1
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Hu S, Radosevich AT. Electrophilic C(sp 2)-H Cyanation with Inorganic Cyanate (OCN -) by P III/P V=O-Catalyzed Phase Transfer Activation. Angew Chem Int Ed Engl 2024; 63:e202409854. [PMID: 38950149 PMCID: PMC11412784 DOI: 10.1002/anie.202409854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/29/2024] [Accepted: 06/30/2024] [Indexed: 07/03/2024]
Abstract
An organophosphorus -catalyzed method for the direct electrophilic cyanation of C(sp2)-H nucleophiles with sodium cyanate (NaOCN) is reported. The catalytic deoxyfunctionalization of the OCN- anion is enabled by the use of a small-ring phosphacyclic (phosphetane) catalyst in combination with a terminal hydrosilane O-atom acceptor and a malonate-derived bromenium donor. In situ spectroscopy under single-turnover conditions demonstrate that insoluble inorganic cyanate anion is activated by bromide displacement on a bromophosphonium catalytic intermediate to give a reactive N-bound isocyanatophosphonium ion, which delivers electrophilic "CN+" equivalents to nucleophilic (hetero)arenes and alkenes with loss of a phosphine oxide. These results demonstrate the feasibility of deoxyfunctionalization of insoluble inorganic salts by PIII/PV=O catalyzed phase transfer activation.
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Affiliation(s)
- Shicheng Hu
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Alexander T Radosevich
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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2
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Yang Q, Huang S, Yin L, Wang Z, Chen X, Huang C. NBS-Promoted Synthesis of Thiocyanated Aminomaleimides and Site-Selective Intramolecular Cyclization Access to 1,4-Benzothiazepines via S-CN Bond Cleavage. J Org Chem 2024; 89:5266-5276. [PMID: 38592168 DOI: 10.1021/acs.joc.3c02607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
A transition metal-free concise and efficient protocol for the synthesis of thiocyanated aminomaleimides and benzo[e][1,4]thiazepine derivatives has been developed. The method involves an initial α-C-H thiocyanation of aminomaleimides with KSCN and TEMPO-mediated tandem S-CN bond cleavage/intramolecular cyclization substitution processes, which enables the formation of seven-membered S/N-heterocycles. This synthetic strategy provides a reliable method for the synthesis of biologically interesting benzo[e][1,4]thiazepine derivatives by using KSCN as sulfur sources as well as expands the application of enaminones thiocyanation reactions in heterocycles synthesis.
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Affiliation(s)
- Qi Yang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
- School of Chemistry and Resource Engineering, Honghe University, Mengzi 661199, P.R. China
| | - Shuntao Huang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
| | - Lu Yin
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
| | - Zhuoyu Wang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
| | - Xuebing Chen
- School of Chemistry and Resource Engineering, Honghe University, Mengzi 661199, P.R. China
| | - Chao Huang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
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3
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Gao Y, Hua R, Yin H, Chen FX. Synthesis of thiocyanato-containing phenanthrenes and dihydronaphthalenes via Lewis acid-activated tandem electrophilic thiocyanation/carbocyclization of alkynes. Org Biomol Chem 2023; 21:2417-2422. [PMID: 36857671 DOI: 10.1039/d3ob00001j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
A tandem electrophilic thiocyanation and cyclization of arene-alkynes has been developed under mild conditions, affording thiocyanato-substituted phenanthrenes, dihydronaphthalenes, 2H-chromenes and dihydroquinolines in moderate to excellent yields. This reaction provides an efficient protocol for the construction of C-SCN and C-C bonds in one step. In this transformation, N-thiocyanato reagent serves as a convenient precursor to transfer SCN+ in the presence of trimethylchlorosilane, and the cyclization exhibited exclusive 6-endo-dig selectivity. Finally, a gram scale reaction and further derivatizations highlight the utility of this synthetic strategy.
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Affiliation(s)
- Yong Gao
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology (Liangxiang Campus), Beijing 102488, China.
| | - Ruirui Hua
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology (Liangxiang Campus), Beijing 102488, China.
| | - Hongquan Yin
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology (Liangxiang Campus), Beijing 102488, China. .,Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, Beijing Institute of Technology (Liangxiang Campus), Beijing 102488, China
| | - Fu-Xue Chen
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology (Liangxiang Campus), Beijing 102488, China. .,Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, Beijing Institute of Technology (Liangxiang Campus), Beijing 102488, China
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4
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He WB, Tang LL, Jiang J, Li X, Xu X, Yang TB, He WM. Paired Electrolysis Enabled Cyanation of Diaryl Diselenides with KSCN Leading to Aryl Selenocyanates. Molecules 2023; 28:molecules28031397. [PMID: 36771059 PMCID: PMC9919590 DOI: 10.3390/molecules28031397] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 01/17/2023] [Accepted: 01/24/2023] [Indexed: 02/05/2023] Open
Abstract
The first example of paired electrolysis-enabled cyanation of diaryl diselenides, with KSCN as the green cyanating agent, has been developed. A broad range of aryl selenocyanates can be efficiently synthesized under chemical-oxidant- and additive-free, energy-saving and mild conditions.
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Affiliation(s)
- Wei-Bao He
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Luo-Lin Tang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jun Jiang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Xiao Li
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Xinhua Xu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
- Correspondence: (X.X.); (W.-M.H.)
| | - Tian-Bao Yang
- National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Nanjing Forestry University, Nanjing 210037, China
| | - Wei-Min He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
- Correspondence: (X.X.); (W.-M.H.)
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5
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Grundke C, Groß J, Vierengel N, Sirleaf J, Schmitz M, Krieger L, Opatz T. Complementary mechanochemical and biphasic approaches for the synthesis of organic thiocyanates using hexacyanoferrates as non-toxic cyanide sources. Org Biomol Chem 2023; 21:644-650. [PMID: 36562378 DOI: 10.1039/d2ob02216h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Herein, we describe two complementary approaches towards various organic thiocyanates that are affordable, reliable and follow the principles of sustainable chemistry, starting from commercially available thiols or disulfides. Additionally, the application of this mild method to the first total synthesis of psammaplin B is demonstrated. Non-toxic and inexpensive ferricyanide is used as the cyanide source, which can be activated either in a mechanochemical, solvent-free approach, or in a biphasic solvent system allowing easier work-up. A total of 27 examples is demonstrated, with up to quantitative yields.
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Affiliation(s)
- Caroline Grundke
- Department of Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany.
| | - Jonathan Groß
- Department of Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany.
| | - Nina Vierengel
- Department of Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany.
| | - Jason Sirleaf
- Department of Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany.
| | - Matthias Schmitz
- Department of Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany.
| | - Leonie Krieger
- Department of Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany.
| | - Till Opatz
- Department of Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany.
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6
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Di Tommaso EM, Norrby P, Olofsson B. Explaining Regiodivergent Vinylations with Vinylbenziodoxolones**. Angew Chem Int Ed Engl 2022; 61:e202206347. [PMID: 35748793 PMCID: PMC9541388 DOI: 10.1002/anie.202206347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Indexed: 12/02/2022]
Abstract
Vinylbenziodoxolones have recently been identified as efficient hypervalent iodine(III) reagents for electrophilic vinylations under transition metal‐free conditions. Their unique reactivity allows synthesis of either internal or terminal alkenes, depending on the nucleophile class. This paper constitutes the first mechanistic investigation of VBX vinylations, and makes use of NMR studies, deuterium labelling and computations to rationalize the observed regio‐ and stereochemical outcome. Internal alkene formation in S‐vinylation was found to proceed through the ligand coupling mechanism typical of diaryliodonium salts, whereas terminal alkene formation in P‐vinylations took place via a phosphinous acid‐coordinated VBX complex, which underwent concerted deprotonation and Michael‐type addition. Subsequent base‐assisted protonation and E2 elimination delivered the terminal alkene. The findings can be used to predict the regioselectivity in vinylations of other nucleophile classes.
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Affiliation(s)
- Ester M. Di Tommaso
- Department of Organic Chemistry Arrhenius Laboratory Stockholm University 10691 Stockholm Sweden
| | - Per‐Ola Norrby
- Data Science and Modelling Pharmaceutical Sciences R&D, AstraZeneca Gothenburg Sweden
| | - Berit Olofsson
- Department of Organic Chemistry Arrhenius Laboratory Stockholm University 10691 Stockholm Sweden
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7
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Jiang C, Zhu Y, Li H, Liu P, Sun P. Direct Cyanation of Thiophenols or Thiols to Access Thiocyanates under Electrochemical Conditions. J Org Chem 2022; 87:10026-10033. [PMID: 35866614 DOI: 10.1021/acs.joc.2c00995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A novel electrochemical cross-coupling method for the synthesis of thiocyanates via the direct cyanation of readily available thiophenols or thiols with trimethylsilyl cyanide (TMSCN) was developed. This approach was also suitable for selenols. External oxidant-free, transition-metal-free and mild operating conditions were the main advantages of this protocol. A series of thiocyanates and selenocyanates could be obtained in moderate to high yields.
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Affiliation(s)
- Cong Jiang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Yan Zhu
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Heng Li
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Ping Liu
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Peipei Sun
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
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8
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Di Tommaso EM, Norrby PO, Olofsson B. Explaining Regio‐Divergent Vinylations with Vinylbenziodoxolones. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Per-Ola Norrby
- AstraZeneca Sweden: AstraZeneca AB Data Science and Modelling, Pharmaceutical Sciences, R&D Gothenburg SWEDEN
| | - Berit Olofsson
- Stockholm University Departemt of Organic Chemistry Arrhenius Laboratory 106 91 Stockholm SWEDEN
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9
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Karmaker PG, huo F. Organic Selenocyanates: Rapid Advancements and Applications in the Field of Organic Chemistry. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Pran Gopal Karmaker
- Neijiang Normal University Chemistry & Chemical Engineering 705#, Dongtong Road, Neijiang, China, 641100Neijiang Normal University 641100 Neijiang CHINA
| | - feng huo
- Neijiang Normal University Chemistry Dongtong Rood #705 641100 Neijiang CHINA
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10
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Poeira DL, Negrão ACR, Faustino H, Coelho JAS, Gomes CSB, Gois PMP, Marques MMB. Hypervalent Iodine(III) Reagents with Transferable Primary Amines: Structure and Reactivity on the Electrophilic α-Amination of Stabilized Enolates. Org Lett 2022; 24:776-781. [PMID: 34978835 DOI: 10.1021/acs.orglett.1c04312] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A new family of hypervalent iodine reagents containing transferable primary amine groups is described. Benziodoxolone-based reagents were synthesized on the gram-scale through operationally simple reactions in up to quantitative yields. These bench-stable solids were characterized by X-ray analysis and successfully employed in the α-amination of indanone-based β-ketoesters in up to 83% yield. Mechanistic studies indicate a substitution mechanism involving an electrophilic amine.
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Affiliation(s)
- Diogo L Poeira
- LAQV@REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Ana Cláudia R Negrão
- LAQV@REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Hélio Faustino
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisboa, Portugal
| | - Jaime A S Coelho
- Centro de Química Estrutural, Faculty of Sciences, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Clara S B Gomes
- LAQV@REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.,Associate Laboratory i4HB - Institute for Health and Bioeconomy, UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Pedro M P Gois
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisboa, Portugal
| | - M Manuel B Marques
- LAQV@REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
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11
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Gao M, Vuagnat M, Jubault P, Besset T. N
‐Thiocyanato‐2,10‐camphorsultam Derivatives: Design and Applications of Original Electrophilic Thiocyanating Reagents. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mélissa Gao
- Normandie Univ INSA Rouen UNIROUEN CNRS COBRA (UMR 6014) 76000 Rouen France
| | - Martin Vuagnat
- Normandie Univ INSA Rouen UNIROUEN CNRS COBRA (UMR 6014) 76000 Rouen France
| | - Philippe Jubault
- Normandie Univ INSA Rouen UNIROUEN CNRS COBRA (UMR 6014) 76000 Rouen France
| | - Tatiana Besset
- Normandie Univ INSA Rouen UNIROUEN CNRS COBRA (UMR 6014) 76000 Rouen France
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12
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Hang Z, Tong X, Li Z, Wang ZY, Xue W. A practical method for N-cyanation of secondary amines and sulfonamides. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2021.153564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Zhupeng G, Kai X, Xuetao X, Yating Z, Daoyong Z. α-Benzoyloxylation of β-Dicarbonyl Compounds Involving Cyclic Trivalent Iodine Reagents. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202205031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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14
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Chen Z, Yuan W. N-Cyanation of Primary and Secondary Amines with Cyanobenzio-doxolone (CBX) Reagent. Chemistry 2021; 27:14836-14840. [PMID: 34390036 DOI: 10.1002/chem.202102354] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Indexed: 01/11/2023]
Abstract
An efficient electrophilic N-cyanation of amines with a stable and less-toxic cyanobenziodoxole reagent towards the synthesis of cyanamides is disclosed. This synthetically practicable strategy allows the construction of a wide variety of cyanamides under very mild and simple conditions with a broad functional group compatibility, and showcases a huge potential in late-stage modification of complex molecules.
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Affiliation(s)
- Zimin Chen
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica Hubei Key Laboratory of Materials Chemistry and Service Failure School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, 430074, P. R. China
| | - Weiming Yuan
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica Hubei Key Laboratory of Materials Chemistry and Service Failure School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, 430074, P. R. China
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15
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Kalaramna P, Goswami A. Temperature‐Controlled Chemoselective Synthesis of Thiosulfonates and Thiocyanates: Novel Reactivity of KXCN (X=S, Se) towards Organosulfonyl Chlorides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Pratibha Kalaramna
- Department of Chemistry, SS Bhatnagar Building, Main Campus Indian Institute of Technology Ropar Rupnagar Punjab 140001 India
| | - Avijit Goswami
- Department of Chemistry, SS Bhatnagar Building, Main Campus Indian Institute of Technology Ropar Rupnagar Punjab 140001 India
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16
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Le Du E, Duhail T, Wodrich MD, Scopelliti R, Fadaei‐Tirani F, Anselmi E, Magnier E, Waser J. Structure and Reactivity of N-Heterocyclic Alkynyl Hypervalent Iodine Reagents. Chemistry 2021; 27:10979-10986. [PMID: 33978974 PMCID: PMC8361724 DOI: 10.1002/chem.202101475] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Indexed: 12/23/2022]
Abstract
Ethynylbenziodoxol(on)e (EBX) cyclic hypervalent iodine reagents have become popular reagents for the alkynylation of radicals and nucleophiles, but only offer limited possibilities for further structure and reactivity fine-tuning. Herein, the synthesis of new N-heterocyclic hypervalent iodine reagents with increased structural flexibility based on amide, amidine and sulfoximine scaffolds is reported. Solid-state structures of the reagents are reported and the analysis of the I-Calkyne bond lengths allowed assessing the trans-effect of the different substituents. Molecular electrostatic potential (MEP) maps of the reagents, derived from DFT computations, revealed less pronounced σ-hole regions for sulfonamide-based compounds. Most reagents reacted well in the alkynylation of β-ketoesters. The alkynylation of thiols afforded more variable yields, with compounds with a stronger σ-hole reacting better. In metal-mediated transformations, the N-heterocyclic hypervalent iodine reagents gave inferior results when compared to the O-based EBX reagents.
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Affiliation(s)
- Eliott Le Du
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Thibaut Duhail
- Institut Lavoisier de VersaillesUniversité Paris-Saclay, UVSQ, CNRS, UMR 81807800VersaillesFrance
| | - Matthew D. Wodrich
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Rosario Scopelliti
- Institute of Chemical Sciences and EngineeringEcole Polytechnique Fédérale de LausanneEPFL SB ISIC GE, BCH 2111, 1015 LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Farzaneh Fadaei‐Tirani
- Institute of Chemical Sciences and EngineeringEcole Polytechnique Fédérale de LausanneEPFL SB ISIC GE, BCH 2111, 1015 LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Elsa Anselmi
- Institut Lavoisier de VersaillesUniversité Paris-Saclay, UVSQ, CNRS, UMR 81807800VersaillesFrance
- Université de ToursFaculté des Sciences et Techniques37200ToursFrance
| | - Emmanuel Magnier
- Institut Lavoisier de VersaillesUniversité Paris-Saclay, UVSQ, CNRS, UMR 81807800VersaillesFrance
| | - Jerome Waser
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
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17
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Gao M, Vuagnat M, Chen MY, Pannecoucke X, Jubault P, Besset T. Design and Use of Electrophilic Thiocyanating and Selenocyanating Reagents: An Interesting Trend for the Construction of SCN- and SeCN-Containing Compounds. Chemistry 2021; 27:6145-6160. [PMID: 33283371 DOI: 10.1002/chem.202004974] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Indexed: 01/01/2023]
Abstract
Organothiocyanate and organoselenocyanate compounds are of paramount importance in organic chemistry as they are key intermediates to access sulfur- and selenium-containing compounds. Therefore, among the different synthetic pathways to get SCN- and SeCN-containing molecules, original methodologies using electrophilic reagents have recently been explored. This Minireview will showcase the recent advances that have been made. In particular, the design of several electrophilic sources and their applications for the thiocyanation and the selenocyanation of various classes of compounds will be highlighted and discussed.
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Affiliation(s)
- Mélissa Gao
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Martin Vuagnat
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Mu-Yi Chen
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Xavier Pannecoucke
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Philippe Jubault
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Tatiana Besset
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
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18
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Li X, Golz C, Alcarazo M. α-Diazo Sulfonium Triflates: Synthesis, Structure, and Application to the Synthesis of 1-(Dialkylamino)-1,2,3-triazoles. Angew Chem Int Ed Engl 2021; 60:6943-6948. [PMID: 33351262 PMCID: PMC8048477 DOI: 10.1002/anie.202014775] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/13/2020] [Indexed: 01/03/2023]
Abstract
The one-pot synthesis of a series of sulfonium salts containing transferable diazomethyl groups is described, and the structure of these compounds is elucidated by X-ray crystallography. Under photochemical conditions, reaction of these salts with N,N-dialkyl hydrazones affords 1-(dialkylamino)-1,2,3-triazoles via diazomethyl radical addition to the azomethine carbon followed by intramolecular ring closure. The straightforward transformation of the structures thus obtained into mesoionic carbene-metal complexes is also reported and the donor properties of these new ligands characterized.
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Affiliation(s)
- Xiangdong Li
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstr. 237077GöttingenGermany
| | - Christopher Golz
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstr. 237077GöttingenGermany
| | - Manuel Alcarazo
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstr. 237077GöttingenGermany
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19
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Wen X, Liu X, Yang Z, Xie M, Liu Y, Long L, Chen Z. "On water" nano-Cu 2O-catalyzed CO-free one-pot multicomponent cascade cyanation-annulation-aminolysis reaction toward phthalimides. Org Biomol Chem 2021; 19:1738-1743. [PMID: 33543173 DOI: 10.1039/d1ob00073j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
An efficient nano-Cu2O-catalyzed cascade multicomponent reaction of 2-halobenzoic acids and trimethylsilyl cyanide with diverse amines was developed using water as a solvent, affording versatile N-substituted phthalimide derivatives in moderate to excellent yields. This novel strategy features carbon monoxide gas-free, environmentally benign, one-pot multistep transformation, commercially available reagents, a cheap catalyst without any additives, wide functional group tolerance, and operational convenience.
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Affiliation(s)
- Xiaowei Wen
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou, 341000, China.
| | - Xiaojuan Liu
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou, 341000, China.
| | - Zhiqi Yang
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou, 341000, China.
| | - Menglan Xie
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou, 341000, China.
| | - Yuxi Liu
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou, 341000, China.
| | - Lipeng Long
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou, 341000, China.
| | - Zhengwang Chen
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou, 341000, China.
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20
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Li X, Golz C, Alcarazo M. α‐Diazo Sulfonium Triflates: Synthesis, Structure, and Application to the Synthesis of 1‐(Dialkylamino)‐1,2,3‐triazoles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014775] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xiangdong Li
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstr. 2 37077 Göttingen Germany
| | - Christopher Golz
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstr. 2 37077 Göttingen Germany
| | - Manuel Alcarazo
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstr. 2 37077 Göttingen Germany
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21
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Takenaga N, Dohi T, China H, Kumar R. Azido, Cyano, and Nitrato Cyclic Hypervalent Iodine(III) Reagents in Heterocycle Synthesis. HETEROCYCLES 2021. [DOI: 10.3987/rev-20-sr(k)5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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22
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Zhang X, Huang X, Zhou Y, Liu M, Wu H. Metal‐Free Synthesis of Aryl Selenocyanates and Selenaheterocycles with Elemental Selenium. Chemistry 2020; 27:944-948. [DOI: 10.1002/chem.202004005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/03/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Xue Zhang
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 P. R. China
| | - Xiao‐Bo Huang
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 P. R. China
| | - Yun‐Bing Zhou
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 P. R. China
| | - Miao‐Chang Liu
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 P. R. China
| | - Hua‐Yue Wu
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 P. R. China
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23
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Abstract
This minireview aims to cover the developments over the past two decades in the chemistry of sulfonium salts. Specifically, insight is provided into the synthetic strategies available for the preparation of these compounds, the different reactivity patterns that are expected depending on their structural features or the reaction conditions applied, and the diversity of organic scaffolds that can thereby be synthesized. Additionally, the pros and cons derived from the use of sulfonium salts are presented and critically compared, when possible, in relation to reagents not based on sulfur but depicting similar reactivity.
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Affiliation(s)
- Sergei I. Kozhushkov
- Institut für Organische und Biomolekulare ChemieGeorg‐August‐Universität GöttingenTammannstr. 237077GöttingenGermany
| | - Manuel Alcarazo
- Institut für Organische und Biomolekulare ChemieGeorg‐August‐Universität GöttingenTammannstr. 237077GöttingenGermany
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24
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Affiliation(s)
- Wen-Biao Wu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, People’s Republic of China
| | - Jin-Sheng Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, People’s Republic of China
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou 571158, People’s Republic of China
| | - Jian Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, People’s Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, Shanghai 200032, People’s Republic of China
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25
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Peng L, Hu Z, Wang H, Wu L, Jiao Y, Tang Z, Xu X. Direct cyanation, hydrocyanation, dicyanation and cyanofunctionalization of alkynes. RSC Adv 2020; 10:10232-10244. [PMID: 35498608 PMCID: PMC9050399 DOI: 10.1039/d0ra01286f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 03/04/2020] [Indexed: 12/11/2022] Open
Abstract
In this review, direct cyanation, hydrocyanation, dicyanation, cyanofunctionalization and other cyanation reactions of alkynes were highlighted. Firstly, the use of nitriles and development of cyanation was simply introduced. After presenting the natural properties of alkynes, cyanation reactions of alkynes were classified and introduced in detail. Transition metal catalysed direct cyanation and hydrocyanation of alkynes gave alkynyl cyanides and alkenyl nitriles in good yields. Dicyanation of alkynes produced 1,2-dicyano adducts. Cyanofunctionalization of alkynes afforded functional cyanated compounds. Thiocyanation and selenocyanation yielded the expected functional vinylthiocyanates and vinylselenocyanates. A plausible reaction mechanism is presented if available.
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Affiliation(s)
- Lifen Peng
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology Xiangtan 411201 P. R. China
| | - Zhifang Hu
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology Xiangtan 411201 P. R. China
| | - Hong Wang
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology Xiangtan 411201 P. R. China
| | - Li Wu
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology Xiangtan 411201 P. R. China
| | - Yinchun Jiao
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology Xiangtan 411201 P. R. China
| | - Zilong Tang
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology Xiangtan 411201 P. R. China
| | - Xinhua Xu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
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26
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Zhou P, Chen C, Li S. Selectfluor-initiated cyanation of disulfides to thiocyanates. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820902670] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A Selectfluor-initiated cyanation of disulfides to thiocyanates has been developed. In this process, Selectfluor was employed as the oxidant and trimethylsilyl cyanide was used as the cyanation reagent. It provides an eco-friendly and simple way to synthesize the thiocyanates.
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Affiliation(s)
- Pengpeng Zhou
- School of Chemistry and Material Engineering, Changzhou Vocational Institute of Engineering, Changzhou, P. R. China
| | - Chuan Chen
- School of Chemistry and Material Engineering, Changzhou Vocational Institute of Engineering, Changzhou, P. R. China
| | - Shubai Li
- School of Chemistry and Material Engineering, Changzhou Vocational Institute of Engineering, Changzhou, P. R. China
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27
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Mao X, Ni J, Xu B, Ding C. K2S2O8-promoted direct thiocyanation of pyrazolin-5-ones with ammonium thiocyanate at room temperature. Org Chem Front 2020. [DOI: 10.1039/c9qo01174a] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A facile and efficient approach for the direct thiocyanation of pyrazolin-5-ones under mild conditions has been established for the first time.
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Affiliation(s)
- Xiaokang Mao
- Department of Chemistry
- Innovative Drug Research Center
- School of Materials Science and Engineering
- Shanghai University
- Shanghai 200444
| | - Jiabin Ni
- CAS Key Laboratory of Receptor Research
- and the State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica (SIMM)
- Chinese Academy of Sciences
- Shanghai 201203
| | - Bin Xu
- Department of Chemistry
- Innovative Drug Research Center
- School of Materials Science and Engineering
- Shanghai University
- Shanghai 200444
| | - Chunyong Ding
- CAS Key Laboratory of Receptor Research
- and the State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica (SIMM)
- Chinese Academy of Sciences
- Shanghai 201203
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28
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Wu D, Qiu J, Li C, Yuan L, Yin H, Chen FX. Lewis Acid-Catalyzed Asymmetric Selenocyanation of β-Ketoesters with N-Selenocyanatosaccharin. J Org Chem 2019; 85:934-941. [PMID: 31820979 DOI: 10.1021/acs.joc.9b02786] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first electrophilic asymmetric selenocyanation has been achieved in the presence of Ni(OTf)2 and (R,R)-DBFOX/Ph using N-selenocyanatosaccharin as the new selenocyanation reagent. Thus, a series of α-selenocyanato-β-keto esters were synthesized with high yields (up to 99%) and good ee values (up to 92% ee). The readily preparation of the reagent and high enantioselectivity make this methodology much practical for the synthesis of chiral selenocyanates.
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Affiliation(s)
- Di Wu
- School of Chemistry & Chemical Engineering , Beijing Institute of Technology (Liangxiang Campus) , No. 8 Liangxiang East Road Fangshan District , Beijing 102488 , China
| | - Jiashen Qiu
- School of Chemistry & Chemical Engineering , Beijing Institute of Technology (Liangxiang Campus) , No. 8 Liangxiang East Road Fangshan District , Beijing 102488 , China
| | - Chengqiu Li
- School of Chemistry & Chemical Engineering , Beijing Institute of Technology (Liangxiang Campus) , No. 8 Liangxiang East Road Fangshan District , Beijing 102488 , China
| | - Lexia Yuan
- School of Chemistry & Chemical Engineering , Beijing Institute of Technology (Liangxiang Campus) , No. 8 Liangxiang East Road Fangshan District , Beijing 102488 , China
| | - Hongquan Yin
- School of Chemistry & Chemical Engineering , Beijing Institute of Technology (Liangxiang Campus) , No. 8 Liangxiang East Road Fangshan District , Beijing 102488 , China
| | - Fu-Xue Chen
- School of Chemistry & Chemical Engineering , Beijing Institute of Technology (Liangxiang Campus) , No. 8 Liangxiang East Road Fangshan District , Beijing 102488 , China
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29
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Chen Y, Qi H, Chen N, Ren D, Xu J, Yang Z. Fluorium-Initiated Dealkylative Cyanation of Thioethers to Thiocyanates. J Org Chem 2019; 84:9044-9050. [PMID: 31244086 DOI: 10.1021/acs.joc.9b00965] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Thioethers are converted to thiocyanates via fluorium-initiated dealkylative cyanation. Selectfluor is used as the oxidant, and trimethylsilyl cyanide is used as the cyanation reagent. The well-streamlined procedure is user-friendly, operationally simple, and step-economical. The current mechanistic studies show that the sulfur radical cation and cyano radical are both involved. They combine to deliver cyanosulfonium, an intermediate toward thiocyanate after dealkylation. Alternatively, a nucleophilic mechanism is also possible. Our dealkyaltive cyanation is also efficient in synthesizing thiocyanates with strongly electrophilic functionalities.
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Affiliation(s)
| | | | | | - Demin Ren
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers , Hunan University of Science and Technology , Xiangtan 411201 , P. R. China
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30
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Averesch KFG, Pesch H, Golz C, Alcarazo M. Synthesis of Alkynylthiopyridinium Salts and Their Use as Thioketene Equivalents. Chemistry 2019; 25:10472-10477. [PMID: 31168874 DOI: 10.1002/chem.201901895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 05/24/2019] [Indexed: 11/10/2022]
Abstract
A synthetic method has been developed for the preparation of dihalo(pyridinium)sulfuranes and their transformation into alkynylthiopyridinium salts, starting from inexpensive thiopyridones. The reactivity of these salts towards different nucleophiles is evaluated. Most thiols and amines are converted into dithioesters and thioamides, respectively; whereas sterically demanding thiols delivered alkynylthioethers. These results, together with preliminary mechanistic studies reveal that alkynylthiopyridinium salts can be considered synthetic equivalents of unstable thioketenes.
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Affiliation(s)
- Kai F G Averesch
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstr 2, 37077, Göttingen, Germany
| | - Henner Pesch
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstr 2, 37077, Göttingen, Germany
| | - Christopher Golz
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstr 2, 37077, Göttingen, Germany
| | - Manuel Alcarazo
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstr 2, 37077, Göttingen, Germany
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31
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Li X, Golz C, Alcarazo M. 5-(Cyano)dibenzothiophenium Triflate: A Sulfur-Based Reagent for Electrophilic Cyanation and Cyanocyclizations. Angew Chem Int Ed Engl 2019; 58:9496-9500. [PMID: 31091342 PMCID: PMC6618300 DOI: 10.1002/anie.201904557] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Indexed: 11/06/2022]
Abstract
The synthesis of 5-(cyano)dibenzothiophenium triflate 9, prepared by activation of dibenzo[b,d]thiophene-5-oxide with Tf2 O and subsequent reaction with TMSCN is reported, and its reactivity as electrophilic cyanation reagent evaluated. The scalable preparation, easy handling and broad substrate scope of the electrophilic cyanation promoted by 9, which includes amines, thiols, silyl enol ethers, alkenes, electron rich (hetero)arenes and polyaromatic hydrocarbons, illustrate the synthetic potential of this reagent. Importantly, Lewis acid activation of the reagent is not required for the transfer process. We additionally report herein biomimetic cyanocyclization cascade reactions, which are not promoted by typical electrophilic cyanation reagents, demonstrating the superior ability of 9 to trigger challenging transformations.
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Affiliation(s)
- Xiangdong Li
- Institut für Organische und Biomolekulare ChemieGeorg-August- Universität GöttingenTammannstr 237077-GöttingenGermany
| | - Christopher Golz
- Institut für Organische und Biomolekulare ChemieGeorg-August- Universität GöttingenTammannstr 237077-GöttingenGermany
| | - Manuel Alcarazo
- Institut für Organische und Biomolekulare ChemieGeorg-August- Universität GöttingenTammannstr 237077-GöttingenGermany
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32
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Ye AH, Zhang Y, Xie YY, Luo HY, Dong JW, Liu XD, Song XF, Ding T, Chen ZM. TMSCl-Catalyzed Electrophilic Thiocyano Oxyfunctionalization of Alkenes Using N-Thiocyano-dibenzenesulfonimide. Org Lett 2019; 21:5106-5110. [PMID: 31247772 DOI: 10.1021/acs.orglett.9b01706] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Numerous electrophilic thiocyano oxyfunctionalization reactions of alkenes have been achieved using N-thiocyano-dibenzenesulfonimide, which is a new electrophilic thiocyanation reagent and could be easily prepared in two steps from dibenzenesulfonimide. This approach provides efficient, simple, and modular methods for the formation of SCN-containing heterocycles such as lactones, tetrahydrofurans, dihydrofurans, and dihydrobenzofurans in moderate to excellent yields. Meanwhile, diverse oxa-quaternary centers were rapidly constructed. Additionally, this protocol is free of transition metals and features broad substrate toleraance and mild reaction conditions.
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Affiliation(s)
- Ai-Hui Ye
- Affiliated Sixth People's Hospital South Campus and School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , P. R. China
| | - Ye Zhang
- Affiliated Sixth People's Hospital South Campus and School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , P. R. China
| | - Yu-Yang Xie
- Affiliated Sixth People's Hospital South Campus and School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , P. R. China
| | - Hui-Yun Luo
- Affiliated Sixth People's Hospital South Campus and School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , P. R. China
| | - Jia-Wei Dong
- Affiliated Sixth People's Hospital South Campus and School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , P. R. China
| | - Xiao-Dong Liu
- Affiliated Sixth People's Hospital South Campus and School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , P. R. China
| | - Xu-Feng Song
- Affiliated Sixth People's Hospital South Campus and School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , P. R. China
| | - Tongmei Ding
- Affiliated Sixth People's Hospital South Campus and School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , P. R. China
| | - Zhi-Min Chen
- Affiliated Sixth People's Hospital South Campus and School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , P. R. China
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33
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Li X, Golz C, Alcarazo M. 5‐(Cyano)dibenzothiophenium Triflate: A Sulfur‐Based Reagent for Electrophilic Cyanation and Cyanocyclizations. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904557] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Xiangdong Li
- Institut für Organische und Biomolekulare ChemieGeorg-August- Universität Göttingen Tammannstr 2 37077- Göttingen Germany
| | - Christopher Golz
- Institut für Organische und Biomolekulare ChemieGeorg-August- Universität Göttingen Tammannstr 2 37077- Göttingen Germany
| | - Manuel Alcarazo
- Institut für Organische und Biomolekulare ChemieGeorg-August- Universität Göttingen Tammannstr 2 37077- Göttingen Germany
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34
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Dyga M, Hayrapetyan D, Rit RK, Gooßen LJ. Electrochemical
ipso
‐Thiocyanation of Arylboron Compounds. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900156] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Marco Dyga
- Evonik Chair of Organic Chemistry, Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstr. 150, ZEMOS 44801 Bochum Germany
| | - Davit Hayrapetyan
- Evonik Chair of Organic Chemistry, Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstr. 150, ZEMOS 44801 Bochum Germany
| | - Raja K. Rit
- Evonik Chair of Organic Chemistry, Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstr. 150, ZEMOS 44801 Bochum Germany
| | - Lukas J. Gooßen
- Evonik Chair of Organic Chemistry, Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstr. 150, ZEMOS 44801 Bochum Germany
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35
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Lu LH, Zhou SJ, He WB, Xia W, Chen P, Yu X, Xu X, He WM. Metal-free difunctionalization of alkynes leading to alkenyl dithiocyanates and alkenyl diselenocyanates at room temperature. Org Biomol Chem 2019; 16:9064-9068. [PMID: 30456395 DOI: 10.1039/c8ob02368a] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A simple and practical method for the synthesis of alkenyl dithiocyanates and alkenyl diselenocyanates has been developed via stereoselective difunctionalization of alkynes with NaSCN or KSeCN at room temperature. Through this methodology, a series of alkenyl dithiocyanates and alkenyl diselenocyanates could be efficiently and conveniently obtained in moderate to good yields under mild and metal-free conditions by the simple use of oxone and PhI(OAc)2 as the oxidants.
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Affiliation(s)
- Ling-Hui Lu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China.
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36
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Abstract
The present review gives an overview over non-toxic cyanation agents and cyanide sources used in the synthesis of structurally diverse products containing the nitrile function. Nucleophilic as well as electrophilic agents/systems that transfer the entire CN-group were taken in consideration. Reactions in which a preexisting carbon functionality is transformed into a nitrile function by addition of nitrogen are however not covered here.
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Affiliation(s)
- Alexander M Nauth
- Institute of Organic Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany.
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37
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Gao Y, Liu Y, Wan JP. Visible Light-Induced Thiocyanation of Enaminone C–H Bond to Access Polyfunctionalized Alkenes and Thiocyano Chromones. J Org Chem 2019; 84:2243-2251. [DOI: 10.1021/acs.joc.8b02981] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yong Gao
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
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38
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Declas N, Le Vaillant F, Waser J. Revisiting the Urech Synthesis of Hydantoins: Direct Access to Enantiopure 1,5-Substituted Hydantoins Using Cyanobenziodoxolone. Org Lett 2019; 21:524-528. [PMID: 30614708 DOI: 10.1021/acs.orglett.8b03843] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A method for the synthesis of enantiopure 1,5-substituted hydantoins was developed using a hypervalent iodine cyanation reagent (cyanobenziodoxolone, CBX) as a source of electrophilic carbon. Starting from inexpensive commercially available enantiopure protected amino acids, the method allowed the synthesis of various hydantoins without epimerization. Formation of hydantoins from dipeptides was also possible, but partial epimerization was observed in this case. This synthetic strategy is user friendly as CBX is a bench-stable easy-to-handle crystalline reagent and avoids conventional multistep protocols, thus allowing the facile synthesis of a library of chiral hydantoins.
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Affiliation(s)
- Nina Declas
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306 , 1015 Lausanne , Switzerland
| | - Franck Le Vaillant
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306 , 1015 Lausanne , Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306 , 1015 Lausanne , Switzerland
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39
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Xiao JA, Li YC, Cheng XL, Chen WQ, Cui JG, Huang YM, Huang J, Xiao Q, Su W, Yang H. Selenocyanobenziodoxolone: a practical electrophilic selenocyanation reagent and its application for solid-state synthesis of α-carbonyl selenocyanates. Org Chem Front 2019. [DOI: 10.1039/c9qo00358d] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A solvent- and oxidant-free solid state synthetic methodology for the synthesis of α-carbonyl selenocyanates is developed.
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Affiliation(s)
- Jun-An Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics
- Nanning Normal University
- Nanning
- P. R. China
| | - Yu-Chun Li
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics
- Nanning Normal University
- Nanning
- P. R. China
| | - Xiu-Liang Cheng
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics
- Nanning Normal University
- Nanning
- P. R. China
| | - Wen-Qiang Chen
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics
- Nanning Normal University
- Nanning
- P. R. China
| | - Jian-Guo Cui
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics
- Nanning Normal University
- Nanning
- P. R. China
| | - Yan-Min Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics
- Nanning Normal University
- Nanning
- P. R. China
| | - Jun Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics
- Nanning Normal University
- Nanning
- P. R. China
| | - Qi Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics
- Nanning Normal University
- Nanning
- P. R. China
| | - Wei Su
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics
- Nanning Normal University
- Nanning
- P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
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40
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Hari DP, Caramenti P, Waser J. Cyclic Hypervalent Iodine Reagents: Enabling Tools for Bond Disconnection via Reactivity Umpolung. Acc Chem Res 2018; 51:3212-3225. [PMID: 30485071 DOI: 10.1021/acs.accounts.8b00468] [Citation(s) in RCA: 151] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The efficient synthesis of organic compounds is an important field of research, which sets the basis for numerous applications in medicine or materials science. Based on the polarity induced by functional groups, logical bond disconnections can be deduced for the elaboration of organic compounds. Nevertheless, this classical approach makes synthesis rigid, as not all bond disconnections are possible. The concept of Umpolung has been therefore introduced: by inverting the normal polarity of functional groups, new disconnections become possible. Among the tools for achieving Umpolung, hypervalent iodine reagents occupy a privileged position. The electrophilicity of the iodine atom and the reactivity of the hypervalent bond allow access to electrophilic synthons starting from nucleophiles. Nevertheless, some classes of hypervalent iodine reagents can be too unstable for many applications, in particular involving metal catalysis. In this context, cyclic hypervalent iodine reagents, especially benziodoxolones (BXs), have been known for a long time to be more stable than their acyclic counterparts, yet their synthetic potential had not been fully exploited. In this Account, we report our efforts since 2008 on the use of BX reagents in the development of new transformations in organic synthesis, which showed for the first time their versatility as synthetic tools. Our work started with electrophilic alkynylation, as alkynes are one of the most important functional groups in organic chemistry, but are usually introduced as nucleophiles. We used ethynylbenziodoxolones (EBXs) in the direct alkynylation of nucleophiles, such as keto esters, thiols, or phosphines. The reagents could then be applied to the gold- and palladium-catalyzed alkynylation of C-H bonds on (hetero)arenes, leading to a more efficient alternative to the Sonogashira reaction. More complex reactions were then developed with formations of several bonds in a single transformation. Gold- and platinum-catalyzed cyclization/alkynylation domino processes gave access to new types of alkynylated heterocycles. Multifunctionalization of olefins became possible through intramolecular oxy- and amino-alkynylations. (Enantioselective) copper-catalyzed oxy-alkynylation of diazo compounds led to stereocenters with perfect atom economy. Finally, EBXs were also used for the alkynylation of radicals generated under photoredox conditions. Since 2013, we then extended the use of BX reagents to other transformations. Azidobenziodoxol(on)ess (ABXs) were used in the azidation of keto esters, enol silanes, and styrenes. New more stable derivatives were introduced. Cyanobenziodoxolones (CBXs) enabled the cyanation of stabilized enolates, thiols, and radicals. Finally, new BX reagents were developed for the Umpolung of indoles and pyrroles. They could be used in metal-catalyzed directed C-H functionalizations, as well as in Lewis acid mediated oxidative coupling to give functionalized bi(hetero)arenes. In the past decade, our group and others have shown that BX reagents are not only "structural beauties", but also extremely useful reagents in synthetic chemistry. A toolbox of cyclic hypervalent iodine reagents is now available to achieve Umpolung-based disconnections. We are convinced that the field is still in its infancy, and many new reagents and transformations still remain to be discovered.
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Affiliation(s)
- Durga Prasad Hari
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC
LCSO, BCH 4306, 1015 Lausanne, Switzerland
| | - Paola Caramenti
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC
LCSO, BCH 4306, 1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC
LCSO, BCH 4306, 1015 Lausanne, Switzerland
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41
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Olivito F, Costanzo P, Di Gioia ML, Nardi M, M O, Procopio A. Efficient synthesis of organic thioacetates in water. Org Biomol Chem 2018; 16:7753-7759. [PMID: 30299446 DOI: 10.1039/c8ob01896k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Thioacetates as precursors of thiols are interesting starting points for synthesizing other organosulfur compounds. Herein, we propose a simple, efficient and fast method to obtain organic thioacetates using water as a solvent. Taking into account the great attention that has been paid toward environmentally friendly synthetic procedures in the past decades, we prove the role and the strength of the thioacetate anion as a nucleophile for nucleophilic displacement reactions in an aqueous medium. The reactions were carried out under pH control, to prevent the decomposition of the mesylate starting materials, using potassium carbonate as a safe and mild base. A simple work up allows products to be obtained with excellent yield and acceptable purity.
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Affiliation(s)
- F Olivito
- Dipartimento di Scienze della Salute, Università Magna Græcia, Viale Europa, Germaneto, CZ, Italy. and Dipartimento di Chimica, Università della Calabria, Cubo 12C, Arcavacata di Rende, CS, Italy
| | - P Costanzo
- Dipartimento di Scienze della Salute, Università Magna Græcia, Viale Europa, Germaneto, CZ, Italy.
| | - M L Di Gioia
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Edificio Polifunzionale, Università della Calabria, 87030 Arcavacata di Rende, Cosenza, Italy
| | - M Nardi
- Dipartimento di Chimica, Università della Calabria, Cubo 12C, Arcavacata di Rende, CS, Italy and Dipartimento di Agraria, Università Telematica San Raffaele, Roma, Via di Val Cannuta, 247, 00166, Italy
| | - Oliverio M
- Dipartimento di Scienze della Salute, Università Magna Græcia, Viale Europa, Germaneto, CZ, Italy.
| | - A Procopio
- Dipartimento di Scienze della Salute, Università Magna Græcia, Viale Europa, Germaneto, CZ, Italy.
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42
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Abstract
A metal‐free and direct alkene C−H cyanation is described. Directing groups are not required and the mechanism involves electrophilic activation of the alkene by a cyano iodine(III) species generated in situ from a [bis(trifluoroacetoxy)iodo]arene and trimethylsilyl cyanide as the cyanide source. This C−H functionalization can be conducted on gram scale, and for noncyclic 1,1‐ and 1,2‐disubstuted alkenes high stereoselectivity is achieved, thus rendering the method highly valuable.
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Affiliation(s)
- Xi Wang
- Westfälische Wilhelms-Universität, Organisch-Chemisches Institut, Corrensstraße 40, 48149, Münster, Germany
| | - Armido Studer
- Westfälische Wilhelms-Universität, Organisch-Chemisches Institut, Corrensstraße 40, 48149, Münster, Germany
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43
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Affiliation(s)
- Xi Wang
- Westfälische Wilhelms-Universität; Organisch-Chemisches Institut; Corrensstraße 40 48149 Münster Germany
| | - Armido Studer
- Westfälische Wilhelms-Universität; Organisch-Chemisches Institut; Corrensstraße 40 48149 Münster Germany
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44
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Guo W, Tan W, Zhao M, Zheng L, Tao K, Chen D, Fan X. Direct Photocatalytic S–H Bond Cyanation with Green “CN” Source. J Org Chem 2018; 83:6580-6588. [DOI: 10.1021/acs.joc.8b00887] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Wei Guo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Wen Tan
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Mingming Zhao
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Lvyin Zheng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Kailiang Tao
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Deliang Chen
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Xiaolin Fan
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
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45
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Karmaker PG, Qiu J, Wu D, Zhang S, Yin H, Chen FX. Improved organocatalytic electrophilic α-cyanation of β-keto amides with 1-cyanato-4-nitrobenzene. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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46
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Qiu J, Wu D, Karmaker PG, Yin H, Chen FX. Enantioselective Organocatalyzed Direct α-Thiocyanation of Cyclic β-Ketoesters by N-Thiocyanatophthalimide. Org Lett 2018; 20:1600-1603. [DOI: 10.1021/acs.orglett.8b00342] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiashen Qiu
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Di Wu
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Pran Gopal Karmaker
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Hongquan Yin
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Fu-Xue Chen
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
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47
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Wu D, Qiu J, Karmaker PG, Yin H, Chen FX. N-Thiocyanatosaccharin: A "Sweet" Electrophilic Thiocyanation Reagent and the Synthetic Applications. J Org Chem 2018; 83:1576-1583. [PMID: 29302964 DOI: 10.1021/acs.joc.7b02850] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
N-Thiocyanatosaccharin (R1) was readily prepared from the sweet additive Saccharin in two steps with a 71% overall yield. By applying this new reagent to diverse nucleophiles such as benzothiophenes, indoles, oxindoles, aromatic amines, phenols, β-keto carbonyl compounds, and aromatic ketones, a novel electrophilic thiocyanation reaction was achieved with high yields (up to 99%). The potential recycling of Saccharin, the wide scope of substrates, and the mild reaction conditions made this protocol much more practical.
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Affiliation(s)
- Di Wu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology , No. 5 Zhongguancun Street, Haidian District, Beijing 100081, China
| | - Jiashen Qiu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology , No. 5 Zhongguancun Street, Haidian District, Beijing 100081, China
| | - Pran Gopal Karmaker
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology , No. 5 Zhongguancun Street, Haidian District, Beijing 100081, China
| | - Hongquan Yin
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology , No. 5 Zhongguancun Street, Haidian District, Beijing 100081, China
| | - Fu-Xue Chen
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology , No. 5 Zhongguancun Street, Haidian District, Beijing 100081, China
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48
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Kang S, Moon HK, Yoon YJ, Yoon HJ. Recent Progress in the Chemistry of Pyridazinones for Functional Group Transformations. J Org Chem 2018; 83:1-11. [PMID: 29207874 DOI: 10.1021/acs.joc.7b02481] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
While N-hetereocycles have received significant attention in organic synthesis and other research fields, the chemistry of pyridazine, a six-membered aromatic ring with two adjacent nitrogen atoms, and its derivatives has been relatively little understood. This Synopsis describes recent progress made in the synthesis of pyridazine derivatives-particularly, pyridazin-3(2H)-ones-and their utility as efficient and recyclable functional group carriers for various important organic reactions.
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Affiliation(s)
- Seohyun Kang
- Department of Chemistry, Korea University , Seoul 02841, South Korea
| | - Hyun Kyung Moon
- Department of Chemistry, Korea University , Seoul 02841, South Korea
| | - Yong-Jin Yoon
- Department of Chemistry, Gyeongsang National University , Jinju 52828, South Korea
| | - Hyo Jae Yoon
- Department of Chemistry, Korea University , Seoul 02841, South Korea
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49
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Sun MX, Wang YF, Xu BH, Ma XQ, Zhang SJ. A metal-free direct C (sp3)–H cyanation reaction with cyanobenziodoxolones. Org Biomol Chem 2018; 16:1971-1975. [DOI: 10.1039/c8ob00173a] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Metal-free direct C(sp3)–H cyanation reaction: cyanobenziodoxolones as cyanating reagents and oxidants.
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Affiliation(s)
- Ming-Xue Sun
- College of Chemistry and Chemical Engineering
- Henan University
- Henan Engineering Research Center of Resource & Energy Recovery from Waste
- Kaifeng 475004
- P.R. China
| | - Yao-Feng Wang
- CAS Key Laboratory of Green Process and Engineering
- Beijing Key Laboratory of Ionic Liquids Clean Process
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
| | - Bao-Hua Xu
- CAS Key Laboratory of Green Process and Engineering
- Beijing Key Laboratory of Ionic Liquids Clean Process
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
| | - Xin-Qi Ma
- College of Chemistry and Chemical Engineering
- Henan University
- Henan Engineering Research Center of Resource & Energy Recovery from Waste
- Kaifeng 475004
- P.R. China
| | - Suo-Jiang Zhang
- CAS Key Laboratory of Green Process and Engineering
- Beijing Key Laboratory of Ionic Liquids Clean Process
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
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50
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Chen Y, Wang S, Jiang Q, Cheng C, Xiao X, Zhu G. Palladium-Catalyzed Site-Selective sp3 C–H Bond Thiocyanation of 2-Aminofurans. J Org Chem 2017; 83:716-722. [DOI: 10.1021/acs.joc.7b02700] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yongtao Chen
- Key Laboratory of the Ministry
of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Shuaifeng Wang
- Key Laboratory of the Ministry
of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Qianwen Jiang
- Key Laboratory of the Ministry
of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Cungui Cheng
- Key Laboratory of the Ministry
of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Xiaohui Xiao
- Key Laboratory of the Ministry
of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Gangguo Zhu
- Key Laboratory of the Ministry
of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
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