1
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Liu Q, Wang X, Gu X, Dai H, Huang Z, Zhao Y. Visible-Light-Induced Difunctionalization of 3-Butenoic Acid with Bromodifluoromethyl Heteroarylsulfones. Org Lett 2024. [PMID: 39037910 DOI: 10.1021/acs.orglett.4c02277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
Herein, we report a visible-light-induced iridium-promoted direct bifunctionalization of 3-butenoic acid with bromodifluoromethyl heteroarylsulfones. This methodology enables the concurrent introduction of difluoromethyl heteroarylsulfone and bromine groups into 3-butenoic acid under mild reaction conditions. Various α-substituted 3-butenoic acids and bromodifluoromethyl heteroarylsulfones were found to be compatible, yielding the corresponding products in moderate to good yields. This method opens a new route for the synthesis of fluorocarboxylic acid derivatives.
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Affiliation(s)
- Qianqian Liu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, P. R. China
| | - Xiaoping Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, P. R. China
| | - Xuefeng Gu
- Yonghua Chemical Co., Ltd., Xiangqiao Village, Zhitang (heshi) Town, Changshu 215500, P. R. China
| | - Huiming Dai
- Yonghua Chemical Co., Ltd., Xiangqiao Village, Zhitang (heshi) Town, Changshu 215500, P. R. China
| | - Zhibin Huang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, P. R. China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, P. R. China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453000, P. R. China
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2
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Liu J, Guo L, Chen Z, Guo Y, Zhang W, Peng X, Wang Z, Zeng YF. Photoredox-catalyzed unsymmetrical diamination of alkenes for access to vicinal diamines. Chem Commun (Camb) 2024; 60:3413-3416. [PMID: 38441256 DOI: 10.1039/d4cc00330f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
A photoredox-catalyzed unsymmetrical diamination of alkenes by using N-aminopyridinium salts and nitriles as the amination reagents has been developed. Various vicinal diamines were obtained in moderate to excellent yields under mild reaction conditions. Furthermore, this protocol could be applied in the late-stage modification of pharmaceuticals and natural products. Preliminary mechanistic studies suggested that this methodology may undergo a radical pathway followed by a Ritter-type reaction.
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Affiliation(s)
- Jie Liu
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Lu Guo
- Department of Sports Medicine, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Zhang Chen
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Yu Guo
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Wei Zhang
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Xue Peng
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Zhen Wang
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
- MOE Key Lab of Rare Pediatric Diseases, University of South China, Hengyang, Hunan, 421001, China
| | - Yao-Fu Zeng
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
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3
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Yang LF, Xiong ZQ, Ouyang XH, Wang QA, Li JH. Cobalt-Promoted Photoredox 1,2-Amidoamination of Alkenes with N-Sulfonamidopyridin-1-ium Salts and Free Amines. Org Lett 2024; 26:1667-1671. [PMID: 38380904 DOI: 10.1021/acs.orglett.4c00155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
A cobalt-promoted photoredox 1,2-amidoamination of alkenes with N-sulfonamidopyridin-1-ium salts and free amines for the synthesis of unsymmetrical vicinal diamines has been developed. The reaction handles N-(sulfonamido)pyridin-1-ium salts as the sulfonamidyl radical precursors and free amines as the nucleophilic terminating reagents to enable the formation of two new C(sp3)-N bonds in a single reaction step and offers a route to selectively producing unsymmetrical vicinal diamines with an exquisite selectivity and a good compatibility of functional groups.
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Affiliation(s)
- Liang-Feng Yang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Zhi-Qiang Xiong
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Xuan-Hui Ouyang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Qiu-An Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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4
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Dong J, Liang Y, Li Y, Guan W, Zhang Q, Fu J. A Catalytic Three-Component Aminofluorination of Unactivated Alkenes with Electron-Rich Amino Sources. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305006. [PMID: 38226424 DOI: 10.1002/advs.202305006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/13/2023] [Indexed: 01/17/2024]
Abstract
We present herein a copper-catalyzed three-component aminofluorination of unactivated alkenes with N-bromodialkylamines and readily available nucleophilic fluoride under the assistance of a bidentate auxiliary. This protocol exhibits excellent functional group tolerance toward a wide range of unactivated alkenes and N-bromodialkylamines to furnish the corresponding β-fluoroalkylamines in a highly regio- and diastereoselective manner. The appropriate choice of nucleophilic fluoro source is essential to make this reaction a reality. Further DFT calculations show that the exothermic ion exchange between external fluoride ion and Cu(II) intermediate provides additional driving force to the irreversible migratory insertion, which offsets the unfavorable reaction energetics associated with the subsequent C(sp3)-F reductive elimination. This finding offers a new avenue to catalytic intermolecular aminofluorination of unactivated alkenes with electron-rich amino sources via a remarkable reductive elimination of Cu(III) species to forge the C(sp3)-F bonds.
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Affiliation(s)
- Junchao Dong
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis and Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Yujie Liang
- Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Yang Li
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis and Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
- Warshel Institute for Computational Biology and School of Life and Health Sciences, School of Medicine, The Chinese University of Hong Kong, Shenzhen, 518172, P. R. China
| | - Wei Guan
- Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Qian Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis and Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Junkai Fu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis and Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
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5
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Kumar R. Transition-Metal-Catalyzed 1,2-Diaminations of Olefins: Synthetic Methodologies and Mechanistic Studies. Chem Asian J 2024; 19:e202300705. [PMID: 37743249 DOI: 10.1002/asia.202300705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/20/2023] [Accepted: 09/20/2023] [Indexed: 09/26/2023]
Abstract
1,2-Diamines are synthetically important motifs in organo-catalysis, natural products, and drug research. Continuous utilization of transition-metal based catalyst in direct 1,2-diamination of olefines, in contrast to metal-free transformations, with numerous impressive advances made in recent years (2015-2023). This review summarized contemporary research on the transition-metal catalyzed/mediated [e. g., Cu(II), Pd(II), Fe(II), Rh(III), Ir(III), and Co(II)] 1,2-diamination (asymmetric and non-asymmetric) especially emphasizing the recent synthetic methodologies and mechanistic understandings. Moreover, up-to-date discussion on (i) paramount role of oxidant and catalyst (ii) key achievements (iii) generality and uniqueness, (iv) synthetic limitations or future challenges, and (v) future opportunities are summarized related to this potential area.
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Affiliation(s)
- Ravinder Kumar
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana, INDIA
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6
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Nagamalla S, Thomas AA, Nirpal AK, Mague JT, Sathyamoorthi S. Ring Opening of Aziridines by Pendant Sulfamates Allows for Regioselective and Stereospecific Preparation of Vicinal Diamines. J Org Chem 2023; 88:15989-16006. [PMID: 37903411 PMCID: PMC10799289 DOI: 10.1021/acs.joc.3c01731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2023]
Abstract
The ring opening of aziridines by pendant sulfamates is a viable strategy for the rapid preparation of vicinal diamines. Our reaction is compatible with both disubstituted cis- and trans-aziridines; unsubstituted, N-alkyl, and N-aryl sulfamates engage effectively. In all cases examined, the cyclization reaction is perfectly regioselective and stereospecific. Once activated, the product oxathiazinane heterocycles can be ring opened with a diverse range of nucleophiles.
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Affiliation(s)
- Someshwar Nagamalla
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
| | - Annu Anna Thomas
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
| | - Appasaheb K. Nirpal
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Shyam Sathyamoorthi
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
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7
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Liu Q, Zhou Z, Huang Z, Zhao Y. Palladium-Catalyzed E-Selective Oxidative Amination of Aromatic Amine with 3-Butenoic Acid. J Org Chem 2023; 88:15350-15357. [PMID: 37871285 DOI: 10.1021/acs.joc.3c01843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
A palladium-catalyzed oxidative amination of inactive olefins with an aromatic amine was developed using a copper acetate oxidant to yield corresponding secondary and tertiary enamines in moderate to good yields. This new procedure outlines an efficient approach for the construction of enamine skeletons.
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Affiliation(s)
- Qianqian Liu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, PR China
| | - Zheng Zhou
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, PR China
| | - Zhibin Huang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, PR China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, PR China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453000, P. R. China
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8
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Kumar R, Khanna Y, Kaushik P, Kamal R, Khokhar S. Recent Advancements on Metal-Free Vicinal Diamination of Alkenes: Synthetic Strategies and Mechanistic Insights. Chem Asian J 2023; 18:e202300017. [PMID: 36869415 DOI: 10.1002/asia.202300017] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/25/2023] [Accepted: 03/03/2023] [Indexed: 03/05/2023]
Abstract
The oxidative aminative vicinal difunctionalization of alkenes or related chemical feedstocks has emerged as sustainable and multipurpose strategies that can efficiently construct two -N bonds, and simultaneously prepare the synthetically fascinating molecules and catalysis in organic synthesis that typically required multi-step reactions. This review summarized the impressive breakthroughs on synthetic methodologies (2015-2022) documented especially over inter/intra-molecular vicinal diamination of alkenes with electron-rich or deficient diverse nitrogen sources. These unprecedented strategies predominantly involved iodine-based reagents/catalysts, which resent the interest of organic chemists due to their impressive role as flexible, non-toxic, and environmentally friendly reagents, resulting in a wide variety of synthetically useful organic molecules. Moreover, the information collected also describes the significant role of catalyst, terminal oxidant, substrate scope, synthetic applications, and their unsuccessful results to highlight the limitations. Special emphasis has been given to proposed mechanistic pathways to determine the key factors governing the issues of regioselectivity, enantioselectivity, and diastereoselectivity ratios.
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Affiliation(s)
- Ravinder Kumar
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana (INDIA
| | - Yugam Khanna
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana (INDIA
| | - Parul Kaushik
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana (INDIA
| | - Raj Kamal
- Department of Chemistry, Kurukshetra University, Kurukshetra, 136119, Haryana, INDIA
| | - Shiwani Khokhar
- Department of Chemistry, Kurukshetra University, Kurukshetra, 136119, Haryana, INDIA
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9
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Cao TY, Qi L, Dong W, Yan ZM, Ji SC, Du JL, Zhang L, Li W, Wang LJ. NIS-Promoted Selective Amino-Diazidation and Amino-Iodoazidation of O-Homoallyl Benzimidates: Synthesis of Vicinal Diazido 1,3-Oxazines and Vicinal Iodoazido 1,3-Oxazines. J Org Chem 2022; 87:16578-16591. [PMID: 36450035 DOI: 10.1021/acs.joc.2c02252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Amines, especially those with multi-nitrogen moieties, are widespread in natural products and biologically active compounds. Thus, the development of direct and efficient methods to introduce multiple nitrogen-containing fragments into compounds in one step is highly desirable yet challenging. Herein, we report an NIS-promoted selective amino-diazidation and amino-iodoazidation of O-homoallyl benzimidates with NaN3. By using this protocol, a variety of vicinal diazido-substituted 1,3-oxazines and vicinal iodoazido-substituted 1,3-oxazines were directly synthesized in a controllable manner. Preliminary mechanistic investigations revealed that the reaction operates through a NIS-promoted four-step cascade process. The developed method has the merits of metal-free, excellent functional group compatibility, simple operation, and mild conditions.
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Affiliation(s)
- Tong-Yang Cao
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
| | - Lin Qi
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
| | - Wei Dong
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
| | - Zhi-Min Yan
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
| | - Shi-Chao Ji
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
| | - Jian-Long Du
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
| | - Linlin Zhang
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
| | - Wei Li
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
| | - Li-Jing Wang
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
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10
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Müller N, Schreib BS, Leutenegger SU, Carreira EM. Picolinamides and Iodoalkynes Enable Palladium-Catalyzed syn-Aminoalkynylation of Di- and Trisubstituted Alkenes to Give Pyrrolidines. Angew Chem Int Ed Engl 2022; 61:e202204535. [PMID: 35445778 PMCID: PMC9545406 DOI: 10.1002/anie.202204535] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Indexed: 12/15/2022]
Abstract
Palladium-catalyzed aminoalkynylation of electronically unbiased olefins with iodoalkynes is reported. The picolinamide auxiliary enables for the first time the syn-selective aminoalkynylation of mono-, di- and trisubstituted alkenes to afford the corresponding pyrrolidines in up to 97 % yield and as single diastereomers. Furthermore, through a C-H activation approach, the picolinamide allows the rapid synthesis of functionalized olefins, which are suitable cyclization precursors. Facile and orthogonal deprotection of the amides and Sii Pr3 -acetylenes in the products, and a subsequent Pictet-Spengler reaction is demonstrated.
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Affiliation(s)
- Nicolas Müller
- Laboratorium für Organische Chemie, HCI H335, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Benedikt S Schreib
- Laboratorium für Organische Chemie, HCI H335, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Sebastian U Leutenegger
- Laboratorium für Organische Chemie, HCI H335, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Erick M Carreira
- Laboratorium für Organische Chemie, HCI H335, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
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11
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Gasser VCM, Makai S, Morandi B. The advent of electrophilic hydroxylamine-derived reagents for the direct preparation of unprotected amines. Chem Commun (Camb) 2022; 58:9991-10003. [PMID: 35993918 PMCID: PMC9453917 DOI: 10.1039/d2cc02431d] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 07/20/2022] [Indexed: 11/21/2022]
Abstract
Electrophilic aminating reagents have seen a renaissance in recent years as effective nitrogen sources for the synthesis of unprotected amino functionalities. Based on their reactivity, several noble and non-noble transition metal catalysed amination reactions have been developed. These include the aziridination and difunctionalisation of alkenes, the amination of arenes as well as the synthesis of aminated sulfur compounds. In particular, the use of hydroxylamine-derived (N-O) reagents, such as PONT (PivONH3OTf), has enabled the introduction of unprotected amino groups on various different feedstock compounds, such as alkenes, arenes and thiols. This strategy obviates undesired protecting-group manipulations and thus improves step efficiency and atom economy. Overall, this feature article gives a recent update on several reactions that have been unlocked by employing versatile hydroxylamine-derived aminating reagents, which facilitate the generation of unprotected primary, secondary and tertiary amino groups.
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Affiliation(s)
- Valentina C M Gasser
- Laboratorium für Organische Chemie ETH Zürich, Vladimir-Prelog-Weg 3, HCI, Zürich 8093, Switzerland.
| | - Szabolcs Makai
- Laboratorium für Organische Chemie ETH Zürich, Vladimir-Prelog-Weg 3, HCI, Zürich 8093, Switzerland.
| | - Bill Morandi
- Laboratorium für Organische Chemie ETH Zürich, Vladimir-Prelog-Weg 3, HCI, Zürich 8093, Switzerland.
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12
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Wang C, Liu B, Shao Z, Zhou J, Shao A, Zou LH, Wen J. Synthesis of 1,2-Diamines from Vinyl Sulfonium Salts and Arylamines. Org Lett 2022; 24:6455-6459. [PMID: 36037330 DOI: 10.1021/acs.orglett.2c02604] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A procedure for the synthesis of 1,2-diamines from vinyl sulfonium salts and arylamines under mild conditions was developed. This present synthetic protocol not only obviates the need for a transition-metal catalyst and an oxidizing reagent but also features a broad substrates scope. The practicability of this protocol is demonstrated by the one-pot synthesis, a scale-up reaction, and transformations of the products to diverse N-heterocyclic compounds. Mechanistic studies indicate that the formation of aziridine plays a key role during this diamination process.
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Affiliation(s)
- Cheng Wang
- School of Life Science and Health Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Biao Liu
- School of Life Science and Health Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Zeyu Shao
- School of Life Science and Health Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Junqi Zhou
- School of Life Science and Health Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Andong Shao
- School of Life Science and Health Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Liang-Hua Zou
- School of Life Science and Health Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Jian Wen
- School of Life Science and Health Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
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13
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Lee BJ, Ickes AR, Gupta AK, Ensign SC, Ho TD, Tarasewicz A, Vanable EP, Kortman GD, Hull KL. Synthesis of Unsymmetrical Vicinal Diamines via Directed Hydroamination. Org Lett 2022; 24:5513-5518. [PMID: 35862860 DOI: 10.1021/acs.orglett.2c01911] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Vicinal diamines are a common motif found in biologically active molecules. The hydroamination of allyl amine derivatives is a powerful approach for the synthesis of substituted 1,2-diamines. Herein, the rhodium-catalyzed hydroamination of primary and secondary allylic amines using diverse amine nucleophiles, including primary, secondary, acyclic, and cyclic aliphatic amines to access a wide range of unsymmetrical vicinal diamines, is presented. The utility of this methodology is further demonstrated through the rapid synthesis of several bioactive molecules and analogs.
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Affiliation(s)
- Byung Joo Lee
- Department of Chemistry, University of Texas at Austin, 105 E 24th St., Austin, Texas 78712, United States
| | - Andrew R Ickes
- Department of Chemistry, University of Illinois Urbana-Champaign, 600 S. Mathews, Urbana, Illinois 61812, United States
| | - Anil K Gupta
- Department of Chemistry, University of Illinois Urbana-Champaign, 600 S. Mathews, Urbana, Illinois 61812, United States
| | - Seth C Ensign
- Department of Chemistry, University of Illinois Urbana-Champaign, 600 S. Mathews, Urbana, Illinois 61812, United States
| | - Tam D Ho
- Department of Chemistry, University of Texas at Austin, 105 E 24th St., Austin, Texas 78712, United States
| | - Anika Tarasewicz
- Department of Chemistry, University of Texas at Austin, 105 E 24th St., Austin, Texas 78712, United States
| | - Evan P Vanable
- Department of Chemistry and Biochemistry, Elmhust University, 190 Prospect Avenue, Elmhurst, Illinois 60126, United States
| | - Gregory D Kortman
- Department of Chemistry, University of Texas at Austin, 105 E 24th St., Austin, Texas 78712, United States
| | - Kami L Hull
- Department of Chemistry, University of Texas at Austin, 105 E 24th St., Austin, Texas 78712, United States.,Department of Chemistry, University of Illinois Urbana-Champaign, 600 S. Mathews, Urbana, Illinois 61812, United States
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14
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Müller N, Schreib BS, Leutenegger SU, Carreira EM. Picolinamides and Iodoalkynes Enable Palladium‐Catalyzed syn‐Aminoalkynylation of Di‐ and Trisubstituted Alkenes to Give Pyrrolidines. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204535] [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)
- Nicolas Müller
- University of Innsbruck: Universitat Innsbruck Chemistry AUSTRIA
| | - Benedikt S Schreib
- Eidgenössische Technische Hochschule Zürich: Eidgenossische Technische Hochschule Zurich DCHAB SWITZERLAND
| | - Sebastian U Leutenegger
- Eidgenössische Technische Hochschule Zürich: Eidgenossische Technische Hochschule Zurich DCHAB SWITZERLAND
| | - Erick Moran Carreira
- ETH-Hönggerberg Laboratorium für Anorganische Chemie Vladimir Prelog Weg 3HCl H335 8093 Zürich SWITZERLAND
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15
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Pratley C, Fenner S, Murphy JA. Nitrogen-Centered Radicals in Functionalization of sp 2 Systems: Generation, Reactivity, and Applications in Synthesis. Chem Rev 2022; 122:8181-8260. [PMID: 35285636 DOI: 10.1021/acs.chemrev.1c00831] [Citation(s) in RCA: 87] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The chemistry of nitrogen-centered radicals (NCRs) has plentiful applications in organic synthesis, and they continue to expand as our understanding of these reactive species increases. The utility of these reactive intermediates is demonstrated in the recent advances in C-H amination and the (di)amination of alkenes. Synthesis of previously challenging structures can be achieved by efficient functionalization of sp2 moieties without prefunctionalization, allowing for faster and more streamlined synthesis. This Review addresses the generation, reactivity, and application of NCRs, including, but not limited to, iminyl, aminyl, amidyl, and aminium species. Contributions from early discovery up to the most recent examples have been highlighted, covering radical initiation, thermolysis, photolysis, and, more recently, photoredox catalysis. Radical-mediated intermolecular amination of (hetero)arenes can occur with a variety of complex amine precursors, generating aniline derivatives, an important class of structures for drug discovery and development. Functionalization of olefins is achievable in high anti-Markovnikov regioselectivity and allows access to difunctionalized structures when the intermediate carbon radicals are trapped. Additionally, the reactivity of NCRs can be harnessed for the rapid construction of N-heterocycles such as pyrrolidines, phenanthridines, quinoxalines, and quinazolinones.
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Affiliation(s)
- Cassie Pratley
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom.,GSK Medicines Research Centre, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Sabine Fenner
- GSK Medicines Research Centre, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - John A Murphy
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom
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16
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Patel M, Desai B, Sheth A, Dholakiya BZ, Naveen T. Recent Advances in Mono‐ and Difunctionalization of Unactivated Olefins. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100666] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Monak Patel
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
| | - Bhargav Desai
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
| | - Aakash Sheth
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
| | - Bharatkumar Z. Dholakiya
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
| | - Togati Naveen
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
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