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Liang S, Jensen MP. [Fe(NCMe) 6](BF 4) 2 is a bifunctional catalyst for styrene aziridination by nitrene transfer and heterocycle expansion by subsequent dipolar insertion. J Inorg Biochem 2024; 256:112551. [PMID: 38678911 DOI: 10.1016/j.jinorgbio.2024.112551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 03/24/2024] [Accepted: 04/04/2024] [Indexed: 05/01/2024]
Abstract
The solvated iron(II) salt [Fe(NCMe)6](BF4)2 (Me = methyl) is shown to be a bifunctional catalyst with respect to aziridination of styrene. The salt serves as an active catalyst for nitrene transfer from PhINTs to styrene to form 2-phenyl-N-tosylaziridine (Ph = phenyl; Ts = tosyl, -S{O}2-p-C6H4Me). The iron(II) salt also acts as a Lewis acid in non-coordinating CH2Cl2 solution, to catalyze heterolytic CN bond cleavage of the aziridine and insertion of dipolarophiles. The 1,3-zwitterionic intermediate is presumably supported by interaction of the metal dication with the anion, and by resonance stabilization of the carbocation. Nucleophilic dipolarophiles then insert to give a five-membered heterocyclic ring. The result is a two-step cycloaddition, formally [2 + 1 + 2], that is typically regiospecific, but not stereospecific. This reaction mechanism was confirmed by conducting a series of one-step, [3 + 2] additions of unsaturated molecules into pre-formed 2-phenyl-N-tosylaziridine, also catalyzed by [Fe(NCMe)6](BF4)2. Relevant substrates include styrenes, carbonyl compounds and alkynes. These yield five-membered heterocylic rings, including pyrrolidines, oxazolidines and dihydropyrroles, respectively. The reaction scope appears limited only by the barrier to formation of the dipolar intermediate, and by the nucleophilicity of the captured dipolarophile. The bifunctionality of an inexpensive, earth-abundant and non-toxic catalyst suggests a general strategy for one-pot construction of heterocyclic rings, as demonstrated specifically for pyrrolidine ring formation.
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Affiliation(s)
- Shengwen Liang
- Department of Chemistry and Biochemistry, Ohio University, Athens, OH 45701, USA
| | - Michael P Jensen
- Department of Chemistry and Biochemistry, Ohio University, Athens, OH 45701, USA.
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2
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Claraz A, Djian A, Masson G. Electrochemical tandem trifluoromethylation of allylamines/formal (3 + 2)-cycloaddition for the rapid access to CF3-containing imidazolines and oxazolidines. Org Chem Front 2021. [DOI: 10.1039/d0qo01307b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A straightforward and environmentally friendly synthesis of CF3-containing imidazolines and oxazolidines has been developed through an electrochemical three-component reaction among allylamines, the Langlois reagent, and nitrile or carbonyl compounds.
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Affiliation(s)
- Aurélie Claraz
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
| | - Aurélie Djian
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
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3
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Aneeja T, Radhika S, Neetha M, Anilkumar G. An Overview of the One-pot Synthesis of Imidazolines. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999201001153735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
One-pot syntheses are a simple, efficient and easy methodology, which are widely
used for the synthesis of organic compounds. Imidazoline is a valuable heterocyclic moiety
used as a synthetic intermediate, chiral auxiliary, chiral catalyst and a ligand for asymmetric
catalysis. Imidazole is a fundamental unit of biomolecules that can be easily prepared from
imidazolines. The one-pot method is an impressive approach to synthesize organic compounds
as it minimizes the reaction time, separation procedures, and ecological impact. Many significant
one-pot methods such as N-bromosuccinimide mediated reaction, ring-opening of tetrahydrofuran,
triflic anhydrate mediated reaction, etc. were reported for imidazoline synthesis.
This review describes an overview of the one-pot synthesis of imidazolines and covers literature
up to 2020.
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Affiliation(s)
- Thaipparambil Aneeja
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Sankaran Radhika
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Mohan Neetha
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
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4
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Qiao S, Wilcox CB, Unruh DK, Jiang B, Li G. Asymmetric [3 + 2] Cycloaddition of Chiral N-Phosphonyl Imines with Methyl Isocyanoacetate for Accessing 2-Imidazolines with Switchable Stereoselectivity. J Org Chem 2017; 82:2992-2999. [DOI: 10.1021/acs.joc.6b03068] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Shuo Qiao
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Cody B. Wilcox
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Daniel K. Unruh
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Bo Jiang
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
- School
of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Guigen Li
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
- Institute
of Chemistry and BioMedical Sciences and School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing 210093, P. R. China
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5
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Chen JQ, Yu WL, Wei YL, Li TH, Xu PF. Photoredox-Induced Functionalization of Alkenes for the Synthesis of Substituted Imidazolines and Oxazolidines. J Org Chem 2016; 82:243-249. [DOI: 10.1021/acs.joc.6b02377] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jian-Qiang Chen
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Wan-Lei Yu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yun-Long Wei
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Teng-Hui Li
- The High School Attached to Northwest Normal University, Lanzhou, 730000, P. R. China
| | - Peng-Fei Xu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China
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6
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Hsueh N, Clarkson GJ, Shipman M. Functionalization of Alkenes through Telescoped Continuous Flow Aziridination Processes. Org Lett 2016; 18:4908-4911. [DOI: 10.1021/acs.orglett.6b02349] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nathanael Hsueh
- Department of Chemistry, University of Warwick, Gibbet Hill
Road, Coventry, CV4 7AL, U.K
| | - Guy J. Clarkson
- Department of Chemistry, University of Warwick, Gibbet Hill
Road, Coventry, CV4 7AL, U.K
| | - Michael Shipman
- Department of Chemistry, University of Warwick, Gibbet Hill
Road, Coventry, CV4 7AL, U.K
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7
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Tydlitát J, Bureš F, Růžičková Z. Phenylalanine-Derived Imidazolines Bearing Heteroaromatic Pendants: Synthesis, Characterization, and Application in the AsymmetricHenryReaction. Helv Chim Acta 2015. [DOI: 10.1002/hlca.201500128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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8
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Hong XW, Zhou YQ, Bai CB, Wang NX, Xing Y, Zhang W, Wang YJ, Lan XW, Xie Y, Li YH. Asymmetric Synthesis of 1,3-Oxazolidine Derivatives with Multi-Component Reaction and Research of Kinetic Resolution. Molecules 2015; 20:17208-20. [PMID: 26393558 PMCID: PMC6332461 DOI: 10.3390/molecules200917208] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 08/31/2015] [Accepted: 09/01/2015] [Indexed: 11/25/2022] Open
Abstract
An efficient multi-component reaction to synthesize multi-substituted 1,3-oxazolidine compounds of high optical purity was described. All the products were well-characterized and the absolute configuration of one chiral center was determined. The plausible mechanism was proposed and a kinetic resolution of epoxides process was confirmed.
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Affiliation(s)
- Xiao-Wei Hong
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
- College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China.
| | - Yu-Qiang Zhou
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
| | - Cui-Bing Bai
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
| | - Nai-Xing Wang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
| | - Yalan Xing
- Department of Chemistry, William Paterson University of New Jersey, 300 Pompton Road, Wayne, NJ 07470, USA.
| | - Wei Zhang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
| | - Yan-Jing Wang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
| | - Xing-Wang Lan
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
| | - Yu Xie
- College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China.
| | - Yi-He Li
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
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9
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Hsueh N, Clarkson GJ, Shipman M. Generation and Ring Opening of Aziridines in Telescoped Continuous Flow Processes. Org Lett 2015; 17:3632-5. [DOI: 10.1021/acs.orglett.5b01777] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nathanael Hsueh
- Department of Chemistry, University of Warwick, Gibbet Hill
Road, Coventry, CV4 7AL, U.K
| | - Guy J. Clarkson
- Department of Chemistry, University of Warwick, Gibbet Hill
Road, Coventry, CV4 7AL, U.K
| | - Michael Shipman
- Department of Chemistry, University of Warwick, Gibbet Hill
Road, Coventry, CV4 7AL, U.K
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10
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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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11
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Yoshiki M, Ishibashi R, Yamada Y, Hanamoto T. TiF4-mediated regioselective cycloaddition of 2-(trifluoromethyl)-N-tosylaziridine to nitriles. Org Lett 2014; 16:5509-11. [PMID: 25353320 DOI: 10.1021/ol502331a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the first [3 + 2] cycloaddition of 2-(trifluoromethyl)-N-tosylaziridine to nitriles using TiF4 as an effective Lewis acid under mild reaction conditions. The reaction proceeded smoothly and afforded the corresponding 4-(trifluoromethyl)-1,3-imidazolines in good yields and with excellent regioselectivity.
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Affiliation(s)
- Michiya Yoshiki
- Department of Chemistry and Applied Chemistry, Saga University , Honjyo-machi 1, Saga 840-8502, Japan
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12
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Cresswell AJ, Davies SG, Roberts PM, Thomson JE. Beyond the Balz-Schiemann reaction: the utility of tetrafluoroborates and boron trifluoride as nucleophilic fluoride sources. Chem Rev 2014; 115:566-611. [PMID: 25084541 DOI: 10.1021/cr5001805] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Alexander J Cresswell
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, United Kingdom
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13
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Craig RA, O'Connor NR, Goldberg AFG, Stoltz BM. Stereoselective Lewis acid mediated (3+2) cycloadditions of N-H- and N-sulfonylaziridines with heterocumulenes. Chemistry 2014; 20:4806-13. [PMID: 24604740 PMCID: PMC4104980 DOI: 10.1002/chem.201303699] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Indexed: 02/01/2023]
Abstract
Alkyl and aryl isothiocyanates and carbodiimides are effective substrates in (3+2) cycloadditions with N-sulfonyl-2-substituted aziridines and 2-phenylaziridine for the synthesis of iminothiazolidines and iminoimidazolidines. Additionally, the stereoselective (3+2) cycloaddition of N-H- and N-sulfonylaziridines with isothiocyanates can be accomplished, allowing for the synthesis of highly enantioenriched iminothiazolidines. Evidence for an intimate ion-pair mechanism is presented herein in the context of these chemo-, regio-, and diastereoselective transformations. The demonstrated ability to remove the sulfonyl group from the heterocyclic products displays the utility of these compounds for further derivatization and application.
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Affiliation(s)
- Robert A Craig
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E California Blvd, MC 101-20, Pasadena, CA 91125 (USA)
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14
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Li R, Jiang H, Liu WY, Gu PM, Li XQ. Preparation of imidazolines from aziridines and nitriles via TfOH promoted Ritter process. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2014.01.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Qu K, Fisk JS, Tepe JJ. Azomethine ylide mediated inversion of configuration of quaternary imidazoline carbon: converting trans- to its cis- imidazolines. Tetrahedron Lett 2011; 52:4840-4842. [PMID: 21857756 DOI: 10.1016/j.tetlet.2011.07.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
An efficient synthetic methodology of converting trans-4,5-diaryl-2-imidazolines to the corresponding cis-4,5-diaryl-2-imidazolines has been developed. This methodology features mild reaction conditions and a simple one-pot two-step procedure.
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Affiliation(s)
- Ke Qu
- Department of Chemistry, Michigan State University, East Lansing, MI 48824
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16
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Pazdera P, Simbera J, Dlouhy M. Convenient Synthesis of Substituted Aryl Cyanides and 1,1-Dicyanobenzyl Benzoate. ORG PREP PROCED INT 2011. [DOI: 10.1080/00304948.2011.582000] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Pavel Pazdera
- a Centre for Syntheses at Sustainable Conditions and their Management, Masaryk University, Faculty of Science, Department of Chemistry , Kotlarska 2, Brno, Czech Republic
| | - Jan Simbera
- a Centre for Syntheses at Sustainable Conditions and their Management, Masaryk University, Faculty of Science, Department of Chemistry , Kotlarska 2, Brno, Czech Republic
| | - Milan Dlouhy
- b Lucebni Zavody Draslovka Co. Kolin , Havlickova 605, Kolin, Czech Republic
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17
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Li X, Yang X, Chang H, Li Y, Ni B, Wei W. A New and Efficient Procedure for Bi(OTf)3-Promoted [3+2] Cycloaddition of N-Tosylaziridines to Yield Imidazolines. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100270] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Kuznetsov ML, Kukushkin VY, Pombeiro AJL. Comparative Theoretical Study of 1,3-Dipolar Cycloadditions of Allyl-Anion Type Dipoles to Free and Pt-Bound Nitriles. J Org Chem 2010; 75:1474-90. [DOI: 10.1021/jo902415d] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maxim L. Kuznetsov
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, TU Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Vadim Yu. Kukushkin
- Department of Chemistry, St. Petersburg State University, 198504 Stary Petergof, Russian Federation
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, TU Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
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Affiliation(s)
- Philippe Dauban
- Centre de Recherche de Gif-sur-Yvette, Institut de Chimie des Substances Naturelles, UPR 2301 CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France.
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21
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Liu H, Du DM. Recent Advances in the Synthesis of 2-Imidazolines and Their Applications in Homogeneous Catalysis. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200800797] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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23
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Gandhi S, Singh VK. Synthesis of Chiral Organocatalysts derived from Aziridines: Application in Asymmetric Aldol Reaction. J Org Chem 2008; 73:9411-6. [DOI: 10.1021/jo8019863] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shikha Gandhi
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Vinod K. Singh
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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Yadav JS, Subba Reddy BV, Pandurangam T, Subba Reddy UV. Heteropoly Acid as Efficient, Cost-effective, and Recyclable Solid Acid for the Rapid Synthesis of Substituted Imidazolines. CHEM LETT 2008. [DOI: 10.1246/cl.2008.824] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Agrawal D, Yadav VK. Silylmethyl-substituted cyclopropyl and other strained ring systems: cycloaddition with dipolarophiles. Chem Commun (Camb) 2008:6471-88. [DOI: 10.1039/b812285g] [Citation(s) in RCA: 110] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Sun X, Sun W, Fan R, Wu J. Gold(III) Chloride/Silver Triflate: A Highly Efficient Catalyst for Ring-Opening Reaction of Aziridines with Electron-Rich Arenes. Adv Synth Catal 2007. [DOI: 10.1002/adsc.200700101] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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27
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Ghorai MK, Ghosh K. Lewis acid mediated nucleophilic ring opening followed by cycloaddition of 2-aryl-N-tosylaziridines with carbonyl compounds: further support towards an SN2-type mechanism. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.03.042] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Three-membered ring systems (2004). ACTA ACUST UNITED AC 2007. [DOI: 10.1016/s0959-6380(07)80006-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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29
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Scandium(III) triflate–TMSCl promoted cyclization of aziridin-1-yl oximes to 5,6-dihydro-4H-[1,2,4]oxadiazines. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.10.096] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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30
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Zhu W, Cai G, Ma D. A formal [3+2] cycloaddition process with nonactivated aziridines to polysubstituted indolizidines. Org Lett 2006; 7:5545-8. [PMID: 16320987 DOI: 10.1021/ol0513692] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[chemical reaction: see text]. Heating a mixture of ethyl 7-iodo-2-heptynoate (or its analogues), 2-aryl aziridines, and K2CO3 in dry CH(3)CN delivers polysubstituted indolizidines. This reaction goes through an S(N)2/formal [3+2] cycloaddition process and represents the first synthetically useful example of the formal [3+2] cycloaddition process through a C-N bond cleavage of nonactivated aziridines.
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Affiliation(s)
- Wei Zhu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China
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31
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Saibabu Kotti SRS, Timmons C, Li G. Vicinal diamino functionalities as privileged structural elements in biologically active compounds and exploitation of their synthetic chemistry. Chem Biol Drug Des 2006; 67:101-14. [PMID: 16492158 DOI: 10.1111/j.1747-0285.2006.00347.x] [Citation(s) in RCA: 302] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The chemistry, synthetic routes and medicinal properties of vicinal diamines and imidazolines are discussed. Synthetic routes towards chemically and pharmaceutically important molecules containing vicinal diamine functionality are discussed in detail. This mini review article covers the new developments of diamine chemistry between 2000 and 2005.
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Affiliation(s)
- S R S Saibabu Kotti
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA
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Ghorai MK, Ghosh K, Das K. Copper(II) triflate promoted cycloaddition of α-alkyl or aryl substituted N-tosylaziridines with nitriles: a highly efficient synthesis of substituted imidazolines. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.05.059] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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33
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Wu J, Sun X, Xia HG. Sc(OTf)3-Catalyzed [3+2]-cycloaddition of aziridines with nitriles under solvent-free conditions. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.01.021] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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35
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Ghorai MK, Das K, Kumar A, Ghosh K. An efficient route to regioselective opening of N-tosylaziridines with zinc(II) halides. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.04.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Pandey G, Singh RP, Garg A, Singh VK. Synthesis of Mannich type products via a three-component coupling reaction. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.01.118] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Five-membered ring systems: with more than one N atom. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s0959-6380(05)80330-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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Timmons C, Chen D, Barney CE, Kirtane S, Li G. The combination of 2-NsNH2/NCS and MeCN as the nitrogen sources for the regio- and stereoselective formation of imidazolines from α,β-unsaturated ketones. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.10.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Prasad BAB, Bisai A, Singh VK. 2-Aryl-N-tosylazetidines as Formal 1,4-Dipoles for [4 + 2] Cycloaddition Reactions with Nitriles: An Easy Access to the Tetrahydropyrimidine Derivatives. Org Lett 2004; 6:4829-31. [PMID: 15606077 DOI: 10.1021/ol048161l] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] A new synthetic route to 2-aryl-N-tosyl azetidines has been developed starting from N-tosylarylaldimines in two steps in an overall yield of 63-70%. A formal [4 + 2] cycloaddition of these 2-aryl-N-tosylazetidines with nitriles in the presence of BF3.OEt2 has been described for the synthesis of substituted tetrahydropyrimidines. It is proposed that the reaction proceeds in Ritter fashion.
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Affiliation(s)
- B A Bhanu Prasad
- Department of Chemistry, Indian Institute of Technology, Kanpur, 208 016, India
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