1
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Huang Y, Zhu SY, He G, Chen G, Wang H. Synthesis of N-H Aziridines from Unactivated Olefins Using Hydroxylamine- O-Sulfonic Acids as Aminating Agent. J Org Chem 2024; 89:6263-6273. [PMID: 38652889 DOI: 10.1021/acs.joc.4c00253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Herein, we presented a practical methodology for the intermolecular aziridination of alkenes, using HOSA as the aminating agent, alongside pyridine or piperidine as the base, within HFIP solvent system. Notably, this approach showcases excellent reactivity, especially with nonactivated alkenes, and facilitates the transformation of various alkenes substrates, including mono-, di-, tri, and tetra-substituted alkenes, into aziridines with moderate to excellent yield. This method presents a promising avenue for synthesizing aziridines from a wide range of alkenes, featuring the benefits of straightforward operation, mild reaction conditions, extensive substrate compatibility, and scalability.
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Affiliation(s)
- Yi Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Shi-Yang Zhu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gang He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gong Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Hao Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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2
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Sharma K, McCorry A, Boobier S, Mottram J, Napier R, Ashworth IW, Blacker AJ, Kapur N, Warriner SL, Wright MH, Nguyen BN. Activation of fluoride anion as nucleophile in water with data-guided surfactant selection. Chem Sci 2024; 15:5764-5774. [PMID: 38638222 PMCID: PMC11023051 DOI: 10.1039/d3sc06311a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 02/27/2024] [Indexed: 04/20/2024] Open
Abstract
A principal component surfactant_map was developed for 91 commonly accessible surfactants for use in surfactant-enabled organic reactions in water, an important approach for sustainable chemical processes. This map was built using 22 experimental and theoretical descriptors relevant to the physicochemical nature of these surfactant-enabled reactions, and advanced principal component analysis algorithms. It is comprised of all classes of surfactants, i.e. cationic, anionic, zwitterionic and neutral surfactants, including designer surfactants. The value of this surfactant_map was demonstrated in activating simple inorganic fluoride salts as effective nucleophiles in water, with the right surfactant. This led to the rapid development (screening 13-15 surfactants) of two fluorination reactions for β-bromosulfides and sulfonyl chlorides in water. The latter was demonstrated in generating a sulfonyl fluoride with sufficient purity for direct use in labelling of chymotrypsin, under physiological conditions.
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Affiliation(s)
- Krishna Sharma
- School of Chemistry, University of Leeds Woodhouse Lane LS2 9JT UK
| | - Alison McCorry
- School of Chemistry, University of Leeds Woodhouse Lane LS2 9JT UK
| | - Samuel Boobier
- School of Chemistry, University of Leeds Woodhouse Lane LS2 9JT UK
| | - James Mottram
- School of Chemistry, University of Leeds Woodhouse Lane LS2 9JT UK
| | - Rachel Napier
- School of Chemistry, University of Leeds Woodhouse Lane LS2 9JT UK
| | - Ian W Ashworth
- Chemical Development, Pharmaceutical, Technology and Development Operations, AstraZeneca Macclesfield SK10 2NA UK
| | - A John Blacker
- School of Chemistry, University of Leeds Woodhouse Lane LS2 9JT UK
| | - Nikil Kapur
- School of Mechanical Engineering, University of Leeds Woodhouse Lane LS2 9JT UK
| | | | - Megan H Wright
- School of Chemistry, University of Leeds Woodhouse Lane LS2 9JT UK
| | - Bao N Nguyen
- School of Chemistry, University of Leeds Woodhouse Lane LS2 9JT UK
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3
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Tan H, Samanta S, Maity A, Roychowdhury P, Powers DC. N-Aminopyridinium reagents as traceless activating groups in the synthesis of N-Aryl aziridines. Nat Commun 2022; 13:3341. [PMID: 35689000 PMCID: PMC9187731 DOI: 10.1038/s41467-022-31032-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/30/2022] [Indexed: 12/11/2022] Open
Abstract
N-functionalized aziridines, which are both useful intermediates and important synthetic targets, can be envisioned as arising from the addition of nitrenes (i.e., NR fragments) to olefinic substrates. The exceptional reactivity of most nitrenes, in particular with respect to unimolecular decomposition, prevents general application of nitrene-transfer to the synthesis of N-functionalized aziridines. Here we demonstrate N-aryl aziridine synthesis via 1) olefin aziridination with N-aminopyridinium reagents to afford N-pyridinium aziridines followed by 2) Ni-catalyzed C-N cross-coupling of the N-pyridinium aziridines with aryl boronic acids. The N-pyridinium aziridine intermediates also participate in ring-opening chemistry with a variety of nucleophiles to afford 1,2-aminofunctionalization products. Mechanistic investigations indicate aziridine cross-coupling proceeds via a noncanonical mechanism involving initial aziridine opening promoted by the bromide counterion of the Ni catalyst, C-N cross-coupling, and finally aziridine reclosure. Together, these results provide new opportunities to achieve selective incorporation of generic aryl nitrene equivalents in organic molecules.
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Affiliation(s)
- Hao Tan
- Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA
| | - Samya Samanta
- Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA
| | - Asim Maity
- Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA
| | - Pritam Roychowdhury
- Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA
| | - David C Powers
- Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA.
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4
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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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5
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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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6
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Bresciani G, Bortoluzzi M, Pampaloni G, Marchetti F. Diethylammonium iodide as catalyst for the metal-free synthesis of 5-aryl-2-oxazolidinones from aziridines and carbon dioxide. Org Biomol Chem 2021; 19:4152-4161. [PMID: 33881440 DOI: 10.1039/d1ob00458a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The catalytic potential of ammonium halide salts was explored in the coupling reaction of a model aziridine with carbon dioxide, highlighting the superior activity of [NH2Et2]I. Then, working at room temperature, atmospheric CO2 pressure and in the absence of solvent, the [NH2Et2]I-catalyzed synthesis of a series of 5-aryl-2-oxazolidinones was accomplished in good to high yields and excellent selectivity, from 2-aryl-aziridines with N-methyl or N-ethyl groups. NMR studies and DFT calculations outlined the pivotal role of both the diethylammonium cation and the iodide anion. The proposed method represents a convenient choice for obtaining a limited number of valuable molecules for which more complex and more expensive catalytic systems have been reported even in recent years.
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Affiliation(s)
- Giulio Bresciani
- University of Pisa, Department of Chemistry and Industrial Chemistry, Via Moruzzi 13, I-56124 Pisa, Italy and CIRCC, via Celso Ulpiani 27, I-70126 Bari, Italy.
| | - Marco Bortoluzzi
- CIRCC, via Celso Ulpiani 27, I-70126 Bari, Italy. and University of Venezia "Ca' Foscari", Department of Molecular Science and Nanosystems, Via Torino 155, I-30170 Mestre (VE), Italy
| | - Guido Pampaloni
- University of Pisa, Department of Chemistry and Industrial Chemistry, Via Moruzzi 13, I-56124 Pisa, Italy and CIRCC, via Celso Ulpiani 27, I-70126 Bari, Italy.
| | - Fabio Marchetti
- University of Pisa, Department of Chemistry and Industrial Chemistry, Via Moruzzi 13, I-56124 Pisa, Italy and CIRCC, via Celso Ulpiani 27, I-70126 Bari, Italy.
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7
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Banerjee M, Panjikar PC, Bhutia ZT, Bhosle AA, Chatterjee A. Micellar nanoreactors for organic transformations with a focus on “dehydration” reactions in water: A decade update. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132142] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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8
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9
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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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10
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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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11
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Sabir S, Pandey CB, Yadav AK, Tiwari B, Jat JL. Direct N-H/N-Me Aziridination of Unactivated Olefins Using O-(Sulfonyl)hydroxylamines as Aminating Agents. J Org Chem 2018; 83:12255-12260. [DOI: 10.1021/acs.joc.8b01673] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shekh Sabir
- Department of Chemistry, Baba Saheb Bhim Rao Ambedkar University, Lucknow 226025, India
| | - Chandra Bhan Pandey
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow 226014, India
| | - Ajay K. Yadav
- Department of Chemistry, Baba Saheb Bhim Rao Ambedkar University, Lucknow 226025, India
| | - Bhoopendra Tiwari
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow 226014, India
| | - Jawahar L. Jat
- Department of Chemistry, Baba Saheb Bhim Rao Ambedkar University, Lucknow 226025, India
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12
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Kim SW, Um TW, Shin S. Metal-Free Iodine-Catalyzed Oxidation of Ynamides and Diaryl Acetylenes into 1,2-Diketo Compounds. J Org Chem 2018; 83:4703-4711. [DOI: 10.1021/acs.joc.8b00484] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Seung Woo Kim
- Department of Chemistry, Center for New Directions in Organic Synthesis (CNOS) and Research Institute for Natural Sciences, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Tae-Woong Um
- Department of Chemistry, Center for New Directions in Organic Synthesis (CNOS) and Research Institute for Natural Sciences, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Seunghoon Shin
- Department of Chemistry, Center for New Directions in Organic Synthesis (CNOS) and Research Institute for Natural Sciences, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
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13
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Yang ZY, Tian T, Du YF, Li SY, Chu CC, Chen LY, Li D, Liu JY, Wang B. Direct intramolecular amination of tryptophan esters to prepare pyrrolo[2,3-b]indoles. Chem Commun (Camb) 2017; 53:8050-8053. [PMID: 28671697 DOI: 10.1039/c7cc03983b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A metal-free iodine-catalyzed intramolecular amination has been developed for the practical synthesis of pyrrolo[2,3-b]indoles from readily available tryptophan esters. The transformation has been applied to a wide array of substrates and can be performed on gram scale under very mild conditions.
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Affiliation(s)
- Zhao-Ying Yang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, People's Republic of China.
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14
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Affiliation(s)
- Shekh Sabir
- Department of Applied Chemistry; BabaSaheb Bhimrao Ambedkar University (A Central University) Vidya Vihar; Raebareli Road Lucknow 226025 India
| | | | - Jawahar L. Jat
- Department of Applied Chemistry; BabaSaheb Bhimrao Ambedkar University (A Central University) Vidya Vihar; Raebareli Road Lucknow 226025 India
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15
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Shukla P, Mahata S, Sahu A, Singh M, Rai VK, Rai A. First graphene oxide promoted metal-free nitrene insertion into olefins in water: towards facile synthesis of activated aziridines. RSC Adv 2017. [DOI: 10.1039/c7ra09351a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile metal-free graphene oxide (GO)-catalyzed synthesis of tosylaziridines using PhINTs as the nitrene source is reported.
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Affiliation(s)
- Prashant Shukla
- School of Physical Sciences
- Jawaharlal Nehru University
- New Delhi
- India
| | - Suhasini Mahata
- Department of Chemistry
- School of Physical Sciences
- Guru Ghasidas Vishwavidyalaya
- Bilaspur (C.G.)-495009
- India
| | - Anjumala Sahu
- Department of Chemistry
- School of Physical Sciences
- Guru Ghasidas Vishwavidyalaya
- Bilaspur (C.G.)-495009
- India
| | - Manorama Singh
- Department of Chemistry
- School of Physical Sciences
- Guru Ghasidas Vishwavidyalaya
- Bilaspur (C.G.)-495009
- India
| | - Vijai K. Rai
- Department of Chemistry
- School of Physical Sciences
- Guru Ghasidas Vishwavidyalaya
- Bilaspur (C.G.)-495009
- India
| | - Ankita Rai
- School of Physical Sciences
- Jawaharlal Nehru University
- New Delhi
- India
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16
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Chen J, Yan WQ, Lam CM, Zeng CC, Hu LM, Little RD. Electrocatalytic Aziridination of Alkenes Mediated by n-Bu4NI: A Radical Pathway. Org Lett 2015; 17:986-9. [DOI: 10.1021/acs.orglett.5b00083] [Citation(s) in RCA: 125] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jie Chen
- College of Life Science & Bioengineering, Beijing University of Technology, Beijing 100124, China
| | - Wei-Qing Yan
- College of Life Science & Bioengineering, Beijing University of Technology, Beijing 100124, China
| | - Chiu Marco Lam
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Cheng-Chu Zeng
- College of Life Science & Bioengineering, Beijing University of Technology, Beijing 100124, China
| | - Li-Ming Hu
- College of Life Science & Bioengineering, Beijing University of Technology, Beijing 100124, China
| | - R. Daniel Little
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
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17
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Smith DT, Njardarson JT. Skalierbare rhodiumkatalysierte intermolekulare Aziridinierungen. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Smith DT, Njardarson JT. A scalable rhodium-catalyzed intermolecular aziridination reaction. Angew Chem Int Ed Engl 2014; 53:4278-80. [PMID: 24596144 DOI: 10.1002/anie.201400502] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Indexed: 11/06/2022]
Abstract
The amine has landed! By employing the rhodium catalyst [Rh2 (esp)2 ] in the presence of a readily available amine source (DPH), unactivated and styrene-type olefins can now be stereospecifally transformed, in high yields at room temperature, into valuable NH aziridine products. esp=α,α,α',α'-tetramethyl-1,3-benzenedipropionic acid.
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Affiliation(s)
- David T Smith
- Department of Chemistry and Biochemistry, University of Arizona, 1306. E. University Blvd., Tucson, AZ 85721 (USA) http://www.cbc.arizona.edu/njardarson/group/
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19
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Jat JL, Paudyal MP, Gao H, Xu QL, Yousufuddin M, Devarajan D, Ess DH, Kürti L, Falck JR. Direct stereospecific synthesis of unprotected N-H and N-Me aziridines from olefins. Science 2014; 343:61-5. [PMID: 24385626 PMCID: PMC4175444 DOI: 10.1126/science.1245727] [Citation(s) in RCA: 217] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Despite the prevalence of the N-H aziridine motif in bioactive natural products and the clear advantages of this unprotected parent structure over N-protected derivatives as a synthetic building block, no practical methods have emerged for direct synthesis of this compound class from unfunctionalized olefins. Here, we present a mild, versatile method for the direct stereospecific conversion of structurally diverse mono-, di-, tri-, and tetrasubstituted olefins to N-H aziridines using O-(2,4-dinitrophenyl)hydroxylamine (DPH) via homogeneous rhodium catalysis with no external oxidants. This method is operationally simple (i.e., one-pot), scalable, and fast at ambient temperature, furnishing N-H aziridines in good-to-excellent yields. Likewise, N-alkyl aziridines are prepared from N-alkylated DPH derivatives. Quantum-mechanical calculations suggest a plausible Rh-nitrene pathway.
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Affiliation(s)
- Jawahar L Jat
- Division of Chemistry, Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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20
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Affiliation(s)
- Yunus E. Türkmen
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Varinder K. Aggarwal
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
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21
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Meng X, Chen W, Zhang Y, Chen Y, Chen B. NBS-Mediated Aziridination between Styrenes and Amides under Transition Metal-Free Conditions. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1555] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xu Meng
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; State Key Laboratory of Applied Organic Chemistry Lanzhou University; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Wenlin Chen
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; State Key Laboratory of Applied Organic Chemistry Lanzhou University; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Yuanqing Zhang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; State Key Laboratory of Applied Organic Chemistry Lanzhou University; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Yongxin Chen
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; State Key Laboratory of Applied Organic Chemistry Lanzhou University; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Baohua Chen
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; State Key Laboratory of Applied Organic Chemistry Lanzhou University; Lanzhou University; Lanzhou 730000 People's Republic of China
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22
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Kiyokawa K, Kosaka T, Minakata S. Metal-Free Aziridination of Styrene Derivatives with Iminoiodinane Catalyzed by a Combination of Iodine and Ammonium Iodide. Org Lett 2013; 15:4858-61. [DOI: 10.1021/ol402276f] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Tomoki Kosaka
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
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23
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Abstract
Different reactivities and selectivities are observed in water compared with those in organic solvents. In this article, such three examples are described. While ammonia was known not to react in metal-catalyzed allylic amination, palladium-catalyzed allylic amination using aqueous ammonia proceeded to afford primary amines in high yields. Second, allylboronates reacted with aldehydes in aqueous media to afford α-addition adducts exclusively in high yields with high diastereo- and enantioselectivities using Zn(OH)2with ligands as catalysts. Finally, it was found that catalytic use of In(0) was effective for the reactions of allylboronates with ketones in water.
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24
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Nagano T, Jia Z, Li X, Yan M, Lu G, Chan ASC, Hayashi T. Redox Catalysis of Halide Ion for Formal Cross-dehydrogenative Coupling: Bromide Ion-catalyzed Direct Oxidative α-Acetoxylation of Ketones. CHEM LETT 2010. [DOI: 10.1246/cl.2010.929] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Facile synthesis of oxazolidinones catalyzed by n-Bu4NBr3/n-Bu4NBr directly from olefins, chloramine-T and carbon dioxide. CATAL COMMUN 2010. [DOI: 10.1016/j.catcom.2010.04.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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26
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Banks HD. Torquoselectivity Studies in the Generation of Azomethine Ylides from Substituted Aziridines. J Org Chem 2010; 75:2510-7. [DOI: 10.1021/jo902600y] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Harold D. Banks
- U.S. Army Edgewood Chemical Biological Center APG, Maryland 21010-5424
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27
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Firouzabadi H, Iranpoor N, Kazemi S, Ghaderi A, Garzan A. Highly Efficient Halogenation of Organic Compounds with Halides Catalyzed by Cerium(III) Chloride Heptahydrate Using Hydrogen Peroxide as the Terminal Oxidant in Water. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900124] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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28
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Nagano T, Kobayashi S. Palladium-catalyzed allylic amination using aqueous ammonia for the synthesis of primary amines. J Am Chem Soc 2009; 131:4200-1. [PMID: 19265379 DOI: 10.1021/ja900328x] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Palladium-catalyzed allylic amination using aqueous ammonia for the preparation of primary amines has been realized. It is noteworthy that the use of aqueous ammonia is essential and that ammonia gas did not react at all. The first catalytic asymmetric synthesis using aqueous ammonia as a nitrogen source has also been demonstrated.
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Affiliation(s)
- Takashi Nagano
- Department of Chemistry, School of Science, The University of Tokyo, The HFRE Division, ERATO, Japan Science Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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