1
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Li J, Wang Y, Zhang R, Li J, Dong D. Triflic Acid-Promoted 1,2-Amino Migration Reactions in α-Arylaminoacrylamides: Access to Substituted β-Aminoamides. J Org Chem 2024; 89:8861-8870. [PMID: 38845104 DOI: 10.1021/acs.joc.4c00731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
A straightforward synthesis of substituted β-aminoamides from α-arylamino-β-hydroxyacrylamides, α-arylamino-β-oxoamides, or their tautomeric mixture has been described. The (E)-enol triflate intermediates are readily generated in situ from these substrates in the presence of triflic anhydride (Tf2O) and triethylamine (Et3N) in a chemoselective manner and undergo triflic acid (TfOH)-promoted cyclization and ring-opening reactions with alcohols to deliver the desired products. The one-pot two-step synthetic protocol features the use of readily available starting materials, mild reaction conditions, high chemoselectivity, operational simplicity, and a wide range of synthetic potential of the products.
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Affiliation(s)
- Jiawang Li
- CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yu Wang
- CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Rui Zhang
- CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Jiacheng Li
- CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Dewen Dong
- CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
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2
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Sahoo S, Harfmann B, Bhatia H, Singh H, Balijapelly S, Choudhury A, Stavropoulos P. A Comparative Study of Cationic Copper(I) Reagents Supported by Bipodal Tetramethylguanidinyl-Containing Ligands as Nitrene-Transfer Catalysts. ACS OMEGA 2024; 9:15697-15708. [PMID: 38585072 PMCID: PMC10993379 DOI: 10.1021/acsomega.4c00909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 03/02/2024] [Accepted: 03/07/2024] [Indexed: 04/09/2024]
Abstract
The bipodal compounds [(TMG2biphenN-R)CuI-NCMe](PF6) (R = Me, Ar (4-CF3Ph-)) and [(TMG2biphenN-Me)CuI-I] have been synthesized with ligands that feature a diarylmethyl- and triaryl-amine framework and superbasic tetramethylguanidinyl residues (TMG). The cationic Cu(I) sites mediate catalytic nitrene-transfer reactions between the imidoiodinane PhI = NTs (Ts = tosyl) and a panel of styrenes in MeCN, to afford aziridines, demonstrating comparable reactivity profiles. The copper reagents have been further explored to execute C-H amination reactions with a variety of aliphatic and aromatic hydrocarbons and two distinct nitrene sources PhI = NTs and PhI = NTces (Tces = 2,2,2-trichloroethylsulfamate) in benzene/HFIP (10:2 v/v). Good yields have been obtained for sec-benzylic and tert-C-H bonds of various substrates, especially with the more electron-deficient catalyst [(TMG2biphenN-Ar)CuI-NCMe](PF6). In conjunction with earlier studies, the order of reactivity of these bipodal cationic reagents as a function of the metal employed is established as Cu > Fe > Co ≥ Mn. However, as opposed to the base-metal analogues, the bipodal Cu reagents are less reactive than a similar tripodal Cu catalyst. The observed fluorophilicity of the bipodal Cu compounds may provide a deactivation pathway.
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Affiliation(s)
- Suraj
Kumar Sahoo
- Department
of Chemistry, Missouri University of Science
and Technology, Rolla, Missouri 65409, United States
| | - Brent Harfmann
- Department
of Chemistry, Missouri University of Science
and Technology, Rolla, Missouri 65409, United States
| | - Himanshu Bhatia
- Department
of Chemistry, Missouri University of Science
and Technology, Rolla, Missouri 65409, United States
| | - Harish Singh
- Department
of Chemistry, Missouri University of Science
and Technology, Rolla, Missouri 65409, United States
| | - Srikanth Balijapelly
- Department
of Chemistry, Missouri University of Science
and Technology, Rolla, Missouri 65409, United States
| | - Amitava Choudhury
- Department
of Chemistry, Missouri University of Science
and Technology, Rolla, Missouri 65409, United States
| | - Pericles Stavropoulos
- Department
of Chemistry, Missouri University of Science
and Technology, Rolla, Missouri 65409, United States
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3
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Samantaray S, Maharana PK, Kar S, Saha S, Punniyamurthy T. Redox-neutral zinc-catalyzed cascade [1,4]-H shift/annulation of diaziridines with donor-acceptor aziridines. Chem Commun (Camb) 2024; 60:3441-3444. [PMID: 38445334 DOI: 10.1039/d4cc00226a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
The coupling of diaziridines with donor-acceptor aziridines (DAAs) has been achieved using Zn-catalysis to furnish imidazopyrazole-4,4-dicarboxylates via [1,4]-hydride shift. The use of Zn-catalysis, [1,4]-hydride shift, natural product modification and a late-stage molecular docking study are important practical features.
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Affiliation(s)
- Swati Samantaray
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Prabhat Kumar Maharana
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Subhradeep Kar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Sharajit Saha
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
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4
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Banuprakash Goud S, Lal Dhakar R, Samanta S. Copper(I)-Photocatalyzed Diastereoselective Aziridination of N-Sulfonyl Imines with Vinyl Azides: Application to Benzo[f][1,2,3]oxathiazepines Dioxides and Fused Isoxazolines. Chem Asian J 2024; 19:e202300904. [PMID: 38018300 DOI: 10.1002/asia.202300904] [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: 10/13/2023] [Revised: 11/27/2023] [Accepted: 11/27/2023] [Indexed: 11/30/2023]
Abstract
An in situ generated photoactive copper(I)-complex-catalyzed aziridination reaction of cyclic N-sulfonyl imines with α-aryl-substituted vinyl azides irradiated by blue-LEDs light is reported for the first time. This novel SET process represents a mild, sustainable, and pragmatic method for accessing synthetically resourceful sulfamidate-fused aziridines in acceptable chemical yields with excellent diastereoselectivities. Delightedly, pharmacologically attractive benzo[f][1,2,3]oxathiazepine dioxides and fused isoxazoline frameworks were achieved through our newly developed metal-free based ring-expansion techniques, highlighting the synthetic value of accessed aziridines. Finally, the possible mechanism for [2+1] aza-cyclization was presented based on the conduction of a series of control experiments.
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Affiliation(s)
- S Banuprakash Goud
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, 453552, Madhya Pradesh, India
| | - Raju Lal Dhakar
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, 453552, Madhya Pradesh, India
| | - Sampak Samanta
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, 453552, Madhya Pradesh, India
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5
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Xu H, Wang DS, Zhu Z, Deb A, Zhang XP. New Mode of Asymmetric Induction for Enantioselective Radical N-Heterobicyclization via Kinetically Stable Chiral Radical Center. Chem 2024; 10:283-298. [PMID: 38313041 PMCID: PMC10836202 DOI: 10.1016/j.chempr.2023.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2024]
Abstract
Enantioselective radical N-heterobicyclization of N-allylsulfamoyl azides have been developed via metalloradical catalysis (MRC). The Co(II)-based catalytic system can homolytically activate the organic azides with varied electronic and steric properties for asymmetric radical N-heterobicyclization under mild conditions without the need of oxidants, allowing for stereoselective construction of chiral [3.1.0]-bicyclic sulfamoyl aziridines in excellent yields with high diastereoselectivities and enantioselectivities. The key to achieving the enantioselective radical process relies on catalyst development through ligand design. We demonstrate that the use of new-generation D2-symmetric chiral bridged amidoporphyrin ligand HuPhyrin with judicious variation of the alkyl bridge length can dictate both reactivity and selectivity of Co(II)-based MRC. We present both experimental and computational studies that shed light on the working details of the unprecedented mode of asymmetric induction consisting of enantioface-selective radical addition and stereospecific radical substitution. We showcase the synthetic applications of the resulting enantioenriched bicyclic aziridines through a number of stereospecific transformations.
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Affiliation(s)
- Hao Xu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Duo-Sheng Wang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Zhenyu Zhu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Arghya Deb
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - X. Peter Zhang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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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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Zhai P, Fang Y, Li W, Lin J, Li X. Three-Component Synthesis of Di-Keto Aziridines and Highly Functionalized Alkenes from Sulfoxonium Ylides, Nitrosoarenes, and Alkynes. J Org Chem 2023; 88:12194-12207. [PMID: 37590322 DOI: 10.1021/acs.joc.3c00062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2023]
Abstract
A catalyst-free one-pot three-component method of sulfoxonium ylides, nitrosoarenes, and alkynes for the synthesis of highly functionalized di-keto aziridines and alkenes is described. This strategy features the catalyst-free and additive-free approach, the employment of safe, more stable, and readily accessible sulfoxonium ylides, which bear a much wider substrate scope as starting materials. In terms of terminal alkynes, a cascade reaction of nitrone formation/1,3-diploar cycloaddition/Baldwin rearrangement is involved to afford a wide variety of di-keto aziridines. However, highly functionalized alkenes could be obtained instead of di-keto aziridines through the same nitrone formation/1,3-diploar cycloaddition and another different rearrangement reaction when internal alkynes are employed as starting materials.
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Affiliation(s)
- Pingan Zhai
- College of Biomedical Engineering, Taiyuan University of Technology, 79 West Yingze Street, Taiyuan 030024, People's Republic of China
| | - Yongsheng Fang
- College of Biomedical Engineering, Taiyuan University of Technology, 79 West Yingze Street, Taiyuan 030024, People's Republic of China
| | - Wenhui Li
- College of Biomedical Engineering, Taiyuan University of Technology, 79 West Yingze Street, Taiyuan 030024, People's Republic of China
| | - Jianying Lin
- College of Biomedical Engineering, Taiyuan University of Technology, 79 West Yingze Street, Taiyuan 030024, People's Republic of China
| | - Xing Li
- College of Biomedical Engineering, Taiyuan University of Technology, 79 West Yingze Street, Taiyuan 030024, People's Republic of China
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8
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Klarek M, Siodła T, Ayad T, Virieux D, Rapp M. Access to 2-Fluorinated Aziridine-2-phosphonates from α, α-Halofluorinated β-Iminophosphonates-Spectroscopic and Theoretical Studies. Molecules 2023; 28:5579. [PMID: 37513451 PMCID: PMC10385471 DOI: 10.3390/molecules28145579] [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: 07/02/2023] [Revised: 07/16/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023] Open
Abstract
The efficient one-pot halofluorination of a β-enaminophosphonate/β-iminophosphonate tautomeric mixture resulting in α,α-halofluorinated β-iminophosphonates is reported. Subsequent imine reduction gave the corresponding β-aminophosphonates as a racemic mixture or with high diastereoselectivity. The proposed protocol is the first example of a synthesis of N-inactivated aziridines substituted by a fluorine and phosphonate moiety on the same carbon atom. Based on spectroscopic and theoretical studies, we determined the cis/trans geometry of the resulting fluorinated aziridine-2-phosphonate. Our procedure, involving the reduction of cis/trans-fluoroaziridine mixture 24, allows us to isolate chiral trans-aziridines 24 as well as cis-aziridines 27 that do not contain a fluorine atom. We also investigated the influence of the fluorine atom on the reactivity of aziridine through an acid-catalyzed regioselective ring-opening reaction. The results of DFT calculations, at the PCM/ωB97x-D/def2-TZVPD level of theory, are in good agreement with the experiments. The transition states of the SN2 intramolecular cyclization of vicinal haloamines have been modeled.
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Affiliation(s)
- Mateusz Klarek
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Tomasz Siodła
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Tahar Ayad
- Institut Charles Gerhardt, CNRS, Ecole Nationale Supérieure de Chimie de Montpellier, 8 Rue de l'Ecole Normale, 34296 Montpellier, France
| | - David Virieux
- Institut Charles Gerhardt, CNRS, Ecole Nationale Supérieure de Chimie de Montpellier, 8 Rue de l'Ecole Normale, 34296 Montpellier, France
| | - Magdalena Rapp
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
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9
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Debnath B, Sarkar T, Karjee P, Purkayastha SK, Guha AK, Punniyamurthy T. Palladium-Catalyzed Annulative Coupling of Spirovinylcyclopropyl Oxindoles with p-Quinone Methides. J Org Chem 2023. [PMID: 37437136 DOI: 10.1021/acs.joc.3c00173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Pd-catalyzed annulative coupling of spirovinylcyclopropyl oxindoles with p-quinone methides has been accomplished via cascade carbon-carbon bond formation to afford bis-spirooxindole scaffolds. The mild reaction conditions, diastereoselectivity, functional group diversity, post-synthetic transformations, and mechanistic studies using DFT calculations are the important practical features.
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Affiliation(s)
- Bijoy Debnath
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Tanumay Sarkar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Pallab Karjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | | | - Ankur K Guha
- Advanced Computational Chemistry Centre, Cotton University, Guwahati 781001, India
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10
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Zakharov TN, Sakharov PA, Novikov MS, Khlebnikov AF, Rostovskii NV. Triethylamine-Promoted Oxidative Cyclodimerization of 2 H-Azirine-2-carboxylates to Pyrimidine-4,6-dicarboxylates: Experimental and DFT Study. Molecules 2023; 28:molecules28114315. [PMID: 37298789 DOI: 10.3390/molecules28114315] [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: 05/04/2023] [Revised: 05/18/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023] Open
Abstract
An unprecedented oxidative cyclodimerization reaction of 2H-azirine-2-carboxylates to pyrimidine-4,6-dicarboxylates under heating with triethylamine in air is described. In this reaction, one azirine molecule undergoes formal cleavage across the C-C bond and another across the C=N bond. According to the experimental study and DFT calculations, the key steps of the reaction mechanism include nucleophilic addition of N,N-diethylhydroxylamine to an azirine to form an (aminooxy)aziridine, generation of an azomethine ylide, and its 1,3-dipolar cycloaddition to the second azirine molecule. The crucial condition for the synthesis of pyrimidines is generation of N,N-diethylhydroxylamine in the reaction mixture in a very low concentration, which is ensured by the slow oxidation of triethylamine with air oxygen. Addition of a radical initiator accelerated the reaction and resulted in higher yields of the pyrimidines. Under these conditions, the scope of the pyrimidine formation was elucidated, and a series of pyrimidines was synthesized.
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Affiliation(s)
- Timofei N Zakharov
- Institute of Chemistry, St. Petersburg State University, 7/9 Universitetskaya Nab., 199034 St. Petersburg, Russia
| | - Pavel A Sakharov
- Institute of Chemistry, St. Petersburg State University, 7/9 Universitetskaya Nab., 199034 St. Petersburg, Russia
| | - Mikhail S Novikov
- Institute of Chemistry, St. Petersburg State University, 7/9 Universitetskaya Nab., 199034 St. Petersburg, Russia
| | - Alexander F Khlebnikov
- Institute of Chemistry, St. Petersburg State University, 7/9 Universitetskaya Nab., 199034 St. Petersburg, Russia
| | - Nikolai V Rostovskii
- Institute of Chemistry, St. Petersburg State University, 7/9 Universitetskaya Nab., 199034 St. Petersburg, Russia
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11
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Xue W, Zhu Z, Chen S, You B, Tang C. Atomically Dispersed Co-N/C Catalyst for Divergent Synthesis of Nitrogen-Containing Compounds from Alkenes. J Am Chem Soc 2023; 145:4142-4149. [PMID: 36753512 DOI: 10.1021/jacs.2c12344] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Alkene functionalization with a single-atom catalyst (SAC) which merges homogeneous and heterogeneous catalysis is a fascinating route to obtain high-value-added molecules. However, C-N bond formation of alkene with SAC is still unexplored. Herein, a bimetal-organic framework-derived Co-N/C catalyst with an atomically dispersed cobalt center is reported to show good activity of chemoselective aziridination/oxyamination reactions from alkene and hydroxylamine, and late-stage functionalization of complex alkenes and diversified synthetic transformations of the aziridine product further expand the utility of this method. Moreover, this system proceeds without external oxidants and exhibits mild, atom-economic, and recyclable characters. Detailed spectroscopic characterizations and mechanistic studies revealed the structure of the catalytic center and possible intermediates involved in the mechanism cycle.
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Affiliation(s)
- Wenxuan Xue
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Zhiwei Zhu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Sanxia Chen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Bo You
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Conghui Tang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
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12
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Zhao ZY, Cui M, Irran E, Oestreich M. Copper-Catalyzed Highly Enantioselective Addition of a Silicon Nucleophile to 3-Substituted 2H-Azirines Using an Si-B Reagent. Angew Chem Int Ed Engl 2023; 62:e202215032. [PMID: 36507717 PMCID: PMC10108078 DOI: 10.1002/anie.202215032] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 12/12/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022]
Abstract
3-Substituted 2H-azirines can be considered strained cyclic ketimines, and highly enantioselective addition reactions of silicon nucleophiles to either acyclic or cyclic ketimines have been elusive so far. The present work closes this gap for those azirines by means of a copper-catalyzed silylation using a silyl boronic ester as a latent silicon nucleophile. The resulting C-silylated, unprotected (N-H) aziridines are obtained in high yields and with excellent enantioselectivities and can be further converted into valuable compounds with hardly any erosion of the enantiomeric excess.
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Affiliation(s)
- Zhi-Yuan Zhao
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Ming Cui
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Elisabeth Irran
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
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13
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Trocha A, Piotrowska DG, Głowacka IE. Synthesis of Enantiomerically Enriched Protected 2-Amino-, 2,3-Diamino- and 2-Amino-3-Hydroxypropylphosphonates. Molecules 2023; 28:1466. [PMID: 36771131 PMCID: PMC9921368 DOI: 10.3390/molecules28031466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/01/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023] Open
Abstract
Simple and efficient strategies for the syntheses of enantiomerically enriched functionalized diethyl 2-amino-, 2,3-diamino- and 2-amino-3-hydroxypropylphosphonates have been developed starting from, respectively, N-protected (aziridin-2-yl)methylphosphonates, employing a regioselective aziridine ring-opening reaction with corresponding nucleophiles. Diethyl (R)- and (S)-2-(N-Boc-amino)propylphosphonates were obtained via direct regiospecific hydrogenolysis of the respective enantiomer of (R)- and (S)-N-Boc-(aziridin-2-yl)methylphosphonates. N-Boc-protected (R)- and (S)-2,3-diaminopropylphosphonates were synthesized from (R)- and (S)-N-Bn-(aziridin-2-yl)methylphosphonates via a regiospecific ring-opening reaction with neat trimethylsilyl azide and subsequent reduction of (R)- and (S)-2-(N-Boc-amino)-3-azidopropylphosphonates using triphenylphosphine. On the other hand, treatment of the corresponding (R)- and (S)-N-Bn-(aziridin-2-yl)methylphosphonates with glacial acetic acid led regiospecifically to the formation of (R)- and (S)-2-(N-Bn-amino)-3-acetoxypropylphosphonates.
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Affiliation(s)
| | | | - Iwona E. Głowacka
- Bioorganic Chemistry Laboratory, Faculty of Pharmacy, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland
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14
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Jang YS, Kang KH, Yun S, Park CP. Continuous flow system for biphasic synthesis of
gem
‐dichloroaziridine derivatives. B KOREAN CHEM SOC 2023. [DOI: 10.1002/bkcs.12671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Yea Seul Jang
- Graduate School of Analytical Science and Technology (GRAST) Chungnam National University Daejeon Republic of Korea
| | - Kook Hee Kang
- Graduate School of Analytical Science and Technology (GRAST) Chungnam National University Daejeon Republic of Korea
| | - Seula Yun
- Graduate School of Analytical Science and Technology (GRAST) Chungnam National University Daejeon Republic of Korea
| | - Chan Pil Park
- Graduate School of Analytical Science and Technology (GRAST) Chungnam National University Daejeon Republic of Korea
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15
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Recent Developments in Stereoselective Reactions of Sulfonium Ylides. ORGANICS 2022. [DOI: 10.3390/org3030024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This review describes advances in the literature since the mid-1990s in the area of reactions of sulfonium ylide chemistry, with particular attention paid to stereoselective examples. Although the chemistry of sulfonium ylides was first popularized and applied in a substantial way in the 1960s, there has been sustained interest in the chemistry of sulfonium ylides since then. Many new ways of exploiting sulfonium ylides in productive stereoselective methodologies have emerged, often taking advantage of advances in organocatalysis and transition metal catalysis, to access stereodefined structurally complex motifs. The development of many different chiral sulfides over the last 20–30 years has also played a role in accelerating their study in a variety of reaction settings. In general, formal cycloaddition reactions ([2 + 1] and [4 + 1]) of sulfonium ylides follow a similar mechanistic pathway: initial addition of the nucleophilic ylide carbanion to an electrophile to form a zwitterionic betaine intermediate, followed by cyclization of the zwitterionic intermediate to afford the desired three-membered cyclic product (e.g., epoxide, cyclopropane, or aziridine), five-membered monocyclic (e.g., oxazolidinone), or fused bicyclic product (e.g., benzofuran, indoline).
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16
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Boquet V, Nasrallah A, Dana AL, Brunard E, Di Chenna PH, Duran FJ, Retailleau P, Darses B, Sircoglou M, Dauban P. Rhodium(II)-Catalyzed Enantioselective Intermolecular Aziridination of Alkenes. J Am Chem Soc 2022; 144:17156-17164. [PMID: 36094904 DOI: 10.1021/jacs.2c07337] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
C4-Symmetrical dirhodium(II) tetracarboxylates are highly efficient catalysts for the asymmetric intermolecular aziridination of substituted alkenes with sulfamates. The reaction proceeds with high levels of efficiency and chemoselectivity to afford aziridines with excellent yields of up to 95% and enantiomeric excesses of up to 99%. The scope of the alkene aziridination includes mono-, di-, and trisubstituted olefins as well as the late-stage functionalization of complex substrates. The reaction can be performed on a gram-scale with a catalyst loading of 0.1 mol %. Our DFT study led us to propose a two-spin-state mechanism, involving a triplet Rh-nitrene species as key intermediate to drive the stereocontrolled approach and activation of the substrate.
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Affiliation(s)
- Vincent Boquet
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Ali Nasrallah
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Alejandro L Dana
- CONICET-Universidad de Buenos Aires, UMYMFOR, Buenos Aires C1428EGA, Argentina.,Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
| | - Erwan Brunard
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Pablo H Di Chenna
- CONICET-Universidad de Buenos Aires, UMYMFOR, Buenos Aires C1428EGA, Argentina.,Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
| | - Fernando J Duran
- CONICET-Universidad de Buenos Aires, UMYMFOR, Buenos Aires C1428EGA, Argentina.,Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
| | - Pascal Retailleau
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198 Gif-sur-Yvette, France
| | | | - Marie Sircoglou
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, 91405 Orsay, France
| | - Philippe Dauban
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198 Gif-sur-Yvette, France
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17
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Liu H, Li Y, Yang Z, Ge Q, Wu Z, Zhang W. Pd‐Catalyzed Aerobic Intermolecular 1,2‐Diamination of Conjugated Dienes: Regio‐ and Chemoselective Synthesis of Piperazines and 2‐Piperazinones. Chemistry 2022; 28:e202201808. [DOI: 10.1002/chem.202201808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Huikang Liu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Yunyi Li
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Zehua Yang
- Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research Institute of Pharmacy & Pharmacology School of Pharmaceutical Science Hengyang Medical School University of South China Hengyang Hunan 421001 P. R. China
| | - Qianyi Ge
- Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research Institute of Pharmacy & Pharmacology School of Pharmaceutical Science Hengyang Medical School University of South China Hengyang Hunan 421001 P. R. China
| | - Zhengxing Wu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
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18
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Zhao Q, Yao QY, Zhang YJ, Xu T, Zhang J, Chen X. Selective Cyclopropanation/Aziridination of Olefins Catalyzed by Bis(pyrazolyl)borate Cu(I) Complexes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200790] [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)
- Qianyi Zhao
- Henan Normal University School of Chemistry and Chemical Engineering Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials Jianshe Road 453007 Xinxiang CHINA
| | - Qiu-Yue Yao
- Henan Normal University School of Chemistry and Chemical Engineering Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials CHINA
| | - Yan-Jiao Zhang
- Henan Normal University School of Chemistry and Chemical Engineering Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials CHINA
| | - Ting Xu
- Henan Normal University School of Chemistry and Chemical Engineering Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials CHINA
| | - Jie Zhang
- Henan Normal University School of Chemistry and Chemical Engineering Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials CHINA
| | - Xuenian Chen
- Henan Normal University School of Chemistry and Chemical Engineering Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials CHINA
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19
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Luo MJ, Xiao Q, Li JH. Electro-/photocatalytic alkene-derived radical cation chemistry: recent advances in synthetic applications. Chem Soc Rev 2022; 51:7206-7237. [PMID: 35880555 DOI: 10.1039/d2cs00013j] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Alkene-derived radical cations are versatile reactive intermediates and have been widely applied in the construction of complex functionalized molecules and cyclic systems for chemical synthesis. Therefore, the synthetic application of these alkene-derived radical cations represents a powerful and green tool that can be used to achieve the functionalization of alkenes partially because the necessity of stoichiometric external chemical oxidants and/or hazardous reaction conditions is eliminated. This review summarizes the recent advances in the synthetic applications of the electro-/photochemical alkene-derived radical cations, emphasizing the key single-electron oxidation steps of the alkenes, the scope and limitations of the substrates, and the related reaction mechanisms. Using electrocatalysis and/or photocatalysis, single electron transfer (SET) oxidation of the CC bonds in the alkenes occurs, generating the alkene-derived radical cations, which sequentially enables the functionalization of translocated radical cations to occur in two ways: the first involves direct reaction with a nucleophile/radical or two molecules of nucleophiles to realize hydrofunctionalization, difunctionalization and cyclization; and the second involves the transformation of the alkene-derived radical cations into carbon-centered radicals using a base followed by radical coupling or oxidative nucleophilic coupling.
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Affiliation(s)
- Mu-Jia Luo
- Key Laboratory of Organic Chemistry of Jiangxi Province, Jiangxi Science & Technology Normal University, Nanchang, 330013, China.
| | - Qiang Xiao
- Key Laboratory of Organic Chemistry of Jiangxi Province, Jiangxi Science & Technology Normal University, Nanchang, 330013, 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 Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 475004, China
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20
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Xing Q, Jiang D, Zhang J, Guan L, Li T, Zhao Y, Di M, Chen H, Che C, Zhu Z. Combining visible-light induction and copper catalysis for chemo-selective nitrene transfer for late-stage amination of natural products. Commun Chem 2022; 5:79. [PMID: 36697627 PMCID: PMC9814389 DOI: 10.1038/s42004-022-00692-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 06/22/2022] [Indexed: 01/28/2023] Open
Abstract
Nitrene transfer chemistry is an effective strategy for introducing C-N bonds, which are ubiquitous in pharmaceuticals, agrochemicals and diverse bioactive natural products. The development of chemical methodology that can functionalize unique sites within natural products through nitrene transfer remains a challenge in the field. Herein, we developed copper catalyzed chemoselective allylic C-H amination and catalyst-free visible-light induced aziridination of alkenes through nitrene transfer. In general, both reactions tolerate a wide range of functional groups and occur with predictable regioselectivity. Furthermore, combination of these two methods enable the intermolecular chemo-selective late-stage amination of biologically active natural products, leading to C-H amination or C=C aziridination products in a tunable way. A series of control experiments indicate two-step radical processes were involved in both reaction systems.
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Affiliation(s)
- Qi Xing
- BayRay Innovation Center, Shenzhen Bay Laboratory, Shenzhen, 518132, China.
| | - Ding Jiang
- BayRay Innovation Center, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Jiayin Zhang
- BayRay Innovation Center, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Liangyu Guan
- BayRay Innovation Center, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Ting Li
- BayRay Innovation Center, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Yi Zhao
- BayRay Innovation Center, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Man Di
- BayRay Innovation Center, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Huangcan Chen
- BayRay Innovation Center, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Chao Che
- BayRay Innovation Center, Shenzhen Bay Laboratory, Shenzhen, 518132, China.
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.
| | - Zhendong Zhu
- BayRay Innovation Center, Shenzhen Bay Laboratory, Shenzhen, 518132, China.
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21
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Feng Y, Huai M, Huang T, Gao M, Tao C. Transtion-metal-free access to 2-arylphenethylamines through aryldiazonium ion catalyzed ring-opening of aziridines with arenes. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Iwai K, Wada K, Hao F, Asahara H, Nishiwaki N. A Mechanistic Study for Aziridination of Nitroalkenes Mediated by N-Chlorosuccinimide. J Oleo Sci 2022; 71:897-903. [PMID: 35584955 DOI: 10.5650/jos.ess21406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Direct aziridination of a nitrostyrene is achieved upon treatment with an alkylamine and N-chlorosuccinimide. The reaction is initiated by the Michael addition of amine to nitroalkene. Subsequent N-chlorination and nucleophilic substitution at the nitrogen atom afford 1-alkyl-2-nitroaziridine diastereoselectively. This reaction mechanism was clarified by NMR studies.
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Affiliation(s)
- Kento Iwai
- School of Environmental Science and Engineering, Kochi University of Technology.,Research Center for Molecular Design, Kochi University of Technology
| | - Khimiya Wada
- School of Environmental Science and Engineering, Kochi University of Technology
| | - Feiyue Hao
- School of Environmental Science and Engineering, Kochi University of Technology.,School of Pharmaceutical and Material Engineering, Taizhou University
| | - Haruyasu Asahara
- School of Environmental Science and Engineering, Kochi University of Technology.,Research Center for Molecular Design, Kochi University of Technology.,Graduate School of Pharmaceutical Sciences, Osaka University
| | - Nagatoshi Nishiwaki
- School of Environmental Science and Engineering, Kochi University of Technology.,Research Center for Molecular Design, Kochi University of Technology
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23
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Pinarci AA, Daniecki N, TenHoeve TM, Dellosso B, Madiu R, Mejia L, Bektas SE, Moura-Letts G. Synthesis of N-tosylaziridines from substituted alkenes via zirconooxaziridine catalysis. Chem Commun (Camb) 2022; 58:4909-4912. [PMID: 35355045 DOI: 10.1039/d2cc00686c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report the zirconooxaziridine promoted aziridination of alkenes using chloramine T as the quantitative source of N. The reaction works with high yields, diastereoselectivities and stereospecificity for a wide variety of substituted alkenes. A potential mechanism involving the formation of a zirconooxaziridine complex as the active catalyst has been proposed and initial mechanistic data would indicate that a highly associative mechanism is the predominant pathway for this transformation.
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Affiliation(s)
- Ali A Pinarci
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Noah Daniecki
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Tyler M TenHoeve
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Brandon Dellosso
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Rufai Madiu
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Liliana Mejia
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Seda E Bektas
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Gustavo Moura-Letts
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
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24
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Xin J, Chen T, Tang P. Direct Trifluoromethylthiolation of Aziridines: Cation-Controlled Diverse Synthesis of Trifluoromethylthiolated Isothiocyanates and Amines. Org Lett 2022; 24:2035-2039. [PMID: 35261244 DOI: 10.1021/acs.orglett.2c00558] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The direct trifluoromethylthiolation of aziridines with AgSCF3 and iodides is reported. The β-trifluoromethylthiolated isothiocyanates and amines were selectively obtained by the changed cation of iodide. This strategy is tolerant to a wide range of functional groups with good yields and regioselectivities. In addition, the isothiocyanates can be used for further synthetic manipulation, which offered a convenient approach for SCF3-containing compounds.
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Affiliation(s)
- Jingrui Xin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Tengying Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.,Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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25
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Kumar P, Chikara A, Sen A, Shanmugam M. Aziridination of Olefins Mediated by a [CuI(L1)2]+ complex Via Nitrene Transfer Reaction. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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26
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Qiu M, Fu X, Fu P, Huang J. Construction of aziridine, azetidine, indole and quinoline-like heterocycles via Pd-mediated C-H activation/annulation strategies. Org Biomol Chem 2022; 20:1339-1359. [PMID: 35044404 DOI: 10.1039/d1ob02146j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
N-Heterocycles can be found in natural products and drug molecules and are indispensable components in the area of organic synthesis, medicinal chemistry and materials science. The construction of these N-containing heterocycles by traditional methods usually requires the preparation of reactive intermediates. In the past decades, with the rapid growth of transition metal catalysed coupling reactions, syntheses of heterocycles from precursors with inert chemical bonds have become a challenge. More recently, in the field of transition metal associated C-H direct functionalization, efficient methods have been developed for the syntheses of N-heterocyclic compounds such as aziridines, azetidines, indoles and quinolines under the click type of reaction mode. In this review, representative synthetic methodologies developed in the recent 10 years for the preparation of this small class of N-heterocycles via the Pd-catalysed C-H activation and C-N bond formation pathway are discussed. We hope this article will provide new insights from the strategies highlighted into future molecular design, synthesis and applications in medical and materials sciences.
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Affiliation(s)
- Mengyu Qiu
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China. .,Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, China.,Tianjin University and Health-Biotech United Group Joint Laboratory of Innovative Drug Development and Translational Medicine, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Xuegang Fu
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China. .,Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, China.,Tianjin University and Health-Biotech United Group Joint Laboratory of Innovative Drug Development and Translational Medicine, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Peng Fu
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China. .,Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, China.,Tianjin University and Health-Biotech United Group Joint Laboratory of Innovative Drug Development and Translational Medicine, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Jianhui Huang
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China. .,Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, China.,Tianjin University and Health-Biotech United Group Joint Laboratory of Innovative Drug Development and Translational Medicine, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
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27
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Borrego E, Pérez PJ, Caballero A. Make It Green: Copper‐Catalyzed Olefin Aziridination in Water with an Iminoiodonane. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100825] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Elena Borrego
- Laboratorio de Catálisis Homogénea Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de Química Universidad de Huelva Campus de El Carmen 21007 Huelva Spain
| | - Pedro J. Pérez
- Laboratorio de Catálisis Homogénea Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de Química Universidad de Huelva Campus de El Carmen 21007 Huelva Spain
| | - Ana Caballero
- Laboratorio de Catálisis Homogénea Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de Química Universidad de Huelva Campus de El Carmen 21007 Huelva Spain
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28
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Zeng D, Gu L, Zhang L, Li G, He Y. Synthesis of aziridines by electrochemical oxidative annulation of chalcones with primary amines. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153413] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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29
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Fu X, Zhang T, Wu J, Sun Y, Wu F. Nickel‐Catalyzed Aminofluoroalkylation of Alkenes: Access to Difluoroalkylated
N
‐Containing Heterocyclic Compounds. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101205] [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)
- Xiaoyi Fu
- Shanghai Engineering Research Center of Green Fluoropharmaceutical Technology Shanghai Institute of Technology 201418 Shanghai P. R. China
| | - Tianyu Zhang
- Shanghai Engineering Research Center of Green Fluoropharmaceutical Technology Shanghai Institute of Technology 201418 Shanghai P. R. China
| | - Jingjing Wu
- Shanghai Engineering Research Center of Green Fluoropharmaceutical Technology Shanghai Institute of Technology 201418 Shanghai P. R. China
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 200032 Shanghai P. R. China
| | - Yijie Sun
- Shanghai Engineering Research Center of Green Fluoropharmaceutical Technology Shanghai Institute of Technology 201418 Shanghai P. R. China
| | - Fanhong Wu
- Shanghai Engineering Research Center of Green Fluoropharmaceutical Technology Shanghai Institute of Technology 201418 Shanghai P. R. China
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30
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Senatore R, Malik M, Langer T, Holzer W, Pace V. Consecutive and Selective Double Methylene Insertion of Lithium Carbenoids to Isothiocyanates: A Direct Assembly of Four-Membered Sulfur-Containing Cycles. Angew Chem Int Ed Engl 2021; 60:24854-24858. [PMID: 34534400 PMCID: PMC9293044 DOI: 10.1002/anie.202110641] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Indexed: 12/15/2022]
Abstract
A formal CH2 -CH2 homologation conducted with C1 carbenoids on a carbon electrophile for the obtainment of a four-membered cycle is reported. The logic proposes the consecutive delivery of two single nucleophilic CH2 units to an isothiocyanate-as competent electrophilic partner-resulting in the assembling of a rare imino-thietane cluster. The single synthetic operation procedure documents genuine chemocontrol, as indicated by the tolerance to various reactive elements decorating the starting materials. Significantly, the double homologation protocol is accomplished directly on a carbon electrophile, thus not requiring the installation of heteroatom-centered manifolds (e.g. boron).
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Affiliation(s)
- Raffaele Senatore
- University of ViennaDepartment of Pharmaceutical SciencesAlthanstrasse, 14A-1090ViennaAustria
| | - Monika Malik
- University of ViennaDepartment of Pharmaceutical SciencesAlthanstrasse, 14A-1090ViennaAustria
| | - Thierry Langer
- University of ViennaDepartment of Pharmaceutical SciencesAlthanstrasse, 14A-1090ViennaAustria
| | - Wolfgang Holzer
- University of ViennaDepartment of Pharmaceutical SciencesAlthanstrasse, 14A-1090ViennaAustria
| | - Vittorio Pace
- University of ViennaDepartment of Pharmaceutical SciencesAlthanstrasse, 14A-1090ViennaAustria
- University of TurinDepartment of ChemistryVia P. Giuria 710125TurinItaly
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31
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Senatore R, Malik M, Langer T, Holzer W, Pace V. Consecutive and Selective Double Methylene Insertion of Lithium Carbenoids to Isothiocyanates: A Direct Assembly of Four‐Membered Sulfur‐Containing Cycles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110641] [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)
- Raffaele Senatore
- University of Vienna Department of Pharmaceutical Sciences Althanstrasse, 14 A-1090 Vienna Austria
| | - Monika Malik
- University of Vienna Department of Pharmaceutical Sciences Althanstrasse, 14 A-1090 Vienna Austria
| | - Thierry Langer
- University of Vienna Department of Pharmaceutical Sciences Althanstrasse, 14 A-1090 Vienna Austria
| | - Wolfgang Holzer
- University of Vienna Department of Pharmaceutical Sciences Althanstrasse, 14 A-1090 Vienna Austria
| | - Vittorio Pace
- University of Vienna Department of Pharmaceutical Sciences Althanstrasse, 14 A-1090 Vienna Austria
- University of Turin Department of Chemistry Via P. Giuria 7 10125 Turin Italy
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32
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Sert M, Işılar Ö, Yaglioglu AS, Bulut A. Gabriel-Cromwell aziridination of amino sugars; chiral ferrocenoyl-aziridinyl sugar synthesis and their biological evaluation. Carbohydr Res 2021; 509:108430. [PMID: 34488002 DOI: 10.1016/j.carres.2021.108430] [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: 04/01/2021] [Revised: 08/22/2021] [Accepted: 08/23/2021] [Indexed: 11/22/2022]
Abstract
N-sugar substituted chiral aziridines were synthesized via Gabriel-Cromwell reaction. Novel pure diastereomers of aziridine derivatives (4 diastereomers) were readily obtained in high yields and their structures were confirmed by means of 1H NMR, 13C NMR, FT-IR, Mass and optical rotations. This is, to the best of our knowledge, the unique example of N-sugar aziridine synthesis. Diastereomeric effects for prostate (PC3) and cervix (HeLa) cancers were screened and it has been observed that the epimers bearing the same sugars showed different results against PC3 and HeLa cancer cells. The novel sugar aziridines were investigated as promising prodrug candidates for prostate cancer (PC3) therapy. Moreover, the drug likeness calculations (Lipinski's rule, physicochemical properties, lipophilicity, solubility, pharmacokinetics and bioavailability radar) have indicated that the sugar aziridines can be good candidates as oral drugs.
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Affiliation(s)
- Mustafa Sert
- Department of Chemistry, Kırıkkale University, 71450, Yahşihan, Kırıkkale, Turkey
| | - Özer Işılar
- Department of Chemistry, Kırıkkale University, 71450, Yahşihan, Kırıkkale, Turkey
| | - Ayse Sahin Yaglioglu
- Department of Chemistry and Chemical Process Technology, Amasya University, 05186, Amasya, Turkey
| | - Adnan Bulut
- Department of Chemistry, Kırıkkale University, 71450, Yahşihan, Kırıkkale, Turkey.
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33
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Chandra D, Yadav AK, Singh V, Tiwari B, Jat JL. Fe(II)‐Catalyzed Synthesis of Unactivated Aziridines (N‐H/N‐Me) from Olefins Using
O
‐Arylsulfonyl Hydroxylamines. ChemistrySelect 2021. [DOI: 10.1002/slct.202102884] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dinesh Chandra
- Department of Chemistry School of Physical and Decision Sciences Babasaheb Bhimrao Ambedkar University (A Central University) Lucknow India
| | - Ajay K. Yadav
- Department of Chemistry School of Physical and Decision Sciences Babasaheb Bhimrao Ambedkar University (A Central University) Lucknow India
| | - Vikram Singh
- Division of Molecular Synthesis and Drug Discovery Centre of Biomedical Research SGPGIMS Campus Raebareli Road Lucknow 226014 India
| | - Bhoopendra Tiwari
- Division of Molecular Synthesis and Drug Discovery Centre of Biomedical Research SGPGIMS Campus Raebareli Road Lucknow 226014 India
| | - Jawahar L. Jat
- Department of Chemistry School of Physical and Decision Sciences Babasaheb Bhimrao Ambedkar University (A Central University) Lucknow India
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34
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Li R, Li B, Zhang H, Ju CW, Qin Y, Xue XS, Zhao D. A ring expansion strategy towards diverse azaheterocycles. Nat Chem 2021; 13:1006-1016. [PMID: 34282307 DOI: 10.1038/s41557-021-00746-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 06/01/2021] [Indexed: 02/08/2023]
Abstract
The development of innovative strategies for the synthesis of N-heterocyclic compounds is an important topic in organic synthesis. Ring expansion methods to form large N-heterocycles often involve the cycloaddition of strained aza rings with π bonds. However, in some cases such strategies suffer from some limitations owing to the difficulties in controlling the regioselectivity and the accessibility of specific π-bond synthons. Here, we report the development of a general ring expansion strategy that involves a formal cross-dimerization between three-membered aza heterocycles and three- and four-membered-ring ketones through synergistic bimetallic catalysis. These formal cross-dimerizations of two different strained rings are efficient and scalable, and provide a straightforward and broadly applicable means of assembling diverse N-heterocycles, such as 3-benzazepinones, dihydropyridinones and uracils, which are versatile units in numerous drugs and biologically active compounds. Preliminary mechanistic studies revealed that the C-C bond of strained ring ketones is first cleaved by the Pd0 species during the reaction.
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Affiliation(s)
- Ruirui Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Bo Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Hongpeng Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Cheng-Wei Ju
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Ying Qin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Xiao-Song Xue
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Dongbing Zhao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China.
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35
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Schäfer C, Cho H, Vlocskó B, Xie G, Török B. Recent Advances in the Green Synthesis of Heterocycles: From Building Blocks to Biologically Active Compounds. Curr Org Synth 2021; 19:426-462. [PMID: 34515007 DOI: 10.2174/1570179418666210910110205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/06/2021] [Accepted: 07/22/2021] [Indexed: 11/22/2022]
Abstract
Recent advances in the environmentally benign synthesis of common heterocycles are described. This account features three main parts; the preparation of non-aromatic heterocycles, one-ring aromatic heterocycles and their condensed analogs. Due to the great variety of and high interest in these compounds, this work focuses on providing representative examples of the preparation of the target compounds.
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Affiliation(s)
- Christian Schäfer
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd. Boston, MA 02125. United States
| | - Hyejin Cho
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd. Boston, MA 02125. United States
| | - Bernadett Vlocskó
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd. Boston, MA 02125. United States
| | - Guoshu Xie
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd. Boston, MA 02125. United States
| | - Béla Török
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd. Boston, MA 02125. United States
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36
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Costanzo M, Cortigiani M, Gillick‐Healy MW, Kelly BG, Monasterolo C, Adamo MFA. Organocatalytic Desymmetrization of Meso‐Aziridines Via Asymmetric Intramolecular Rearrangement. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Martina Costanzo
- Centre for Synthesis and Chemical Biology Department of Chemistry Royal College of Surgeons in Ireland 123 St. Stephen's Green Dublin 2 Ireland
| | - Mauro Cortigiani
- Centre for Synthesis and Chemical Biology Department of Chemistry Royal College of Surgeons in Ireland 123 St. Stephen's Green Dublin 2 Ireland
| | | | - Brian G. Kelly
- Kelada Pharmachem. Ltd A1.01, Science Centre South, Belfield Dublin 4 Ireland
| | - Claudio Monasterolo
- Centre for Synthesis and Chemical Biology School of Chemistry University College Dublin, Belfield Dublin 4 Ireland
| | - Mauro F. A. Adamo
- Centre for Synthesis and Chemical Biology Department of Chemistry Royal College of Surgeons in Ireland 123 St. Stephen's Green Dublin 2 Ireland
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37
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Ghosh A, Dey R, Banerjee P. Relieving the stress together: annulation of two different strained rings towards the formation of biologically significant heterocyclic scaffolds. Chem Commun (Camb) 2021; 57:5359-5373. [PMID: 33969833 DOI: 10.1039/d1cc00998b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Small carbo- and heterocycles have become versatile building blocks owing to their intrinsic ring strain and ease of synthesis. However, the traditional approaches of heterocycle synthesis involved the combination of one strained-carbocycle or heterocycle with one unsaturated molecule. On the contrary, there is an exciting possibility of combining two different strained rings to furnish varieties of heterocycles, where one of the strained rings can act as a valuable alternative to the unsaturated molecule. These strategies are also useful to access multi-functionalized rings. Despite these distinctive synthetic benefits, this chemistry has not drawn considerable attention of the community. In this minireview, we explicitly choose this topic to reveal the unexplored possibilities with these different strained rings. This minireview provides comprehensive details with the mechanistic rationale about the reactivity of these pairs of small rings when they are allowed to react together in the presence of different Lewis acids. Subsequently, it will also open a new avenue for heterocycle synthesis.
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Affiliation(s)
- Asit Ghosh
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
| | - Raghunath Dey
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
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38
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Sousa CEA, Alves MJ. Synthesis of novel sugar derived aziridines, as starting materials giving access to sugar amino acid derivatives. Amino Acids 2021; 53:1123-1134. [PMID: 34120241 DOI: 10.1007/s00726-021-03017-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 06/04/2021] [Indexed: 11/24/2022]
Abstract
D-Erythrosyl aziridines were obtained from D-erythrosyl triazoles either by photolysis or through diazirine intermediates. These were found to undergo rich, high yielding chemistry by reaction with protic acids (HCl, BiI3/H2O and trifluoroacetic acid) leading to two types of furanoid sugar α-amino acids, and polyhydroxylprolines. Based on experimental evidence, reaction mechanisms have been proposed for the syntheses.
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Affiliation(s)
- Cristina E A Sousa
- Department of Chemistry, University of Minho, Gualtar, 4710-057, Braga, Portugal
| | - Maria J Alves
- Department of Chemistry, University of Minho, Gualtar, 4710-057, Braga, Portugal.
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39
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Cao YX, Silalai P, Liu CF, Yu KY, Bao X, Zhao XH, Saeeng R, Fan CA. Hypervalent-Iodine(III)-Mediated Tandem Oxidative Dearomatization/Aziridination of Phenolic Amines: Synthesis of Functionalized Unactivated Aziridines. Chemistry 2021; 27:8473-8478. [PMID: 33844345 DOI: 10.1002/chem.202100762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Indexed: 11/11/2022]
Abstract
A new hypervalent-iodine(III)-mediated tandem reaction involving oxidative dearomatization and in situ aziridination of phenolic amines is described, providing a mild and effective method for the assembly of structurally interesting and synthetically useful aziridines. Importantly, the densely functionalized aziridines resulting from this unprecedented tandem reaction offer a platform for expeditious access to architecturally diverse aza-heterocycles through transformations initiated by selective ring-opening of aziridines.
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Affiliation(s)
- Ye-Xing Cao
- State Key Laboratory of Applied OrganicChemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou, 730000, P. R. China
| | - Patamawadee Silalai
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi, 20131, Thailand
| | - Chun-Fang Liu
- State Key Laboratory of Applied OrganicChemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou, 730000, P. R. China
| | - Ke-Yin Yu
- State Key Laboratory of Applied OrganicChemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou, 730000, P. R. China
| | - Xu Bao
- State Key Laboratory of Applied OrganicChemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou, 730000, P. R. China
| | - Xian-He Zhao
- State Key Laboratory of Applied OrganicChemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou, 730000, P. R. China
| | - Rungnapha Saeeng
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi, 20131, Thailand
| | - Chun-An Fan
- State Key Laboratory of Applied OrganicChemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou, 730000, P. R. China
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40
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Kalra A, Bagchi V, Paraskevopoulou P, Das P, Ai L, Sanakis Y, Raptopoulos G, Mohapatra S, Choudhury A, Sun Z, Cundari TR, Stavropoulos P. Is the Electrophilicity of the Metal Nitrene the Sole Predictor of Metal-Mediated Nitrene Transfer to Olefins? Secondary Contributing Factors as Revealed by a Library of High-Spin Co(II) Reagents. Organometallics 2021; 40:1974-1996. [PMID: 35095166 PMCID: PMC8797515 DOI: 10.1021/acs.organomet.1c00267] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Recent research has highlighted the key role played by the electron affinity of the active metal-nitrene/imido oxidant as the driving force in nitrene additions to olefins to afford valuable aziridines. The present work showcases a library of Co(II) reagents that, unlike the previously examined Mn(II) and Fe(II) analogues, demonstrate reactivity trends in olefin aziridinations that cannot be solely explained by the electron affinity criterion. A family of Co(II) catalysts (17 members) has been synthesized with the assistance of a trisphenylamido-amine scaffold decorated by various alkyl, aryl, and acyl groups attached to the equatorial amidos. Single-crystal X-ray diffraction analysis, cyclic voltammetry and EPR data reveal that the high-spin Co(II) sites (S = 3/2) feature a minimal [N3N] coordination and span a range of 1.4 V in redox potentials. Surprisingly, the Co(II)-mediated aziridination of styrene demonstrates reactivity patterns that deviate from those anticipated by the relevant electrophilicities of the putative metal nitrenes. The representative L4Co catalyst (-COCMe3 arm) is operating faster than the L8Co analogue (-COCF3 arm), in spite of diminished metal-nitrene electrophilicity. Mechanistic data (Hammett plots, KIE, stereocontrol studies) reveal that although both reagents follow a two-step reactivity path (turnover-limiting metal-nitrene addition to the C b atom of styrene, followed by product-determining ring-closure), the L4Co catalyst is associated with lower energy barriers in both steps. DFT calculations indicate that the putative [L4Co]NTs and [L8Co]NTs species are electronically distinct, inasmuch as the former exhibits a single-electron oxidized ligand arm. In addition, DFT calculations suggest that including London dispersion corrections for L4Co (due to the polarizability of the tert-Bu substituent) can provide significant stabilization of the turnover-limiting transition state. This study highlights how small ligand modifications can generate stereoelectronic variants that in certain cases are even capable of overriding the preponderance of the metal-nitrene electrophilicity as a driving force.
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Affiliation(s)
- Anshika Kalra
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Vivek Bagchi
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States; Institute of Nano Science and Technology, Mohali, Punjab 160062, India
| | - Patrina Paraskevopoulou
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Athens 15771, Greece
| | - Purak Das
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Lin Ai
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States; College of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Yiannis Sanakis
- Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems, NCSR "Demokritos", Athens 15310, Greece
| | - Grigorios Raptopoulos
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Athens 15771, Greece
| | - Sudip Mohapatra
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Amitava Choudhury
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Zhicheng Sun
- Department of Chemistry, Center for Advanced Scientific Computing and Modeling (CASCaM), University of North Texas, Denton, Texas 76203, United States
| | - Thomas R Cundari
- Department of Chemistry, Center for Advanced Scientific Computing and Modeling (CASCaM), University of North Texas, Denton, Texas 76203, United States
| | - Pericles Stavropoulos
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
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41
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Sarkar T, Talukdar K, Das BK, Shah TA, Debnath B, Punniyamurthy T. The transition-metal-catalyzed stereoselective ring-expansion of vinylaziridines and vinyloxiranes. Org Biomol Chem 2021; 19:3776-3790. [PMID: 33949586 DOI: 10.1039/d1ob00259g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The transition-metal-aided stereoselective construction of sp3-carbon-rich heterocyclic scaffolds using strained-ring systems has received considerable attention in recent years due to the prominent presence of these scaffolds in myriad natural products, bioactive molecules, and pharmaceutical components. In this area, the catalytic ring-enlargement of vinylaziridines and vinyloxiranes plays a predominant role when synthesizing high sp3-content biorelevant heterocyclic compounds. This article aims to portray recent advancements in the ring-expansion of vinylaziridines and vinyloxiranes for accessing densely functionalized stereoselective heterocycles that have been developed over the past five years, with an emphasis on the substrate scopes and mechanistic insights into the key methodologies, and it is arranged based on the transition metals used and the ring sizes of the heterocyclic scaffolds.
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Affiliation(s)
- Tanumay Sarkar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Kangkan Talukdar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Bijay Ketan Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Tariq A Shah
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India. and Government Srinagar Women's College, Zakura Srinagar 190006, India
| | - Bijoy Debnath
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
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42
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Li X, Zeng H, Lin L, Feng X. Catalytic Asymmetric Hydroacyloxylation/Ring-Opening Reaction of Ynamides, Acids, and Aziridines. Org Lett 2021; 23:2954-2958. [PMID: 33769054 DOI: 10.1021/acs.orglett.1c00631] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A highly enantioselective three-component reaction of ynamides with carboxylic acids and 2,2'-diester aziridines has been realized by using a chiral N,N'-dioxide/Ho(OTf)3 complex as a Lewis acid catalyst. The process includes the formation of an α-acyloxyenamide intermediate through the addition of carboxylic acids to ynamides and the following enantioselective nucleophilic addition to in-situ-generated azomethine ylides induced by the chiral catalyst. A range of amino acyloxyenamides are delivered in moderate to good yields with good ee values. In addition, a possible catalytic cycle with a transition model is proposed to elucidate the reaction mechanism.
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Affiliation(s)
- Xiangqiang Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hongkun Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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43
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Xu C, Yin G, Jia FC, Wu YD, Wu AX. Merging Annulation with Ring Deconstruction: Synthesis of ( E)-3-(2-Acyl-1 H-benzo[ d]imidazol-4-yl)acrylaldehyde Derivatives via I 2/FeCl 3-Promoted Dual C(sp 3)-H Amination/C-N Bond Cleavage. Org Lett 2021; 23:2559-2564. [PMID: 33739840 DOI: 10.1021/acs.orglett.1c00486] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An unprecedented I2/FeCl3-promoted cascade reaction of aryl methyl ketones with 8-aminoquinolines for the convenient synthesis of (E)-3-(2-acyl-1H-benzo[d]imidazol-4-yl)acrylaldehydes was developed by merging annulation with ring deconstruction. This novel strategy unlocked the new reactivity of 8-aminoquinolines and provided an attractive platform for the ring opening of unactivated N-heteroaromatic compounds. Preliminary mechanistic investigation suggested that dual C(sp3)-H amination/C-N bond cleavage were key reaction steps. Furthermore, late-stage modification of the obtained products successfully delivered pyrazole and isoxazole derivatives, increasing the practicability and application potential of this methodology in organic synthesis.
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Affiliation(s)
- Cheng Xu
- College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, P. R. China.,Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Guodong Yin
- College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, P. R. China
| | - Feng-Cheng Jia
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Yan-Dong Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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44
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Synthetic Applications of Aziridinium Ions. Molecules 2021; 26:molecules26061774. [PMID: 33809951 PMCID: PMC8004105 DOI: 10.3390/molecules26061774] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/16/2021] [Accepted: 03/17/2021] [Indexed: 11/30/2022] Open
Abstract
Nonactivated aziridine with an electron-donating group at the ring nitrogen should be activated to an aziridinium ion prior to being converted to cyclic and acyclic nitrogen-containing molecules. This review describes ways to generate aziridinium ions and their utilization for synthetic purposes. Specifically, the intra- and intermolecular formation of aziridinium ions with proper electrophiles are classified, and their regio- and stereoselective transformations with nucleophiles are described on the basis of recent developments.
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45
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Alkylative Aziridine Ring-Opening Reactions. Molecules 2021; 26:molecules26061703. [PMID: 33803771 PMCID: PMC8003214 DOI: 10.3390/molecules26061703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/15/2021] [Accepted: 03/15/2021] [Indexed: 11/16/2022] Open
Abstract
In this study, the highly strained three-membered aziridine ring was successfully activated as the aziridinium ion by alkylation of the ring nitrogen with a methyl, ethyl or allyl group, which was followed by ring opening with external nucleophiles such as acetate and azide. Such alkylative aziridine ring opening provides an easy route for the synthesis of various N-alkylated amine-containing molecules with concomitant introduction of an external nucleophile at either its α- or β-position.
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46
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Ošeka M, Laudadio G, van Leest NP, Dyga M, Bartolomeu ADA, Gooßen LJ, de Bruin B, de Oliveira KT, Noël T. Electrochemical Aziridination of Internal Alkenes with Primary Amines. Chem 2021. [DOI: 10.1016/j.chempr.2020.12.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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47
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48
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Dong P, Chen L, Yang Z, Dong S, Feng X. Asymmetric cycloisomerization/[3 + 2] cycloaddition for the synthesis of chiral spiroisobenzofuran-1,3′-pyrrolidine derivatives. Org Chem Front 2021. [DOI: 10.1039/d1qo01194d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
An asymmetric tandem cycloisomerization/[3 + 2] cycloaddition reaction of 2,2′-diester aziridine and 2-ethynyl benzyl alcohol with Au(i)/chiral N,N′-dioxide−Dy(iii) as a relay catalyst system was developed.
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Affiliation(s)
- Pei Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Long Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Zhendong Yang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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Zhang JH, Pan CL, Zhang HH, Xu PF, Luo YC. Sc(OTf) 3 catalyzed [3 + 2]-annulation reaction of donor–acceptor aziridines with methylene exo-glycals: synthesis of chiral carbohydrate-spiro-heterocycles. Org Chem Front 2021. [DOI: 10.1039/d1qo00228g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Sc(OTf)3 catalyzed [3 + 2]-annulation reaction between D–A N-tosyl aziridines and methylene exo-glycals was developed for the synthesis of carbohydrate-spiro-heterocycles.
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Affiliation(s)
- Jie-Hui Zhang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Cheng-Lin Pan
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Huan-Huan Zhang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Yong-Chun Luo
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
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Minakata S, Kiyokawa K, Nakamura S. Transition-Metal-Free Aziridination of Alkenes with Sulfamate Esters Using tert-Butyl Hypoiodite. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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