1
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Kim SB, Park G, Park ES, Maiti S, Kim J. Mn-Catalyzed Aerobic Oxidative α-Cyanation of Tertiary Amines Using Azo/Hydrazide Redox. J Org Chem 2024; 89:14543-14548. [PMID: 39298278 DOI: 10.1021/acs.joc.4c01609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2024]
Abstract
Azo compounds such as diethyl azodicarboxylate have been used in oxidative coupling reactions to generate iminium ions from tertiary amines. However, the requirement of stoichiometric amounts of azo compounds limits their large-scale applications. Herein, we present an aerobic oxidative α-cyanation of tertiary amines using catalytic amounts of an azo compound or hydrazine. The developed protocol provides a practical and ecofriendly route for α-cyanated tertiary amines, using molecular oxygen as the terminal oxidant.
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Affiliation(s)
- Su Been Kim
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Gayeong Park
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Eun Sun Park
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Santanu Maiti
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Jinho Kim
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
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2
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Saini MK, Prajapati K, Basak AK. Synthesis of Azonia Aromatic Heterocycles Bearing 6-6-6-5-6 Pentacyclic Core via Intramolecular [4 + 2]-Cycloaddition and Oxidative Aromatization Reaction Sequence in One Pot. J Org Chem 2024; 89:68-79. [PMID: 38111967 DOI: 10.1021/acs.joc.3c01506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
Cationic aza-heterocycle-fused compounds have gained wide applications in materials science, biological applications, and synthetic organic chemistry. In this report, synthesis of benzothiazolochromenopyridinium tetrafluoroborates, a novel molecular scaffold, bearing 6-6-6-5-6 pentacyclic core is described that proceeds via (i) piperidine-catalyzed Knoevenagel condensation between 2-propargyloxyarylaldehydes bearing internal alkynes and 2-benzothiazoleacetonitrile, (ii) intramolecular formal [4 + 2]-cycloaddition, and (iii) crucial molecular oxygen-mediated oxidative aromatization reaction sequence in one pot. These quaternary pyridinium salts are obtained at ambient temperature in good to high yields.
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Affiliation(s)
- Manoj Kumar Saini
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Karmdeo Prajapati
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Ashok K Basak
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
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3
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Kim SB, Maiti S, Park ES, Kim GY, Choun Y, Ahn SK, Kim JK, Kim J. One-Pot Synthesis of 1,3,4-Oxadiazines from Acylhydrazides and Allenoates. Molecules 2023; 28:molecules28093815. [PMID: 37175225 PMCID: PMC10180079 DOI: 10.3390/molecules28093815] [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: 03/30/2023] [Revised: 04/19/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
The framework of 1,3,4-oxadiazine is crucial for numerous bioactive molecules, but only a limited number of synthetic methods have been reported for its production. In 2015, Wang's group developed a 4-(dimethylamino)pyridine (DMAP)-catalyzed [2 + 4] cycloaddition of allenoates with N-acyldiazenes, which provided an atom-efficient route for 1,3,4-oxadiazines. However, the practicality of this method was limited by the instability of N-acyldiazenes as starting materials. Building upon our ongoing research about the aerobic oxidation of hydrazides and their synthetic applications, we hypothesized that aerobic oxidative cycloadditions using acylhydrazides instead of N-acyldiazenes may provide a more practical synthetic route for 1,3,4-oxadiazines. In this manuscript, we describe a one-pot synthetic protocol for 1,3,4-oxadiazines from acylhydrazides and allenoates. The developed one-pot protocol consists of aerobic oxidations of acylhydrazides into N-acyldiazenes using NaNO2 and HNO3, followed by the DMAP-catalyzed cycloaddition of allenoate with the generated N-acyldiazenes. A variety of 1,3,4-oxadiazines were produced in good to high yields. In addition, the practicality of the developed method was demonstrated by a gram-scale synthesis of 1,3,4-oxadiazine.
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Affiliation(s)
- Su Been Kim
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Santanu Maiti
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Eun Sun Park
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Ga Young Kim
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Yunji Choun
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Soon Kil Ahn
- Institute for New Drug Development, Division of Life Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Jae Kwang Kim
- Division of Life Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Jinho Kim
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea
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4
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Huang B, Chen Y, Zhang X, Yan M. Cross‐Dehydrogenative Coupling of Tetrahydroisoquinolines and 2‐Fluoro‐1,3‐benzodithiole‐1,1,3,3‐tetraoxide: A New Synthetic Approach to α‐Monofluoromethyl Tertiary Amines. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Bao‐qin Huang
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 China
| | - Yuan Chen
- State Key Laboratory of Medicinal Chemical Biology College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research Nankai University Tianjin 300353 China
| | - Xue‐jing Zhang
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 China
| | - Ming Yan
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 China
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5
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Singh P, Mritunjay. Progress of Dialkyl Azodicarboxylates in Organic Transformations. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100104] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Pushpinder Singh
- Department of Chemistry DAV University, Jalandhar Jalandhar-Pathankot National highway, Sarmastpur Jalandhar Punjab 144012 India
| | - Mritunjay
- Department of Chemistry DAV University, Jalandhar Jalandhar-Pathankot National highway, Sarmastpur Jalandhar Punjab 144012 India
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6
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Chen Y, Xia L, Chang Y, Ma W, Wang B. Application of N-Alkyl Amines as Versatile Building Blocks in Oxidative Coupling Reactions. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202009034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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7
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Rostoll-Berenguer J, Capella-Argente M, Blay G, Pedro JR, Vila C. Visible-light-accelerated amination of quinoxalin-2-ones and benzo[1,4]oxazin-2-ones with dialkyl azodicarboxylates under metal and photocatalyst-free conditions. Org Biomol Chem 2021; 19:6250-6255. [PMID: 34231626 DOI: 10.1039/d1ob01157j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A direct sp3 C-H amination of cyclic amines (dihydroquinoxalinones and dihydrobenzoxazinones) with dialkyl azo dicarboxylates accelerated by visible-light irradiation under metal and photocatalyst-free conditions is described. This protocol features very mild reaction conditions for the synthesis of aminal quinoxaline and benzoxazine derivatives with good to high yields (up to 99%). These aminal derivatives respresent versatile building blocks for the divergent synthesis of quinoxalin-2-one derivatives.
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Affiliation(s)
- Jaume Rostoll-Berenguer
- Departament de Química Orgànica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100 Burjassot, València, Spain.
| | - Murta Capella-Argente
- Departament de Química Orgànica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100 Burjassot, València, Spain.
| | - Gonzalo Blay
- Departament de Química Orgànica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100 Burjassot, València, Spain.
| | - José R Pedro
- Departament de Química Orgànica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100 Burjassot, València, Spain.
| | - Carlos Vila
- Departament de Química Orgànica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100 Burjassot, València, Spain.
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8
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Xu YW, Wang J, Wang G, Zhen L. Diethyl Azodicarboxylate-Promoted Oxidative [3 + 2] Cycloaddition for the Synthesis of Pyrrolo[2,1-a]isoquinolines. J Org Chem 2020; 86:91-102. [DOI: 10.1021/acs.joc.0c01567] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ya-Wen Xu
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, Jiangsu, China
| | - Jiankun Wang
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, Jiangsu, China
| | - Guangji Wang
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, Jiangsu, China
| | - Le Zhen
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, Jiangsu, China
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9
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Batra A, Singh KN. Recent Developments in Transition Metal‐Free Cross‐Dehydrogenative Coupling Reactions for C–C Bond Formation. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000785] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Aanchal Batra
- PG Department of Chemistry Mehr Chand Mahajan DAV College for Women Sec 36/A 160036 Chandigarh India
| | - Kamal Nain Singh
- Department of Chemistry and Centre of Advanced studies in Chemistry Panjab University 160014 Chandigarh India
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10
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Reichel M, Karaghiosoff K. Reagents for Selective Fluoromethylation: A Challenge in Organofluorine Chemistry. Angew Chem Int Ed Engl 2020; 59:12268-12281. [PMID: 32022357 PMCID: PMC7383490 DOI: 10.1002/anie.201913175] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/30/2020] [Indexed: 01/09/2023]
Abstract
The introduction of a monofluoromethyl moiety has undoubtedly become a very important area of research in recent years. Owing to the beneficial properties of organofluorine compounds, such as their metabolic stability, the incorporation of the CH2 F group as a bioisosteric substitute for various functional groups is an attractive strategy for the discovery of new pharmaceuticals. Furthermore, the monofluoromethyl unit is also widely used in agrochemistry, in pharmaceutical chemistry, and in fine chemicals. The problems associated with climate change and the growing need for environmentally friendly industrial processes mean that alternatives to the frequently used CFC and HFBC fluoromethylating agents (CH2 FCl and CH2 FBr) are urgently needed and also required by the Montreal Protocol. This has recently prompted many researchers to develop alternative fluoromethylation agents. This Minireview summarizes both the classical and new generation of fluoromethylating agents. Reagents that act via electrophilic, nucleophilic, and radical pathways are discussed, in addition to their precursors.
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Affiliation(s)
- Marco Reichel
- Department of ChemistryLudwig-Maximilian UniversityButenandstr. 5–1381377MunichGermany
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11
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Reichel M, Karaghiosoff K. Reagenzien für die selektive Fluormethylierung: Herausforderungen der Organofluorchemie. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913175] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Marco Reichel
- Department Chemie Ludwig-Maximilians-Universität Butenandtstr. 5–13 81377 München Deutschland
| | - Konstantin Karaghiosoff
- Department Chemie Ludwig-Maximilians-Universität Butenandtstr. 5–13 81377 München Deutschland
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12
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Usman M, Zhang XW, Wu D, Guan ZH, Liu WB. Application of dialkyl azodicarboxylate frameworks featuring multi-functional properties. Org Chem Front 2019. [DOI: 10.1039/c9qo00017h] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The application of dialkyl azodicarboxylates as versatile reagents in Mitsunobu, oxidation, electrophilic, amination and carbonylation reactions is reviewed.
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Affiliation(s)
- Muhammad Usman
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- Department of Chemistry & Materials Science
- Northwest University
- Xi'an 710127
- Shaanxi, China
| | - Xiao-Wen Zhang
- Engineering Research Center of Organosilicon Compounds & Materials
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
| | - Di Wu
- Engineering Research Center of Organosilicon Compounds & Materials
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
| | - Zheng-Hui Guan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- Department of Chemistry & Materials Science
- Northwest University
- Xi'an 710127
- Shaanxi, China
| | - Wen-Bo Liu
- Engineering Research Center of Organosilicon Compounds & Materials
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
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13
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Wang J, Sun Y, Jiang MH, Hu TY, Zhao YJ, Li X, Wang G, Hao K, Zhen L. Iminium Ion and N-Hydroxyimide as the Surrogate Components in DEAD-Promoted Oxidative Ugi Variant. J Org Chem 2018; 83:13121-13131. [PMID: 30351938 DOI: 10.1021/acs.joc.8b01868] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A practical metal-free oxidative Ugi-type three-component assembly has been achieved efficiently, employing a tertiary-amine-derived iminium ion as an imine surrogate, N-hydroxyimide as an acid surrogate, and DEAD as an oxidant. This dual-surrogate Ugi variant proceeded with a broad substrate scope and desired functional group tolerance, leading to a wide range of N-alkyl- N-acyl aminophthalimide and N-alkyl- N-acylaminosuccinimide derivatives in good isolated yields.
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Affiliation(s)
- Jiankun Wang
- Key Laboratory of Drug Metabolism and Pharmacokinetics , China Pharmaceutical University , 24 Tongjia Xiang , Nanjing 210009 , Jiangsu , China
| | - Yilin Sun
- Key Laboratory of Drug Metabolism and Pharmacokinetics , China Pharmaceutical University , 24 Tongjia Xiang , Nanjing 210009 , Jiangsu , China
| | - Mu-Han Jiang
- Key Laboratory of Drug Metabolism and Pharmacokinetics , China Pharmaceutical University , 24 Tongjia Xiang , Nanjing 210009 , Jiangsu , China
| | - Tian-Yu Hu
- Key Laboratory of Drug Metabolism and Pharmacokinetics , China Pharmaceutical University , 24 Tongjia Xiang , Nanjing 210009 , Jiangsu , China
| | - Yong-Jie Zhao
- Key Laboratory of Drug Metabolism and Pharmacokinetics , China Pharmaceutical University , 24 Tongjia Xiang , Nanjing 210009 , Jiangsu , China
| | - Xin Li
- Key Laboratory of Drug Metabolism and Pharmacokinetics , China Pharmaceutical University , 24 Tongjia Xiang , Nanjing 210009 , Jiangsu , China
| | - Guangji Wang
- Key Laboratory of Drug Metabolism and Pharmacokinetics , China Pharmaceutical University , 24 Tongjia Xiang , Nanjing 210009 , Jiangsu , China
| | - Kun Hao
- Key Laboratory of Drug Metabolism and Pharmacokinetics , China Pharmaceutical University , 24 Tongjia Xiang , Nanjing 210009 , Jiangsu , China
| | - Le Zhen
- Key Laboratory of Drug Metabolism and Pharmacokinetics , China Pharmaceutical University , 24 Tongjia Xiang , Nanjing 210009 , Jiangsu , China
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14
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Urban M, Franc M, Hofmanová M, Císařová I, Veselý J. The enantioselective addition of 1-fluoro-1-nitro(phenylsulfonyl)methane to isatin-derived ketimines. Org Biomol Chem 2018; 15:9071-9076. [PMID: 29083001 DOI: 10.1039/c7ob02408h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An asymmetric organocatalytic addition of fluorinated phenylsulfonylnitromethane to isatin-derived ketimines was developed. The reaction was efficiently catalyzed by a chiral tertiary amine, cinchonine. This methodology provides a new type of optically active compound with two adjacent quaternary carbon stereocenters in good yield (up to 96%), with moderate diastereoselectivity (up to 5.7 : 1 dr) and excellent enantioselectivity (up to 98/96% ee).
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Affiliation(s)
- M Urban
- Department of Organic Chemistry, Charles University, Hlavova 8, 12843 Prague, Czech Republic.
| | - M Franc
- Department of Organic Chemistry, Charles University, Hlavova 8, 12843 Prague, Czech Republic.
| | - M Hofmanová
- Department of Organic Chemistry, Charles University, Hlavova 8, 12843 Prague, Czech Republic.
| | - I Císařová
- Department of Inorganic Chemistry, Charles University, Hlavova 8, 12843 Prague, Czech Republic
| | - J Veselý
- Department of Organic Chemistry, Charles University, Hlavova 8, 12843 Prague, Czech Republic.
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15
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Kim MH, Kim J. Aerobic Oxidation of Alkyl 2-Phenylhydrazinecarboxylates Catalyzed by CuCl and DMAP. J Org Chem 2018; 83:1673-1679. [DOI: 10.1021/acs.joc.7b03119] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Min Hye Kim
- Department of Chemistry, and Research
Institute of Natural Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Jinho Kim
- Department of Chemistry, and Research
Institute of Natural Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
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16
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Wang J, Sun Y, Wang G, Zhen L. DEAD-Promoted Oxidative Ugi-Type Reaction Including an Unprecedented Ugi Amidation Assisted by Dicarboxylic Acids. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701323] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jiankun Wang
- Key Laboratory of Drug Metabolism and Pharmacokinetics; China Pharmaceutical University; 24 Tongjia Xiang 210009 Nanjing Jiangsu China
| | - Yilin Sun
- Key Laboratory of Drug Metabolism and Pharmacokinetics; China Pharmaceutical University; 24 Tongjia Xiang 210009 Nanjing Jiangsu China
| | - Guangji Wang
- Key Laboratory of Drug Metabolism and Pharmacokinetics; China Pharmaceutical University; 24 Tongjia Xiang 210009 Nanjing Jiangsu China
| | - Le Zhen
- Key Laboratory of Drug Metabolism and Pharmacokinetics; China Pharmaceutical University; 24 Tongjia Xiang 210009 Nanjing Jiangsu China
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17
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Kim YH, Gil MG, Kim DY. Diethyl Azodicarboxylate-promoted Oxidative Coupling Reaction of N
-Phenyl Tetrahydroisoquinoline with β-Keto Acids. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11307] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yong Hwan Kim
- Department of Chemistry; Soonchunhyang University; Chungnam 31538 Korea
| | - Min Gyun Gil
- Department of Chemistry; Soonchunhyang University; Chungnam 31538 Korea
| | - Dae Young Kim
- Department of Chemistry; Soonchunhyang University; Chungnam 31538 Korea
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18
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Sharma H, Mourya M, Guin D, Joshi YC, Dobhal MP, Basak AK. Diisopropyl azodicarboxylate mediated selective dehydrogenation of 2-amino-3-cyano 4 H -chromenes. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.03.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Vara BA, Johnston JN. Enantioselective Synthesis of β-Fluoro Amines via β-Amino α-Fluoro Nitroalkanes and a Traceless Activating Group Strategy. J Am Chem Soc 2016; 138:13794-13797. [PMID: 27749040 PMCID: PMC5453840 DOI: 10.1021/jacs.6b07731] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Preparation of a range of enantioenriched β-fluoro amines (α,β-disubstituted) is described in which the nitrogen and fluorine atoms are attached to sp3-hybridized carbons. The key finding is a chiral bifunctional Brønsted acid/base catalyst that can deliver β-amino-α-fluoro nitroalkanes with high enantio- and diastereoselection. A denitration step renders the nitro group "traceless" and delivers secondary, tertiary, or vinyl alkyl fluorides embedded within a vicinal fluoro amine functional group. A synthesis of each possible stereoisomer of a β-fluoro lanicemine illustrates the potential ease with which fluorinated small molecules relevant to neuroscience drug development can be prepared in a stereochemically comprehensive manner.
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Affiliation(s)
- Brandon A. Vara
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235-1822
| | - Jeffrey N. Johnston
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235-1822
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20
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Zhang Z, Puente Á, Wang F, Rahm M, Mei Y, Mayr H, Prakash GKS. The Nucleophilicity of Persistent α-Monofluoromethide Anions. Angew Chem Int Ed Engl 2016; 55:12845-9. [PMID: 27628935 DOI: 10.1002/anie.201605616] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 07/15/2016] [Indexed: 11/06/2022]
Abstract
α-Fluorocarbanions are key intermediates in nucleophilic fluoroalkylation reactions. Although frequently discussed, the origin of the fluorine effect on the reactivity of α-fluorinated CH acids has remained largely unexplored. We have now investigated the kinetics of a series of reactions of α-substituted carbanions with reference electrophiles to elucidate the effects of α-F, α-Cl, and α-OMe substituents on the nucleophilic reactivities of carbanions.
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Affiliation(s)
- Zhe Zhang
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, CA, 90089-1661, USA
| | - Ángel Puente
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13 (Haus F), 81377, München, Germany
| | - Fang Wang
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, CA, 90089-1661, USA
| | - Martin Rahm
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, CA, 90089-1661, USA.,Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, NY, 14853-1301, USA
| | - Yuncai Mei
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, CA, 90089-1661, USA
| | - Herbert Mayr
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13 (Haus F), 81377, München, Germany.
| | - G K Surya Prakash
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, CA, 90089-1661, USA.
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21
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Zhang Z, Puente Á, Wang F, Rahm M, Mei Y, Mayr H, Prakash GKS. The Nucleophilicity of Persistent α-Monofluoromethide Anions. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605616] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zhe Zhang
- Loker Hydrocarbon Research Institute, Department of Chemistry; University of Southern California; Los Angeles CA 90089-1661 USA
| | - Ángel Puente
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13 (Haus F) 81377 München Germany
| | - Fang Wang
- Loker Hydrocarbon Research Institute, Department of Chemistry; University of Southern California; Los Angeles CA 90089-1661 USA
| | - Martin Rahm
- Loker Hydrocarbon Research Institute, Department of Chemistry; University of Southern California; Los Angeles CA 90089-1661 USA
- Department of Chemistry and Chemical Biology; Baker Laboratory; Cornell University; Ithaca NY 14853-1301 USA
| | - Yuncai Mei
- Loker Hydrocarbon Research Institute, Department of Chemistry; University of Southern California; Los Angeles CA 90089-1661 USA
| | - Herbert Mayr
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13 (Haus F) 81377 München Germany
| | - G. K. Surya Prakash
- Loker Hydrocarbon Research Institute, Department of Chemistry; University of Southern California; Los Angeles CA 90089-1661 USA
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22
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Suga T, Iizuka S, Akiyama T. Versatile and highly efficient oxidative C(sp3)–H bond functionalization of tetrahydroisoquinoline promoted by bifunctional diethyl azodicarboxylate (DEAD): scope and mechanistic insights. Org Chem Front 2016. [DOI: 10.1039/c6qo00249h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The oxidant–base bifunctionality of DEAD realized highly reliable cross dehydrogenative coupling of tetrahydroisoquinoline derivatives via aminal intermediates.
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Affiliation(s)
- Takuya Suga
- Department of Chemistry
- Gakushuin University
- Tokyo 171-8588
- Japan
| | - Sunao Iizuka
- Department of Chemistry
- Gakushuin University
- Tokyo 171-8588
- Japan
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23
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Liu C, Yuan J, Gao M, Tang S, Li W, Shi R, Lei A. Oxidative Coupling between Two Hydrocarbons: An Update of Recent C–H Functionalizations. Chem Rev 2015; 115:12138-204. [DOI: 10.1021/cr500431s] [Citation(s) in RCA: 836] [Impact Index Per Article: 92.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Chao Liu
- College
of Chemistry and Molecular Sciences, Institute for Advanced Studies
(IAS), Wuhan University, Wuhan 430072, People’s Republic of China
| | - Jiwen Yuan
- College
of Chemistry and Molecular Sciences, Institute for Advanced Studies
(IAS), Wuhan University, Wuhan 430072, People’s Republic of China
| | - Meng Gao
- National
Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, People’s Republic of China
| | - Shan Tang
- College
of Chemistry and Molecular Sciences, Institute for Advanced Studies
(IAS), Wuhan University, Wuhan 430072, People’s Republic of China
| | - Wu Li
- College
of Chemistry and Molecular Sciences, Institute for Advanced Studies
(IAS), Wuhan University, Wuhan 430072, People’s Republic of China
| | - Renyi Shi
- College
of Chemistry and Molecular Sciences, Institute for Advanced Studies
(IAS), Wuhan University, Wuhan 430072, People’s Republic of China
| | - Aiwen Lei
- College
of Chemistry and Molecular Sciences, Institute for Advanced Studies
(IAS), Wuhan University, Wuhan 430072, People’s Republic of China
- National
Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, People’s Republic of China
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24
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Narayan R, Matcha K, Antonchick AP. Metal-Free Oxidative C-C Bond Formation through C-H Bond Functionalization. Chemistry 2015; 21:14678-93. [PMID: 26239615 DOI: 10.1002/chem.201502005] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The formation of C-C bonds embodies the core of organic chemistry because of its fundamental application in generation of molecular diversity and complexity. C-C bond-forming reactions are well-known challenges. To achieve this goal through direct functionalization of C-H bonds in both of the coupling partners represents the state-of-the-art in organic synthesis. Oxidative C-C bond formation obviates the need for prefunctionalization of both substrates. This Minireview is dedicated to the field of C-C bond-forming reactions through direct C-H bond functionalization under completely metal-free oxidative conditions. Selected important developments in this area have been summarized with representative examples and discussions on their reaction mechanisms.
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Affiliation(s)
- Rishikesh Narayan
- Abteilung Chemische Biologie, Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn Strasse 11, 44227 Dortmund (Germany)
| | - Kiran Matcha
- Abteilung Chemische Biologie, Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn Strasse 11, 44227 Dortmund (Germany).,Present Address: API Small Molecule Process Research and Development, Janssen Pharmaceutica NV, Turnhotsweg 30, 2340 Beerse (Belgium)
| | - Andrey P Antonchick
- Abteilung Chemische Biologie, Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn Strasse 11, 44227 Dortmund (Germany). .,Fakultät Chemie und Chemische Biologie, Technische Universität Dortmund, Otto-Hahn Strasse 6, 44221 Dortmund (Germany).
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25
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Liu L, Du L, Zhang-Negrerie D, Du Y. NIS-mediated intramolecular oxidative α-functionalization of tertiary amines: transition metal-free synthesis of 1,2-dihydro-(4H)-3,1-benzoxazin-4-one derivatives. RSC Adv 2015. [DOI: 10.1039/c5ra03882k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
A novel method for direct α-functionalization of tertiary amines via NIS-mediated oxidative C–O bond formation, where NIS serves as both an oxidant and an iodination reagent, has been developed.
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Affiliation(s)
- Le Liu
- School of Pharmaceutical Science and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Liang Du
- School of Pharmaceutical Science and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Daisy Zhang-Negrerie
- School of Pharmaceutical Science and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Yunfei Du
- School of Pharmaceutical Science and Technology
- Tianjin University
- Tianjin 300072
- China
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26
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Ni C, Hu M, Hu J. Good partnership between sulfur and fluorine: sulfur-based fluorination and fluoroalkylation reagents for organic synthesis. Chem Rev 2014; 115:765-825. [PMID: 25144886 DOI: 10.1021/cr5002386] [Citation(s) in RCA: 936] [Impact Index Per Article: 93.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Ling-Ling Road, Shanghai City, Shanghai 200032, China
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27
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Zhirov AM, Aksenov AV. Azodicarboxylates: synthesis and functionalization of organic compounds. RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n06abeh004419] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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