acylnitrenoids for γ-Lactam Formation. Org Lett 2019; 21:2808-2812. [DOI: 10.1021/acs.orglett.9b00791] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Soohee Huh
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Seung Youn Hong
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
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20
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Ali R, Ahamad MZ, Singh S, Haq W. Regioselective Synthesis of Symmetrical and Unsymmetrical Bis(heteroaryl)methane (BHM)-Containing Amino Acids. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Rafat Ali
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; -226031 Lucknow India
| | - Mohd. Zisan Ahamad
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; -226031 Lucknow India
| | - Shalini Singh
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; -226031 Lucknow India
| | - Wahajul Haq
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; -226031 Lucknow India
- Academy of Scientific and Innovative Research; -11000 New Delhi India
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21
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Xing Q, Chan CM, Yeung YW, Yu WY. Ruthenium(II)-Catalyzed Enantioselective γ-Lactams Formation by Intramolecular C–H Amidation of 1,4,2-Dioxazol-5-ones. J Am Chem Soc 2019; 141:3849-3853. [DOI: 10.1021/jacs.9b00535] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Qi Xing
- State Key Laboratory of Chemical Biology and Drug
Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Chun-Ming Chan
- State Key Laboratory of Chemical Biology and Drug
Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Yiu-Wai Yeung
- State Key Laboratory of Chemical Biology and Drug
Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Wing-Yiu Yu
- State Key Laboratory of Chemical Biology and Drug
Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
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22
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Asymmetric formation of γ-lactams via C–H amidation enabled by chiral hydrogen-bond-donor catalysts. Nat Catal 2019. [DOI: 10.1038/s41929-019-0230-x] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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23
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Lei H, Rovis T. Ir-Catalyzed Intermolecular Branch-Selective Allylic C-H Amidation of Unactivated Terminal Olefins. J Am Chem Soc 2019; 141:2268-2273. [PMID: 30715868 DOI: 10.1021/jacs.9b00237] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
An efficient method for intermolecular branch-selective allylic C-H amidation has been accomplished via Ir(III) catalysis. The reaction proceeds through initial allylic C-H activation, supported by the isolation and crystallographic characterization of an allyl-Ir(III) intermediate, followed by a subsequent oxidative amidation with readily available dioxazolones as nitrenoid precursors. A diverse range of amides are successfully installed at the branched position of terminal alkenes in good yields and regioselectivities. Importantly, the reaction allows the use of amide-derived nitrenoid precursors avoiding problematic Curtius-type rearrangements.
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Affiliation(s)
- Honghui Lei
- Department of Chemistry , Columbia University , New York , New York 10027 , United States
| | - Tomislav Rovis
- Department of Chemistry , Columbia University , New York , New York 10027 , United States
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24
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Baek Y, Kim J, Hyunseok Kim, Jung SJ, Ryu H, Kim S, Son JY, Um K, Han SH, Seo HJ, Heo J, Lee K, Baik MH, Lee PH. Selective C-C bond formation from rhodium-catalyzed C-H activation reaction of 2-arylpyridines with 3-aryl-2 H-azirines. Chem Sci 2019; 10:2678-2686. [PMID: 30996984 PMCID: PMC6419924 DOI: 10.1039/c8sc05142a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 01/05/2019] [Indexed: 12/02/2022] Open
Abstract
A novel method for the synthesis of acylmethyl-substituted 2-arylpyridine derivatives using 3-aryl-2H-azirines was developed.
A novel method for the synthesis of acylmethyl-substituted 2-arylpyridine derivatives using 3-aryl-2H-azirines was developed by exploring a prototype reaction using DFT-calculations and carrying out targeted experiments guided by the calculated mechanism. 2H-Azirine was initially hypothesized to ring-open at the metal center to furnish familiar metal nitrene complexes that may undergo C–N coupling. Computational studies quickly revealed and prototype experimental work confirmed that neither the formation of the expected metal nitrene complexes nor the C–N coupling were viable. Instead, azirine ring-opening followed by C–C coupling was found to be much more favorable to give imines that readily underwent hydrolysis in aqueous conditions to form acylmethyl-substituted products. This new method was highly versatile and selective toward a wide range of substrates with high functional group tolerance. The utility of the new method is demonstrated by a convenient one-pot synthesis of biologically relevant heterocycles such as pyridoisoindole and pyridoisoqunolinone.
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Affiliation(s)
- Yonghyeon Baek
- National Creative Research Initiative Center for Catalytic Organic Reactions , Department of Chemistry , Kangwon National University , Chuncheon 24341 , Republic of Korea .
| | - Jinwoo Kim
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea . .,Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon 34141 , Republic of Korea
| | - Hyunseok Kim
- National Creative Research Initiative Center for Catalytic Organic Reactions , Department of Chemistry , Kangwon National University , Chuncheon 24341 , Republic of Korea .
| | - Seung Jin Jung
- National Creative Research Initiative Center for Catalytic Organic Reactions , Department of Chemistry , Kangwon National University , Chuncheon 24341 , Republic of Korea .
| | - Ho Ryu
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea . .,Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon 34141 , Republic of Korea
| | - Suyeon Kim
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea . .,Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon 34141 , Republic of Korea
| | - Jeong-Yu Son
- National Creative Research Initiative Center for Catalytic Organic Reactions , Department of Chemistry , Kangwon National University , Chuncheon 24341 , Republic of Korea .
| | - Kyusik Um
- National Creative Research Initiative Center for Catalytic Organic Reactions , Department of Chemistry , Kangwon National University , Chuncheon 24341 , Republic of Korea .
| | - Sang Hoon Han
- National Creative Research Initiative Center for Catalytic Organic Reactions , Department of Chemistry , Kangwon National University , Chuncheon 24341 , Republic of Korea .
| | - Hyung Jin Seo
- National Creative Research Initiative Center for Catalytic Organic Reactions , Department of Chemistry , Kangwon National University , Chuncheon 24341 , Republic of Korea .
| | - Juyoung Heo
- National Creative Research Initiative Center for Catalytic Organic Reactions , Department of Chemistry , Kangwon National University , Chuncheon 24341 , Republic of Korea .
| | - Kooyeon Lee
- Department of Bio-Health Technology , Kangwon National University , Chuncheon 24341 , Republic of Korea
| | - Mu-Hyun Baik
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea . .,Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon 34141 , Republic of Korea
| | - Phil Ho Lee
- National Creative Research Initiative Center for Catalytic Organic Reactions , Department of Chemistry , Kangwon National University , Chuncheon 24341 , Republic of Korea .
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25
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Guo S, Fang Z, Zhou B, Hua J, Dai Z, Yang Z, Liu C, He W, Guo K. Cu/Pd-Catalyzed chemoselective synthesis of C-3 dicarbonyl indoles and bis(indolyl)alkanes from aldehydes and indoles. Org Chem Front 2019. [DOI: 10.1039/c8qo01206g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel Cu/Pd-catalyzed chemoselective synthesis of C-3 dicarbonyl indoles and bis(indolyl)alkanes from aldehydes and indoles has been achieved, which has good substrate universality and high efficacy on large-scale.
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Affiliation(s)
- Shiyu Guo
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- PR China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- PR China
| | - Bochao Zhou
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- PR China
| | - Jiawei Hua
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- PR China
| | - Zhongxue Dai
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- PR China
| | - Zhao Yang
- College of Engineering
- China Pharmaceutical University
- Nanjing 210003
- PR China
| | - Chengkou Liu
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- PR China
| | - Wei He
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- PR China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- PR China
- State Key Laboratory of Materials-Oriented Chemical Engineering
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26
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Hwang Y, Park Y, Kim YB, Kim D, Chang S. Revisiting Arene C(sp2
)−H Amidation by Intramolecular Transfer of Iridium Nitrenoids: Evidence for a Spirocyclization Pathway. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808892] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yeongyu Hwang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Yoonsu Park
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Yeong Bum Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Dongwook Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Sukbok Chang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
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27
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Hwang Y, Park Y, Kim YB, Kim D, Chang S. Revisiting Arene C(sp2
)−H Amidation by Intramolecular Transfer of Iridium Nitrenoids: Evidence for a Spirocyclization Pathway. Angew Chem Int Ed Engl 2018; 57:13565-13569. [DOI: 10.1002/anie.201808892] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Yeongyu Hwang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Yoonsu Park
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Yeong Bum Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Dongwook Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Sukbok Chang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
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28
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Yu M, Zhang T, Jalani HB, Dong X, Lu H, Li G. Iridium-Catalyzed Aryl C–H Sulfonamidation and Amide Formation Using a Bifunctional Nitrogen Source. Org Lett 2018; 20:4828-4832. [DOI: 10.1021/acs.orglett.8b01977] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Meng Yu
- Institute of Chemistry & BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Tao Zhang
- Institute of Chemistry & BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Hitesh B. Jalani
- Department of Chemistry and Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | - Xunqing Dong
- Institute of Chemistry & BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Hongjian Lu
- Institute of Chemistry & BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Guigen Li
- Institute of Chemistry & BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
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29
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Pillaiyar T, Gorska E, Schnakenburg G, Müller CE. General Synthesis of Unsymmetrical 3,3'-(Aza)diindolylmethane Derivatives. J Org Chem 2018; 83:9902-9913. [PMID: 30025207 DOI: 10.1021/acs.joc.8b01349] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Diindolylmethane (DIM) and its derivatives have recently been in the focus of interest due to their significant biological activities, specifically in cancer prevention and therapy. Molecular targets of DIM have been identified, e.g., the immunostimulatory G protein-coupled receptor GPR84. However, most of the reported and investigated DIM derivatives are symmetrical because general methods for obtaining unsymmetrical DIMs have been lacking. To optimize the interaction of DIM derivatives with their protein targets, unsymmetrical substitution is required. In the present study we developed a new, mild and efficient access to unsymmetrically substituted 3,3'-DIMs by reaction of (3-indolylmethyl)trimethylammonium iodides with a wide range of substituted indole derivatives. 7-Azaindole also led to the 3,3'-connected DIM analogue, while 4- and 5-azaindoles reacted at the N1-nitrogen atom as confirmed by X-ray crystallography. The reactions were performed in water without the requirement of a catalyst or other additives. Wide substrate scope, operational simplicity, environmentally benign workup, and high yields are further advantages of the new method. The synthetic protocol proved to be suitable for upscaling to yield gram amounts for pharmacological studies. This procedure will allow the preparation of a broad range of novel, unsymmetrical DIM derivatives to exploit their potential as novel drugs.
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Affiliation(s)
- Thanigaimalai Pillaiyar
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I , University of Bonn , An der Immenburg 4 , D-53121 Bonn , Germany
| | - Ewelina Gorska
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I , University of Bonn , An der Immenburg 4 , D-53121 Bonn , Germany
| | - Gregor Schnakenburg
- Institute of Inorganic Chemistry , University of Bonn , Gerhard-Domagk-Str. 1 , D-53121 Bonn , Germany
| | - Christa E Müller
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I , University of Bonn , An der Immenburg 4 , D-53121 Bonn , Germany
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30
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Hong SY, Park Y, Hwang Y, Kim YB, Baik MH, Chang S. Selective formation of γ-lactams via C-H amidation enabled by tailored iridium catalysts. Science 2018; 359:1016-1021. [PMID: 29496875 DOI: 10.1126/science.aap7503] [Citation(s) in RCA: 229] [Impact Index Per Article: 38.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 12/01/2017] [Accepted: 01/05/2018] [Indexed: 01/14/2023]
Abstract
Intramolecular insertion of metal nitrenes into carbon-hydrogen bonds to form γ-lactam rings has traditionally been hindered by competing isocyanate formation. We report the application of theory and mechanism studies to optimize a class of pentamethylcyclopentadienyl iridium(III) catalysts for suppression of this competing pathway. Modulation of the stereoelectronic properties of the auxiliary bidentate ligands to be more electron-donating was suggested by density functional theory calculations to lower the C-H insertion barrier favoring the desired reaction. These catalysts transform a wide range of 1,4,2-dioxazol-5-ones, carbonylnitrene precursors easily accessible from carboxylic acids, into the corresponding γ-lactams via sp3 and sp2 C-H amidation with exceptional selectivity. The power of this method was further demonstrated by the successful late-stage functionalization of amino acid derivatives and other bioactive molecules.
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Affiliation(s)
- Seung Youn Hong
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea, and Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Yoonsu Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea, and Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Yeongyu Hwang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea, and Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Yeong Bum Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea, and Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea, and Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea.
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea, and Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea.
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31
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Ghosh AK, Sarkar A, Brindisi M. The Curtius rearrangement: mechanistic insight and recent applications in natural product syntheses. Org Biomol Chem 2018; 16:2006-2027. [PMID: 29479624 PMCID: PMC5864567 DOI: 10.1039/c8ob00138c] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The Curtius rearrangement is a versatile reaction in which a carboxylic acid can be converted to an isocyanate through an acyl azide intermediate under mild conditions. The resulting stable isocyanate can then be readily transformed into a variety of amines and amine derivatives including urethanes and ureas. There have been wide-ranging applications of the Curtius rearrangement in the synthesis of natural products and their derivatives. Also, this reaction has been extensively utilized in the synthesis and application of a variety of biomolecules. In this review, we present mechanistic studies, chemical methodologies and reagents for the synthesis of isocyanates from carboxylic acids, the conversion of isocyanates to amines and amine derivatives, and their applications in the synthesis of bioactive natural products and their congeners.
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Affiliation(s)
- Arun K Ghosh
- Department of Chemistry and Department of Medicinal Chemistry, Purdue University, West Lafayette, Indiana 47907, USA.
| | - Anindya Sarkar
- Department of Chemistry and Department of Medicinal Chemistry, Purdue University, West Lafayette, Indiana 47907, USA.
| | - Margherita Brindisi
- Department of Chemistry and Department of Medicinal Chemistry, Purdue University, West Lafayette, Indiana 47907, USA.
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32
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Zhang Y, Yang X, Zhou H, Li S, Zhu Y, Li Y. Visible light-induced aerobic oxidative cross-coupling of glycine derivatives with indoles: a facile access to 3,3′ bisindolylmethanes. Org Chem Front 2018. [DOI: 10.1039/c8qo00341f] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rapid synthesis of 3,3′-bisindolylmethanes is achieved via a photocatalyzed double Friedel–Crafts alkylation reaction between glycine derivatives and indoles.
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Affiliation(s)
- Yuan Zhang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xiaorong Yang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Huang Zhou
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Shilin Li
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yin Zhu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Ying Li
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
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33
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Tran PH, Nguyen XTT, Chau DKN. A Brønsted-Acidic Ionic Liquid Gel as an Efficient and Recyclable Heterogeneous Catalyst for the Synthesis of Bis(indolyl)methanes under Solvent-Free Sonication. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700596] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Phuong Hoang Tran
- Department of Organic Chemistry; Faculty of Chemistry; University of Science, Vietnam National University; Ho Chi Minh City 721337 Vietnam
| | - Xuan-Trang Thi Nguyen
- Department of Organic Chemistry; Faculty of Chemistry; University of Science, Vietnam National University; Ho Chi Minh City 721337 Vietnam
| | - Duy-Khiem Nguyen Chau
- Department of Organic Chemistry; Faculty of Chemistry; University of Science, Vietnam National University; Ho Chi Minh City 721337 Vietnam
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34
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Ye L, Cai SH, Wang DX, Wang YQ, Lai LJ, Feng C, Loh TP. Photoredox Catalysis Induced Bisindolylation of Ethers/Alcohols via Sequential C-H and C-O Bond Cleavage. Org Lett 2017; 19:6164-6167. [PMID: 29112428 DOI: 10.1021/acs.orglett.7b03073] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A visible-light-engaged 2-fold site-selective alkylation of indole derivatives with aliphatic ethers or alcohols has been accomplished for easy access to symmetric 3,3'-bisindolylmethane derivatives. The experimental data suggest a sequential photoredox catalysis induced radical addition and proton-mediated Friedel-Crafts alkylation mechanism.
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Affiliation(s)
- Lu Ye
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University , Nanjing 211816, P. R. China
| | - Sai-Hu Cai
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University , Nanjing 211816, P. R. China.,Department of Chemistry, University of Science and Technology of China , Hefei 230026, P. R. China
| | - Ding-Xing Wang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University , Nanjing 211816, P. R. China
| | - Yi-Qiu Wang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University , Nanjing 211816, P. R. China
| | - Lin-Jie Lai
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University , Nanjing 211816, P. R. China
| | - Chao Feng
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University , Nanjing 211816, P. R. China
| | - Teck-Peng Loh
- Department of Chemistry, University of Science and Technology of China , Hefei 230026, P. R. China.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore
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35
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Rodrigues AM, Rohée C, Fabre T, Batailler N, Sautel F, Carletti I, Nogues S, Suzuki MT, Stien D. Cytotoxic indole alkaloids from Pseudovibrio denitrificans BBCC725. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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36
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Zhang Y, Zhang SX, Fu LN, Guo QX. Highly Efficient Atom-Economic Synthesis of Chiral Bis(indolyl)methanes Bearing Quaternary Stereogenic Carbon Centers. ChemCatChem 2017. [DOI: 10.1002/cctc.201700368] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Yan Zhang
- Key Laboratory of Applied Chemistry of Chongqing Municipality; School of Chemistry and Chemical Engineering; Southwest University Institution; Chongqing 400715 China
| | - Si-Xiang Zhang
- Key Laboratory of Applied Chemistry of Chongqing Municipality; School of Chemistry and Chemical Engineering; Southwest University Institution; Chongqing 400715 China
| | - Li-Na Fu
- Key Laboratory of Applied Chemistry of Chongqing Municipality; School of Chemistry and Chemical Engineering; Southwest University Institution; Chongqing 400715 China
| | - Qi-Xiang Guo
- Key Laboratory of Applied Chemistry of Chongqing Municipality; School of Chemistry and Chemical Engineering; Southwest University Institution; Chongqing 400715 China
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37
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Zou X, Zou J, Yang L, Li G, Lu H. Thermal Rearrangement of Sulfamoyl Azides: Reactivity and Mechanistic Study. J Org Chem 2017; 82:4677-4688. [PMID: 28414236 DOI: 10.1021/acs.joc.7b00308] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The rearrangement of sulfamoyl azides under thermal conditions to form a C-C bond while breaking two C-N bonds is reported. Mechanistic study shows that this reaction goes through a Curtius-type rearrangement to form a 1,1-diazene, then which rearranges possibly through both a concerted rearrangement process and a stepwise radical process. This rearrangement could be used in the synthesis of complex biologically active molecules, such as sterols, and piperine derivatives.
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Affiliation(s)
- Xiaodong Zou
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
| | - Jiaqi Zou
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
| | - Lizheng Yang
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
| | - Guigen Li
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
| | - Hongjian Lu
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
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38
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Singh RR, Liu RS. Gold-catalyzed oxidative couplings of two indoles with one aryldiazo cyanide under oxidant-free conditions. Chem Commun (Camb) 2017; 53:4593-4596. [DOI: 10.1039/c7cc01304c] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
In the absence of external oxidants, gold-catalyzed oxidative couplings of two indoles with one phenyldiazo cyanide are described; these annulations work well with a good range of diazo and indole species.
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Affiliation(s)
| | - Rai-Shung Liu
- Department of Chemistry
- National Tsing-Hua University
- Hsinchu
- Republic of China
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