1
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Upadhyaya K, Dubbu S. Advancing carbohydrate functionality: The role of hypervalent iodine. Carbohydr Res 2024; 542:109175. [PMID: 38865797 DOI: 10.1016/j.carres.2024.109175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 05/29/2024] [Accepted: 06/03/2024] [Indexed: 06/14/2024]
Abstract
Hypervalent iodine reagents have undergone significant development and widespread application in the functionalization of carbohydrates. This is primarily attributed to their exceptional properties, including mildness, ease of handling, high selectivity, environmental friendliness, and stability. This review aims to emphasize the utilization of hypervalent iodine compounds in the functionalization of carbohydrates. The present article covers various aspects, including glycal functionalization, C-H or N-H insertion reactions, O-arylations, C-2 deoxy-2-iodo glycoconjugates, iminosugars, and C3-oxo-glycals, achieved through the use of hypervalent iodine reagents/catalysts. Additionally, it explores hypervalent iodine-mediated bioactive 1,3,5-trioxocane synthesis followed by rare sugars synthesis.
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Affiliation(s)
- Kapil Upadhyaya
- Department of Chemical Physiology and Biochemistry, Oregon Health and Science University, Portland, OR 97239, USA.
| | - Sateesh Dubbu
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL, 61801, USA.
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2
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Montes AS, León EI, Martin A, Pérez-Martín I, Suárez E. Free‐Radical Epimerization of D‐ into L‐C‐(glycosyl)methanol Compounds Using 1,5‐Hydrogen Atom Transfer Reaction. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Adrián S. Montes
- IPNA: Instituto de Productos Naturales y Agrobiologia Síntesis de Productos Naturales Avda. Astrofisico Francisco Sanchez 3 38206 La Laguna SPAIN
| | - Elisa I León
- IPNA: Instituto de Productos Naturales y Agrobiologia Síntesis de Productos Naturales Avda. Astrofisico Francisco Sanchez 3 38206 La Laguna SPAIN
| | - Angeles Martin
- Instituto de Productos Naturales Y Agrobiolog�a, CSIC Sintesis de Productos Naturales Avda. Astrofisico Fco. Sanchez 3 38205 La Laguna SPAIN
| | - Inés Pérez-Martín
- IPNA: Instituto de Productos Naturales y Agrobiologia Síntesis de Productos Naturales Avda. Astrofisico Francisco Sanchez 3 38206 La Laguna SPAIN
| | - Ernesto Suárez
- IPNA: Instituto de Productos Naturales y Agrobiologia Síntesis de Productos Naturales Avda. Astrofisico Francisco Sanchez 3 38206 La Laguna SPAIN
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3
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Munda M, Nandi R, Gavit VR, Kundu S, Niyogi S, Bisai A. Total syntheses of naturally occurring antiviral indolosesquiterpene alkaloids, xiamycins C–F via Csp 3–H functionalization. Chem Sci 2022; 13:11666-11671. [PMID: 36320384 PMCID: PMC9555729 DOI: 10.1039/d2sc03479d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/21/2022] [Indexed: 11/21/2022] Open
Abstract
Concise total syntheses of naturally occurring antiviral indolosesquiterpene alkaloids, xiamycin C (2a), D (2b), E (2c) and F (2d), have been achieved via a late-stage oxidative δ-Csp3–H functionalization of an advanced pentacyclic enone intermediate 8. This strategy takes advantage of ipso-nitration of naturally occurring abietane diterpenoids to synthesize o-bromo nitroarene derivative 11. A Suzuki–Miyaura coupling of 11 with phenylboronic acid followed by Cadogan's ring closure provided a modular approach to a carbazole ring required for a functionalized pentacyclic core of indolosesquiterpene alkaloids. Enantioenriched enone 8 was synthesized via three key transformations: ipso-nitration of abietane diterpenoids to furnish o-bromo nitroarene 11, Suzuki coupling with phenylboronic acid, and Cadogan's reductive ring closure to craft a carbazole ring.![]()
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Affiliation(s)
- Mintu Munda
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462 066, Madhya Pradesh, India
| | - Rhituparna Nandi
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462 066, Madhya Pradesh, India
| | - Vipin R. Gavit
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462 066, Madhya Pradesh, India
| | - Sourav Kundu
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462 066, Madhya Pradesh, India
| | - Sovan Niyogi
- Department of Chemistry, Indian Institute of Science Education and Research Kolkata, Mohanpur Campus, Nadia, Kalyani, 741 246, West Bengal, India
| | - Alakesh Bisai
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462 066, Madhya Pradesh, India
- Department of Chemistry, Indian Institute of Science Education and Research Kolkata, Mohanpur Campus, Nadia, Kalyani, 741 246, West Bengal, India
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4
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Santana AG, Herrera AJ, González CC. Intramolecular Metal-Free C(sp 3)-H Activation Enables a Selective Mono O-Debenzylation of Fully Protected Aminosugars. J Org Chem 2021; 86:16736-16752. [PMID: 34807601 DOI: 10.1021/acs.joc.1c01977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Carbamate-bearing benzylated aminosugars undergo an I2/I(III)-promoted intramolecular hydrogen atom transfer (IHAT) followed by a nucleophilic attack to provide polycyclic structures. Thus, suitably positioned benzyl ethers are surgically oxidized into the corresponding mixed N/O-benzylidene acetals, which can be conveniently deprotected under mild acidic conditions to grant access to selectively O-deprotected aminosugars amenable for further derivatization. The scope of this strategy has been proven with a series of furanosic and pyranosic scaffolds. Preliminary mechanistic studies, including Hammett LFER and KIE analyses, support a reaction pathway with nucleophilic cyclization as the rate-determining step.
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Affiliation(s)
- Andrés G Santana
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Antonio J Herrera
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Concepción C González
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
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5
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Shinde AH, Thomas AA, Mague JT, Sathyamoorthi S. Highly Regio- and Diastereoselective Tethered Aza-Wacker Cyclizations of Alkenyl Phosphoramidates. J Org Chem 2021; 86:14732-14758. [PMID: 34665630 PMCID: PMC10119688 DOI: 10.1021/acs.joc.1c01483] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We present highly diastereoselective tethered aza-Wacker cyclization reactions of alkenyl phosphoramidates. "Arming" the phosphoramidate tether with 5-chloro-8-quinolinol was essential to achieving >20:1 diastereoselectivity in these reactions. The substrate scope with respect to alkenyl alcohols and phosphoramidate tether was extensively explored. The scalability of the oxidative cyclization was demonstrated, and the product cyclophosphoramidates were shown to be valuable synthons, including for tether removal. With chiral alkenyl precursors, enantiopure cyclic phosphoramidates were formed.
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Affiliation(s)
- Anand H. Shinde
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas, USA (66047)
| | - Annu Anna Thomas
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas, USA (66047)
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, Louisiana, USA. (70118)
| | - Shyam Sathyamoorthi
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas, USA (66047)
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6
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Sinha SK, Guin S, Maiti S, Biswas JP, Porey S, Maiti D. Toolbox for Distal C-H Bond Functionalizations in Organic Molecules. Chem Rev 2021; 122:5682-5841. [PMID: 34662117 DOI: 10.1021/acs.chemrev.1c00220] [Citation(s) in RCA: 186] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Transition metal catalyzed C-H activation has developed a contemporary approach to the omnipresent area of retrosynthetic disconnection. Scientific researchers have been tempted to take the help of this methodology to plan their synthetic discourses. This paradigm shift has helped in the development of industrial units as well, making the synthesis of natural products and pharmaceutical drugs step-economical. In the vast zone of C-H bond activation, the functionalization of proximal C-H bonds has gained utmost popularity. Unlike the activation of proximal C-H bonds, the distal C-H functionalization is more strenuous and requires distinctly specialized techniques. In this review, we have compiled various methods adopted to functionalize distal C-H bonds, mechanistic insights within each of these procedures, and the scope of the methodology. With this review, we give a complete overview of the expeditious progress the distal C-H activation has made in the field of synthetic organic chemistry while also highlighting its pitfalls, thus leaving the field open for further synthetic modifications.
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Affiliation(s)
- Soumya Kumar Sinha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Srimanta Guin
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sudip Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Jyoti Prasad Biswas
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sandip Porey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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7
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Ghosh SK, Hu M, Comito R. One-Pot Synthesis of Primary and Secondary Aliphatic Amines via Mild and Selective sp3 C-H Imination. Chemistry 2021; 27:17601-17608. [PMID: 34387903 DOI: 10.1002/chem.202102627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Indexed: 11/09/2022]
Abstract
The direct replacement of sp3 C-H bonds with simple amine units (-NH2) remains synthetically challenging, although primary aliphatic amines are ubiquitous in medicinal chemistry and natural product synthesis. We report a mild and selective protocol for preparing primary and secondary aliphatic amines in a single pot, based on intermolecular sp3 C-H imination. The first C-H imination of diverse alkanes, this method shows useful site-selectivity within substrates bearing multiple sp3 C-H bonds. Furthermore, this reaction tolerates polar functional groups relevant for complex molecule synthesis, highlighted in the synthesis of amine pharmaceuticals and amination of natural products. We characterize a unique C-H imination mechanism based on radical rebound to an iminyl radical, supported by kinetic isotope effects, stereoablation, resubmission, and computational modeling. This work constitutes a selective method for complex amine synthesis and a new mechanistic platform for C-H amination.
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Affiliation(s)
- Subrata K Ghosh
- University of Houston, Chemistry, Department of Chemistry, 3585 Cullen Boulevard, Room 112, 77204-5003, Houston, UNITED STATES
| | - Mengnan Hu
- University of Houston, Chemistry, Department of Chemistry, 3585 Cullen Boulevard, Room 112, 77204-5003, Houstonn, UNITED STATES
| | - Robert Comito
- University of Houston, Chemistry, Department of Chemistry, 3585 Cullen Boulevard, Room 112, 77204-5003, Houston, UNITED STATES
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8
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Liu J, Wei Y, Shi M. Direct Activation of a Remote C(sp 3 )-H Bond Enabled by a Visible-Light Photosensitized Allene Moiety. Angew Chem Int Ed Engl 2021; 60:12053-12059. [PMID: 33719146 DOI: 10.1002/anie.202101266] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/02/2021] [Indexed: 12/14/2022]
Abstract
Despite allene derivatives have been always regarded as a radical accepter in traditional radical chemistry for decades, the reactivity of allene derivatives under excited state in radical chemistry was rarely explored. Herein, we wish to report an example to engage triplet-excited state of allene moiety as hydrogen-atom-transfer (HAT) partner in the activation of remote sp3 C-H bond via visible-light irradiation under mild reaction conditions with broad substrate scope and good functional-group tolerance. The reaction mechanism involving the generation of triplet excited state of allene derivative and the subsequent HAT process was supported by deuterium labeling, kinetic analysis experiments and DFT calculations.
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Affiliation(s)
- Jiaxin Liu
- State Key Laboratory of Organometallic Chemistry, University of Chinese Academy of Sciences, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, University of Chinese Academy of Sciences, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry, University of Chinese Academy of Sciences, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
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9
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Liu J, Wei Y, Shi M. Direct Activation of a Remote C(sp
3
)–H Bond Enabled by a Visible‐Light Photosensitized Allene Moiety. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101266] [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)
- Jiaxin Liu
- State Key Laboratory of Organometallic Chemistry University of Chinese Academy of Sciences Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry University of Chinese Academy of Sciences Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry University of Chinese Academy of Sciences Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
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10
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Griggs SD, Martin-Roncero A, Nelson A, Marsden SP. Regioselective side-chain amination of 2-alkyl azacycles by radical translocation: total synthesis of tetraponerine T8. Chem Commun (Camb) 2021; 57:919-922. [PMID: 33393538 DOI: 10.1039/d0cc07625b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The regioselective γ-C-H amination of the side-chain of saturated 2-alkyl nitrogen heterocycles is reported, proceeding through a sulfamide-directed 1,6-radical translocation. The practicality of this rapid access to 1,3-diamines is highlighted in a short synthesis of the alkaloid tetraponerine T8 and non-natural analogues.
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Affiliation(s)
- Samuel D Griggs
- Department of Chemistry, University of Leeds, Leeds, LS2 9JT, UK.
| | | | - Adam Nelson
- Department of Chemistry, University of Leeds, Leeds, LS2 9JT, UK.
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11
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Visible-light induced generation of bifunctional nitrogen-centered radicals: a concise synthetic strategy to construct bicyclo[3.2.1] octane and azepane cores. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9852-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Farshadfar K, Gouranourimi A, Ariafard A. How the combination of PhIO and I 2 provides a species responsible for conducting organic reactions through radical mechanisms. Org Biomol Chem 2020; 18:8103-8108. [PMID: 33006357 DOI: 10.1039/d0ob01705a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A combination of iodosobenzene (PhIO) and molecular iodine (I2) is well-documented to produce a key species capable of conducting various organic reactions through radical mechanisms. This key species is identified here by density functional theory (DFT) calculations to be the hypoiodite radical (IO˙). The calculations show that two equivalents of IO˙ are generated when I2 reacts with two equivalents of PhIO. One of the ensuing IO˙ species acts as a hydrogen abstractor and thus forms an organic radical and the other one is involved in oxidation of the resultant organic radical to afford the final product.
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Affiliation(s)
- Kaveh Farshadfar
- Department of Chemistry, Islamic Azad University, Central Tehran Branch, Poonak, Tehran 1469669191, Iran
| | - Ali Gouranourimi
- School of Natural Sciences (Chemistry), University of Tasmania, Private Bag 75, Hobart TAS 7001, Australia.
| | - Alireza Ariafard
- School of Natural Sciences (Chemistry), University of Tasmania, Private Bag 75, Hobart TAS 7001, Australia.
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13
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14
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Lai YH, Wu RS, Huang J, Huang JY, Xu DZ. Iron-Catalyzed Oxidative Coupling of Indoline-2-ones with Aminobenzamides via Dual C-H Functionalization. Org Lett 2020; 22:3825-3829. [PMID: 32378901 DOI: 10.1021/acs.orglett.0c01066] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We describe an unprecedented dual C-H functionalization of indolin-2-one via an oxidative C(sp3)-H/N-H/X-H (X = N, C, S) cross-coupling protocol, which is catalyzed by a simple iron salt under mild and ligand-free conditions and employs air (molecular oxygen) as the terminal oxidant. This method is readily applicable for the construction of tetrasubstituted carbon centers from methylenes and provides a wide variety of spiro N-heterocyclic oxindoles.
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Affiliation(s)
- Yi-Huan Lai
- National Engineering Research Center of Pesticide (Tianjin), State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Run-Shi Wu
- National Engineering Research Center of Pesticide (Tianjin), State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Jie Huang
- National Engineering Research Center of Pesticide (Tianjin), State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Jun-Yu Huang
- National Engineering Research Center of Pesticide (Tianjin), State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Da-Zhen Xu
- National Engineering Research Center of Pesticide (Tianjin), State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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15
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Kumar G, Pradhan S, Chatterjee I. N‐Centered Radical Directed Remote C−H Bond Functionalization via Hydrogen Atom Transfer. Chem Asian J 2020; 15:651-672. [DOI: 10.1002/asia.201901744] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 01/16/2020] [Indexed: 12/31/2022]
Affiliation(s)
- Gautam Kumar
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road, Rupnagar Punjab 140001 India
| | - Suman Pradhan
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road, Rupnagar Punjab 140001 India
| | - Indranil Chatterjee
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road, Rupnagar Punjab 140001 India
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16
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Short MA, Blackburn JM, Roizen JL. Modifying Positional Selectivity in C-H Functionalization Reactions with Nitrogen-Centered Radicals: Generalizable Approaches to 1,6-Hydrogen-Atom Transfer Processes. Synlett 2020; 31:102-116. [PMID: 33986583 PMCID: PMC8115226 DOI: 10.1055/s-0039-1691501] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Nitrogen-centered radicals are powerful reaction intermediates owing in part to their ability to guide position-selective C(sp3)-H functionalization reactions. Typically, these reactive species dictate the site of functionalization by preferentially engaging in 1,5-hydrogen-atom transfer (1,5-HAT) processes. Broadly relevant approaches to alter the site-selectivity of HAT pathways would be valuable because they could be paired with a variety of tactics to install diverse functional groups. Yet, until recently, there have been no generalizable strategies to modify the position-selectivity observed in these HAT processes. This Synpacts article reviews transformations in which nitrogen-centered radicals preferentially react through 1,6-HAT pathways. Specific attention will be focused on strategies that employ alcohol- and amine-anchored sulfamate esters and sulfamides as templates to achieve otherwise rare γ-selective functionalization reactions.
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Affiliation(s)
- Melanie A. Short
- Department of Chemistry, Duke University, Box 90346, Durham, North Carolina, 27708-0354, USA
| | - J. Miles Blackburn
- Department of Chemistry, Duke University, Box 90346, Durham, North Carolina, 27708-0354, USA
| | - Jennifer L. Roizen
- Department of Chemistry, Duke University, Box 90346, Durham, North Carolina, 27708-0354, USA
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17
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Qin Y, Han Y, Tang Y, Wei J, Yang M. A general method for site-selective Csp 3-S bond formation via cooperative catalysis. Chem Sci 2019; 11:1276-1282. [PMID: 34123252 PMCID: PMC8148391 DOI: 10.1039/c9sc04169a] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Herein, we report a copper-catalysed site-selective thiolation of Csp3-H bonds of aliphatic amines. The method features a broad substrate scope and good functional group compatibility. Primary, secondary, and tertiary C-H bonds can be converted into C-S bonds with a high efficiency. The late-stage modification of biologically active compounds by this method was also demonstrated. Furthermore, the one-pot preparation of pyrrolidine or piperidine compounds via a domino process was achieved.
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Affiliation(s)
- Yuman Qin
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE, School of Chemistry and Chemical Engineering, Shaanxi Normal University 620 West Chang'an Ave Xi'an 710119 China
| | - Yujie Han
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE, School of Chemistry and Chemical Engineering, Shaanxi Normal University 620 West Chang'an Ave Xi'an 710119 China
| | - Yongzhen Tang
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE, School of Chemistry and Chemical Engineering, Shaanxi Normal University 620 West Chang'an Ave Xi'an 710119 China
| | - Junfa Wei
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE, School of Chemistry and Chemical Engineering, Shaanxi Normal University 620 West Chang'an Ave Xi'an 710119 China
| | - Mingyu Yang
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE, School of Chemistry and Chemical Engineering, Shaanxi Normal University 620 West Chang'an Ave Xi'an 710119 China
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18
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Nakafuku KM, Twumasi RK, Vanitcha A, Wappes EA, Namitharan K, Bekkaye M, Nagib DA. Development of an Imine Chaperone for Selective C-H Functionalization of Alcohols via Radical Relay. J Org Chem 2019; 84:13065-13072. [PMID: 31513401 PMCID: PMC6948922 DOI: 10.1021/acs.joc.9b02052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The design of a radical relay chaperone to promote selective C-H functionalizations is described. A saccharin-based imine was found to be uniquely suited to effect C-H amination of alcohols via an in situ generated hemiaminal. This radical chaperone facilitates the mild generation of an N-centered radical while also directing its regioselective H atom transfer (HAT) to the β carbon of an alcohol. Upon β C-H halogenation, aminocyclization, and reductive cleavage, an NH2 is formally added vicinal to an alcohol. The development, synthetic utility, and chemo-, regio-, and stereoselectivity of this imine chaperone-mediated C-H amination is presented herein.
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Affiliation(s)
- Kohki M Nakafuku
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
| | - Raymond K Twumasi
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
| | - Avassaya Vanitcha
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
| | - Ethan A Wappes
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
| | - Kayambu Namitharan
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
| | - Mathieu Bekkaye
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
| | - David A Nagib
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
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19
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Tardieu D, Desnoyers M, Laye C, Hazelard D, Kern N, Compain P. Stereoselective Synthesis of C,C-Glycosides from exo-Glycals Enabled by Iron-Mediated Hydrogen Atom Transfer. Org Lett 2019; 21:7262-7267. [DOI: 10.1021/acs.orglett.9b02496] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Damien Tardieu
- Laboratoire d’Innovation Moléculaire et Applications (LIMA), Université de Strasbourg/Université de Haute-Alsace/CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Marine Desnoyers
- Laboratoire d’Innovation Moléculaire et Applications (LIMA), Université de Strasbourg/Université de Haute-Alsace/CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Claire Laye
- Laboratoire d’Innovation Moléculaire et Applications (LIMA), Université de Strasbourg/Université de Haute-Alsace/CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Damien Hazelard
- Laboratoire d’Innovation Moléculaire et Applications (LIMA), Université de Strasbourg/Université de Haute-Alsace/CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Nicolas Kern
- Laboratoire d’Innovation Moléculaire et Applications (LIMA), Université de Strasbourg/Université de Haute-Alsace/CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Philippe Compain
- Laboratoire d’Innovation Moléculaire et Applications (LIMA), Université de Strasbourg/Université de Haute-Alsace/CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 rue Becquerel, 67087 Strasbourg, France
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20
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Dauncey EM, Dighe SU, Douglas JJ, Leonori D. A dual photoredox-nickel strategy for remote functionalization via iminyl radicals: radical ring-opening-arylation, -vinylation and -alkylation cascades. Chem Sci 2019; 10:7728-7733. [PMID: 32180920 PMCID: PMC7053659 DOI: 10.1039/c9sc02616a] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 06/26/2019] [Indexed: 12/22/2022] Open
Abstract
A divergent strategy for the remote arylation, vinylation and alkylation of nitriles is described. These processes proceed through the photoredox generation of a cyclic iminyl radical and its following ring-opening reaction. The distal nitrile radical is then engaged in nickel-based catalytic cycles to form C-C bonds with aryl bromides, alkynes and alkyl bromides.
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Affiliation(s)
- Elizabeth M Dauncey
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK .
| | - Shashikant U Dighe
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK .
| | - James J Douglas
- Early Chemical Development , Pharmaceutical Sciences , AstraZeneca, R&D , Macclesfield SK10 2NA , UK
| | - Daniele Leonori
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK .
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21
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Kanyiva KS, Tane M, Shibata T. Iodine-Catalyzed Synthesis of Chiral 4-Imidazolidinones Using α-Amino Acid Derivatives via Dehydrogenative N–H/C(sp3)–H Coupling. J Org Chem 2019; 84:12773-12783. [DOI: 10.1021/acs.joc.9b01154] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kyalo Stephen Kanyiva
- Global Center of Science and Engineering, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Marina Tane
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
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22
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Nikolaienko P, Jentsch M, Kale AP, Cai Y, Rueping M. Electrochemical and Scalable Dehydrogenative C(sp
3
)−H Amination via Remote Hydrogen Atom Transfer in Batch and Continuous Flow. Chemistry 2019; 25:7177-7184. [DOI: 10.1002/chem.201806092] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 03/09/2019] [Indexed: 01/11/2023]
Affiliation(s)
- Pavlo Nikolaienko
- KAUST Catalysis Center (KCC)King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Marc Jentsch
- Institute of Organic ChemistryRWTH-Aachen University Landoltweg 1 52074 Aachen Germany
| | - Ajit P. Kale
- KAUST Catalysis Center (KCC)King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Yunfei Cai
- KAUST Catalysis Center (KCC)King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Magnus Rueping
- KAUST Catalysis Center (KCC)King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
- Institute of Organic ChemistryRWTH-Aachen University Landoltweg 1 52074 Aachen Germany
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23
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Shaw M, Kumar A. Visible-Light-Mediated β-C(sp3)–H Amination of Glycosylimidates: En Route to Oxazoline-Fused/Spiro Nonclassical Bicyclic Sugars. Org Lett 2019; 21:3108-3113. [DOI: 10.1021/acs.orglett.9b00763] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mukta Shaw
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801106, Bihar, India
| | - Amit Kumar
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801106, Bihar, India
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24
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Wang F, Stahl SS. Merging Photochemistry with Electrochemistry: Functional-Group Tolerant Electrochemical Amination of C(sp 3 )-H Bonds. Angew Chem Int Ed Engl 2019; 58:6385-6390. [PMID: 30763466 DOI: 10.1002/anie.201813960] [Citation(s) in RCA: 146] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 02/13/2019] [Indexed: 12/22/2022]
Abstract
Direct amination of C(sp3 )-H bonds is of broad interest in the realm of C-H functionalization because of the prevalence of nitrogen heterocycles and amines in pharmaceuticals and natural products. Reported here is a combined electrochemical/photochemical method for dehydrogenative C(sp3 )-H/N-H coupling that exhibits good reactivity with both sp2 and sp3 N-H bonds. The results show how use of iodide as an electrochemical mediator, in combination with light-induced cleavage of intermediate N-I bonds, enables the electrochemical process to proceed at low electrode potentials. This approach significantly improves the functional-group compatibility of electrochemical C-H amination, for example, tolerating electron-rich aromatic groups that undergo deleterious side reactions in the presence of high electrode potentials.
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Affiliation(s)
- Fei Wang
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Shannon S Stahl
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
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25
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Wang F, Stahl SS. Merging Photochemistry with Electrochemistry: Functional‐Group Tolerant Electrochemical Amination of C(sp
3
)−H Bonds. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813960] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Fei Wang
- Department of Chemistry University of Wisconsin-Madison Madison WI 53706 USA
| | - Shannon S. Stahl
- Department of Chemistry University of Wisconsin-Madison Madison WI 53706 USA
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26
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Stateman LM, Wappes EA, Nakafuku KM, Edwards KM, Nagib DA. Catalytic β C-H amination via an imidate radical relay. Chem Sci 2019; 10:2693-2699. [PMID: 30996986 PMCID: PMC6419930 DOI: 10.1039/c8sc05685d] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 01/09/2019] [Indexed: 01/03/2023] Open
Abstract
An iodine-catalyzed strategy for β C–H amination of alcohols is enabled by a chemo-, regio-, and stereo-selective H-atom transfer mechanism.
The first catalytic strategy to harness imidate radicals for C–H functionalization has been developed. This iodine-catalyzed approach enables β C–H amination of alcohols by an imidate-mediated radical relay. In contrast to our first-generation, (super)stoichiometric protocol, this catalytic method enables faster and more efficient reactivity. Furthermore, lower oxidant concentration affords broader functional group tolerance, including alkenes, alkynes, alcohols, carbonyls, and heteroarenes. Mechanistic experiments interrogating the electronic nature of the key 1,5 H-atom transfer event are included, as well as probes for chemo-, regio-, and stereo-selectivity.
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Affiliation(s)
- Leah M Stateman
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - Ethan A Wappes
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - Kohki M Nakafuku
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - Kara M Edwards
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - David A Nagib
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
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27
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Reddy Kandimalla S, Prathima Parvathaneni S, Sabitha G, Subba Reddy BV. Recent Advances in Intramolecular Metal-Free Oxidative C-H Bond Aminations Using Hypervalent Iodine(III) Reagents. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801469] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Satheeshkumar Reddy Kandimalla
- Fluoro & Agrochemicals Division; CSIR-Indian Institute of Chemical Technology; 500-007 Hyderabad India
- Natural Products Chemistry Division; CSIR-Indian Institute of Chemical Technology; Hyderabad-500 007 India
- Academy of Scientific and Innovative Research; 110025 New Delhi India
| | - Sai Prathima Parvathaneni
- Fluoro & Agrochemicals Division; CSIR-Indian Institute of Chemical Technology; 500-007 Hyderabad India
- Department of Chemistry; University of Texas at Austin; 78712 Austin, Texas United States
| | - Gowravaram Sabitha
- Natural Products Chemistry Division; CSIR-Indian Institute of Chemical Technology; Hyderabad-500 007 India
- Academy of Scientific and Innovative Research; 110025 New Delhi India
| | - B. V. Subba Reddy
- Fluoro & Agrochemicals Division; CSIR-Indian Institute of Chemical Technology; 500-007 Hyderabad India
- Academy of Scientific and Innovative Research; 110025 New Delhi India
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28
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Zhang Z, Stateman LM, Nagib DA. δ C-H (hetero)arylation via Cu-catalyzed radical relay. Chem Sci 2018; 10:1207-1211. [PMID: 30774920 PMCID: PMC6349054 DOI: 10.1039/c8sc04366c] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 11/09/2018] [Indexed: 12/23/2022] Open
Abstract
A radical relay strategy has been developed to enable selective δ C–H arylation. The approach employs a chiral copper catalyst, which serves the dual roles of generating an N-centered radical to promote intramolecular H-atom transfer, and then intercepting a distal C-centered radical for C–C bond formation with (hetero)aryl boronic acids.
A Cu-catalyzed strategy has been developed that harnesses a radical relay mechanism to intercept a distal C-centered radical for C–C bond formation. This approach enables selective δ C–H (hetero)arylation of sulfonamides via intramolecular hydrogen atom transfer (HAT) by an N-centered radical. The radical relay is both initiated and terminated by a Cu catalyst, which enables incorporation of arenes and heteroarenes by cross-coupling with boronic acids. The broad scope and utility of this catalytic method for δ C–H arylation is shown, along with mechanistic probes for selectivity of the HAT mechanism. A catalytic, asymmetric variant is also presented, as well as a method for accessing 1,1-diaryl-pyrrolidines via iterative δ C–H functionalizations.
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Affiliation(s)
- Zuxiao Zhang
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - Leah M Stateman
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - David A Nagib
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
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29
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Na CG, Alexanian EJ. A General Approach to Site-Specific, Intramolecular C-H Functionalization Using Dithiocarbamates. Angew Chem Int Ed Engl 2018; 57:13106-13109. [PMID: 30085389 PMCID: PMC6249686 DOI: 10.1002/anie.201806963] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 07/17/2018] [Indexed: 01/11/2023]
Abstract
Intramolecular hydrogen atom transfer is an established approach for the site-specific functionalization of unactivated, aliphatic C-H bonds. Transformations using this strategy typically require unstable intermediates formed using strong oxidants and have mainly targeted C-H halogenations or intramolecular aminations. Herein, we report a site-specific C-H functionalization that significantly increases the synthetic scope and convergency of reactions proceeding via intramolecular hydrogen atom transfer. Stable, isolable N-dithiocarbamates are used as precursors to amidyl radicals formed via either light or radical initiation to efficiently deliver highly versatile alkyl dithiocarbamates across a wide range of complex structures.
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Affiliation(s)
- Christina G. Na
- Department of Chemistry The University of North Carolina at Chapel Hill Chapel Hill, NC 27599 (USA)
| | - Erik J. Alexanian
- Department of Chemistry The University of North Carolina at Chapel Hill Chapel Hill, NC 27599 (USA)
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30
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Morcillo SP, Dauncey EM, Kim JH, Douglas JJ, Sheikh NS, Leonori D. Photoinduced Remote Functionalization of Amides and Amines Using Electrophilic Nitrogen Radicals. Angew Chem Int Ed Engl 2018; 57:12945-12949. [PMID: 30074300 PMCID: PMC6221136 DOI: 10.1002/anie.201807941] [Citation(s) in RCA: 183] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Indexed: 01/29/2023]
Abstract
The selective functionalization of C(sp3 )-H bonds at distal positions to functional groups is a challenging task in synthetic chemistry. Reported here is a photoinduced radical cascade strategy for the divergent functionalization of amides and protected amines. The process is based on the oxidative generation of electrophilic amidyl radicals and their subsequent transposition by 1,5-H-atom transfer, resulting in remote fluorination, chlorination and, for the first time, thioetherification, cyanation, and alkynylation. The process is tolerant of most common functional groups and delivers useful building blocks that can be further elaborated. The utility of this strategy is demonstrated through the late-stage functionalization of amino acids and a dipeptide.
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Affiliation(s)
- Sara P. Morcillo
- School of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | | | - Ji Hye Kim
- School of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - James J. Douglas
- Early Chemical DevelopmentPharmaceutical SciencesIMED Biotech UnitAstraZenecaMacclesfieldSK10 2NAUK
| | - Nadeem S. Sheikh
- Department of ChemistryFaculty of ScienceKing Faisal UniversityP.O. Box 380Al-Ahsa31982Saudi Arabia
| | - Daniele Leonori
- School of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
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31
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Hu X, Zhang G, Bu F, Nie L, Lei A. Electrochemical-Oxidation-Induced Site-Selective Intramolecular C(sp3)–H Amination. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02847] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xia Hu
- Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People’s Republic of China
| | - Guoting Zhang
- Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People’s Republic of China
| | - Faxiang Bu
- Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People’s Republic of China
| | - Lei Nie
- Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People’s Republic of China
| | - Aiwen Lei
- Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People’s Republic of China
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32
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Na CG, Alexanian EJ. A General Approach to Site‐Specific, Intramolecular C−H Functionalization Using Dithiocarbamates. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806963] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Christina G. Na
- Department of ChemistryThe University of North Carolina at Chapel Hill Chapel Hill NC 27599 USA
| | - Erik J. Alexanian
- Department of ChemistryThe University of North Carolina at Chapel Hill Chapel Hill NC 27599 USA
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33
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Morcillo SP, Dauncey EM, Kim JH, Douglas JJ, Sheikh NS, Leonori D. Photoinduced Remote Functionalization of Amides and Amines Using Electrophilic Nitrogen Radicals. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807941] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sara P. Morcillo
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Elizabeth M. Dauncey
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Ji Hye Kim
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - James J. Douglas
- Early Chemical Development; Pharmaceutical Sciences; IMED Biotech Unit; AstraZeneca; Macclesfield SK10 2NA UK
| | - Nadeem S. Sheikh
- Department of Chemistry; Faculty of Science; King Faisal University; P.O. Box 380 Al-Ahsa 31982 Saudi Arabia
| | - Daniele Leonori
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
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34
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Tang Y, Qin Y, Meng D, Li C, Wei J, Yang M. Diverse secondary C(sp 3)-H bond functionalization via site-selective trifluoroacetoxylation of aliphatic amines. Chem Sci 2018; 9:6374-6378. [PMID: 30310565 PMCID: PMC6115674 DOI: 10.1039/c8sc01788c] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 06/28/2018] [Indexed: 02/02/2023] Open
Abstract
We describe a coinage-metal-catalyzed site-selective oxidation of secondary C(sp3)-H bonds for aliphatic amine substrates. Broad amine scope, good functional compatibility and late-stage diversification are demonstrated with this method. The steric demand of the β-substituents controlled diastereoselectivities under this catalytic system. The site selectivity favors secondary C(sp3)-H bonds over tertiary ones underscoring the unique synthetic potential of this method.
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Affiliation(s)
- Yongzhen Tang
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE , School of Chemistry and Chemical Engineering , Shaanxi Normal University , 620 West Chang'an Ave , Xi'an , 710119 , China . ;
| | - Yuman Qin
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE , School of Chemistry and Chemical Engineering , Shaanxi Normal University , 620 West Chang'an Ave , Xi'an , 710119 , China . ;
| | - Dongmei Meng
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE , School of Chemistry and Chemical Engineering , Shaanxi Normal University , 620 West Chang'an Ave , Xi'an , 710119 , China . ;
| | - Chaoqun Li
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE , School of Chemistry and Chemical Engineering , Shaanxi Normal University , 620 West Chang'an Ave , Xi'an , 710119 , China . ;
| | - Junfa Wei
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE , School of Chemistry and Chemical Engineering , Shaanxi Normal University , 620 West Chang'an Ave , Xi'an , 710119 , China . ;
| | - Mingyu Yang
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE , School of Chemistry and Chemical Engineering , Shaanxi Normal University , 620 West Chang'an Ave , Xi'an , 710119 , China . ;
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35
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Mason JD, Weinreb SM. Synthesis of Alstoscholarisines A-E, Monoterpene Indole Alkaloids with Modulating Effects on Neural Stem Cells. J Org Chem 2018; 83:5877-5896. [PMID: 29733650 DOI: 10.1021/acs.joc.8b00889] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A divergent synthetic strategy has been developed for stereoselective total syntheses of alstoscholarisines A-E, monoterpenoid indole alkaloids which are modulators of adult neuronal stem cells. A pivotal step includes an intermolecular Michael addition of an indole-2-acetic acid methyl ester enolate to an α,β-unsaturated N-sulfonyllactam to form the C15, C16 bond of the alkaloids. Other features of the strategy involve a selective partial reduction of an intermediate N-sulfonyllactam followed by cyclization to a bridged aminal system that serves as a key precursor for all five of the alkaloids as well as the use of an allyl group as a masked aldehyde equivalent.
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Affiliation(s)
- Jeremy D Mason
- Department of Chemistry , The Pennsylvania State University University Park , Pennsylvania 16802 , United States
| | - Steven M Weinreb
- Department of Chemistry , The Pennsylvania State University University Park , Pennsylvania 16802 , United States
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36
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Stateman LM, Nakafuku KM, Nagib DA. Remote C-H Functionalization via Selective Hydrogen Atom Transfer. SYNTHESIS-STUTTGART 2018; 50:1569-1586. [PMID: 29755145 PMCID: PMC5940016 DOI: 10.1055/s-0036-1591930] [Citation(s) in RCA: 289] [Impact Index Per Article: 48.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The selective functionalization of remote C-H bonds via intramolecular hydrogen atom transfer (HAT) is transformative for organic synthesis. This radical-mediated strategy provides access to novel reactivity that is complementary to closed-shell pathways. As modern methods for mild generation of radicals are continually developed, inherent selectivity paradigms of HAT mechanisms offer unparalleled opportunities for developing new strategies for C-H functionalization. This review outlines the history, recent advances, and mechanistic underpinnings of intramolecular HAT as a guide to addressing ongoing challenges in this arena.
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Affiliation(s)
- Leah M Stateman
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, 43210, USA
| | - Kohki M Nakafuku
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, 43210, USA
| | - David A Nagib
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, 43210, USA
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37
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Hu A, Guo JJ, Pan H, Tang H, Gao Z, Zuo Z. δ-Selective Functionalization of Alkanols Enabled by Visible-Light-Induced Ligand-to-Metal Charge Transfer. J Am Chem Soc 2018; 140:1612-1616. [DOI: 10.1021/jacs.7b13131] [Citation(s) in RCA: 214] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Anhua Hu
- School
of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Jing-Jing Guo
- School
of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Hui Pan
- School
of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Haoming Tang
- School
of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Zhaobo Gao
- Jiuzhou Pharmaceutical, Zhejiang 318000, China
| | - Zhiwei Zuo
- School
of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
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38
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Dauncey EM, Morcillo SP, Douglas JJ, Sheikh NS, Leonori D. Photoinduced Remote Functionalisations by Iminyl Radical Promoted C-C and C-H Bond Cleavage Cascades. Angew Chem Int Ed Engl 2018; 57:744-748. [PMID: 29114978 PMCID: PMC5814920 DOI: 10.1002/anie.201710790] [Citation(s) in RCA: 289] [Impact Index Per Article: 48.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Indexed: 11/20/2022]
Abstract
A photoinduced cascade strategy leading to a variety of differentially functionalised nitriles and ketones has been developed. These reactions rely on the oxidative generation of iminyl radicals from simple oximes. Radical transposition by C(sp3 )-(sp3 ) and C(sp3 )-H bond cleavage gives access to distal carbon radicals that undergo SH 2 functionalisations. These mild, visible-light-mediated procedures can be used for remote fluorination, chlorination, and azidation, and were applied to the modification of bioactive and structurally complex molecules.
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Affiliation(s)
| | - Sara P. Morcillo
- School of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - James J. Douglas
- Early Chemical Development, Pharmaceutical Sciences, IMED Biotech UnitAstraZenecaMacclesfieldSK10 2NAUK
| | - Nadeem S. Sheikh
- Department of ChemistryFaculty of ScienceKing Faisal UniversityP.O. Box 380Al-Ahsa31982Saudi Arabia
| | - Daniele Leonori
- School of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
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39
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Dauncey EM, Morcillo SP, Douglas JJ, Sheikh NS, Leonori D. Photoinduced Remote Functionalisations by Iminyl Radical Promoted C−C and C−H Bond Cleavage Cascades. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201710790] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | - Sara P. Morcillo
- School of ChemistryUniversity of Manchester Oxford Road Manchester M13 9PL UK
| | - James J. Douglas
- Early Chemical Development, Pharmaceutical Sciences, IMED Biotech UnitAstraZeneca Macclesfield SK10 2NA UK
| | - Nadeem S. Sheikh
- Department of ChemistryFaculty of ScienceKing Faisal University P.O. Box 380 Al-Ahsa 31982 Saudi Arabia
| | - Daniele Leonori
- School of ChemistryUniversity of Manchester Oxford Road Manchester M13 9PL UK
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Zhang D, Wang H, Cheng H, Hernández JG, Bolm C. An Iodine-Mediated Hofmann-Löffler-Freytag Reaction of Sulfoximines Leading to Dihydroisothiazole Oxides. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701178] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Duo Zhang
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1, D- 52074 Aachen Germany
| | - Han Wang
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1, D- 52074 Aachen Germany
| | - Hanchao Cheng
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1, D- 52074 Aachen Germany
| | - José G. Hernández
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1, D- 52074 Aachen Germany
| | - Carsten Bolm
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1, D- 52074 Aachen Germany
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41
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Wappes EA, Nakafuku KM, Nagib DA. Directed β C-H Amination of Alcohols via Radical Relay Chaperones. J Am Chem Soc 2017; 139:10204-10207. [PMID: 28741940 PMCID: PMC5940001 DOI: 10.1021/jacs.7b05214] [Citation(s) in RCA: 143] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A radical-mediated strategy for β C-H amination of alcohols has been developed. This approach employs a radical relay chaperone, which serves as a traceless director that facilitates selective C-H functionalization via 1,5-hydrogen atom transfer (HAT) and enables net incorporation of ammonia at the β carbon of alcohols. The chaperones presented herein enable direct access to imidate radicals, allowing their first use for H atom abstraction. A streamlined protocol enables rapid conversion of alcohols to their β-amino analogs (via in situ conversion of alcohols to imidates, directed C-H amination, and hydrolysis to NH2). Mechanistic experiments indicate HAT is rate-limiting, whereas intramolecular amination is product- and stereo-determining.
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Affiliation(s)
| | | | - David A. Nagib
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
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43
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Meng D, Tang Y, Wei J, Shi X, Yang M. Copper-catalyzed remote (δ) C(sp3)–H bond amination: a practical strategy to construct pyrrolidine derivatives. Chem Commun (Camb) 2017; 53:5744-5747. [DOI: 10.1039/c7cc02624b] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reported a copper-catalyzed remote C(sp3)–H bond amination of primary, secondary and tertiary C–H bonds, which converted acyclic amines to pyrrolidine derivatives.
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Affiliation(s)
- Dongmei Meng
- Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Yongzhen Tang
- Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Junfa Wei
- Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Xianying Shi
- Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Mingyu Yang
- Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
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44
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Wang R, Zou H, Xiong Y, Yi N, Deng W, Xiang J. PhI(OAc)2-mediated 1,2-aminohalogenation of alkynes: a general access to (E)-4-(halomethylene)oxazolidin-2-ones. Org Biomol Chem 2017; 15:3964-3967. [DOI: 10.1039/c7ob00509a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A new PhI(OAc)2-mediated 1,2-aminohalogenation of prop-2-yn-1-yl carbamates and halogen sources is presented with excellent selectivity. The reaction is general for the construction of (E)-4-(halomethylene)oxazolidin-2-ones through the three-membered ring or N-radical.
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Affiliation(s)
- RuiJia Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- China
| | - Huaxu Zou
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- China
| | - Yi Xiong
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- China
| | - Niannian Yi
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- China
| | - Wei Deng
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- China
| | - Jiannan Xiang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- China
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45
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Miyazawa K, Koike T, Akita M. Aminohydroxylation of olefins with iminopyridinium ylides by dual Ir photocatalysis and Sc(OTf)3 catalysis. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.05.045] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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46
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Pang S, Shi F. Oxidative amination of benzylic alkanes with nitrobenzene derivatives as nitrogen sources. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.11.057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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47
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Wappes EA, Fosu SC, Chopko TC, Nagib DA. Triiodide-Mediated δ-Amination of Secondary C-H Bonds. Angew Chem Int Ed Engl 2016; 55:9974-8. [PMID: 27384522 DOI: 10.1002/anie.201604704] [Citation(s) in RCA: 202] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/02/2016] [Indexed: 12/11/2022]
Abstract
The Cδ -H amination of unactivated, secondary C-H bonds to form a broad range of functionalized pyrrolidines has been developed by a triiodide (I3 (-) )-mediated strategy. By in situ 1) oxidation of sodium iodide and 2) sequestration of the transiently generated iodine (I2 ) as I3 (-) , this approach precludes undesired I2 -mediated decomposition which can otherwise limit synthetic utility to only weak C(sp(3) )-H bonds. The mechanism of this triiodide-mediated cyclization of unbiased, secondary C(sp(3) )-H bonds, by either thermal or photolytic initiation, is supported by NMR and UV/Vis data, as well as intercepted intermediates.
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Affiliation(s)
- Ethan A Wappes
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, 43210, USA
| | - Stacy C Fosu
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, 43210, USA
| | - Trevor C Chopko
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, 43210, USA
| | - David A Nagib
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, 43210, USA.
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48
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Wappes EA, Fosu SC, Chopko TC, Nagib DA. Triiodide-Mediated δ-Amination of Secondary C−H Bonds. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604704] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ethan A. Wappes
- Department of Chemistry and Biochemistry; The Ohio State University; Columbus OH 43210 USA
| | - Stacy C. Fosu
- Department of Chemistry and Biochemistry; The Ohio State University; Columbus OH 43210 USA
| | - Trevor C. Chopko
- Department of Chemistry and Biochemistry; The Ohio State University; Columbus OH 43210 USA
| | - David A. Nagib
- Department of Chemistry and Biochemistry; The Ohio State University; Columbus OH 43210 USA
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49
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Chen JQ, Wei YL, Xu GQ, Liang YM, Xu PF. Intramolecular 1,5-H transfer reaction of aryl iodides through visible-light photoredox catalysis: a concise method for the synthesis of natural product scaffolds. Chem Commun (Camb) 2016; 52:6455-8. [PMID: 27100267 DOI: 10.1039/c6cc02007k] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The intramolecular 1,5-H transfer reaction of the aryl radicals generated from unactivated aryl iodides by photocatalysis is described. The features of this transformation are operational simplicity, excellent yields, mild reaction conditions, and good functional group tolerance. With this approach, a more concise formal synthesis of (±)-coerulescine and (±)-physovenine is accomplished.
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Affiliation(s)
- Jian-Qiang Chen
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China.
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Affiliation(s)
- Tobias Gylling Frihed
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm Platz 1 45470 Mülheim an der Ruhr Germany
| | - Mikael Bols
- Department of Chemistry; University of Copenhagen; Universitetsparken 5 2100 Copenhagen Denmark
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