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Goswami D, Mishra D, Phukan P. Silver acetate-catalyzed synthesis of cyclic sulfonyl guanidine with exocyclic double bond. Mol Divers 2023; 27:2545-2553. [PMID: 36376719 DOI: 10.1007/s11030-022-10568-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/05/2022] [Indexed: 11/16/2022]
Abstract
An efficient protocol for the synthesis of cyclic guanidine with exocyclic double bond has been developed. The synthesis has been achieved via intramolecular hydroamination of an intermediate propargyl guanidine by using silver acetate as catalyst in the presence of acetic acid. The reaction proceeds via the formation of acyclic propargyl guanidine in a one-pot reaction of N,N-dibromoarylsulfonamides, isonitriles, and propargylamine in the presence of K2CO3. In the second stage of the synthesis, the acyclic guanidine selectively undergoes 5-exo-dig cyclization in the presence of silver acetate and acetic acid to produce the five-membered cyclic guanidine framework having an exocyclic double bond as the constituent part. Short reaction time, wide substrate scope with good to high yields, and good functional group tolerance are the remarkable achievement of the present protocol.
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Affiliation(s)
- Dikshita Goswami
- Department of Chemistry, Gauhati University, Guwahati, Assam, 781014, India
| | - Debashish Mishra
- Department of Chemistry, Gauhati University, Guwahati, Assam, 781014, India
| | - Prodeep Phukan
- Department of Chemistry, Gauhati University, Guwahati, Assam, 781014, India.
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2
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Mishra D, Rajkhowa S, Phukan P. Unanticipated switch of reactivity of isonitrile via N≡C bond scission: Cascade formation of symmetrical sulfonyl guanidine. iScience 2023; 26:107258. [PMID: 37520733 PMCID: PMC10384224 DOI: 10.1016/j.isci.2023.107258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 05/02/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023] Open
Abstract
Unanticipated formation of symmetrical sulfonyl guanidine was observed while treating isonitriles with N,N-dibromoarylsulfonamides in absence of an external amine source. Interesting feature of this work is that one molecule of isonitrile initially reacts with dibromoarylsulfonamide via the C-end to produce the intermediate carbodiimide while the other molecule undergoes C≡N triple bond cleavage to react as amine source with the intermediate. This switch of reactivity from C-center to N-center of the isonitrile generated symmetrical guanidine.
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Affiliation(s)
- Debashish Mishra
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
| | - Sagarika Rajkhowa
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
| | - Prodeep Phukan
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
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3
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Mishra D, Loukrakpam DC, Neog SR, Hazarika D, Phukan P. A Switchable Protocol for Selective Synthesis of
gem
‐Dibromo Compounds and Amides from Ketoximes using TsNBr
2. ChemistrySelect 2022. [DOI: 10.1002/slct.202203449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Debashish Mishra
- Department of Chemistry Gauhati University Guwahati 781014 Assam India
| | | | - Smriti Rekha Neog
- Department of Chemistry Gauhati University Guwahati 781014 Assam India
| | - Debojit Hazarika
- Department of Chemistry Gauhati University Guwahati 781014 Assam India
| | - Prodeep Phukan
- Department of Chemistry Gauhati University Guwahati 781014 Assam India
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4
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Mishra D, Phukan P. A Unified Approach for the Synthesis of Isourea and Isothiourea from Isonitrile and N,N-Dibromoarylsulfonamides. J Org Chem 2021; 86:17581-17593. [PMID: 34855412 DOI: 10.1021/acs.joc.1c01578] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A unified approach has been developed for the synthesis of both isourea and isothiourea in a three-component coupling reaction by treating alcohols or thiols respectively with N,N-dibromoarylsulfonamides and isonitrile and in the presence of K2CO3. This metal-free process proceeds via carbodiimide intermediate at room temperature within a very short reaction time. A library of sulfonylisoureas and isothioureas has been made using this synthetic protocol with wide substrate scope in good to high yields.
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Affiliation(s)
- Debashish Mishra
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
| | - Prodeep Phukan
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
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5
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Mishra D, Borah AJ, Phukan P, Hazarika D, Phukan P. Unprecedented 1,3-tert-butyl migration via the C–N single bond scission of isonitrile: an expedient metal-free route to N-sulfonyl amidines. Chem Commun (Camb) 2020; 56:8408-8411. [DOI: 10.1039/d0cc02430a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of tert-butyl isonitrile with ArSO2NBr2 and nitrile led to simultaneous C–N single bond scission of isonitrile and migration of tert-alkyl group to nitrogen centre of the nitrile precursor, resulting in the formation of N-sufonyl amidine.
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6
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Loukrakpam DC, Phukan P. Metal‐Free One‐Pot Conversion of Olefins and Alkynes to Amides Using TsNBr
2
, I
2
and Aqueous NH
3
at Room Temperature. ChemistrySelect 2019. [DOI: 10.1002/slct.201901530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
| | - Prodeep Phukan
- Department of ChemistryGauhati University, Guwahati 781014 Assam India
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7
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Loukrakpam DC, Phukan P. TsNBr2Mediated Synthesis of 2‐Acylbenzothiazoles and Quinoxalines from Aryl Methyl Ketones under Metal Free Condition. ChemistrySelect 2019. [DOI: 10.1002/slct.201900713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Prodeep Phukan
- Department of ChemistryGauhati University Guwahati 781014 Assam India
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8
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Reed-Berendt BG, Morrill LC. Manganese-Catalyzed N-Alkylation of Sulfonamides Using Alcohols. J Org Chem 2019; 84:3715-3724. [DOI: 10.1021/acs.joc.9b00203] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Benjamin G. Reed-Berendt
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Louis C. Morrill
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
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9
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Hazarika D, Borah AJ, Phukan P. Facile, catalyst-free cascade synthesis of sulfonyl guanidinesviacarbodiimide coupling with amines. Chem Commun (Camb) 2019; 55:1418-1421. [DOI: 10.1039/c8cc08564a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile, catalyst-free cascade synthesis of sulfonyl guanidinesviacarbodiimide intermediate coupling with amines at room temperature has been disclosed.
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Affiliation(s)
- Debojit Hazarika
- Department of Chemistry
- Gauhati University
- Gopinath Bordoloi Nagar
- Guwahati-781014
- India
| | - Arun Jyoti Borah
- Department of Chemistry
- Gauhati University
- Gopinath Bordoloi Nagar
- Guwahati-781014
- India
| | - Prodeep Phukan
- Department of Chemistry
- Gauhati University
- Gopinath Bordoloi Nagar
- Guwahati-781014
- India
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10
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Hazarika D, Phukan P. TsNBr2 promoted decarboxylative bromination of α,β-unsaturated carboxylic acids. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.11.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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11
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Sarma MJ, Phukan P. Metal-free synthesis of secondary amines by the reaction of tosyl triazene and aryl boronic acid. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2017.1410175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - Prodeep Phukan
- Department of Chemistry, Gauhati University, Guwahati, Assam, India
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12
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Loukrakpam DC, Phukan P. CuI catalyzed sulfamidation of arylboronic acid using TsNBr2 at room temperature. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.11.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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13
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Zheng C, Liu X, Ma C. Organocatalytic Direct N-Acylation of Amides with Aldehydes under Oxidative Conditions. J Org Chem 2017; 82:6940-6945. [DOI: 10.1021/acs.joc.7b00457] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chenguang Zheng
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Xiang Liu
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Cheng Ma
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
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14
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Hazarika D, Phukan P. Metal free synthesis of quinoxalines from alkynes via a cascade process using TsNBr2. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.056] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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15
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Hopkins MD, Scott KA, DeMier BC, Morgan HR, Macgruder JA, Lamar AA. Formation of N-sulfonyl imines from iminoiodinanes by iodine-promoted, N-centered radical sulfonamidation of aldehydes. Org Biomol Chem 2017; 15:9209-9216. [DOI: 10.1039/c7ob02120h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A light-promoted, non-traditional carbonyl activation via a N-centered radical (NCR) species to produce activated imines using iminoiodinanes is reported.
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Affiliation(s)
- Megan D. Hopkins
- Department of Chemistry and Biochemistry
- The University of Tulsa
- Tulsa
- USA
| | - Kristina A. Scott
- Department of Chemistry and Biochemistry
- The University of Tulsa
- Tulsa
- USA
| | | | - Heather R. Morgan
- Department of Chemistry and Biochemistry
- The University of Tulsa
- Tulsa
- USA
| | | | - Angus A. Lamar
- Department of Chemistry and Biochemistry
- The University of Tulsa
- Tulsa
- USA
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16
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Metal-Free Benzylic C−H Amination via Electrochemically Generated Benzylaminosulfonium Ions. Chemistry 2016; 23:61-64. [DOI: 10.1002/chem.201604484] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Indexed: 12/12/2022]
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18
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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: 287] [Impact Index Per Article: 35.9] [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.
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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
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19
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Wang L, Borah AJ, Yan G. Transition-metal-free direct amination of simple arenes with sulfonyl azides. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.02.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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20
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Yang CH, Fan WW, Liu GQ, Duan L, Li L, Li YM. On the understanding of BF3·Et2O-promoted intra- and intermolecular amination and oxygenation of unfunctionalized olefins. RSC Adv 2015. [DOI: 10.1039/c5ra10513g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
BF3·Et2O was found to be effective for the amination and oxygenation of unfunctionalized olefins. In the presence of 3 equiv. of BF3·Et2O, intra- and intermolecular amination and oxygenation reactions could be realized in up to 99% isolated yields.
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Affiliation(s)
- Chun-Hua Yang
- State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Tianjin Key Laboratory of Molecular Drug Research
- Nankai University
- Tianjin 300071
| | - Wen-Wen Fan
- State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Tianjin Key Laboratory of Molecular Drug Research
- Nankai University
- Tianjin 300071
| | - Gong-Qing Liu
- State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Tianjin Key Laboratory of Molecular Drug Research
- Nankai University
- Tianjin 300071
| | - Lili Duan
- State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Tianjin Key Laboratory of Molecular Drug Research
- Nankai University
- Tianjin 300071
| | - Lin Li
- State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Tianjin Key Laboratory of Molecular Drug Research
- Nankai University
- Tianjin 300071
| | - Yue-Ming Li
- State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Tianjin Key Laboratory of Molecular Drug Research
- Nankai University
- Tianjin 300071
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21
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22
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Rajbongshi KK, Sarma MJ, Phukan P. A catalyst-free protocol for direct oxidative esterification of alcohols and aldehydes. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.124] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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23
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24
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Jin LM, Lu H, Cui Y, Lizardi CL, Arzua TN, Wojtas L, Cui X, Zhang XP. Selective Radical Amination of Aldehydic C(sp 2)-H Bonds with Fluoroaryl Azides via Co(II)-Based Metalloradical Catalysis: Synthesis of N-Fluoroaryl Amides from Aldehydes under Neutral and Nonoxidative Conditions. Chem Sci 2014; 5:2422-2427. [PMID: 25071929 DOI: 10.1039/c4sc00697f] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The Co(II) complex of the D2h-symmetric amidoporphyrin 3,5-Di t Bu-IbuPhyrin, [Co(P1)], has proven to be an effective metalloradical catalyst for intermolecular amination of C(sp2)-H bonds of aldehydes with fluoroaryl azides. The [Co(P1)]-catalyzed process can employ aldehydes as the limiting reagents and operate under neutral and non-oxidative conditions, generating nitrogen gas as the only byproduct. The metalloradical aldehydic C-H amination is suitable for different combinations of aldehydes and fluoroaryl azides, producing the corresponding N-fluoroaryl amides in good to excellent yields. A series of mechanistic studies support a stepwise radical mechanism for the Co(II)-catalyzed intermolecular C-H amination.
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Affiliation(s)
- Li-Mei Jin
- Department of Chemistry, University of South Florida, Tampa, FL 33620-5250, USA. ; Tel: (+ 1) 813-974-7249
| | - Hongjian Lu
- Department of Chemistry, University of South Florida, Tampa, FL 33620-5250, USA. ; Tel: (+ 1) 813-974-7249
| | - Yuan Cui
- Department of Chemistry, University of South Florida, Tampa, FL 33620-5250, USA. ; Tel: (+ 1) 813-974-7249
| | - Christopher L Lizardi
- Department of Chemistry, University of South Florida, Tampa, FL 33620-5250, USA. ; Tel: (+ 1) 813-974-7249
| | - Thiago N Arzua
- Department of Chemistry, University of South Florida, Tampa, FL 33620-5250, USA. ; Tel: (+ 1) 813-974-7249
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, Tampa, FL 33620-5250, USA. ; Tel: (+ 1) 813-974-7249
| | - Xin Cui
- Department of Chemistry, University of South Florida, Tampa, FL 33620-5250, USA. ; Tel: (+ 1) 813-974-7249
| | - X Peter Zhang
- Department of Chemistry, University of South Florida, Tampa, FL 33620-5250, USA. ; Tel: (+ 1) 813-974-7249
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25
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In situ slow release of isocyanates: synthesis and organocatalytic application of N-acylureas. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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26
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Samanta R, Matcha K, Antonchick AP. Metal-Free Oxidative Carbon-Heteroatom Bond Formation Through C-H Bond Functionalization. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300286] [Citation(s) in RCA: 233] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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