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51
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Mostafa MAB, Calder EDD, Racys DT, Sutherland A. Intermolecular Aryl C-H Amination through Sequential Iron and Copper Catalysis. Chemistry 2017; 23:1044-1047. [PMID: 27918637 PMCID: PMC5396366 DOI: 10.1002/chem.201605671] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Indexed: 01/10/2023]
Abstract
A mild, efficient and regioselective method for para-amination of activated arenes has been developed through a combination of iron and copper catalysis. A diverse range of products were obtained from an operationally simple one-pot, two-step procedure involving bromination of the aryl substrate with the powerful Lewis acid iron(III) triflimide, followed by a copper(I)-catalysed N-arylation reaction. This two-step dehydrogenative process for the regioselective coupling of aromatic C-H bonds with non-activated amines was applicable to anisole-, phenol-, aniline- and acetanilide-type aryl compounds. Importantly, the arene substrates were used as the limiting reagent and required no protecting-group manipulations during the transformation.
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Affiliation(s)
- Mohamed A. B. Mostafa
- WestCHEM, School of Chemistry, The Joseph Black BuildingUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Ewen D. D. Calder
- WestCHEM, School of Chemistry, The Joseph Black BuildingUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Daugirdas T. Racys
- WestCHEM, School of Chemistry, The Joseph Black BuildingUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Andrew Sutherland
- WestCHEM, School of Chemistry, The Joseph Black BuildingUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
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52
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Das R, Kapur M. Palladium-Catalyzed, ortho-Selective C-H Halogenation of Benzyl Nitriles, Aryl Weinreb Amides, and Anilides. J Org Chem 2017; 82:1114-1126. [PMID: 28029050 DOI: 10.1021/acs.joc.6b02731] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A palladium-catalyzed, ortho-selective C-H halogenation methodology is reported herein. The highlight of the work is the highly selective C(sp2)-H functionalization of benzyl nitriles in the presence of activated C(sp3)-H bond, which results in good yields of the halogenated products with excellent regioselectivity. Along with benzyl nitriles, aryl Weinreb amides and anilides have been evaluated for the transformation using aprotic conditions. Mechanistic studies yield interesting aspects with respect to the pathway of the reaction and the directing group abilities.
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Affiliation(s)
- Riki Das
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) , Bhopal, Madhya Pradesh 462 066, India
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) , Bhopal, Madhya Pradesh 462 066, India
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53
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Sloan N, Luthra SK, McRobbie G, Pimlott SL, Sutherland A. Late stage iodination of biologically active agents using a one-pot process from aryl amines. RSC Adv 2017. [DOI: 10.1039/c7ra11860k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A tandem process has been developed for the general preparation of aryl iodide compounds from anilines that is also applicable for the late-stage iodination of biologically active agents.
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Affiliation(s)
- Nikki L. Sloan
- WestCHEM
- School of Chemistry
- The Joseph Black Building
- University of Glasgow
- Glasgow G12 8QQ
| | | | | | - Sally L. Pimlott
- West of Scotland PET Centre
- Greater Glasgow and Clyde NHS Trust
- Glasgow G12 0YN
- UK
| | - Andrew Sutherland
- WestCHEM
- School of Chemistry
- The Joseph Black Building
- University of Glasgow
- Glasgow G12 8QQ
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54
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Hwang JY, Baek JH, Shin TI, Shin JH, Oh JW, Kim KP, You Y, Kang EJ. Single-Electron-Transfer Strategy for Reductive Radical Cyclization: Fe(CO)5 and Phenanthroline System. Org Lett 2016; 18:4900-4903. [DOI: 10.1021/acs.orglett.6b02375] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Joon Young Hwang
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Jong Hwa Baek
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Tae Il Shin
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Jung Ha Shin
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Jae Won Oh
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Kwang Pyo Kim
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Youngmin You
- Division
of Chemical Engineering and Materials Science, Ewha Womans University, Seoul 03760, Korea
| | - Eun Joo Kang
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
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55
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Qian P, Du B, Song R, Wu X, Mei H, Han J, Pan Y. N-Iodosuccinimide-Initiated Spirocyclopropanation of Styrenes with 1,3-Dicarbonyl Compound for the Synthesis of Spirocyclopropanes. J Org Chem 2016; 81:6546-53. [DOI: 10.1021/acs.joc.6b01163] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ping Qian
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Coordination
Chemistry, Nanjing University, Nanjing 210093, China
| | - Bingnan Du
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Coordination
Chemistry, Nanjing University, Nanjing 210093, China
| | - Ruichun Song
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Coordination
Chemistry, Nanjing University, Nanjing 210093, China
| | - Xiaodong Wu
- MaAnShan High-Tech Research Institute of Nanjing University, MaAnShan 238200, China
| | - Haibo Mei
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Coordination
Chemistry, Nanjing University, Nanjing 210093, China
| | - Jianlin Han
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Coordination
Chemistry, Nanjing University, Nanjing 210093, China
| | - Yi Pan
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Coordination
Chemistry, Nanjing University, Nanjing 210093, China
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56
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Ni S, Sha W, Zhang L, Xie C, Mei H, Han J, Pan Y. N-Iodosuccinimide-Promoted Cascade Trifunctionalization of Alkynoates: Access to 1,1-Diiodoalkenes. Org Lett 2016; 18:712-5. [DOI: 10.1021/acs.orglett.5b03685] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Shengyang Ni
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Coordination
Chemistry, Nanjing University, Nanjing 210093, China
| | - Wanxing Sha
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Coordination
Chemistry, Nanjing University, Nanjing 210093, China
| | - Lijun Zhang
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Coordination
Chemistry, Nanjing University, Nanjing 210093, China
| | - Chen Xie
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Coordination
Chemistry, Nanjing University, Nanjing 210093, China
| | - Haibo Mei
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Coordination
Chemistry, Nanjing University, Nanjing 210093, China
- MaAnShan High-Tech Research Institute of Nanjing University, MaAnShan 238200, China
| | - Jianlin Han
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Coordination
Chemistry, Nanjing University, Nanjing 210093, China
- MaAnShan High-Tech Research Institute of Nanjing University, MaAnShan 238200, China
| | - Yi Pan
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Coordination
Chemistry, Nanjing University, Nanjing 210093, China
- MaAnShan High-Tech Research Institute of Nanjing University, MaAnShan 238200, China
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57
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Racys DT, Sharif SAI, Pimlott SL, Sutherland A. Silver(I)-Catalyzed Iodination of Arenes: Tuning the Lewis Acidity of N-Iodosuccinimide Activation. J Org Chem 2016; 81:772-80. [PMID: 26795534 DOI: 10.1021/acs.joc.5b02761] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A mild and rapid method for the iodination of arenes that utilizes silver(I) triflimide as a catalyst for activation of N-iodosuccinimide has been developed. The transformation was found to be general for a wide range of anisole, aniline, acetanilide, and phenol derivatives and allowed the late-stage iodination of biologically active compounds such as PIMBA, a SPECT imaging agent of breast cancer, and (-)-IBZM, a dopamine D2 receptor antagonist. The method was also modified for the radioiodination of arenes using a one-pot procedure involving the in situ generation of [(125)I]-N-iodosuccinimide followed by the silver(I)-catalyzed iodination.
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Affiliation(s)
- Daugirdas T Racys
- WestCHEM, School of Chemistry, The Joseph Black Building, University of Glasgow , Glasgow G12 8QQ, United Kingdom
| | - Salaheddin A I Sharif
- WestCHEM, School of Chemistry, The Joseph Black Building, University of Glasgow , Glasgow G12 8QQ, United Kingdom
| | - Sally L Pimlott
- West of Scotland PET Centre, Greater Glasgow and Clyde NHS Trust, Glasgow G12 0YN, United Kingdom
| | - Andrew Sutherland
- WestCHEM, School of Chemistry, The Joseph Black Building, University of Glasgow , Glasgow G12 8QQ, United Kingdom
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