1
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Zhang S, Zhang G, Wang J, Feng Y, Zhang Z, Xie S, Lin Z, Yang S, Lin J, Lin H. Native Amino Group Directed Meta-Selective C-H Arylation of Primary Amines Via Pd/Norbornene Catalysis. Org Lett 2024; 26:2495-2499. [PMID: 38506235 DOI: 10.1021/acs.orglett.4c00721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
The selective functionalization of remote C-H bonds in free primary amines holds significant promise for the late-stage diversification of pharmaceuticals. However, to date, the direct functionalization of the meta position of amine substrates lacking additional directing groups remains underexplored. In this Letter, we present a successful meta-C-H arylation of free primary amine derivatives using aryl iodides, resulting in synthetically valuable yields. This meta-selective C-H functionalization is achieved through a sequence involving native amino-directed Pd-catalyzed seven-membered cyclometalation, followed by the utilization of a norbornene-type transient mediator.
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Affiliation(s)
- Shasha Zhang
- Key Laboratory of Microbial Pathogenesis and Interventions of Fujian Province University, the Key Laboratory of Innate Immune Biology of Fujian Province, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University, Fuzhou 350117, China
| | - Gong Zhang
- Key Laboratory of Microbial Pathogenesis and Interventions of Fujian Province University, the Key Laboratory of Innate Immune Biology of Fujian Province, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University, Fuzhou 350117, China
| | - Jie Wang
- Key Laboratory of Microbial Pathogenesis and Interventions of Fujian Province University, the Key Laboratory of Innate Immune Biology of Fujian Province, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University, Fuzhou 350117, China
| | - Yueyao Feng
- Key Laboratory of Microbial Pathogenesis and Interventions of Fujian Province University, the Key Laboratory of Innate Immune Biology of Fujian Province, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University, Fuzhou 350117, China
| | - Zemin Zhang
- School of Pharmacy, Fujian Medical University, Fuzhou 350122, China
| | - Si Xie
- Key Laboratory of Microbial Pathogenesis and Interventions of Fujian Province University, the Key Laboratory of Innate Immune Biology of Fujian Province, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University, Fuzhou 350117, China
| | - Ziying Lin
- Key Laboratory of Microbial Pathogenesis and Interventions of Fujian Province University, the Key Laboratory of Innate Immune Biology of Fujian Province, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University, Fuzhou 350117, China
| | - Shiling Yang
- Key Laboratory of Microbial Pathogenesis and Interventions of Fujian Province University, the Key Laboratory of Innate Immune Biology of Fujian Province, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University, Fuzhou 350117, China
| | - Jin Lin
- School of Pharmacy, Fujian Medical University, Fuzhou 350122, China
| | - Hua Lin
- Key Laboratory of Microbial Pathogenesis and Interventions of Fujian Province University, the Key Laboratory of Innate Immune Biology of Fujian Province, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University, Fuzhou 350117, China
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2
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Landge VG, Mishra A, Thotamune W, Bonds AL, Alahakoon I, Karunarathne A, Young MC. Selective C-H Activation of Unprotected Allylamines by Control of Catalyst Speciation. CHEM CATALYSIS 2023; 3:100809. [PMID: 37982045 PMCID: PMC10653252 DOI: 10.1016/j.checat.2023.100809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
An outstanding challenge in the Pd-catalyzed functionalization of allylamines is the control of stereochemistry. Terminal alkenes preferentially undergo Heck-type reactions, while internal alkenes may undergo a mixture of Heck and C-H activation reactions that give mixtures of stereochemical products. In the case of unprotected allylamines, the challenge in achieving C-H activation is that facile in situ formation of Pd nanoparticles leads to preferential formation of trans rather than cis-substituted products. In this study we have demonstrated the feasibility of using mono-protected amino acid (MPAA) ligands as metal protecting groups to prevent aggregation and reduction, allowing the selective synthesis of free cis-arylated allylamines. This method complements Heck-selective methods, allowing complete stereochemical control over the synthesis of cinnamylamines, an important class of amine that can serve as therapeutics directly or as advanced intermediates. To highlight the utility of the methodology, we have demonstrated rapid access to mu opioid receptor ligands.
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Affiliation(s)
- Vinod G. Landge
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, Toledo, OH 43606, USA
| | - Ankita Mishra
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, Toledo, OH 43606, USA
| | - Waruna Thotamune
- Department of Chemistry, Saint Louis University, 3501 Laclede Avenue, St. Louis, MO 63103, USA
| | - Audrey L. Bonds
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, Toledo, OH 43606, USA
| | - Indunil Alahakoon
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, Toledo, OH 43606, USA
| | - Ajith Karunarathne
- Department of Chemistry, Saint Louis University, 3501 Laclede Avenue, St. Louis, MO 63103, USA
| | - Michael C. Young
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, Toledo, OH 43606, USA
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3
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Wu Y, Wu FW, Zhou K, Li Y, Chen L, Wang S, Xu ZY, Lou SJ, Xu DQ. Rapid access to 9-arylfluorene and spirobifluorene through Pd-catalysed C-H arylation/deaminative annulation. Chem Commun (Camb) 2022; 58:6280-6283. [PMID: 35507823 DOI: 10.1039/d2cc01355j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We describe here a facile synthesis of 9-arylfluorenes and spirobifluorenes from readily available 1,1-diarylmethylamines and iodoarenes through Pd-cataylsed C(sp2)-H arylation and a sequential deaminative annulation. The reaction features high efficiency and simplicity of operation, constituting an interesting shortcut to access fluorene compounds.
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Affiliation(s)
- Yu Wu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Feng-Wei Wu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Kun Zhou
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Yiming Li
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing, 314001, China.
| | - Lei Chen
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Shuang Wang
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Zhen-Yuan Xu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Shao-Jie Lou
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Dan-Qian Xu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
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4
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Landge VG, Bonds AL, Mncwango TA, Mather CB, Saleh Y, Fields HL, Lee F, Young MC. Amine-Directed Mizoroki-Heck Arylation of Free Allylamines. Org Chem Front 2022. [DOI: 10.1039/d2qo00041e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The transition metal-catalyzed Mizoroki−Heck reaction is a powerful method to synthesize C–C bonds, allowing access to several important pharmaceuticals. Traditionally free amines have not been compatible with these approaches due...
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5
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Young MC, Chand-Thakuri P, Alahakoon I, Liu D, Kapoor M, Kennedy JF, Jenkins KW, Rabon AM. Native Amine-Directed ortho-C–H Halogenation and Acetoxylation /Condensation of Benzylamines. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1625-9095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractFree or unfunctionalized benzylamines are well known to participate in C–H activation in the presence of palladium salts. Despite the ease with which these complexes can be activated, subsequent functionalization of the dimeric cyclometalates can be challenging. We demonstrate herein a free primary amine based C–H activation/functionalization protocol that allows for the ortho-C–H chlorination and bromination of unprotected benzylamines. We also demonstrate how use of fluorine-based oxidants gives rise to a unique acetoxylation/cyclization owing to the nucleophilicity of the free primary amine directing group.
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6
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Ville A, Annibaletto J, Coufourier S, Hoarau C, Tamion R, Journot G, Schneider C, Brière JF. Amine-Directed Palladium-Catalyzed C-H Halogenation of Phenylalanine Derivatives. Chemistry 2021; 27:13961-13965. [PMID: 34403169 DOI: 10.1002/chem.202102411] [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: 07/04/2021] [Indexed: 12/20/2022]
Abstract
An efficient primary-amine-directed, palladium-catalyzed C-H halogenation (X=I, Br, Cl) of phenylalanine derivatives is reported on a range of quaternary amino acid (AA) derivatives thanks to suitable conditions employing trifluoroacetic acid as additive. The extension of this original native functionality-directed ortho-selective halogenation was even demonstrated with the more challenging native phenylalanine as tertiary AA.
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Affiliation(s)
- Alexia Ville
- Normandie Université, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000, Rouen, France
| | - Julien Annibaletto
- Normandie Université, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000, Rouen, France
| | - Sébastien Coufourier
- Normandie Université, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000, Rouen, France.,Industrial Research Centre-Oril Industrie, CS 60125, 76210, Bolbec, France
| | - Christophe Hoarau
- Normandie Université, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000, Rouen, France
| | - Rodolphe Tamion
- Industrial Research Centre-Oril Industrie, CS 60125, 76210, Bolbec, France
| | - Guillaume Journot
- Industrial Research Centre-Oril Industrie, CS 60125, 76210, Bolbec, France
| | - Cédric Schneider
- Normandie Université, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000, Rouen, France
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7
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Ghosh P, Chowdhury D, Dana S, Baidya M. Transition Metal Catalyzed Free-Amine (-NH 2 ) Directed C-H Bond Activation and Functionalization for Biaryl Frameworks. CHEM REC 2021; 21:3795-3817. [PMID: 34235831 DOI: 10.1002/tcr.202100158] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 06/19/2021] [Accepted: 06/21/2021] [Indexed: 12/29/2022]
Abstract
Transition-metal-catalyzed direct transformation of inert C-H bond has revolutionized the arsenal of main-stream organic synthesis, providing a new upfront to forge structurally enriched and biologically relevant scaffolds in a step- and atom-economical way. Past decades have accounted for the major developments in this realm, proclaiming excellent site-selectivity by exploiting a variety of coordinating directing groups (DGs). Consideration of versatile, abundant, sp3 -hybridized free-amine (-NH2 ) functionality for the same purpose has always been a formidable task owing to its innate reactivity. In recent years, free-amine functionality has emerged as a potent DG for a wide range of C-C and C-heteroatom bonds formations and annulation cascades. In this review article, we have discussed the advancements of free-amine directed C-H activation/functionalization reactions towards biaryl frameworks made within a decade (2012 to 2021).
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Affiliation(s)
- Prasanjit Ghosh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Deepan Chowdhury
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Suman Dana
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Mahiuddin Baidya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
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8
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Landge VG, Grant AJ, Fu Y, Rabon AM, Payton JL, Young MC. Palladium-Catalyzed γ,γ'-Diarylation of Free Alkenyl Amines. J Am Chem Soc 2021; 143:10352-10360. [PMID: 34161068 DOI: 10.1021/jacs.1c04261] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The direct difunctionalization of alkenes is an effective way to construct multiple C-C bonds in one-pot using a single functional group. The regioselective dicarbofunctionalization of alkenes is therefore an important area of research to rapidly obtain complex organic molecules. Herein, we report a palladium-catalyzed γ,γ'-diarylation of free alkenyl amines through interrupted chain walking for the synthesis of Z-selective alkenyl amines. Notably, while 1,3-dicarbofunctionalization of allyl groups is well precedented, the present disclosure allows 1,3-dicarbofunctionalization of highly substituted allylamines to give highly Z-selective trisubsubstituted olefin products. This cascade reaction operates via an unprotected amine-directed Mizoroki-Heck (MH) pathway featuring a β-hydride elimination to selectively chain walk to furnish a new terminal olefin which then generates the cis-selective alkenyl amines around the sterically crowded allyl moiety. This operationally simple protocol is applicable to a variety of cyclic, branched, and linear secondary and tertiary alkenylamines, and has a broad substrate scope with regard to the arene coupling partner as well. Mechanistic studies have been performed to help elucidate the mechanism, including the presence of a likely unproductive side C-H activation pathway.
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Affiliation(s)
- Vinod G Landge
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, 2801 W. Bancroft St., Mailstop 602, Toledo, Ohio 43606, United States of America
| | - Aaron J Grant
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, 2801 W. Bancroft St., Mailstop 602, Toledo, Ohio 43606, United States of America
| | - Yu Fu
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, 2801 W. Bancroft St., Mailstop 602, Toledo, Ohio 43606, United States of America
| | - Allison M Rabon
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, 2801 W. Bancroft St., Mailstop 602, Toledo, Ohio 43606, United States of America
| | - John L Payton
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, 2801 W. Bancroft St., Mailstop 602, Toledo, Ohio 43606, United States of America.,Department of Chemistry, Kenyon College, 106 College Park Dr., Gambier, Ohio 43022, United States of America
| | - Michael C Young
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, 2801 W. Bancroft St., Mailstop 602, Toledo, Ohio 43606, United States of America
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9
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Zheng J, Gong GG, Zheng SJ, Zhang Y, Feng YQ. High Coverage Profiling of Carboxylated Metabolites in HepG2 Cells Using Secondary Amine-Assisted Ultrahigh-Performance Liquid Chromatography Coupled to High-Resolution Mass Spectrometry. Anal Chem 2021; 93:1604-1611. [PMID: 33356171 DOI: 10.1021/acs.analchem.0c04048] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Carboxylic metabolites are an important class of metabolites, which widely exist in mammals with various types. Chemical isotope labeling liquid chromatography-mass spectrometry (CIL-LC-MS) has been widely used for the detection of carboxylated metabolites. However, high coverage analysis of carboxylated metabolites in biological samples is still challenging due to improper reactivity and selectivity of labeling reagents to carboxylated metabolites. In this study, we used N-methylphenylethylamine (MPEA) to label various types of carboxylated metabolites including short-chain fatty acids (SCFAs), medium-chain fatty acids (MCFAs), long-chain fatty acids (LCFAs), polycarboxylic acids (polyCAs), amino acids (AAs), and aromatic acids. Additionally, metabolites containing other functional groups, such as phenol, sulfhydryl, and phosphate groups, could not be labeled under the conditions of MPEA labeling. After MPEA labeling, the detection sensitivity of carboxylic acids was increased by 1-2 orders of magnitude, and their chromatographic retention on a reversed-phase (RP) column was enhanced (RT > 3 min). Under optimized labeling conditions, we used MPEA and d3-N-methylphenylethylamine (d3-MPEA) for high coverage screening of carboxylated metabolites in HepG2 cells by ultrahigh-performance liquid chromatography coupled to high-resolution mass spectrometry (UHPLC-HRMS). As a result, a total of 403 potential carboxylated metabolites were obtained of which 68 were confirmed based on our established in-house chemically labeled metabolite database (CLMD). SCFAs, MCFAs, LCFAs, polyCAs, AAs, and aromatic acids were all detected in HepG2 cell extracts. Due to the successful identification of AAs, the current method increased the coverage of carboxylated metabolites compared with our previous work. Moreover, 133 and 109 carboxylated metabolites with changed contents were obtained in HepG2 cells incubated with curcumin and R-3-hydroxybutyric acid, respectively. In general, our established method realized high coverage analysis of carboxylated metabolites in HepG2 cells.
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Affiliation(s)
- Jie Zheng
- Department of Chemistry, Wuhan University, Wuhan 430072, P.R. China
| | - Ge-Ge Gong
- Department of Chemistry, Wuhan University, Wuhan 430072, P.R. China
| | - Shu-Jian Zheng
- Department of Chemistry, Wuhan University, Wuhan 430072, P.R. China
| | - Yu Zhang
- Department of Chemistry, Wuhan University, Wuhan 430072, P.R. China
| | - Yu-Qi Feng
- Department of Chemistry, Wuhan University, Wuhan 430072, P.R. China.,Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan 430072, P.R. China
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10
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Landge V, Maxwell JM, Chand-Thakuri P, Kapoor M, Diemler ET, Young MC. Palladium-Catalyzed Regioselective Arylation of Unprotected Allylamines. JACS AU 2021; 1:13-22. [PMID: 34467268 PMCID: PMC8395680 DOI: 10.1021/jacsau.0c00003] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Indexed: 05/03/2023]
Abstract
Palladium-catalyzed organometallic transformations of free amines are often unsuccessful due to side reactions, such as oxidation, that can occur. However, the ability to furnish the free amine products from these reactions is important for improving the utility and sustainability of these processes, especially for accessing their potential as medicinal and agrochemical agents. Notably, the 3,3-diarylallylamine motif is prevalent in a variety of biologically relevant structures, yet there are few catalytic approaches to their synthesis, and none involving the free amine. Herein, we describe a simple protocol for the arylation of cinnamylamines and the diarylation of terminal allylamines to generate a diverse group of 3,3-diarylallylamine products using a PdII precatalyst. Key features of the method are the ability to access relatively mild conditions that facilitate a broad substrate scope as well as direct diarylation of terminal allylamine substrates. In addition, several complex and therapeutically relevant molecules are included to demonstrate the utility of the transformation.
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Affiliation(s)
- Vinod
G. Landge
- Department
of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, United States
| | - Justin M. Maxwell
- Department
of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, United States
| | - Pratibha Chand-Thakuri
- Department
of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, United States
| | - Mohit Kapoor
- Department
of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, United States
| | - Evan T. Diemler
- Department
of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, United States
| | - Michael C. Young
- Department
of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, United States
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11
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Kapoor M, Singh A, Sharma K, Hua Hsu M. Site‐Selective C(
sp
3
)−H and C(
sp
2
)−H Functionalization of Amines Using a Directing‐Group‐Guided Strategy. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000689] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Mohit Kapoor
- Chitkara University Institute of Engineering and Technology Chitkara University Punjab India 140401
| | - Adhish Singh
- Chitkara University Institute of Engineering and Technology Chitkara University Punjab India 140401
| | - Kirti Sharma
- Chitkara University Institute of Engineering and Technology Chitkara University Punjab India 140401
| | - Ming Hua Hsu
- Department of Chemistry National Changhua University of Education Taiwan 500, R.O.C Changhua
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12
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Higham JI, Bull JA. Transient imine directing groups for the C–H functionalisation of aldehydes, ketones and amines: an update 2018–2020. Org Biomol Chem 2020; 18:7291-7315. [DOI: 10.1039/d0ob01587c] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review describes recent advances in C–H functionalisation using transient directing groups. Advances in directing group design, new bond forming methodologies, regio- and stereoselective processes, and new mechanistic insights are discussed.
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Affiliation(s)
- Joe I. Higham
- Department of Chemistry
- Imperial College London
- London SW7 2AZ
- UK
| | - James A. Bull
- Department of Chemistry
- Imperial College London
- London SW7 2AZ
- UK
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