1
|
Astakhova VV, Moskalik MY, Shainyan BA. Oxidative sulfamidation and further heterocyclization of trivinyl and tetravinylsilanes. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
2
|
Engl S, Reiser O. Catalyst-Free Visible-Light-Mediated Iodoamination of Olefins and Synthetic Applications. Org Lett 2021; 23:5581-5586. [PMID: 34210129 DOI: 10.1021/acs.orglett.1c02035] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein we report a catalyst- and metal-free visible-light-mediated protocol enabling the iodoamination of miscellaneous olefins. This protocol is characterized by high yields under environmentally benign reaction conditions utilizing commercially available substrates and a green and biodegradable solvent. Furthermore, the protocol allows for late-stage functionalization of bioactive molecules and can be scaled to gram quantities of product, which offers manifold possibilities for further transformations, including morpholine, piperidine, pyrrolidine, and aziridine synthesis.
Collapse
Affiliation(s)
- Sebastian Engl
- Institute of Organic Chemistry, University of Regensburg, 93053 Regensburg, Germany
| | - Oliver Reiser
- Institute of Organic Chemistry, University of Regensburg, 93053 Regensburg, Germany
| |
Collapse
|
3
|
Astakhova VV, Moskalik MY, Shainyan BA. Solvent interception, heterocyclization and desilylation upon NBS-induced sulfamidation of trimethyl(vinyl)silane. Org Biomol Chem 2019; 17:7927-7937. [PMID: 31418436 DOI: 10.1039/c9ob01689a] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of trimethyl(vinyl)silane with sulfonamides in the presence of N-bromosuccinimide was shown to proceed regioselectively in methylene chloride under mild conditions and led to the products of bromosulfamidation in up to 88% yield. The obtained adducts undergo base-promoted dehydrobromination to give 2-trimethylsilyl-N-sulfonyl aziridines in a close to quantitative yield. In the reaction with trifluoromethanesulfonamide in acetonitrile or tetrahydrofuran, the Ritter-type (solvent-interception) products were obtained and converted to 1-triflyl-2-methyl-5-(trimethylsilyl)-2-imidazoline or 4-triflyl-3-(trimethylsilyl)-1,4-oxazocane in almost quantitative yield.
Collapse
Affiliation(s)
- Vera V Astakhova
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 664033 Irkutsk, Russia.
| | | | | |
Collapse
|
4
|
Moskalik MY, Astakhova VV, Ganin AS, Shainyan BA. Reaction of N,N′-Methylenebis(trifluoromethanesulfonamide) with Styrene under Oxidative Conditions. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2019. [DOI: 10.1134/s1070428019050270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
5
|
Zhu N, Li Y, Bao H. Metal-free intermolecular aminochlorination of unactivated alkenes. Org Chem Front 2018. [DOI: 10.1039/c8qo00001h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We report a metal-free method for the synthesis of vicinal chloroamines by intermolecular aminochlorination of unactivated alkenes.
Collapse
Affiliation(s)
- Nengbo Zhu
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- State Key Laboratory of Structural Chemistry
- Center for Excellence in Molecular Synthesis
- Fujian Institute of Research on the Structure of Matter
- University of Chinese Academy of Sciences
| | - Yajun Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- State Key Laboratory of Structural Chemistry
- Center for Excellence in Molecular Synthesis
- Fujian Institute of Research on the Structure of Matter
- University of Chinese Academy of Sciences
| | - Hongli Bao
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- State Key Laboratory of Structural Chemistry
- Center for Excellence in Molecular Synthesis
- Fujian Institute of Research on the Structure of Matter
- University of Chinese Academy of Sciences
| |
Collapse
|
6
|
Yu WZ, Cheng YA, Wong MW, Yeung YY. Atmosphere- and Temperature-Controlled Regioselective Aminobromination of Olefins. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201600821] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wesley Zongrong Yu
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543
| | - Yi An Cheng
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543
| | - Ming Wah Wong
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543
| | - Ying-Yeung Yeung
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543
- Department of Chemistry; The Chinese University of Hong Kong, Shatin, NT; Hong Kong People's Republic of China
| |
Collapse
|
7
|
Rajbongshi KK, Saikia I, Chanu LD, Roy S, Phukan P. A Metal-Free Protocol for Aminofunctionalization of Olefins Using TsNBr2. J Org Chem 2016; 81:5423-32. [PMID: 27269517 DOI: 10.1021/acs.joc.6b00785] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
N,N-Dibromo-p-toluene sulfonamide (TsNBr2) has been found to be an effective reagent for various aminofunctionalization reactions. This reagent behaves both as an electrophilic bromine source as well as amine to react with olefins under different conditions to yield aminoether, imidazoline, diamine and amino bromine. The reaction proceeds rapidly under mild conditions with high regioselectivity. Olefins react with TsNBr2 in moist THF to form δ-amino ether at room temperature. Treatment of TsNBr2 with olefin in MeCN at room temperature produced imidazoline in high yield. Further modification of the reaction condition resulted in the development of a one-step procedure for the synthesis of N-acetyl,N'-tosyl diamine derivatives directly from olefin. When the olefin was treated with 2.4 mol equiv of TsNBr2 in the presence of K2CO3, N,N'-ditosyl diamine derivative was obtained in moderate yield. Instantaneous formation of aminobromine was observed when an olefin was treated with the reagent in dry CH2Cl2 at room temperature.
Collapse
Affiliation(s)
| | | | | | - Subhasish Roy
- Department of Chemistry, Gauhati University , Guwahati 781014, Assam, India
| | - Prodeep Phukan
- Department of Chemistry, Gauhati University , Guwahati 781014, Assam, India
| |
Collapse
|
8
|
Saikia I, Borah AJ, Phukan P. Use of Bromine and Bromo-Organic Compounds in Organic Synthesis. Chem Rev 2016; 116:6837-7042. [PMID: 27199233 DOI: 10.1021/acs.chemrev.5b00400] [Citation(s) in RCA: 283] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Bromination is one of the most important transformations in organic synthesis and can be carried out using bromine and many other bromo compounds. Use of molecular bromine in organic synthesis is well-known. However, due to the hazardous nature of bromine, enormous growth has been witnessed in the past several decades for the development of solid bromine carriers. This review outlines the use of bromine and different bromo-organic compounds in organic synthesis. The applications of bromine, a total of 107 bromo-organic compounds, 11 other brominating agents, and a few natural bromine sources were incorporated. The scope of these reagents for various organic transformations such as bromination, cohalogenation, oxidation, cyclization, ring-opening reactions, substitution, rearrangement, hydrolysis, catalysis, etc. has been described briefly to highlight important aspects of the bromo-organic compounds in organic synthesis.
Collapse
Affiliation(s)
| | - Arun Jyoti Borah
- Department of Chemistry, Gauahti University , Guwahati-781014, Assam, India
| | - Prodeep Phukan
- Department of Chemistry, Gauahti University , Guwahati-781014, Assam, India
| |
Collapse
|
9
|
Yu WZ, Chen F, Cheng YA, Yeung YY. Catalyst-Free and Metal-Free Electrophilic Bromoamidation of Unactivated Olefins Using the N-Bromosuccinimide/Sulfonamide Protocol. J Org Chem 2015; 80:2815-21. [DOI: 10.1021/jo502416r] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Wesley Zongrong Yu
- 3 Science Drive 3, Department
of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Feng Chen
- 3 Science Drive 3, Department
of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Yi An Cheng
- 3 Science Drive 3, Department
of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Ying-Yeung Yeung
- 3 Science Drive 3, Department
of Chemistry, National University of Singapore, Singapore 117543, Singapore
| |
Collapse
|
10
|
Chen S, Han J, Li G, Pan Y. Highly diastereoselective aminobromination of β-methyl-β-nitrostyrenes with t-butyl N,N-dibromocarbamate/t-butyl carbamate as bromine/nitrogen sources. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.02.113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
11
|
Affiliation(s)
- Sherry R. Chemler
- Department of Chemistry, The State University of New York at Buffalo, Buffalo,
New York, United States
| | - Michael T. Bovino
- Department of Chemistry, The State University of New York at Buffalo, Buffalo,
New York, United States
| |
Collapse
|
12
|
Alix A, Lalli C, Retailleau P, Masson G. Highly enantioselective electrophilic α-bromination of enecarbamates: chiral phosphoric acid and calcium phosphate salt catalysts. J Am Chem Soc 2012; 134:10389-92. [PMID: 22686436 DOI: 10.1021/ja304095z] [Citation(s) in RCA: 152] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Metal-free chiral phosphoric acids and chiral calcium phosphates both catalyze highly enantio- and diastereoselective electrophilic α-bromination of enecarbamates to provide an atom-economical synthesis of enantioenriched vicinal haloamines. Either enantiomer can be formed in good yield with excellent diastereo- and enantioselectivity simply by switching the catalyst from a phosphoric acid to its calcium salt.
Collapse
Affiliation(s)
- Aurélien Alix
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France
| | | | | | | |
Collapse
|
13
|
Li W, Chen Z, Zhou J, Hu J, Xia W. Sodium Acetate-catalyzed Regiospecific and High Stereoselective Aminobromination of β,β-Dicyanostyrene Derivatives with NBS as Nitrogen/Bromine Source. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201100346] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
14
|
Zhou W, An G, Zhang G, Han J, Pan Y. Ligand-free palladium-catalyzed intramolecular Heck reaction of secondary benzylic bromides. Org Biomol Chem 2011; 9:5833-7. [DOI: 10.1039/c1ob05231d] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
15
|
Zhi S, Mei H, Zhang G, Sun H, Han J, Li G, Pan Y. The combination of benzamides/NCS as nitrogen/halogen sources for aminohalogenation of β-nitrostyrenes resulting in dichlorinated haloamides. Sci China Chem 2010. [DOI: 10.1007/s11426-010-4001-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
16
|
Sun H, Zhang G, Zhi S, Han J, Li G, Pan Y. Copper-catalyzed aminobromination/elimination process: an efficient access to α,β-unsaturated vicinal haloamino ketones and esters. Org Biomol Chem 2010; 8:4236-9. [DOI: 10.1039/c0ob00283f] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|