1
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Singh B, Kashyap S, Singh S, Gupta S, Ghorai MK. Catalytic Aminium Radical-Cation Salt (Magic Blue)-Initiated S N2-Type Nucleophilic Ring-Opening Transformations of Aziridines. J Org Chem 2024; 89:2247-2263. [PMID: 38323416 DOI: 10.1021/acs.joc.3c02194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
A simple and atom economic protocol for the construction of C-X/C-C bonds via catalytic aminium radical-cation salt (Magic Blue)-initiated SN2-type nucleophilic ring-opening transformations of racemic and nonracemic aziridines with different hetero and carbon nucleophiles to afford various amino ethers, thioethers, and amines in up to 99% yield, and with perfect enantiospecificity for some substrates but reduced ee with others (for nonracemic aziridines), is developed. This aminium radical-cation salt-initiated, SN2-type nucleophilic ring-opening strategy, along with various cyclization protocols, is employed to synthesize various biologically significant compounds.
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Affiliation(s)
- Bharat Singh
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Suraj Kashyap
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Shishir Singh
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Sikha Gupta
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Manas K Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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2
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Singh B, Kumar M, Goswami G, Verma I, Ghorai MK. Ring-Opening Cyclization (ROC) of Aziridines with Propargyl Alcohols: Synthesis of 3,4-Dihydro-2 H-1,4-oxazines. J Org Chem 2023; 88:4504-4518. [PMID: 36972376 DOI: 10.1021/acs.joc.2c03093] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Activated aziridines react with propargyl alcohols in the presence of Zn(OTf)2 as the Lewis acid catalyst following an SN2-type ring-opening mechanism to furnish the corresponding amino ether derivatives. Those amino ethers further undergo intramolecular hydroamination via 6-exo-dig cyclization in the presence of Zn(OTf)2 as the catalyst and tetrabutylammonium triflate salt as an additive under one-pot two-step reaction conditions. However, for nonracemic examples, ring-opening and cyclization steps were conducted under two-pot conditions. The reaction works well without any additional solvents. The final 3,4-dihydro-2H-1,4-oxazine products were obtained with 13 to 84% yield and 78 to 98% enantiomeric excess (for nonracemic examples).
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Affiliation(s)
- Bharat Singh
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Manish Kumar
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Gaurav Goswami
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Indresh Verma
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Manas K Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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3
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Kan XM, Zhu J, Li PH, Wu ZC, Yang PJ. Cu(II)-catalyzed regioselective ring-opening of N-tosylazetidines with phenols. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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4
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Takeda Y, Toyoda K, Sameera WMC, Tohnai N, Minakata S. Palladium‐Catalyzed Regioselective and Stereospecific Ring‐Opening Suzuki‐Miyaura Arylative Cross‐Coupling of 2‐Arylazetidines with Arylboronic Acids. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100195] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Youhei Takeda
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1 Suita Osaka 5650871 Japan
| | - Kazuya Toyoda
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1 Suita Osaka 5650871 Japan
| | - W. M. C. Sameera
- Institute of Low Temperature Science Hokkaido University North 19 Kita-ku, Sapporo Hokkaido 0600819 Japan
| | - Norimitsu Tohnai
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1 Suita Osaka 5650871 Japan
| | - Satoshi Minakata
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1 Suita Osaka 5650871 Japan
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5
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Abstract
Multiheteroatom-containing small-sized cyclic molecules such as 2-
iminothiazolidines are often found to possess beneficial pharmacological properties. In this
review article, the biological significance of 2-iminothiazolidines is discussed and the literature
reports published in the last 15 years spanning from 2006 to 2020 describing various
preparative routes to access 2-iminothiazolidine derivatives have been categorically and
chronologically described. The notable synthetic methods discussed here involve ringexpansion
transformations of nonactivated and activated aziridines, thiiranes, epoxides, and
other miscellaneous reactions.
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Affiliation(s)
- Aditya Bhattacharyya
- Department of Chemistry, Indian Institute of Technology Kanpur, 208016, Kanpur, Uttar Pradesh, India
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6
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Xing S, Xia H, Wang C, Wang Y, Hao L, Wang K, Zhu B. A Stepwise Synthesis of Spiroindoline Compounds via Ring Opening of Aziridines and C−H Activation/Cyclization. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001235] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Siyang Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Hanyu Xia
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Chenyu Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Yuhan Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Lu Hao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Kui Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
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7
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Pradhan S, Chauhan N, Shahi CK, Bhattacharyya A, Ghorai MK. Stereoselective Synthesis of Hexahydroimidazo[1,2- a]quinolines via S N2-Type Ring-Opening Hydroarylation-Hydroamination Cascade Cyclization of Activated Aziridines with N-Propargylanilines. Org Lett 2020; 22:7903-7908. [PMID: 32985195 DOI: 10.1021/acs.orglett.0c02801] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A novel synthetic approach for the construction of 1,2,3,3a,4,5-hexahydroimidazo[1,2-a]quinolines in good yields (up to 75%) with excellent stereoselectivity (dr up to 94:6, ee up to >99%) under one-pot domino ring-opening cyclization (DROC) conditions has been developed. The DROC protocol proceeds through a Lewis acid catalyzed SN2-type ring-opening of activated aziridines with N-propargylanilines followed by intramolecular cyclization comprising concomitant hydroarylation and hydroamination steps in a domino fashion.
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Affiliation(s)
- Sajan Pradhan
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Navya Chauhan
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Chandan K Shahi
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Aditya Bhattacharyya
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Manas K Ghorai
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
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8
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Zhao H, Gao Q, Zhang Y, Zhang P, Xu S. Iridium-Catalyzed γ-Selective Hydroboration of γ-Substituted Allylic Amides. Org Lett 2020; 22:2861-2866. [PMID: 32202433 DOI: 10.1021/acs.orglett.0c00977] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Reported here for the first time is the Ir-catalyzed γ-selective hydroboration of γ-substituted allylic amides under mild reaction conditions. A variety of functional groups could be compatible with reaction conditions, affording γ-branched amides in good yields with ≤97% γ-selectivity. We have also demonstrated that the obtained borylated products could be used in a series of C-O, C-F, C-Br, and C-C bond-forming reactions.
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Affiliation(s)
- Hongliang Zhao
- Green Catalysis Center, College of Chemistry, Henan Advanced Institute of Technology, Zhengzhou University, Zhengzhou 450001, China.,State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Science, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China
| | - Qian Gao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Science, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China
| | - Yajuan Zhang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Science, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China
| | - Panke Zhang
- Green Catalysis Center, College of Chemistry, Henan Advanced Institute of Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Senmiao Xu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Science, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China.,Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China.,University of Chinese Academy of Sciences, Beijing 100049, China
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9
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Eshon J, Nicastri KA, Schmid SC, Raskopf WT, Guzei IA, Fernández I, Schomaker JM. Intermolecular [3+3] ring expansion of aziridines to dehydropiperi-dines through the intermediacy of aziridinium ylides. Nat Commun 2020; 11:1273. [PMID: 32152321 PMCID: PMC7062875 DOI: 10.1038/s41467-020-15134-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 02/21/2020] [Indexed: 01/07/2023] Open
Abstract
The importance of N-heterocycles in drugs has stimulated diverse methods for their efficient syntheses. Methods that introduce significant stereochemical complexity are attractive for identifying new bioactive amine chemical space. Here, we report a [3 + 3] ring expansion of bicyclic aziridines and rhodium-bound vinyl carbenes to form complex dehydropiperidines in a highly stereocontrolled rearrangement. Mechanistic studies and DFT computations indicate that the reaction proceeds through formation of a vinyl aziridinium ylide; this reactive intermediate undergoes a pseudo-[1,4]-sigmatropic rearrangement to directly furnish heterocyclic products with net retention at the new C-C bond. In combination with asymmetric silver-catalyzed aziridination, enantioenriched scaffolds with up to three contiguous stereocenters are rapidly delivered. The mild reaction conditions, functional group tolerance, and high stereospecificity of this method are well-suited for appending piperidine motifs to natural product and complex molecules. Ultimately, our work establishes the value of underutilized aziridinium ylides as key intermediates for converting small, strained rings to larger N-heterocycles.
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Affiliation(s)
- Josephine Eshon
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, WI, 53706, USA
| | - Kate A Nicastri
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, WI, 53706, USA
| | - Steven C Schmid
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, WI, 53706, USA
| | - William T Raskopf
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, WI, 53706, USA
| | - Ilia A Guzei
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, WI, 53706, USA
| | - Israel Fernández
- Departamento de Química Orgánica I and Centro de Innovación en Química Avazanda (ORFEO-CINQA), Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Jennifer M Schomaker
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, WI, 53706, USA.
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10
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Takeda Y, Shibuta K, Aoki S, Tohnai N, Minakata S. Catalyst-controlled regiodivergent ring-opening C(sp 3)-Si bond-forming reactions of 2-arylaziridines with silylborane enabled by synergistic palladium/copper dual catalysis. Chem Sci 2019; 10:8642-8647. [PMID: 31803438 PMCID: PMC6844297 DOI: 10.1039/c9sc02507c] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 07/30/2019] [Indexed: 01/23/2023] Open
Abstract
A Pd/Cu catalyst-controlled regiodivergent and stereospecific ring-opening C(sp3)–Si cross-coupling of 2-arylaziridines with silylborane has been developed and a new tandem reaction to give another regioisomer of silylamine has been discovered.
A catalyst-controlled regiodivergent and stereospecific ring-opening C(sp3)–Si cross-coupling of 2-arylaziridines with silylborane enabled by synergistic Pd/Cu dual catalysis has been developed. Just by selecting a suitable combination of catalysts, the regioselectivity of the coupling is completely switched to efficiently provide two regioisomers of β-silylamines (i.e., β-silyl-α-phenethylamines and β-silyl-β-phenethylamines) in good to high yields. Furthermore, a slight modification of the reaction conditions caused a drastic change in reaction pathways, leading to a tandem reaction to produce another regioisomer of silylamine (i.e., α-silyl-β-phenethylamines) in an efficient and selective manner.
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Affiliation(s)
- Youhei Takeda
- Department of Applied Chemistry , Graduate School of Engineering , Osaka University , Yamadaoka 2-1, Suita , Osaka 565-0871 , Japan . ;
| | - Kaoru Shibuta
- Department of Applied Chemistry , Graduate School of Engineering , Osaka University , Yamadaoka 2-1, Suita , Osaka 565-0871 , Japan . ;
| | - Shohei Aoki
- Department of Applied Chemistry , Graduate School of Engineering , Osaka University , Yamadaoka 2-1, Suita , Osaka 565-0871 , Japan . ;
| | - Norimitsu Tohnai
- Department of Material and Life Science , 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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11
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Toda Y, Matsuda R, Gomyou S, Suga H. Use of trichloroacetonitrile as a hydrogen chloride generator for ring-opening reactions of aziridines. Org Biomol Chem 2019; 17:3825-3829. [PMID: 30920569 DOI: 10.1039/c9ob00602h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Regioselective ring-opening reactions of 2-aryl-N-tosylaziridines are described, in which hydrogen chloride is generated by photodegradation of trichloroacetonitrile. HCl adducts are obtained in high yields in 1,4-dioxane, whereas methanol adducts are predominantly obtained in methanol. Trichloroacetonitrile can serve as a photoresponsive molecular storage generator for hydrogen chloride.
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Affiliation(s)
- Yasunori Toda
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
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12
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Park W, Kim Y, Park YS. Neutral Alcohol Nucleophiles for the Substitution of α-Bromo Aryl Acetates and Applications to Asymmetric Synthesis of Morpholine Derivatives. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900207] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wongi Park
- Department of Chemistry; Konkuk University; 120 Neungdong-ro, Gwangjin-gu 05029 Seoul Korea
| | - Yongtae Kim
- Department of Chemistry; Konkuk University; 120 Neungdong-ro, Gwangjin-gu 05029 Seoul Korea
| | - Yong Sun Park
- Department of Chemistry; Konkuk University; 120 Neungdong-ro, Gwangjin-gu 05029 Seoul Korea
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13
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Boddy AJ, Cordier CJ, Goldberg K, Madin A, Spivey AC, Bull JA. Acid-Mediated Ring Expansion of 2,2-Disubstituted Azetidine Carbamates to 6,6-Disubstituted 1,3-Oxazinan-2-ones. Org Lett 2019; 21:1818-1822. [PMID: 30829041 DOI: 10.1021/acs.orglett.9b00407] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The ring expansion of 2-ester-2-arylazetidine carbamates can be achieved using Brønsted acids to form 6,6-disubstituted 1,3-oxazinan-2-ones. The reaction is rapid at room temperature with Boc or Cbz derivatives and proceeds with excellent yield (up to 96%) and broad substrate scope. Derivatives of drug compounds and natural products are incorporated. The combination of this ring expansion in a three-step N-H insertion/cyclization/expansion sequence is applied to directly access medicinally relevant scaffolds from acyclic precursors.
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Affiliation(s)
- Alexander J Boddy
- Department of Chemistry , Imperial College London , Molecular Sciences Research Hub, White City Campus, Wood Lane , London W12 0BZ , U.K
| | - Christopher J Cordier
- Department of Chemistry , Imperial College London , Molecular Sciences Research Hub, White City Campus, Wood Lane , London W12 0BZ , U.K
| | - Kristin Goldberg
- Medicinal Chemistry, Oncology , IMED Biotech Unit , AstraZeneca , Cambridge CB4 0WG , U.K
| | - Andrew Madin
- Hit Discovery, Discovery Sciences, IMED Biotech Unit , AstraZeneca , Cambridge CB4 0WG , U.K
| | - Alan C Spivey
- Department of Chemistry , Imperial College London , Molecular Sciences Research Hub, White City Campus, Wood Lane , London W12 0BZ , U.K
| | - James A Bull
- Department of Chemistry , Imperial College London , Molecular Sciences Research Hub, White City Campus, Wood Lane , London W12 0BZ , U.K
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14
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Talukdar R. BF3·OEt2 catalyzed base-free regiospecific ring opening of N-activated azetidines with (E)-1-arylidene-2-arylhydrazines. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s13738-018-1489-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Xing S, Gu N, Wang X, Liu J, Xing C, Wang K, Zhu B. Substitution-Controlled Selective Formation of Hexahydrobenz[ e]isoindoles and 3-Benzazepines via In(OTf) 3-Catalyzed Tandem Annulations. Org Lett 2018; 20:5680-5683. [PMID: 30188133 DOI: 10.1021/acs.orglett.8b02406] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A dramatic N-substituent controlled tandem annulation of 2-(2-(2-bromoethyl)phenyl)-1-sulfonylaziridines with 1,3-dicarbonyl compounds has been developed. When the N-substituent was a 4-methylbenzenesulfonyl group (Ts), sequential ring opening of aziridines, nucleophilic substitution, and lactamization took place to provide a series of hexahydrobenz[ e]isoindole compounds in good yields with good diastereoselectivities. By contrast, 3-benzazepine compounds were afforded in good yields via ring opening of aziridines and nucleophilic substitution when the N-substituent was the 4-nitrobenzenesulfonyl group (Ns).
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Affiliation(s)
- Siyang Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Nan Gu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Xin Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Jingyi Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Chunyan Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Kui Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
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16
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Mal A, Wani IA, Goswami G, Ghorai MK. Synthesis of Nonracemic 1,4-Benzoxazines via Ring Opening/Cyclization of Activated Aziridines with 2-Halophenols: Formal Synthesis of Levofloxacin. J Org Chem 2018; 83:7907-7918. [PMID: 29863870 DOI: 10.1021/acs.joc.8b00788] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Novel 3,4-dihydro-1,4-benzoxazine derivatives have been synthesized by an efficient and simple method in excellent enantio- and diastereospecificity (ee > 99%, de > 99%). The reaction proceeds via Lewis acid-catalyzed SN2-type ring opening of activated aziridines with 2-halophenols followed by Cu(I)-catalyzed intramolecular C-N cyclization in a stepwise fashion under one-pot conditions to furnish the 3,4-dihydro-1,4-benzoxazine derivatives in excellent yields (up to 95%). The strategy offers a short and efficient synthesis to ( S)-3-methyl-1,4-benzoxazine ( S)-3v, a late stage intermediate in the synthesis of levofloxacin.
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Affiliation(s)
- Abhijit Mal
- Department of Chemistry , Indian Institute of Technology , Kanpur 208016 , India
| | - Imtiyaz Ahmad Wani
- Department of Chemistry , Indian Institute of Technology , Kanpur 208016 , India
| | - Gaurav Goswami
- Department of Chemistry , Indian Institute of Technology , Kanpur 208016 , India
| | - Manas K Ghorai
- Department of Chemistry , Indian Institute of Technology , Kanpur 208016 , India
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17
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Nguyen TN, May JA. Branched Amine Synthesis via Aziridine or Azetidine Opening with Organotrifluoroborates by Cooperative Brønsted/Lewis Acid Catalysis: An Acid-Dependent Divergent Mechanism. Org Lett 2018; 20:3618-3621. [PMID: 29874082 DOI: 10.1021/acs.orglett.8b01394] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A practical catalytic method to synthesize β,β- and γ,γ-substituted amines by opening aziridines and azetidines, respectively, using alkenyl, alkynyl, or aryl/heteroaryl trifluoroborate salts is described. This reaction features simple open-flask reaction conditions, the use of transition-metal-free catalysis, complete regioselectivity, and high diastereoselectivity. Preliminary mechanistic studies suggest that carbocation formation is disfavored. Stereoretentive addition is favored with Brønsted acid present, while stereoinversion is favored in its absence, indicating divergent mechanisms.
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Affiliation(s)
- Truong N Nguyen
- Department of Chemistry , University of Houston , 3585 Cullen Boulevard, Fleming Building Room 112 , Houston , Texas 77204-5003 , United States
| | - Jeremy A May
- Department of Chemistry , University of Houston , 3585 Cullen Boulevard, Fleming Building Room 112 , Houston , Texas 77204-5003 , United States
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18
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Bhattacharyya A, Shahi CK, Pradhan S, Ghorai MK. Stereospecific Synthesis of 1,4,5,6-Tetrahydropyrimidines via Domino Ring-Opening Cyclization of Activated Aziridines with α-Acidic Isocyanides. Org Lett 2018; 20:2925-2928. [DOI: 10.1021/acs.orglett.8b00986] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
| | | | - Sajan Pradhan
- Indian Institute of Technology Kanpur, 208016, Kanpur, Uttar Pradesh, India
| | - Manas K. Ghorai
- Indian Institute of Technology Kanpur, 208016, Kanpur, Uttar Pradesh, India
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19
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Yi R, Li X, Wan B. Ring-opening and cyclization of aziridines with aryl azides: metal-free synthesis of 6-(triflyloxy)quinolines. Org Chem Front 2018. [DOI: 10.1039/c8qo00984h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A metal-free synthesis of 6-(triflyloxy)quinolines has been developed via the ring-opening and cyclization of 2-aryl-1-tosylaziridines with 2-azidobenzaldehydes in the presence of TfOH.
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Affiliation(s)
- Ruxia Yi
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
- University of Chinese Academy of Sciences
| | - Xincheng Li
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Boshun Wan
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
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20
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Kumar Shahi C, Pradhan S, Bhattacharyya A, Kumar R, Ghorai MK. Accessing Quinoxalines by Ring-Opening/Cyclization/Detosylation/Aromatization of Activated Aziridines with 2-Bromoanilines: Synthesis of Tyrphostin AG 1296. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700506] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Chandan Kumar Shahi
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur Uttar Pradesh India
| | - Sajan Pradhan
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur Uttar Pradesh India
| | - Aditya Bhattacharyya
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur Uttar Pradesh India
| | - Raushan Kumar
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur Uttar Pradesh India
| | - Manas K. Ghorai
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur Uttar Pradesh India
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21
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Pradhan S, Shahi CK, Bhattacharyya A, Chauhan N, Ghorai MK. Divergent and Stereospecific Routes to Five to Eight-Membered 1,3- and 1,4-Di-Aza-Heterocycles via Ring-Opening Cyclization of Activated Aziridines with Aryl Amines. ChemistrySelect 2017. [DOI: 10.1002/slct.201602062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Sajan Pradhan
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
| | - Chandan Kumar Shahi
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
| | - Aditya Bhattacharyya
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
| | - Navya Chauhan
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
| | - Manas K. Ghorai
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
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22
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Mehra V, Lumb I, Anand A, Kumar V. Recent advances in synthetic facets of immensely reactive azetidines. RSC Adv 2017. [DOI: 10.1039/c7ra08884a] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Recent developments in synthetic strategies towards functionalized azetidines along with their versatility as heterocyclic synthons.
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Affiliation(s)
- Vishu Mehra
- Department of Chemistry
- Hindu College
- Amritsar-143005
- India
| | - Isha Lumb
- Department of Chemistry
- Baring Union Christian College
- Batala-143505
- India
| | - Amit Anand
- Department of Chemistry
- Khalsa College
- Amritsar-143005
- India
| | - Vipan Kumar
- Department of Chemistry
- Guru Nanak Dev University
- Amritsar-143005
- India
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23
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Zhang S, Shan C, Zhang S, Yuan L, Wang J, Tung CH, Xing LB, Xu Z. Breaking aziridines to construct morpholines with a gold(i)-catalyzed tandem ring-opening and cycloisomerization reaction. Org Biomol Chem 2016; 14:10973-10980. [PMID: 27824206 DOI: 10.1039/c6ob02284g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A convenient synthetic method for the construction of morpholine derivatives from easily available aziridines and propargyl alcohols has been successfully developed. A tandem nucleophilic ring-opening of aziridine/6-exo-dig cyclization/double bond isomerization sequence was achieved by using a single gold(i) catalyst under mild conditions. The gold(i) catalyst served as a π acid and also a σ acid to realize the dual activation of both reactants in this reaction. The obtained unsaturated morpholine products could be easily hydrogenated to achieve target morpholine derivatives with good diastereoselectivities in high yields.
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Affiliation(s)
- Shuyao Zhang
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
| | - Chuan Shan
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
| | - Shuai Zhang
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
| | - Luye Yuan
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
| | - Jianwu Wang
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
| | - Chen-Ho Tung
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
| | - Ling-Bao Xing
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
| | - Zhenghu Xu
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China. and State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, PR China
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24
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Mal A, Sayyad M, Wani IA, Ghorai MK. Domino Ring-Opening Cyclization of Activated Aziridines with Indoles: Synthesis of Chiral Hexahydropyrroloindoles. J Org Chem 2016; 82:4-11. [DOI: 10.1021/acs.joc.6b01731] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Abhijit Mal
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Masthanvali Sayyad
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Imtiyaz Ahmad Wani
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Manas K. Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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25
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Shahi CK, Bhattacharyya A, Nanaji Y, Ghorai MK. A Stereoselective Route to Tetrahydrobenzoxazepines and Tetrahydrobenzodiazepines via Ring-Opening and Aza-Michael Addition of Activated Aziridines with 2-Hydroxyphenyl and 2-Aminophenyl Acrylates. J Org Chem 2016; 82:37-47. [DOI: 10.1021/acs.joc.6b01919] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chandan Kumar Shahi
- Department
of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | | | - Yerramsetti Nanaji
- Department
of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Manas K. Ghorai
- Department
of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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26
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Xing S, Ren J, Wang K, Cui H, Xia T, Zhang M, Wang D. Facile, Efficient and Diastereoselective Construction of Indane-Fused Pyrrolidin-2-onesviaa Potassium Hydroxide-Catalyzed Domino Reaction. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600611] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Siyang Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry; Tianjin Normal University; Tianjin 300387 People's Republic of China
| | - Jing Ren
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry; Tianjin Normal University; Tianjin 300387 People's Republic of China
| | - Kui Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry; Tianjin Normal University; Tianjin 300387 People's Republic of China
| | - Hong Cui
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry; Tianjin Normal University; Tianjin 300387 People's Republic of China
| | - Tian Xia
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry; Tianjin Normal University; Tianjin 300387 People's Republic of China
| | - Ming Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry; Tianjin Normal University; Tianjin 300387 People's Republic of China
| | - Dandan Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry; Tianjin Normal University; Tianjin 300387 People's Republic of China
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27
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Bhattacharyya A, Kavitha CV, Ghorai MK. Stereospecific Synthesis of 2-Iminothiazolidines via Domino Ring-Opening Cyclization of Activated Aziridines with Aryl- and Alkyl Isothiocyanates. J Org Chem 2016; 81:6433-43. [PMID: 27425856 DOI: 10.1021/acs.joc.6b01551] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lewis acid catalyzed domino ring-opening cyclization of activated aziridines with aryl and alkyl isothiocyanates has been accomplished leading to the formation of a wide variety of highly substituted and functionalized 2-iminothiazolidines with excellent diastereo- and enantiospecificity (de, ee up to >99%). The reaction proceeds via a Lewis acid catalyzed SN2-type ring-opening of the activated aziridine followed by a concomitant 5-exo-dig cyclization in a domino fashion to furnish the 2-iminothiazolidine derivative in excellent yields (up to 99%).
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Affiliation(s)
| | - C V Kavitha
- Department of Chemistry, Government College for Women , Mandya 571401, Karnataka India
| | - Manas K Ghorai
- Department of Chemistry, Indian Institute of Technology , Kanpur 208016, India
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28
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Sayyad M, Mal A, Wani IA, Ghorai MK. A Synthetic Route to Chiral Tetrahydropyrroloindoles via Ring Opening of Activated Aziridines with 2-Bromoindoles Followed by Copper-Catalyzed C–N Cyclization. J Org Chem 2016; 81:6424-32. [DOI: 10.1021/acs.joc.6b01049] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masthanvali Sayyad
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Abhijit Mal
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Imtiyaz Ahmad Wani
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Manas K. Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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29
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Lugiņina J, Uzuleņa J, Posevins D, Turks M. Ring-Opening of Carbamate-Protected Aziridines and Azetidines in Liquid Sulfur Dioxide. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600141] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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30
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Zhou X, Xu X, Li Y, Zhang Z, Zheng ZB. Synthesis of chiral 4,5-dihydrothiazol-2-amines and 4,5-dihydrooxazol-2-amines through an unexpected ring opening reaction of azetidines. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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31
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Xing S, Ren J, Wang K, Cui H, Yan H, Li W. Diastereoselective Synthesis of Substituted Tetrahydroisoquinolines and Isoindolinesviaa Silver(I) Triflate-Promoted Tandem Reaction. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500903] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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32
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Sayyad M, Nanaji Y, Ghorai MK. A Synthetic Route to 2-Alkyl Indoles via Thiophenol-Mediated Ring-Opening of N-Tosylaziridines Followed by Copper Powder-Mediated C–N Cyclization/Aromatization. J Org Chem 2015; 80:12659-67. [DOI: 10.1021/acs.joc.5b02251] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Masthanvali Sayyad
- Department
of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Yerramsetti Nanaji
- Department
of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Manas K. Ghorai
- Department
of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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33
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Huang YM, Zheng CW, Pan L, Jin QW, Zhao G. Palladium(II)-Catalyzed Formal [3 + 2] Cycloaddition of Aziridines with 3-Substituted Indoles: Synthesis of Enantioenriched Pyrroloindolines. J Org Chem 2015; 80:10710-8. [DOI: 10.1021/acs.joc.5b01931] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- You-ming Huang
- Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Chang-wu Zheng
- Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Lu Pan
- Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Qiao-wen Jin
- Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Gang Zhao
- Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
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34
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Xing S, Ren J, Wang K, Cui H, Li W, Yan H. Lewis acid promoted three-component reactions of aziridines, arenes and aldehydes: an efficient and diastereoselective synthesis of cis-1,4-disubstituted tetrahydroisoquinolines. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.06.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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35
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Ghorai MK, Shahi CK, Bhattacharyya A, Sayyad M, Mal A, Wani IA, Chauhan N. Syntheses of Tetrahydrobenzodiazepines via SN2-Type Ring-Opening of Activated Aziridines with 2-Bromobenzylamine Followed by Copper-Powder-Mediated C−N Bond Formation. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500224] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Manas K. Ghorai
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
| | - Chandan Kumar Shahi
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
| | - Aditya Bhattacharyya
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
| | - Masthanvali Sayyad
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
| | - Abhijit Mal
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
| | - Imtiyaz Ahmad Wani
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
| | - Navya Chauhan
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
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36
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Ghorai MK, Sayyad M, Nanaji Y, Jana S. A Synthetic Route to Chiral Dihydrobenzothiazines through Ring Opening of Activated Aziridines with 2-Halothiophenols/Copper-Powder-Mediated C−N Cyclization. Chem Asian J 2015; 10:1480-9. [DOI: 10.1002/asia.201500153] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Indexed: 12/20/2022]
Affiliation(s)
- Manas K. Ghorai
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016 India
| | - Masthanvali Sayyad
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016 India
| | - Yerramsetti Nanaji
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016 India
| | - Sourita Jana
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016 India
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37
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Zhang HZ, Jeyakkumar P, Vijaya Kumar K, Zhou CH. Synthesis of novel sulfonamide azoles via C–N cleavage of sulfonamides by azole ring and relational antimicrobial study. NEW J CHEM 2015. [DOI: 10.1039/c4nj01932f] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel sulfonamide azoles were synthesizedviathe C–N cleavage of sulfonamides by an azole ring, and evaluated for their relational antimicrobial behaviors.
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Affiliation(s)
- Hui-Zhen Zhang
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- Institute of Bioorganic & Medicinal Chemistry
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Ponmani Jeyakkumar
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- Institute of Bioorganic & Medicinal Chemistry
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Kannekanti Vijaya Kumar
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- Institute of Bioorganic & Medicinal Chemistry
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Cheng-He Zhou
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- Institute of Bioorganic & Medicinal Chemistry
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
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38
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Ring Expansions of Activated Aziridines and Azetidines. TOPICS IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1007/7081_2015_159] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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39
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Yang HT, Xing ML, Lu XW, Li JX, Cheng J, Sun XQ, Miao CB. BF3·Et2O- or DMAP-Catalyzed Double Nucleophilic Substitution Reaction of Aziridinofullerenes with Sulfamides or Amidines. J Org Chem 2014; 79:11744-9. [DOI: 10.1021/jo5020596] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Hai-Tao Yang
- School
of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Meng-Lei Xing
- School
of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Xin-Wei Lu
- School
of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jia-Xing Li
- Key
Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, China
| | - Jiang Cheng
- School
of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Xiao-Qiang Sun
- School
of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Chun-Bao Miao
- School
of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
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40
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Soeta T, Miyamoto Y, Fujinami S, Ukaji Y. The Lewis acid-catalyzed [3+1+1] cycloaddition of azomethine ylides with isocyanides. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.118] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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41
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Bailey SJ, Wales SM, Willis AC, Keller PA. Ring-Opening and -Expansion of 2,2′-Biaziridine: Access to Diverse Enantiopure Linear and Bicyclic Vicinal Diamines. Org Lett 2014; 16:4344-7. [DOI: 10.1021/ol502164b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Stephen J. Bailey
- School
of Chemistry, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Steven M. Wales
- School
of Chemistry, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Anthony C. Willis
- Research
School of Chemistry, The Australian National University, Canberra, ACT 0200, Australia
| | - Paul A. Keller
- School
of Chemistry, University of Wollongong, Wollongong, NSW 2522, Australia
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42
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Sun H, Yang C, Lin R, Xia W. Regioselective Ring-Opening Nucleophilic Addition of Aziridines through Photoredox Catalyst. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400476] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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43
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Ghorai MK, Sahoo AK, Bhattacharyya A. Syntheses of Imidazo-, Oxa-, and Thiazepine Ring Systems via Ring-Opening of Aziridines/Cu-Catalyzed C–N/C–C Bond Formation. J Org Chem 2014; 79:6468-79. [DOI: 10.1021/jo500888j] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Manas K. Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur, Uttar Pradesh 208016, India
| | - Ashis Kumar Sahoo
- Department of Chemistry, Indian Institute of Technology, Kanpur, Uttar Pradesh 208016, India
| | - Aditya Bhattacharyya
- Department of Chemistry, Indian Institute of Technology, Kanpur, Uttar Pradesh 208016, India
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44
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Periyaraja S, Shanmugam P, Mandal AB. A Copper-Catalyzed One-Pot, Three-Component Diastereoselective Synthesis of 3-Spiroazetidinimine-2-oxindoles and Their Synthetic Transformation into Fluorescent Conjugated Indolones. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301244] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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45
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Li Y, Lin Z. Theoretical Studies of Ring-Opening Reactions of Phenylcyclobutabenzenol and Its Reactions with Alkynes Catalyzed by Rhodium Complexes. J Org Chem 2013; 78:11357-65. [DOI: 10.1021/jo4019123] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yang Li
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water
Bay, Kowloon, Hong Kong, People’s Republic of China
| | - Zhenyang Lin
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water
Bay, Kowloon, Hong Kong, People’s Republic of China
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46
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Ghorai MK, Tiwari DP, Jain N. Lewis Acid Catalyzed SN2-Type Ring Opening of N-Activated Aziridines with Electron-Rich Arenes/Heteroarenes. J Org Chem 2013; 78:7121-30. [DOI: 10.1021/jo401028j] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Manas K. Ghorai
- Department
of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Deo Prakash Tiwari
- Department
of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Nikita Jain
- Department
of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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47
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Pal’chikov VA. Morpholines. Synthesis and biological activity. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2013. [DOI: 10.1134/s1070428013060018] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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48
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Wang S, Chai Z, Zhou S, Wang S, Zhu X, Wei Y. A novel Lewis acid catalyzed [3 + 3]-annulation strategy for the syntheses of tetrahydro-β-carbolines and tetrahydroisoquinolines. Org Lett 2013; 15:2628-31. [PMID: 23662783 DOI: 10.1021/ol4008525] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel Lewis acid catalyzed [3 + 3]-annulation process for the efficient syntheses of both tetrahydro-β-carbolines and tetrahydroisoquinolines from readily available benzylic alcohols and aziridines was developed, which would be a highly valuable complement to the widely used Pictet-Spengler reaction. A probable mechanism was proposed based on the isolation and characterization of two key intermediates. This strategy enables facile access to important alkaloid frameworks not easily available with other known methods.
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Affiliation(s)
- Shaoyin Wang
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Institute of Organic Chemistry, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, PR China
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49
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Ghorai MK, Nanaji Y. Synthetic route to chiral indolines via ring-opening/C-N cyclization of activated 2-haloarylaziridines. J Org Chem 2013; 78:3867-78. [PMID: 23548056 DOI: 10.1021/jo400287a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A practical approach for the synthesis of 3-substituted indolines via regio- and stereoselective SN2-type ring-opening of 2-(2-halophenyl)-N-tosylaziridines with heteroatomic nucleophiles (O, N, and S) followed by palladium-catalyzed intramolecular C-N cyclization is reported in excellent yields (up to >99%) and enantiomeric excess (ee 99%).
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Affiliation(s)
- Manas K Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India.
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50
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Ghorai MK, Tiwari DP. Enantioselective Synthesis of 4,5-Dihydropyrroles via Domino Ring-Opening Cyclization (DROC) ofN-Activated Aziridines with Malononitrile. J Org Chem 2013; 78:2617-25. [DOI: 10.1021/jo302815m] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Manas K. Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Deo Prakash Tiwari
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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