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Adhikari P, Bhattacharyya D, Deori K, Sarmah BK, Das A. Chemo- and Regioselective Catalytic Cross-Coupling Reaction of Ketones for the Synthesis of β, γ-Disubstituted β, γ-Unsaturated Ketones. Chemistry 2023:e202303206. [PMID: 38140820 DOI: 10.1002/chem.202303206] [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: 09/30/2023] [Revised: 12/09/2023] [Accepted: 12/21/2023] [Indexed: 12/24/2023]
Abstract
C-C bond forming reaction of ketone with aldehyde is well-studied for the synthesis of α, β-unsaturated ketones, however, the reaction with two different ketones to unsaturated carbonyl compound has not yet been systematically studied. Probably due to the relatively low reactivity of ketones as electrophiles (aldol acceptors), its propensity for retro-aldol reaction. The reactions often suffer from unsatisfactory chemoselectivity (self- vs. crossed aldol products) and regioselectivity (thermodynamic vs. kinetic enolate). In this quest, we report here for the first time selective cross-coupling reaction of ketones to β-branched β, γ-unsaturated ketones by using ruthenium catalysis. Interestingly, single crossed aldol condensation products are formed even in reactions where a mixture of products is possible. Reaction is highly chemoselective, regioselective and produces H2 O as the only byproducts making the protocol environmentally benign. Method is compatible with a wide variety of sensitive functional group and applicable for even problematic aliphatic ketones as substrates. Notably, acetone was found as a three-carbon feedstock for the syntheses of simple β, γ-unsaturated ketone compounds. The process can further be extended to the gram-scale reaction and late-stage functionalization of natural products. With the help of DFT calculations, several control experiments, and deuterium-labeling experiments, the mechanistic finding demonstrated that initial aldol-condensation of ketones to a β, β-disubstituted α, β-unsaturated ketone, which further isomerizes to a β, γ- unsaturated ketone via η3 -allyl ruthenium complex.
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Affiliation(s)
- Priyanka Adhikari
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, India, 781039
| | - Dipanjan Bhattacharyya
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, India, 781039
| | - Kritartha Deori
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, India, 781039
| | - Bikash Kumar Sarmah
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, India, 781039
- Department of Chemistry, Sonari College, Assam, India
| | - Animesh Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, India, 781039
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2
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Voronin VV, Polynski MV, Ledovskaya MS. 1,2,4-Triazines and Calcium Carbide in the Catalyst-Free Synthesis of 2,3,6-Trisubstituted Pyridines and Their D-, 13 C-, and Doubly D 2 - 13 C 2 -Labeled Analogues. Chem Asian J 2023; 18:e202300781. [PMID: 37843978 DOI: 10.1002/asia.202300781] [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: 09/08/2023] [Revised: 10/12/2023] [Accepted: 10/16/2023] [Indexed: 10/18/2023]
Abstract
A novel synthetic approach to 2,3,6-trisubstituted pyridines, their 4,5-dideuterated derivatives, 4,5-13 C2 - and doubly-labeled D2 -13 C2 -pyridines has been developed using catalyst-free [4+2] cycloaddition of 1,2,4-triazines and in situ generated acetylene or labeled acetylene. Calcium carbide and water or deuterium oxide were used for the in situ generation of acetylene and dideuteroacetylene. Calcium carbide-13 C2 in the mixture with water or deuterium oxide was applied as 13 C2 -acetylene and D2 -13 C2 -acetylene source.
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Affiliation(s)
- Vladimir V Voronin
- Saint Petersburg State University, Institute of Chemistry, Universitetsky Prospect 26, Saint Petersburg, 198504, Russia
| | - Mikhail V Polynski
- Saint Petersburg State University, Institute of Chemistry, Universitetsky Prospect 26, Saint Petersburg, 198504, Russia
- Current address: National University of Singapore, Department of Chemical and Biomolecular Engineering, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Maria S Ledovskaya
- Saint Petersburg State University, Institute of Chemistry, Universitetsky Prospect 26, Saint Petersburg, 198504, Russia
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3
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Ramos-Martín M, Ríos-Lombardía N, González-Sabín J, García-Garrido SE, Concellón C, Presa Soto A, Del Amo V, García-Álvarez J. Fe III -Based Eutectic Mixtures as Multi-task and Reusable Reaction Media for Efficient and Selective Conversion of Alkynes into Carbonyl Compounds. Chemistry 2023; 29:e202301736. [PMID: 37439586 DOI: 10.1002/chem.202301736] [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: 05/31/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 07/14/2023]
Abstract
An efficient, simple and general protocol for the selective hydration of terminal alkynes into the corresponding methyl ketones has been developed by using a cheap, easy-to-synthesise and sustainable FeIII -based eutectic mixture [FeCl3 ⋅ 6H2 O/Gly (3 : 1)] as both promoter and solvent for the hydration reaction, working: i) under mild (45 °C) and bench-type reaction conditions (air); and ii) in the absence of ligands, co-catalysts, co-solvents or toxic, non-abundant and expensive noble transition metals (Au, Ru, Pd). When the final methyl ketones are solid/insoluble in the eutectic mixture, the hydration reaction takes place in 30 min, and the obtained methyl ketones can be isolated by simply decanting the liquid FeIII -DES, allowing the direct isolation of the desired ketones without VOC solvents. By using this straightforward and simple isolation protocol, we have been able to recycle the FeIII -based eutectic mixture system up to eight consecutive times. Furthermore, the FeIII -eutectic mixture is able to promote the selective and efficient formal oxidation of internal alkynes into 1,2-diketones, with the possibility of recycling this system up to three consecutive times. Preliminary investigations into a possible mechanism for the oxidation of the internal alkynes seem to indicate that it proceeds through the formation of the corresponding methyl ketones and α-chloroketones.
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Affiliation(s)
- Marina Ramos-Martín
- Laboratorio de Química Sintética Sostenible (QuimSinSos), Departamento de Química Orgánica e Inorgánica, (IUQOEM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad de Oviedo, E33071, Oviedo, Spain)
| | - Nicolas Ríos-Lombardía
- Laboratorio de Química Sintética Sostenible (QuimSinSos), Departamento de Química Orgánica e Inorgánica, (IUQOEM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad de Oviedo, E33071, Oviedo, Spain)
- Entrechem SL, Vivero Ciencias de la Salud, Colegio Santo Domingo de Guzmán s/n, 33011, Oviedo, Spain
| | - Javier González-Sabín
- Entrechem SL, Vivero Ciencias de la Salud, Colegio Santo Domingo de Guzmán s/n, 33011, Oviedo, Spain
| | - Sergio E García-Garrido
- Laboratorio de Química Sintética Sostenible (QuimSinSos), Departamento de Química Orgánica e Inorgánica, (IUQOEM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad de Oviedo, E33071, Oviedo, Spain)
| | - Carmen Concellón
- Laboratorio de Química Sintética Sostenible (QuimSinSos), Departamento de Química Orgánica e Inorgánica, (IUQOEM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad de Oviedo, E33071, Oviedo, Spain)
| | - Alejandro Presa Soto
- Laboratorio de Química Sintética Sostenible (QuimSinSos), Departamento de Química Orgánica e Inorgánica, (IUQOEM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad de Oviedo, E33071, Oviedo, Spain)
| | - Vicente Del Amo
- Laboratorio de Química Sintética Sostenible (QuimSinSos), Departamento de Química Orgánica e Inorgánica, (IUQOEM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad de Oviedo, E33071, Oviedo, Spain)
| | - Joaquín García-Álvarez
- Laboratorio de Química Sintética Sostenible (QuimSinSos), Departamento de Química Orgánica e Inorgánica, (IUQOEM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad de Oviedo, E33071, Oviedo, Spain)
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4
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Zeng J, Li J, Huang B, Li J, Cai M. A practical access to 1,2-dicarbonyls via oxidation of alkynes catalyzed by gold(I) immobilized on MCM-41. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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5
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Wehrle R, Rosen A, Nguyen TV, Koons K, Jump E, Bullard M, Wehrle N, Stockfish A, Hare PM, Atesin A, Ateşin TA, Ma L. Investigation on the Synthesis, Application and Structural Features of Heteroaryl 1,2-Diketones. ACS OMEGA 2022; 7:26650-26660. [PMID: 35936472 PMCID: PMC9352158 DOI: 10.1021/acsomega.2c02914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
A set of unsymmetrical heteroaryl 1,2-diketones were synthesized by a heteroarylation/oxidation sequence with up to 65% isolated yields. Palladium catalyst XPhos Pd G4 and SeO2 were the key reagents used in this methodology, and microwave irradiation was utilized to facilitate an efficient and ecofriendly process. The application of heteroaryl 1,2-diketones is demonstrated through the synthesis of an unsymmetrical 2-phenyl-3-(pyridin-3-yl)quinoxaline (5a) from 1-phenyl-2-(pyridin-3-yl)ethane-1,2-dione (4a). The lowest energy conformations of 4a and 5a were located using Density Functional Theory (DFT) at the M06-2X/def2-TZVP level of theory. Two lowest energy conformations of 4a differ with respect to the position of the N atom in the pyridyl ring and 0.27 kcal/mol energy difference between them corresponds to 60.4 and 39.6% at 50 °C in toluene. Four lowest energy conformations for 5a have the energy differences of 0.01, 0.03 and 0.07 kcal/mol that corresponds to 26.0, 25.7, 24.9 and 23.4%, respectively. A comparison of 4a and 5a to the less hindered analogs (oxalyl chloride and oxalic acid) is used to investigate the structural features and bonding using Natural Bond Orbital (NBO) analysis.
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Affiliation(s)
- Robert
J. Wehrle
- Department
of Chemistry & Biochemistry, Northern
Kentucky University, Nunn Drive, Highland Heights, Kentucky 41099, United
States
| | - Alexander Rosen
- Department
of Chemistry & Biochemistry, Northern
Kentucky University, Nunn Drive, Highland Heights, Kentucky 41099, United
States
| | - Thu Vu Nguyen
- Department
of Chemistry & Biochemistry, Northern
Kentucky University, Nunn Drive, Highland Heights, Kentucky 41099, United
States
| | - Kalyn Koons
- Department
of Chemistry & Biochemistry, Northern
Kentucky University, Nunn Drive, Highland Heights, Kentucky 41099, United
States
| | - Eric Jump
- Department
of Chemistry & Biochemistry, Northern
Kentucky University, Nunn Drive, Highland Heights, Kentucky 41099, United
States
| | - Mason Bullard
- Department
of Chemistry & Biochemistry, Northern
Kentucky University, Nunn Drive, Highland Heights, Kentucky 41099, United
States
| | - Natalie Wehrle
- Department
of Chemistry & Biochemistry, Northern
Kentucky University, Nunn Drive, Highland Heights, Kentucky 41099, United
States
| | - Adam Stockfish
- Department
of Chemistry & Biochemistry, Northern
Kentucky University, Nunn Drive, Highland Heights, Kentucky 41099, United
States
| | - Patrick M. Hare
- Department
of Chemistry & Biochemistry, Northern
Kentucky University, Nunn Drive, Highland Heights, Kentucky 41099, United
States
| | - Abdurrahman Atesin
- Department
of Chemistry, The University of Texas Rio
Grande Valley, Edinburg, Texas 78541, United
States
| | - Tülay A. Ateşin
- Department
of Chemistry, The University of Texas Rio
Grande Valley, Edinburg, Texas 78541, United
States
| | - Lili Ma
- Department
of Chemistry & Biochemistry, Northern
Kentucky University, Nunn Drive, Highland Heights, Kentucky 41099, United
States
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6
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Sharma R, Mondal A, Samanta A, Biswas N, Das B, Srimani D. Well‐Defined Ni−SNS Complex Catalysed Borrowing Hydrogenative α‐Alkylation of Ketones and Dehydrogenative Synthesis of Quinolines. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200209] [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)
- Rahul Sharma
- Department of Chemistry Indian Institute of Technology-Guwahati Kamrup Assam 781039 India
| | - Avijit Mondal
- Department of Chemistry Indian Institute of Technology-Guwahati Kamrup Assam 781039 India
| | - Arup Samanta
- Department of Chemistry Indian Institute of Technology-Guwahati Kamrup Assam 781039 India
| | - Nandita Biswas
- Department of Chemistry Indian Institute of Technology-Guwahati Kamrup Assam 781039 India
| | - Babulal Das
- Department of Chemistry Indian Institute of Technology-Guwahati Kamrup Assam 781039 India
| | - Dipankar Srimani
- Department of Chemistry Indian Institute of Technology-Guwahati Kamrup Assam 781039 India
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7
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Wang Q, Zhu B, Zhang X, Shi G, Liu J, Xu Q. Direct construction of quinoxaline derivatives from vicinal diols and o‐nitroanilines via NaOH‐mediated intermolecular cascade redox and annulation reactions. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200056] [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)
- Qi Wang
- Yangzhou University School of Chemistry and Chemical Engineering 225002 Yangzhou CHINA
| | - Boran Zhu
- Yangzhou University School of Chemistry and Chemical Engineering 225002 Yangzhou CHINA
| | - Xiaolan Zhang
- Yangzhou University School of Chemistry and Chemical Engineering 225002 Yangzhou CHINA
| | - Guojun Shi
- Yangzhou University School of Chemistry and Chemical Engineering 225002 Yangzhou CHINA
| | - Jianping Liu
- Wenzhou University College of Chemistry and Materials Engineering 325035 Wenzhou CHINA
| | - Qing Xu
- Wenzhou University College of Chemistry and Materials Engineering Wenzhou University Town 325035 Wenzhou CHINA
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8
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Liang JY, Wang YJ, Zou Q, Zhang Y, Chen Z. Gold Catalyzed Oxidation of Vinyl Acetylenes into Vinyl & Divinyl Diketones and its Synthetic Application. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Sarmiento JT, Cárcel M, Ramírez de Arellano C, Varea T, Asensio G, Olmos A. Straightforward Synthesis of α-Chloromethylketimines Catalyzed by Gold(I). A Clean Way to Building Blocks. J Org Chem 2022; 87:3114-3122. [PMID: 35191705 PMCID: PMC10391627 DOI: 10.1021/acs.joc.1c02877] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
α-Chloromethylketimines have been obtained through a gold-catalyzed hydroamination of aromatic and aliphatic 1-chloroalkynes with aromatic amines by using equimolar amounts of both reagents. This procedure has allowed the preparation and spectroscopic characterization of α-chloromethylketimines for the first time with a high degree of purity, complete conversion, and atom economy. The synthetic usefulness of the methodology has been demonstrated with the preparation of β-chloroamines and indoles.
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Affiliation(s)
- Jeymy T Sarmiento
- Departamento de Química Orgánica, Universidad de Valencia, Av. Vicente Andrés Estellés S/N, 46100 Burjassot, Spain
| | - María Cárcel
- Departamento de Química Orgánica, Universidad de Valencia, Av. Vicente Andrés Estellés S/N, 46100 Burjassot, Spain
| | - Carmen Ramírez de Arellano
- Departamento de Química Orgánica, Universidad de Valencia, Av. Vicente Andrés Estellés S/N, 46100 Burjassot, Spain
| | - Teresa Varea
- Departamento de Química Orgánica, Universidad de Valencia, Av. Vicente Andrés Estellés S/N, 46100 Burjassot, Spain
| | - Gregorio Asensio
- Departamento de Química Orgánica, Universidad de Valencia, Av. Vicente Andrés Estellés S/N, 46100 Burjassot, Spain
| | - Andrea Olmos
- Departamento de Química Orgánica, Universidad de Valencia, Av. Vicente Andrés Estellés S/N, 46100 Burjassot, Spain
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Kong L, Meng J, Tian W, Liu J, Hu X, Jiang ZH, Zhang W, Li Y, Bai LP. I 2-Catalyzed Carbonylation of α-Methylene Ketones to Synthesize 1,2-Diaryl Diketones and Antiviral Quinoxalines in One Pot. ACS OMEGA 2022; 7:1380-1394. [PMID: 35036799 PMCID: PMC8757360 DOI: 10.1021/acsomega.1c06017] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 12/10/2021] [Indexed: 05/03/2023]
Abstract
An efficient approach for the synthesis of 1,2-diaryl diketones was developed from readily available α-methylene ketones by catalysis of I2. In the same oxidation system, a novel one-pot procedure was established for the construction of antiviral and anticancer quinoxalines. The reactions proceeded well with a wide variety of substrates and good functional group tolerance, affording desired compounds in moderate to excellent yields. Quinoxalines 4ca and 4ad inhibited viral entry of SARS-CoV-2 spike pseudoviruses into HEK-293T-ACE2h host cells as dual blockers of both human ACE2 receptor and viral spike RBD with IC50 values of 19.70 and 21.28 μM, respectively. In addition, cytotoxic evaluation revealed that 4aa, 4ba, 4ia, and 4ab suppressed four cancer cells with IC50 values ranging from 6.25 to 28.55 μM.
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Affiliation(s)
- Lingkai Kong
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
- School
of Chemistry and Chemical Engineering, Linyi
University, Linyi, Shandong 276000, People’s Republic of China
| | - Jieru Meng
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
| | - Wenyue Tian
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
| | - Jiazheng Liu
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
| | - Xueping Hu
- School
of Chemistry and Chemical Engineering, Linyi
University, Linyi, Shandong 276000, People’s Republic of China
| | - Zhi-Hong Jiang
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
| | - Wei Zhang
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
| | - Yanzhong Li
- School
of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Li-Ping Bai
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
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11
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Zhang X, Shi H, Ji C, Wang J, Jiang L. Computational exploration for possible reaction pathways, regioselectivity, and influence of substrate in gold-catalyzed cycloaddition of cyanamides with enynamides. RSC Adv 2022; 12:22939-22945. [PMID: 36105958 PMCID: PMC9377310 DOI: 10.1039/d2ra02682a] [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: 04/27/2022] [Accepted: 07/18/2022] [Indexed: 11/30/2022] Open
Abstract
The current work focuses on the DFT calculation of the rational mechanism and catalytic activity of the gold(i)-catalyzed isotetradehydro-Diels–Alder cycloaddition of cyanamides and enamides to substituted 2,6-diaminopyridines. IPrAuCl is used as a model catalyst to catalyze cyanamide and enynamide reactants with different substituents in DCM as a research system. DFT data indicates that the catalytic cycle starts from the triple bond coordination between the catalyst's gold cation and the enamide to obtain the gold π-complex, and the cyanamide attacks the alkynyl carbon atom from different directions to generate two reaction channels of five-membered and six-membered heterocycles, respectively. The calculation results show that the 2,6-diaminopyridine compounds produced by this catalytic reaction have lower activation energy and higher reactivity, that is, the pyridine skeleton structure can be easily obtained under mild reaction conditions. At the same time, electron-withdrawing substituents in the reactants are more helpful for the reaction. In addition to being in good agreement with the experimental data, the calculated results also provide an important contribution to the further understanding of the mechanism of such reactions. The current work focuses on the DFT calculation of the rational mechanism and catalytic activity of the gold(i)-catalyzed isotetradehydro-Diels–Alder cycloaddition of cyanamides and enamides to substituted 2,6-diaminopyridines.![]()
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Affiliation(s)
- Xinghui Zhang
- School of Chemical Engineering, Lanzhou University of Arts and Science, Lanzhou 730010, China
| | - Haixiong Shi
- School of Chemical Engineering, Lanzhou University of Arts and Science, Lanzhou 730010, China
| | - Caihong Ji
- School of Chemical Engineering, Lanzhou University of Arts and Science, Lanzhou 730010, China
| | - Jianyi Wang
- School of Chemical Engineering, Lanzhou University of Arts and Science, Lanzhou 730010, China
| | - Liping Jiang
- School of Chemical Engineering, Lanzhou University of Arts and Science, Lanzhou 730010, China
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12
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Liao S, Xu H, Yang B, Wang J, Zhou X, Lin X, Liu Y. Gold-catalyzed oxidation of terminal alkynes to glyoxals and their reactions with 2-phenylimidazo[1,2- a]pyridines: one-pot synthesis of 1,2-diones. Org Biomol Chem 2021; 19:8735-8739. [PMID: 34476433 DOI: 10.1039/d1ob01507a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel one-pot protocol for the convenient and efficient synthesis of (2-phenylimidazo[1,2-a]pyridin-3-yl)alkane-1,2-diones (3) in good yields (32-88%) from 2-phenylimidazo[1,2-a]pyridines (1) and terminal alkynes (2) has been established with a wide range of substrate scope. A tandem reaction sequence containing gold-catalyzed double oxidations of terminal alkynes to generate glyoxals, nucleophilic addition of 2-phenylimidazo[1,2-a]pyridines to glyoxals to yield α-hydroxyl ketones, and oxygenation of the α-hydroxyl ketones to afford the final products 3 under air atmosphere is involved in this method. Simple operation, mild reaction conditions, and widely available substrates make this strategy more affordable.
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Affiliation(s)
- Shengrong Liao
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Research Center for Marine Microbes, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China. .,Sanya Institute of Oceanology, SCSIO, Yazhou Scientific Bay, Sanya 572000, China.,Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 511458, China
| | - Huayan Xu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Research Center for Marine Microbes, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China.
| | - Bin Yang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Research Center for Marine Microbes, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China.
| | - Junfeng Wang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Research Center for Marine Microbes, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China. .,Sanya Institute of Oceanology, SCSIO, Yazhou Scientific Bay, Sanya 572000, China
| | - Xuefeng Zhou
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Research Center for Marine Microbes, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China. .,Sanya Institute of Oceanology, SCSIO, Yazhou Scientific Bay, Sanya 572000, China
| | - Xiuping Lin
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Research Center for Marine Microbes, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China.
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Research Center for Marine Microbes, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China. .,Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 511458, China
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13
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Mei X, Hu W, Gao K, Gao H, Wang C, Qian G, Rong Z. Synthesis of 1,2-diketones by mercury-catalyzed alkyne oxidation. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1946082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Xiaochuan Mei
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, PR China
| | - Weican Hu
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, PR China
| | - Kexin Gao
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, PR China
| | - Haotian Gao
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, PR China
| | - Chaoyang Wang
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, PR China
| | - Guoying Qian
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, PR China
| | - Zhouting Rong
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, PR China
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14
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Asressu KH, Chan CK, Wang CC. TMSOTf-catalyzed synthesis of trisubstituted imidazoles using hexamethyldisilazane as a nitrogen source under neat and microwave irradiation conditions. RSC Adv 2021; 11:28061-28071. [PMID: 35480777 PMCID: PMC9039414 DOI: 10.1039/d1ra05802a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 08/12/2021] [Indexed: 12/15/2022] Open
Abstract
In the process of drug discovery and development, an efficient and expedient synthetic method for imidazole-based small molecules from commercially available and cheap starting materials has great significance. Herein, we developed a TMSOTf-catalyzed synthesis of trisubstituted imidazoles through the reaction of 1,2-diketones and aldehydes using hexamethyldisilazane as a nitrogen source under microwave heating and solvent-free conditions. The chemical structures of representative trisubstituted imidazoles were confirmed using X-ray single-crystal diffraction analysis. This synthetic method has several advantages including the involvement of mild Lewis acid, being metal- and additive-free, wide substrate scope with good to excellent yields and short reaction time. Furthermore, we demonstrate the application of the methodology in the synthesis of biologically active imidazole-based drugs. Trisubstituted imidazoles are synthesized efficiently from the readily available 1,2-diketones and aldehydes using hexamethyldisilazane as a new and stable nitrogen source under TMSOTf-catalysis system, microwave heating and solvent-free conditions.![]()
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Affiliation(s)
| | - Chieh-Kai Chan
- Institute of Chemistry, Academia Sinica Taipei 115 Taiwan
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15
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Zhu TT, Tao YT, Sun Y, Wang X, Zhang XW, Chai JL, Han J, Zhao XL, Chen XD. Lanthanide complexes based on an anthraquinone derivative ligand and applications as photocatalysts for visible-light driving photooxidation reactions. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Kumar A, Sridharan V. Transition Metal‐Catalyzed Synthesis of 1,2‐Diketones: An Overview. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100307] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Atul Kumar
- Department of Chemistry and Chemical Sciences Central University of Jammu Rahya-Suchani (Bagla), District-Samba Jammu-181143, J&K India
| | - Vellaisamy Sridharan
- Department of Chemistry and Chemical Sciences Central University of Jammu Rahya-Suchani (Bagla), District-Samba Jammu-181143, J&K India
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17
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Sutar SM, Prabhala P, Savanur HM, Kalkhambkar RG, Aridoss G, Laali KK. Copper‐Catalyzed Coupling of Arylethynes and Aryltriazenes to Access Libraries of 1,2‐Diketones and Their Efficacy in Synthesis of Triaryloxazoles, Imidazoles and Diaryl‐Diazepines. ChemistrySelect 2021. [DOI: 10.1002/slct.202100505] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Suraj M. Sutar
- Department of Chemistry Karnatak University's Karnatak Science College Dharwad Karnatak 580001 India
| | - Pavankumar Prabhala
- Department of Chemistry Karnatak University's Karnatak Science College Dharwad Karnatak 580001 India
| | - Hemantkumar M. Savanur
- Department of Studies and Research in Chemistry P. C. Jabin Science College Hubli, Karnatak 580021 India
| | - Rajesh G. Kalkhambkar
- Department of Chemistry Karnatak University's Karnatak Science College Dharwad Karnatak 580001 India
| | - Gopalakrishnan Aridoss
- Anygen Co., Ltd., Gwangju Technopark Cheomdan Gwagi-ro, Buk-gu Gwangju 61008 South Korea
| | - Kenneth K. Laali
- Department of Chemistry University of North Florida, 1, UNF Drive Jacksonville, Florida 32224 USA
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18
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Chand S, Pandey AK, Singh R, Singh KN. Visible-Light-Induced Photocatalytic Oxidative Decarboxylation of Cinnamic Acids to 1,2-Diketones. J Org Chem 2021; 86:6486-6493. [PMID: 33851837 DOI: 10.1021/acs.joc.1c00322] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A concerted metallophotoredox catalysis has been realized for the efficient decarboxylative functionalization of α,β-unsaturated carboxylic acids with aryl iodides in the presence of perylene bisimide dye to afford 1,2-diketones.
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Affiliation(s)
- Shiv Chand
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Anand Kumar Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Rahul Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Krishna Nand Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
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19
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Shcherbakov NV, Dar’in DV, Kukushkin VY, Dubovtsev AY. Hetero-Tetradehydro-Diels–Alder Cycloaddition of Enynamides and Cyanamides: Gold-Catalyzed Generation of Diversely Substituted 2,6-Diaminopyridines. J Org Chem 2021; 86:7218-7228. [DOI: 10.1021/acs.joc.1c00558] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Nikolay V. Shcherbakov
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Dmitry V. Dar’in
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Vadim Yu. Kukushkin
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
- South Ural State University, 454080 Chelyabinsk, Russian Federation
| | - Alexey Yu. Dubovtsev
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
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20
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Hu W, Huang B, Niu B, Cai M. Recyclable heterogeneous gold(I)-catalyzed oxidation of internal acylalkynes: Practical access to vicinal tricarbonyls. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152953] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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21
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Zheng Z, Ma X, Cheng X, Zhao K, Gutman K, Li T, Zhang L. Homogeneous Gold-Catalyzed Oxidation Reactions. Chem Rev 2021; 121:8979-9038. [DOI: 10.1021/acs.chemrev.0c00774] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Zhitong Zheng
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Xu Ma
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Xinpeng Cheng
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Ke Zhao
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Kaylaa Gutman
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Tianyou Li
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Liming Zhang
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
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22
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Dubovtsev AY, Zvereva VV, Shcherbakov NV, Dar'in DV, Novikov AS, Kukushkin VY. Acid-catalyzed [2 + 2 + 2] cycloaddition of two cyanamides and one ynamide: highly regioselective synthesis of 2,4,6-triaminopyrimidines. Org Biomol Chem 2021; 19:4577-4584. [PMID: 33954321 DOI: 10.1039/d1ob00513h] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Triflic acid (10 mol%) catalyzes the highly regioselective [2 + 2 + 2] cycloaddition between two cyanamides and one ynamide to grant the 2,4,6-triaminopyrimidine core. The developed synthetic method is effective for the preparation of a family of the diversely substituted heterocyclic products (30 examples; yields up to 94%). The synthesis can be easily scaled up and conducted in gram quantities. As demonstrated by the post-functionalizations involving the amino-substituents, the obtained heterocycles represent a useful platform for the construction of miscellaneous pyrimidine-based frameworks. The performed density functional theory calculations verified a particular role of H+, functioning as an electrophilic activator, in the regioselectivity of the cycloaddition.
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Affiliation(s)
- Alexey Yu Dubovtsev
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation.
| | - Valeria V Zvereva
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation.
| | - Nikolay V Shcherbakov
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation.
| | - Dmitry V Dar'in
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation.
| | - Alexander S Novikov
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation.
| | - Vadim Yu Kukushkin
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation. and South Ural State University, 76, Lenin Av., 454080 Chelyabinsk, Russian Federation
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23
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Gujjarappa R, Vodnala N, Kandpal A, Roy L, Gupta S, Malakar CC. C sp–C sp bond cleavage and fragment coupling: a transition metal-free “extrusion and recombination” approach towards synthesis of 1,2-diketones. Org Chem Front 2021. [DOI: 10.1039/d1qo00848j] [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
A metal-free strategy for C–C bond activation of 1,3-diynes has been established via an “extrusion and recombination” approach to derive structurally important 1,2-diketones in good yields with excellent selectivity.
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Affiliation(s)
- Raghuram Gujjarappa
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal 795004, Manipur, India
| | - Nagaraju Vodnala
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal 795004, Manipur, India
- Department of Chemistry, Multi-storey building, HauzKhas, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Ashish Kandpal
- Institute of Chemical Technology Mumbai – IOC Odisha Campus Bhubaneswar, IIT Kharagpur Extension Centre, Bhubaneswar 751013, India
| | - Lisa Roy
- Institute of Chemical Technology Mumbai – IOC Odisha Campus Bhubaneswar, IIT Kharagpur Extension Centre, Bhubaneswar 751013, India
| | - Sreya Gupta
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Kolkata, Chunilal Bhawan, 168, Maniktala Main Road, Kolkata 700054, India
| | - Chandi C. Malakar
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal 795004, Manipur, India
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24
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Zhu JL, Tsai YT. Rhodium-Catalyzed Aerobic Decomposition of 1,3-Diaryl-2-diazo-1,3-diketones: Mechanistic Investigation and Application to the Synthesis of Benzils. J Org Chem 2021; 86:813-828. [PMID: 33395740 DOI: 10.1021/acs.joc.0c02366] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The conversion of 1,3-diaryl-2-diazo-1,3-diketones to 1,2-daryl-1,2-diketones (benzils) is reported based on a rhodium(II)-catalyzed aerobic decomposition process. The reaction occurs at ambient temperatures and can be catalyzed by a few dirhodium carboxylates (5 mol %) under a balloon pressure of oxygen. Moreover, an oxygen atom from the O2 reagent is shown to be incorporated into the product, and this is accompanied by the extrusion of a carbonyl unit from the starting materials. Mechanistically, it is proposed that the decomposition may proceed via the interaction of a ketene intermediate resulting from a Wolff rearrangement of the carbenoid, with a rhodium peroxide or peroxy radical species generated upon the activation of molecular oxygen. The proposed mechanism has been supported by the results from a set of controlled experiments. By using this newly developed strategy, a large array of benzil derivatives as well as 9,10-phenanthrenequinone were synthesized from the corresponding diazo substrates in varying yields. On the other hand, the method did not allow the generation of benzocyclobutene-1,2-dione from 2-diazo-1,3-indandione because of the difficulty of inducing the initial rearrangement.
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Affiliation(s)
- Jia-Liang Zhu
- Department of Chemistry, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien 97401, Taiwan, ROC
| | - Yi-Ting Tsai
- Department of Chemistry, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien 97401, Taiwan, ROC
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25
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Maikhuri VK, Prasad AK, Jha A, Srivastava S. Recent advances in the transition metal catalyzed synthesis of quinoxalines: a review. NEW J CHEM 2021. [DOI: 10.1039/d1nj01442k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This review summarizes the recent developments in the synthesis of a variety of substituted quinoxalines using transition metal catalysts.
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Affiliation(s)
- Vipin K. Maikhuri
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
| | - Ashok K. Prasad
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
| | - Amitabh Jha
- Department of Chemistry
- Acadia University
- Wolfville
- Canada
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26
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Zimin DP, Dar’in DV, Kukushkin VY, Dubovtsev AY. Oxygen Atom Transfer as Key To Reverse Regioselectivity in the Gold(I)-Catalyzed Generation of Aminooxazoles from Ynamides. J Org Chem 2020; 86:1748-1757. [DOI: 10.1021/acs.joc.0c02584] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Dmitry P. Zimin
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Dmitry V. Dar’in
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Vadim Yu. Kukushkin
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
- South Ural State University, 76, Lenin Av., Chelyabinsk 454080, Russian Federation
| | - Alexey Yu. Dubovtsev
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
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27
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Base-Promoted Annulation of Amidoximes with Alkynes: Simple Access to 2,4-Disubstituted Imidazoles. Molecules 2020; 25:molecules25163621. [PMID: 32784900 PMCID: PMC7463794 DOI: 10.3390/molecules25163621] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/26/2020] [Accepted: 08/06/2020] [Indexed: 01/19/2023] Open
Abstract
An efficient construction of imidazole ring by a Cs2CO3-promoted annulation of amidoximes with terminal alkynes in DMSO has been developed. This protocol provides a simple synthetic route with high atom-utilization for the synthesis of 2,4-disubstituted imidazoles in good yields under transition-metal-free and ligand-free conditions. Internal alkynes can also undergo the annulation to give 2,4,5-trisubstituted imidazoles.
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28
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Bhunia S, Ghosh P, Patra SR. Gold‐Catalyzed Oxidative Alkyne Functionalization by N−O/S−O/C−O Bond Oxidants. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000274] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sabyasachi Bhunia
- Department of Chemistry Central University of Jharkhand Ranchi Jharkhand 835205 India
| | - Partha Ghosh
- Department of Chemistry Central University of Jharkhand Ranchi Jharkhand 835205 India
| | - Snigdha Rani Patra
- Department of Chemistry Central University of Jharkhand Ranchi Jharkhand 835205 India
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29
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Matsuda T, Oyama S. Synthesis of unsymmetrical benzils via palladium-catalysed α-arylation-oxidation of 2-hydroxyacetophenones with aryl bromides. Org Biomol Chem 2020; 18:3679-3683. [PMID: 32369074 DOI: 10.1039/d0ob00575d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A diverse set of unsymmetrically substituted benzils were facilely synthesised by a cross-coupling reaction between 2-hydroxyacetophenones and aryl bromides in the presence of a palladium catalyst. Experimental studies suggested a reaction mechanism involving a one-pot tandem palladium-catalysed α-arylation and oxidation, where aryl bromides play a dual role as mild oxidants as well as arylating agents.
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Affiliation(s)
- Takanori Matsuda
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Souta Oyama
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
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30
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Abstract
The review highlights the recent advances (2018-present) in the regiocontrolled synthesis of substituted imidazoles. These heterocycles are key components to functional molecules that are used in a variety of everyday applications. An emphasis has been placed on the bonds constructed during the formation of the imidazole. The utility of these methodologies based around the functional group compatibility of the process and resultant substitution patterns around the ring are described, including discussion of scope and limitations, reaction mechanisms and future challenges.
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Affiliation(s)
- Dmitrii A Shabalin
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St, Irkutsk, 664033, Russian Federation
| | - Jason E Camp
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
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31
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Gujjarappa R, Vodnala N, Putta V, Ganga Reddy V, Malakar CC. Conversion of alkynes into 1,2-diketones using HFIP as sacrificial hydrogen donor and DMSO as dihydroxylating agent. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151588] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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32
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Dubovtsev AY, Shcherbakov NV, Dar’in DV, Kukushkin VY. Nature of the Nucleophilic Oxygenation Reagent Is Key to Acid-Free Gold-Catalyzed Conversion of Terminal and Internal Alkynes to 1,2-Dicarbonyls. J Org Chem 2019; 85:745-757. [DOI: 10.1021/acs.joc.9b02785] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexey Yu. Dubovtsev
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Nikolay V. Shcherbakov
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Dmitry V. Dar’in
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Vadim Yu. Kukushkin
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
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33
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Kopchuk DS, Nikonov IL, Khasanov AF, Gundala S, Krinochkin AP, Slepukhin PА, Zyryanov GV, Venkatapuram P, Chupakhin ON, Charushin VN. One-step synthesis of 1,4-bis(het)arylisoquinolines by the reaction of 1,2,4-triazines with arynes. Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02565-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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34
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Niesobski P, Martínez IS, Kustosz S, Müller TJJ. Sequentially Pd/Cu‐Catalyzed Alkynylation‐Oxidation Synthesis of 1,2‐Diketones and Consecutive One‐Pot Generation of Quinoxalines. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900783] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Patrik Niesobski
- Department Institut für Organische Chemie und Makromolekulare Chemie Heinrich‐Heine‐Universität Düsseldorf Universitätsstraße 1 40225 Düsseldorf Germany
| | - Ivette Santana Martínez
- Department Institut für Organische Chemie und Makromolekulare Chemie Heinrich‐Heine‐Universität Düsseldorf Universitätsstraße 1 40225 Düsseldorf Germany
| | - Sebastian Kustosz
- Department Institut für Organische Chemie und Makromolekulare Chemie Heinrich‐Heine‐Universität Düsseldorf Universitätsstraße 1 40225 Düsseldorf Germany
| | - Thomas J. J. Müller
- Department Institut für Organische Chemie und Makromolekulare Chemie Heinrich‐Heine‐Universität Düsseldorf Universitätsstraße 1 40225 Düsseldorf Germany
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35
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Dubovtsev AY, Dar'in DV, Kukushkin VY. Three‐Component [2+2+1] Gold(I)‐Catalyzed Oxidative Generation of Fully Substituted 1,3‐Oxazoles Involving Internal Alkynes. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900097] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Alexey Yu. Dubovtsev
- Saint Petersburg State University Universitetskaya Nab. 7/9 199034 Saint Petersburg Russian Federation
| | - Dmitry V. Dar'in
- Saint Petersburg State University Universitetskaya Nab. 7/9 199034 Saint Petersburg Russian Federation
| | - Vadim Yu. Kukushkin
- Saint Petersburg State University Universitetskaya Nab. 7/9 199034 Saint Petersburg Russian Federation
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