1
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Liu SH, Dong ZC, Zang ZL, Zhou CH, Cai GX. Selective α-oxidation of amides via visible-light-driven iron catalysis. Org Biomol Chem 2024; 22:1205-1212. [PMID: 38224270 DOI: 10.1039/d3ob01984e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Hydroxyl radicals (˙OH) as one of the highly reactive species can react unselectively with a wide range of chemicals. The ˙OH radicals are typically generated under harsh conditions. Herein, we report hydroxyl radical-induced selective N-α C(sp3)-H bond oxidation of amides under greener and mild conditions via an Fe(NO3)3·9H2O catalyst inner sphere pathway upon irradiation with a 30 W blue LED light strip (λ = 455 nm) using NaBrO3 as the oxidant. This protocol exhibited high chemoselectivity and excellent functional group tolerance. A preliminary mechanism investigation demonstrated that the iron catalyst afforded hydroxyl radicals via the visible-light-induced homolysis (VLIH) of iron complexes followed by a hydrogen atom transfer (HAT) process to realize this transformation.
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Affiliation(s)
- Shu-Hong Liu
- Institute of Bioorganic & Medicinal Chemistry, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - Zhi-Chao Dong
- Institute of Bioorganic & Medicinal Chemistry, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - Zhong-Lin Zang
- Institute of Bioorganic & Medicinal Chemistry, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - Cheng-He Zhou
- Institute of Bioorganic & Medicinal Chemistry, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - Gui-Xin Cai
- Institute of Bioorganic & Medicinal Chemistry, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
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2
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Hitt M, Norris A, Vedernikov AN. Oxidative Imidation of Benzylic and Cycloalkane C(sp 3)-H Bond Donors Using N-Aroyloxyquinuclidinium Salts and Nitriles under Photoredox Catalysis. Org Lett 2023. [PMID: 37467385 DOI: 10.1021/acs.orglett.3c01966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
A series of N-aroyloxyquinuclidinium salts were prepared and used as reagents to perform efficient three-component Ritter-Mumm-type oxidative C-H imidation of donors of 1° and 2° benzylic C-H bonds used as limiting reagents with nitriles as a source of imide nitrogen under photocatalytic conditions; these reagents also exhibit somewhat lower reactivity toward cycloalkanes.
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Affiliation(s)
- Michael Hitt
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Andrew Norris
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Andrei N Vedernikov
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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3
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Sivaraj C, Gandhi T. Solvent-controlled amidation of acid chlorides at room temperature: new route to access aromatic primary amides and imides amenable for late-stage functionalization †. RSC Adv 2023; 13:9231-9236. [PMID: 36959886 PMCID: PMC10028618 DOI: 10.1039/d3ra00403a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 03/06/2023] [Indexed: 03/24/2023] Open
Abstract
Herein, we report a solvent-controlled highly selective amidation and imidation of aroyl chlorides using an alkali-metal silyl-amide reagent (LiHMDS), which serves as a nitrogen source at room temperature. A unique feature of this method lies in the sequential silyl amidation of aryol chlorides and nitrogen–silicon bond cleavage of the corresponding N,N-bis(trimethylsilyl)benzamide in a one-pot method in a very short reaction time. This effective strategy was extended to late-stage functionalization. Herein, we report a solvent-controlled highly selective amidation and imidation of aroyl chlorides using an alkali-metal silyl-amide reagent (LiHMDS), which serves as a nitrogen source at room temperature.![]()
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Affiliation(s)
- Chandrasekaran Sivaraj
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of TechnologyVellore 632014Tamil NaduIndia
| | - Thirumanavelan Gandhi
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of TechnologyVellore 632014Tamil NaduIndia
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4
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Yu A, Zhou N, Liang X, Hua M, Pan X, Jiang Y, Jiang J. Process hazard and decomposition mechanism of benzoyl peroxide in the presence of incompatible substances. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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5
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Lenihan JM, Mailloux MJ, Beeler AB. Multigram Scale Synthesis of Piperarborenines C-E. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jason M. Lenihan
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Matthew J. Mailloux
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Aaron B. Beeler
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
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6
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Lohmann N, Milovanović V, Piekarski DG, García Mancheño O. Metal-free oxoammonium salt-mediated C(sp 3)-H oxidative Ugi-azide multicomponent reaction. Org Biomol Chem 2022; 20:2896-2908. [PMID: 35319061 DOI: 10.1039/d2ob00101b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In this work, an efficient oxidative C(sp3)-H Ugi-azide multicomponent reaction of cyclic benzylic amines to the corresponding α-tetrazolo compounds using a TEMPO salt as mild hydride abstractor-type oxidant is reported. This simple one-pot approach allows the direct functionalization of N-heterocycles such as tetrahydroisoquinolines with a variety of isocyanides and NaN3 as a practical azide source. The reaction proceeds at room temperature and without the need of acid additives, allowing for the use of sensitive substrates, while minimizing isocyanide polymerization to provide the desired heterocycle-tetrazole products in synthetically useful yields (up to 99%).
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Affiliation(s)
- Niklas Lohmann
- University of Münster, Organic Chemistry Institute, Corrensstraße 40, 48149 Münster, Germany.
| | - Vesna Milovanović
- University of Münster, Organic Chemistry Institute, Corrensstraße 40, 48149 Münster, Germany. .,University of Kragujevac, Faculty of Agronomy, Department of Chemistry and Chemical Engineering, Cara Dušana 34, 32000 Čačak, Serbia
| | - Dariusz G Piekarski
- Polish Academy of Sciences, Institute of Physical Chemistry, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Olga García Mancheño
- University of Münster, Organic Chemistry Institute, Corrensstraße 40, 48149 Münster, Germany.
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7
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Tang S, Guillot R, Grimaud L, Vitale MR, Vincent G. Electrochemical Benzylic C-H Functionalization with Isocyanides. Org Lett 2022; 24:2125-2130. [PMID: 35286094 DOI: 10.1021/acs.orglett.2c00364] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We report the challenging direct carbamoylation or cyanation of benzylic C(sp3)-H bonds with an isocyanide via an electrochemical process giving rise to structures that are encountered in several biologically relevant compounds and drugs. This transformation proceeds under mild conditions without the need for any external oxidant and avoids the necessity to start from a prefunctionalized benzylic substrate or the deployment of the cation pool method. The anodic oxidation of the benzylic position and the subsequent addition of the isocyanide lead to the formation of a C-C bond and to a nitrilium cation that hydrolyzes to yield α-aryl acetamide derivatives, whereas the elimination of a t-butyl cation delivers α-aryl acetonitrile derivatives.
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Affiliation(s)
- Shanyu Tang
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 91405 Orsay, France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 91405 Orsay, France
| | - Laurence Grimaud
- Laboratoire des Biomolécules (LBM), Département de Chimie, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Maxime R Vitale
- Laboratoire des Biomolécules (LBM), Département de Chimie, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 91405 Orsay, France
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8
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Massouh J, Petrelli A, Bellière‐Baca V, Hérault D, Clavier H. Rhodium(III)‐Catalyzed Aldehyde C−H Activation and Functionalization with Dioxazolones: An Entry to Imide Synthesis. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Joe Massouh
- Aix Marseille Univ CNRS Centrale Marseille iSm2 Marseille France
| | - Antoine Petrelli
- Adisseo France SAS Antony Parc 2 10 Place du Général de Gaulle 92160 Antony France
| | | | - Damien Hérault
- Aix Marseille Univ CNRS Centrale Marseille iSm2 Marseille France
| | - Hervé Clavier
- Aix Marseille Univ CNRS Centrale Marseille iSm2 Marseille France
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9
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Li Y, Ren X, Chen Y, Zhu X, Hao XQ, Song MP. Fe(III)-Catalyzed N-Amidomethylation of Secondary and Primary Anilines with TosMIC. Org Lett 2021; 24:250-255. [PMID: 34931836 DOI: 10.1021/acs.orglett.1c03910] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A Fe(III)-catalyzed N-amidomethylation of secondary and primary anilines with p-toluenesulfonylmethyl isocyanide (TosMIC) in water is described. TosMIC plays dual roles as the source of methylene as well as an amidating reagent to form α-amino amides in this multicomponent reaction. The combination of TosMIC and other isocyanides was also investigated to give the desired products in acceptable yields. The current protocol features use of iron catalyst and nontoxic media, broad substrate scope, mild conditions, and operational simplicity.
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Affiliation(s)
- Yigao Li
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P.R. China
| | - Xiaohuang Ren
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P.R. China
| | - Yi Chen
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P.R. China
| | - Xinju Zhu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P.R. China
| | - Xin-Qi Hao
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P.R. China
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P.R. China
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10
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Puthanveedu M, Khamraev V, Brieger L, Strohmann C, Antonchick AP. Electrochemical Dehydrogenative C(sp 2 )-H Amination. Chemistry 2021; 27:8008-8012. [PMID: 33931904 PMCID: PMC8251997 DOI: 10.1002/chem.202100960] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Indexed: 02/06/2023]
Abstract
A transition-metal-free direct electrolytic C-H amination involving an electrochemically generated nitrenium ion intermediate has been developed. The electrosynthesis takes place in the absence of any organoiodine catalysts and is enabled by an in situ generated electrolyte. A novel, efficient intramolecular and intermolecular C-H amination has been demonstrated using a simple reaction setup.
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Affiliation(s)
- Mahesh Puthanveedu
- Max-Planck-Institut für Molekulare PhysiologieAbteilung Chemische BiologieOtto-Hahn-Straße 1144227DortmundGermany
- Technische Universität DortmundFakultät für Chemie und Chemische BiologieChemische BiologieOtto-Hahn-Straße 4a44221DortmundGermany
| | - Vladislav Khamraev
- Technische Universität DortmundFakultät für Chemie und Chemische BiologieChemische BiologieOtto-Hahn-Straße 4a44221DortmundGermany
- North Caucasus Federal UniversityDepartment of Chemistry1a Pushkin St.355009StavropolRussian Federation
- Present address: D. I. Mendeleev University of Chemical Technology of Russia9 Miusskaya Square, 125047MoscowRussian Federation
| | - Lukas Brieger
- Technische Universität DortmundFakultät für Chemie und Chemische BiologieAnorganische ChemieOtto-Hahn-Straße 644227DortmundGermany
| | - Carsten Strohmann
- Technische Universität DortmundFakultät für Chemie und Chemische BiologieAnorganische ChemieOtto-Hahn-Straße 644227DortmundGermany
| | - Andrey P. Antonchick
- Max-Planck-Institut für Molekulare PhysiologieAbteilung Chemische BiologieOtto-Hahn-Straße 1144227DortmundGermany
- Technische Universität DortmundFakultät für Chemie und Chemische BiologieChemische BiologieOtto-Hahn-Straße 4a44221DortmundGermany
- Nottingham Trent UniversityCollege of Science and TechnologyDepartment of Chemistry and ForensicsClifton LaneNG11 8NSNottinghamUK
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11
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Pan N, Xinen Lee M, Bunel L, Grimaud L, Vitale MR. Electrochemical TEMPO-Catalyzed Oxidative Ugi-Type Reaction. ACS ORGANIC & INORGANIC AU 2021; 1:18-22. [PMID: 36855635 PMCID: PMC9954374 DOI: 10.1021/acsorginorgau.1c00003] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Oxidative isocyanide-based multicomponent reactions (oxidative IMCRs) are very useful tools for the rapid construction of molecular diversity starting from readily available and stable substrates. Despite all their benefits, such multicomponent reactions are underdeveloped and strictly limited to 3-component processes. Indeed, in the presence of several reaction partners, the oxidation event needs to be rigorously chemoselective, which becomes incredibly more intricate as the number of reactive components increases. Nonetheless, we could overcome this significant pitfall and reach the first oxidative Ugi-type 4-IMCR by capitalizing on a very mild and green TEMPO-catalyzed electro-oxidation process. Employing alcohols as aldehyde surrogates and in the notable absence of any supporting electrolyte, this transformation proved to be extremely chemoselective in the presence of an amine and was compatible with a wide range of alcohols, amines, isocyanides, and carboxylic acids.
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Affiliation(s)
- Na Pan
- Laboratoire des
biomolécules, LBM, Département de chimie, École
Normale Supérieure, PSL University,
Sorbonne Université, CNRS, 75005 Paris, France,Shanghai Engineering Research Center of Molecular Therapeutics and
New Drug Development, SCME, East China Normal
University, 3663 Zhongshanbei Road, Shanghai 200062, China
| | - Maegan Xinen Lee
- Laboratoire des
biomolécules, LBM, Département de chimie, École
Normale Supérieure, PSL University,
Sorbonne Université, CNRS, 75005 Paris, France
| | - Louis Bunel
- Laboratoire des
biomolécules, LBM, Département de chimie, École
Normale Supérieure, PSL University,
Sorbonne Université, CNRS, 75005 Paris, France
| | - Laurence Grimaud
- Laboratoire des
biomolécules, LBM, Département de chimie, École
Normale Supérieure, PSL University,
Sorbonne Université, CNRS, 75005 Paris, France,
| | - Maxime R. Vitale
- Laboratoire des
biomolécules, LBM, Département de chimie, École
Normale Supérieure, PSL University,
Sorbonne Université, CNRS, 75005 Paris, France,
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12
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Kawamura S, Mukherjee S, Sodeoka M. Recent advances in reactions using diacyl peroxides as sources of O- and C-functional groups. Org Biomol Chem 2021; 19:2096-2109. [DOI: 10.1039/d0ob02349c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This review summarizes recent advances in reactions utilizing diacyl peroxides as O- and C-sources, with examples illustrating how the reactivity of diacyl peroxides in organic reactions can be controlled.
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Affiliation(s)
- Shintaro Kawamura
- Catalysis and Integrated Research Group
- RIKEN Center for Sustainable Resource Science
- Wako
- Japan
- Synthetic Organic Chemistry Laboratory
| | - Subrata Mukherjee
- Catalysis and Integrated Research Group
- RIKEN Center for Sustainable Resource Science
- Wako
- Japan
| | - Mikiko Sodeoka
- Catalysis and Integrated Research Group
- RIKEN Center for Sustainable Resource Science
- Wako
- Japan
- Synthetic Organic Chemistry Laboratory
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13
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Abstract
This review highlights the state-of-the-art advances in C(sp3)–H functionalization involving isocyanides through the synergistic combination of isocyanide insertion and C(sp3)–H bond activation.
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Affiliation(s)
- Weixiang Wang
- Department of Chemistry
- Innovative Drug Research Center
- School of Medicine
- Shanghai University
- Shanghai 200444
| | - Tianqi Liu
- Department of Chemistry
- Innovative Drug Research Center
- School of Medicine
- Shanghai University
- Shanghai 200444
| | - Chang-Hua Ding
- Department of Chemistry
- Innovative Drug Research Center
- School of Medicine
- Shanghai University
- Shanghai 200444
| | - Bin Xu
- Department of Chemistry
- Innovative Drug Research Center
- School of Medicine
- Shanghai University
- Shanghai 200444
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14
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Xu K, Xu Z, Zhang M, Yan X, Mao G, Wang T, Wu Y, Liu L. The aerobic oxidative hydroxysulfurization of gem-difluoroalkenes to produce α,α-difluoro-β-hydroxysulfides. Org Chem Front 2021. [DOI: 10.1039/d1qo00676b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The efficient aerobic oxidative hydroxysulfurization of gem-difluoroalkenes with aryl or even alkyl thiols to produce α,α-difluoro-β-hydroxysulfides has been developed.
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Affiliation(s)
- Kai Xu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China
| | - Zhenli Xu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China
| | - Mengzhen Zhang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China
| | - Xiaoxiao Yan
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China
| | - Guoliang Mao
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, P. R. China
| | - Tao Wang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China
| | - Yangjie Wu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Lantao Liu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
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15
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Kallepu S, Neeli PK, Mallappa S, Nagendla NK, Reddy Mudiam MK, Mainkar PS, Kotamraju S, Chandrasekhar S. sp 3 -Rich Glycyrrhetinic Acid Analogues Using Late-Stage Functionalization as Potential Breast Tumor Regressing Agents. ChemMedChem 2020; 15:1826-1833. [PMID: 32893968 DOI: 10.1002/cmdc.202000400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Indexed: 12/28/2022]
Abstract
Late-stage functionalization (LSF) aids drug discovery efforts by introducing functional groups onto C-H bonds on pre-existing skeletons. We adopted the LSF strategy to synthesize analogues of the abundantly available triterpenoid, glycyrrhetinic acid (GA), by introducing aryl groups in the A-ring, expanding the A-ring and selectively activating one methyl group of the gem-dimethyl groups. Intriguingly, two compounds were found to preferentially accumulate in the mitochondrial compartment of MDA-MB-231 breast cancer cells, to cause depolarization of mitochondrial membrane potential and to induce antiproliferative and anti-invasive effects through enhanced mitochondrial superoxide production with parallel depletion of GSH levels. Furthermore, intraperitoneal administration of these two compounds, in comparison with GA, greatly regressed breast tumor growth and metastasis in a SCID mouse model bearing labeled MDA-MB-231 cells.
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Affiliation(s)
- Shivakrishna Kallepu
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
| | - Praveen Kumar Neeli
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110020, India
| | - Sreevidya Mallappa
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110020, India
| | - Narendra Kumar Nagendla
- Department of Analytical & Structural Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110020, India
| | - Mohana Krishna Reddy Mudiam
- Department of Analytical & Structural Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110020, India
| | - Prathama S Mainkar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110020, India
| | - Srigiridhar Kotamraju
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110020, India
| | - Srivari Chandrasekhar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110020, India
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16
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Ellman JA, Ackermann L, Shi BF. The Breadth and Depth of C-H Functionalization. J Org Chem 2020; 84:12701-12704. [PMID: 31623443 DOI: 10.1021/acs.joc.9b02663] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Lutz Ackermann
- Institut fuer Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen
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17
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Lux M, Klussmann M. Additions of Aldehyde-Derived Radicals and Nucleophilic N-Alkylindoles to Styrenes by Photoredox Catalysis. Org Lett 2020; 22:3697-3701. [PMID: 32286834 PMCID: PMC7304929 DOI: 10.1021/acs.orglett.0c01182] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
![]()
The
consecutive addition of acyl radicals and N-alkylindole
nucleophiles to styrenes was established, as well as
some additional radical–nucleophile combinations. Both aryl
and aliphatic aldehydes give reasonable yields. The reaction proceeds
best for α-substituted styrenes, effectively creating a quaternary
all-carbon center. Some iridium-based photoredox systems are catalytically
active; furthermore, a base is needed in this transformation. Radicals
are formed by reductive perester cleavage and hydrogen atom transfer.
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Affiliation(s)
- Marcel Lux
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Martin Klussmann
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
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