1
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Sheela K, Santhosh C, Singh KR, Sharath K, Sadashiva MP. An efficient synthesis of mono-, di-, and tri-substituted 1,3-thiazoles employing functionalized thioamides as thiocarbonyl precursors. Org Biomol Chem 2024; 22:3490-3501. [PMID: 38606459 DOI: 10.1039/d4ob00229f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
Herein, we report an efficient strategy to synthesize functionalized 1,3-thiazoles using alkyl 2-amino-2-thioxoacetates. Thioamides, the synthetic precursors, react effortlessly with electrophilic reagents and are transformed into a series of phenyl-, methyl-, and acyl-substituted thiazoles with high functionalization at the 2nd position through sequential C-S/C-N bond formation. Rapid reaction times under metal-free mild conditions is a noteworthy feature of the reported protocol. Given the intriguing biological significance of the synthesized molecules, we further performed a comprehensive evaluation of their potency against the SARS-CoV-2 receptor (PDB ID: 7mc6) using a molecular docking approach, with binding scores ranging from -4.3 to -8.2 kcal mol-1.
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Affiliation(s)
- Kalleshappa Sheela
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570 006, India.
| | - Chikkappaiahnayaka Santhosh
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570 006, India.
| | - Krishna Ravi Singh
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570 006, India.
| | - Kalleshappa Sharath
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570 006, India.
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2
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Banerjee R, Ali D, Mondal N, Choudhury LH. HFIP-Mediated Multicomponent Reactions: Synthesis of Pyrazole-Linked Thiazole Derivatives. J Org Chem 2024; 89:4423-4437. [PMID: 38483135 DOI: 10.1021/acs.joc.3c02567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
The development of one-pot, atom, and step-economic new methods avoiding metal, harsh reaction conditions, and toxic reagents for the synthesis of medicinally important hybrid molecules bearing more than one bioactive moieties is currently one of the hot topics in organic synthesis. Herein, we report a green and efficient room temperature multicomponent reaction for the synthesis of novel pyrazole-linked thiazoles involving a one-pot C-C, C-N, and C-S bond-forming process from the reaction of aryl glyoxal, aryl thioamide, and pyrazolones in 1,1,1,3,3,3-hexafluoroisopropanol, a hydrogen bond donating reaction medium. A set of diverse hybrid molecules bearing thiazole and pyrazole moieties were prepared in good to excellent yields by using this method. This methodology can also be extended to prepare thiazole-linked barbiturates as well as imidazole-linked pyrazoles. All the products were fully characterized by spectroscopic techniques. The notable features of this protocol are room temperature, metal as well as additive-free reaction conditions, use of recyclable solvent, water as the byproduct, wide substrate scope, operational simplicity, easy purification, applicability for gram-scale synthesis, high atom economy, and the presence of two bioactive pyrazole and thiazole moieties in the products.
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Affiliation(s)
- Riddhiman Banerjee
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801106, India
| | - Danish Ali
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801106, India
| | - Nurabul Mondal
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801106, India
| | - Lokman H Choudhury
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801106, India
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3
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Macías-Benítez P, Sierra-Padilla A, Guerra FM, Moreno-Dorado FJ. Microwave-Assisted One-Pot Telescoped Synthesis of 2-Amino-1,3-thiazoles, Selenazoles, Imidazo[1,2- a]pyridines, and Other Heterocycles from Alcohols. J Org Chem 2024; 89:4628-4646. [PMID: 38497561 DOI: 10.1021/acs.joc.3c02903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Primary and secondary alcohols have been converted into 2-amino-1,3-thiazoles under microwave irradiation, employing trichloroisocyanuric acid (TCCA) as a dual oxidant and chlorine source, TEMPO as a co-oxidant, and thiourea. Secondary alcohols underwent a single-stage, one-pot conversion process, while primary alcohols required a two-stage, one-pot procedure. Both transformations were completed within minutes (25-45 min). The versatility of this protocol extends to the synthesis of other heterocycles, including 1,3-selenazoles, 2-aminoimidazoles, imidazo[1,2-a]pyridines, quinoxalines, and hydrazino thiazoles by replacing thiourea with the appropriate surrogates.
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Affiliation(s)
- Pablo Macías-Benítez
- Departamento de Química Orgánica e Instituto de Biomoléculas, Facultad de Ciencias, Universidad de Cádiz, Polígono Río San Pedro s/n., 11510 Puerto Real, Cádiz, Spain
| | - Alfonso Sierra-Padilla
- Departamento de Química Orgánica e Instituto de Biomoléculas, Facultad de Ciencias, Universidad de Cádiz, Polígono Río San Pedro s/n., 11510 Puerto Real, Cádiz, Spain
| | - Francisco M Guerra
- Departamento de Química Orgánica e Instituto de Biomoléculas, Facultad de Ciencias, Universidad de Cádiz, Polígono Río San Pedro s/n., 11510 Puerto Real, Cádiz, Spain
| | - F Javier Moreno-Dorado
- Departamento de Química Orgánica e Instituto de Biomoléculas, Facultad de Ciencias, Universidad de Cádiz, Polígono Río San Pedro s/n., 11510 Puerto Real, Cádiz, Spain
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4
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Rajput K, Singh V, Mahaur P, Singh S, Srivastava V. Visible-light-induced C-S bond formation in the synthesis of 2,4-disubstituted thiazoles through cascade difunctionalization of acetophenone: a greener approach. Org Biomol Chem 2024; 22:2774-2779. [PMID: 38497383 DOI: 10.1039/d4ob00096j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
A groundbreaking approach has been developed for synthesizing 2,4-disubstituted thiazoles using an eco-friendly and metal-free approach. This novel method utilizes methyl aryl ketones, N-bromo-succinimide (NBS), and thioamides in water as a green reaction medium under visible light irradiation. Using NBS as a bromine source, the reaction takes place through an in situ α-bromination method. This approach does not require any catalyst, which makes it exceptionally beneficial for the environment. The advantages of this efficient approach are manifold and include the use of greener conditions, absence of metals, easy isolation of products, cost-effectiveness, non-toxicity, and reliance on renewable energy sources like visible light. Moreover, this technique offers higher product purity and excellent yield, enhancing itsappeal.
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Affiliation(s)
- Khushbu Rajput
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi-221 005, U.P., India.
| | - Vishal Singh
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi-221 005, U.P., India.
| | - Priya Mahaur
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi-221 005, U.P., India.
| | - Sundaram Singh
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi-221 005, U.P., India.
| | - Vandana Srivastava
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi-221 005, U.P., India.
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5
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Jadhao NL, Musale HB, Gajbhiye JM, Humne VT. Copper-mediated [3 + 2] oxidative cyclization of oxime acetate and its utility in the formal synthesis of fentiazac. Org Biomol Chem 2024; 22:521-528. [PMID: 38087933 DOI: 10.1039/d3ob01882b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
A new protocol for the direct synthesis of 2-aminothiazole has been developed from oxime acetate and readily available sodium thiocyanate using a copper catalyst. The present transformation has good functional group tolerance. Various thiazoles were smoothly synthesized in good to excellent yields. The applicability of the present method has been extended to the formal synthesis of the non-steroidal and anti-inflammatory drug, fentiazac via the Sandmeyer reaction and Suzuki coupling.
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Affiliation(s)
- Nitin L Jadhao
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune, 411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Harish B Musale
- Department of Chemistry, Shri R. R. Lahoti Science College, Morshi, 444905, India.
| | - Jayant M Gajbhiye
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune, 411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Vivek T Humne
- Department of Chemistry, Shri R. R. Lahoti Science College, Morshi, 444905, India.
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6
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Abbasi M, Nowrouzi N, Sajedinia S. I 2-catalyzed one-pot oxidative condensation of thiourea, methyl ketones, and aryl thiols into 5-sulfenylated 2-amino-1,3-thiazoles by DMSO. Mol Divers 2023; 27:2887-2894. [PMID: 36515805 DOI: 10.1007/s11030-022-10585-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 12/04/2022] [Indexed: 12/15/2022]
Abstract
A one-pot, efficient oxidative-condensation process for constructing both 4-alkyl and 4-aryl-5-(arylthio) thiazol-2-amines using DMSO/I2 is introduced. In this procedure, methyl ketones, thiourea, DMSO, and thiols are reacted together in the presence of molecular I2 at 80 °C simply to produce 4-alkyl or aryl-5-(arylthio)thiazol-2-amines due to formation of a C-S bond between thiourea and methyl carbon linked to carbonyl group and the another C-S bond formation between thiol and thiazol ring. Under reaction conditions, both aryl and alkyl methyl ketones including acetophenone and substituted acetophenones also, 2-alkanones such as acetone, 2-butanone, 2-pentanone, and 2-heptanone yield those products successfully.
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Affiliation(s)
- Mohammad Abbasi
- Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr, 75169, Iran.
| | - Najmeh Nowrouzi
- Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr, 75169, Iran
| | - Sara Sajedinia
- Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr, 75169, Iran
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7
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Lin D, Liu Y, Yang H, Zhang X, Sun H, Jian Y, Zhang W, Yang J, Gao Z. A General Synthesis of Cross-Conjugated Enynones through Pd Catalyzed Sonogashira Coupling with Triazine Esters. Molecules 2023; 28:molecules28114364. [PMID: 37298843 DOI: 10.3390/molecules28114364] [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: 04/19/2023] [Revised: 05/14/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
The palladium-catalyzed Sonogashira coupling of α, β-unsaturated acid derivatives offers a diversity-oriented synthetic strategy for cross-conjugated enynones. However, the susceptibility of the unsaturated C-C bonds adjacent to the carbonyl group toward Pd catalysts makes the direct conversion of α, β-unsaturated derivatives as acyl electrophiles to cross-conjugated ketones rare. This work presents a highly selective C-O activation approach to prepare cross-conjugated enynones using α, β-unsaturated triazine esters as acyl electrophiles. Under base and phosphine ligand-free conditions, NHC-Pd(II)-Allyl precatalyst alone catalyzed the cross-coupling of α, β-unsaturated triazine esters with terminal alkynes efficiently, yielding 31 cross-conjugated enynones with diverse functional groups. This method demonstrates the potential of triazine-mediated C-O activation for preparing highly functionalized ketones.
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Affiliation(s)
- Dezhi Lin
- Key Laboratory of Applied Surface and Colloid Chemistry (MOE), Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Yunfang Liu
- South China Institute of Environmental Science, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Hongyu Yang
- Key Laboratory of Applied Surface and Colloid Chemistry (MOE), Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Xiao Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry (MOE), Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Huaming Sun
- Key Laboratory of Applied Surface and Colloid Chemistry (MOE), Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Yajun Jian
- Key Laboratory of Applied Surface and Colloid Chemistry (MOE), Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Weiqiang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry (MOE), Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Jianming Yang
- Xi'an Modern Chemistry Research Institute, Xi'an 710065, China
| | - Ziwei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry (MOE), Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
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8
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Kumar N, Sharma A, Kumar U, Pandey SK. Multicomponent Reaction of CS 2, Amines, and Sulfoxonium Ylides in Water: Straightforward Access to β-Keto Dithiocarbamates, Thiazolidine-2-thiones, and Thiazole-2-thiones. J Org Chem 2023; 88:6120-6125. [PMID: 37018423 DOI: 10.1021/acs.joc.2c02763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Simple, versatile, and catalyst-free synthetic methods for β-keto dithiocarbamates, thiazolidine-2-thiones, and thiazole-2-thiones via the multicomponent reaction of CS2, amines, and sulfoxonium ylides have been described. The β-keto sulfoxonium ylides furnished β-keto dithiocarbamates in the presence of CS2 and secondary amines, whereas primary amines afforded thiazolidine-2-thiones or thiazole-2-thiones after dehydration in an acidic environment. With simple procedures, the reaction has a wide substrate scope and excellent functional group tolerance.
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Affiliation(s)
- Naveen Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Ajay Sharma
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Upendra Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Satyendra Kumar Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
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9
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Raya I, Solanki R, Rahi Alhachami F, Turki Jalil A, Fakri Mustafa Y. Copper (II) Complex Immobilized on Magnetic Nanoparticles Functionalized with Imine/Thio Ligand (Fe 3O 4@SiO 2-Imine/Thio-Cu(II)): A Novel, Efficient and Reusable Nanomagnetic Catalysts for the Synthesis of 2,4,6-Triaryl Pyridines. Polycycl Aromat Compd 2023. [DOI: 10.1080/10406638.2022.2164015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Indah Raya
- Department of Chemistry, Faculty of Mathematics and Natural Science, Hasanuddin University, Makassar, Indonesia
| | - Reena Solanki
- Department of Chemistry, Dr. A.P.J. Abdul Kalam University, Indore, India
| | | | | | - Yasser Fakri Mustafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Mosul, Mosul, Iraq
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10
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Gholami F, Yousefnejad F, Larijani B, Mahdavi M. Vinyl azides in organic synthesis: an overview. RSC Adv 2023; 13:990-1018. [PMID: 36686934 PMCID: PMC9811501 DOI: 10.1039/d2ra06726a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 12/05/2022] [Indexed: 01/06/2023] Open
Abstract
Among organic azides, vinyl azides have attracted significant attention, because of their unique properties in organic synthesis, which led to reports of many types of research on this versatile conjugated azide in recent years. This magical precursor can also be converted into intermediates such as iminyl radicals, 2H-azirines, iminyl metal complexes, nitrilium ions, and iminyl ions, making this compound useful in heterocycle synthesis.
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Affiliation(s)
- Fateme Gholami
- School of Chemistry, College of Science, University of Tehran Tehran Iran
| | - Faeze Yousefnejad
- School of Chemistry, College of Science, University of Tehran Tehran Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences Tehran Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences Tehran Iran
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11
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Electrochemical oxythiocyanation of ortho-olefinic amides: access to diverse thiocyanated benzoxazines. Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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12
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Li J, Jia X, Qiu J, Wang M, Chen J, Jing M, Xu Y, Zheng X, Dai H. Brønsted Acid-Catalyzed Synthesis of 1,2,5-Trisubstituted Imidazoles via a Multicomponent Reaction of Vinyl Azides with Aromatic Aldehydes and Aromatic Amines. J Org Chem 2022; 87:13945-13954. [PMID: 36223536 DOI: 10.1021/acs.joc.2c01624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A facile and efficient approach to the synthesis of 1,2,5-trisubstituted imidazoles is developed via a multicomponent reaction under metal-free catalysis. Under Brønsted acid catalysis, the desired products can be obtained from readily available vinyl azides, aromatic aldehydes, and aromatic amines without generating any toxic waste. The convenient operations and high functional group compatibility indicate that this approach offers an attractive alternative method for the synthesis of imidazole derivatives.
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Affiliation(s)
- Jiuling Li
- Henan Engineering Research Center of Funiu Mountain's Medical Resources Utilization and Molecular Medicine, School of Medical Sciences, Pingdingshan University, Pingdingshan 467000, People's Republic of China
| | - Xinyu Jia
- Henan Engineering Research Center of Funiu Mountain's Medical Resources Utilization and Molecular Medicine, School of Medical Sciences, Pingdingshan University, Pingdingshan 467000, People's Republic of China
| | - Ju Qiu
- Henan Engineering Research Center of Funiu Mountain's Medical Resources Utilization and Molecular Medicine, School of Medical Sciences, Pingdingshan University, Pingdingshan 467000, People's Republic of China
| | - Min Wang
- Henan Engineering Research Center of Funiu Mountain's Medical Resources Utilization and Molecular Medicine, School of Medical Sciences, Pingdingshan University, Pingdingshan 467000, People's Republic of China
| | - Juan Chen
- Henan Engineering Research Center of Funiu Mountain's Medical Resources Utilization and Molecular Medicine, School of Medical Sciences, Pingdingshan University, Pingdingshan 467000, People's Republic of China
| | - Minghui Jing
- Henan Engineering Research Center of Funiu Mountain's Medical Resources Utilization and Molecular Medicine, School of Medical Sciences, Pingdingshan University, Pingdingshan 467000, People's Republic of China
| | - Yifu Xu
- Henan Engineering Research Center of Funiu Mountain's Medical Resources Utilization and Molecular Medicine, School of Medical Sciences, Pingdingshan University, Pingdingshan 467000, People's Republic of China
| | - Xinhua Zheng
- Henan Engineering Research Center of Funiu Mountain's Medical Resources Utilization and Molecular Medicine, School of Medical Sciences, Pingdingshan University, Pingdingshan 467000, People's Republic of China
| | - Hongmei Dai
- Henan Engineering Research Center of Funiu Mountain's Medical Resources Utilization and Molecular Medicine, School of Medical Sciences, Pingdingshan University, Pingdingshan 467000, People's Republic of China
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13
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Selective Aminothiazole‐Derivative Probe for Detection of Phosphate in Freshwater. ChemistrySelect 2022. [DOI: 10.1002/slct.202202740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Zeng J, Wan JP, Liu Y. Photocatalytic C–H Thiocyanation of NH 2-Enaminones and the Tunable Synthetic Routes to 2-Aminothiazoles and 2-Thiazolinones. J Org Chem 2022; 87:13195-13203. [DOI: 10.1021/acs.joc.2c01667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Junlong Zeng
- National Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Jie-Ping Wan
- National Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Yunyun Liu
- National Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Zhejiang 312000, P.R. China
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15
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Yuan L, Liu J, Huang K, Wang S, Jin Y, Lin J. Cascade Reaction of Tertiary Enaminones, KSCN, and Anilines: Temperature-Controlled Synthesis of 2-Aminothiazoles and 2-Iminothiazoline. J Org Chem 2022; 87:9171-9183. [PMID: 35786913 DOI: 10.1021/acs.joc.2c00918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A one-pot cascade strategy for the synthesis of 2-aminothiazole derivatives by tertiary enaminones, KSCN, and anilines was developed. By changing the reaction temperature, the three-component reaction could be transformed in different ways to obtain moderate to good yields of polysubstituted 2-aminothiazoles and 2-iminothiazolines. This protocol provides an efficient and concise approach to accessing 2-aminothiazole derivatives with potential bioactivity from readily accessible building blocks and reagents.
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Affiliation(s)
- Liu Yuan
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Jin Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Kun Huang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Siyu Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Yi Jin
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Jun Lin
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
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16
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Liu Z, Yu T, Li L, Fu W, Gan X, Chen H, Gao W, Tang B. S-triggered Schmidt-type rearrangement of vinyl azides to access N-aryl-(trifluoromethylsulfinyl)acetamides. Org Chem Front 2022. [DOI: 10.1039/d1qo01516h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel S-induced Schmidt-type rearrangement of vinyl azides with CF3SO2Na is developed for synthesis of N-arylated 2-(trifluoromethylsulfinyl)acetamieds, which is mediated by triphosgene (BTC) under mild reaction conditions.
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Affiliation(s)
- Zhenhua Liu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan 250014, P.R. China
| | - Tian Yu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan 250014, P.R. China
| | - Longhua Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan 250014, P.R. China
| | - Wei Fu
- Department of Pharmacy, Zibo Central Hospital, Zibo 255000, P. R. China
| | - Xingxing Gan
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan 250014, P.R. China
| | - Huimin Chen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan 250014, P.R. China
| | - Wen Gao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan 250014, P.R. China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan 250014, P.R. China
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17
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RAVI SINGH K, Santhosh C, Swaroop TR, Sadashiva MP. Regioselective synthesis of 2,5- and 4,5-disubstituted thiazoles via cyclization of 2-oxo-2-(amino)ethanedithioates with isocyanides. Org Biomol Chem 2022; 20:5771-5778. [DOI: 10.1039/d2ob00837h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The regioselective synthesis of 2-(methylthio)-N-aryl/alkylthiazole-5-carboxamides and ethyl-5-(aryl/alkyl carbamoyl)thiazole-4-carboxylates by base induced cyclization of methyl-2-oxo-2-(amino)ethanedithioates with TosMIC and ethylisocyanoacetate respectively in high yield. The regioisomeric product was confirmed by X-ray diffraction...
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18
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Zhang K, Liang T, Wang Y, He C, Hu M, Duan XH, Liu L. Oxidative thiocyanation of allylic alcohols: an easy access to allylic thiocyanates with K2S2O8 and NH4SCN. Org Chem Front 2022. [DOI: 10.1039/d1qo01710a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A practical method for the synthesis of allylic thioacyanates from allylic alcohols was disclosed employing K2S2O8 as the oxidant and NH4SCN as the thiocyanate source.
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Affiliation(s)
- Keyuan Zhang
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Tianbing Liang
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yulong Wang
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Chonglong He
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Mingyou Hu
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xin-Hua Duan
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Le Liu
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
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19
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Dorofeev IА, Zhilitskaya LV, Yarosh NО. Synthesis of Salts and Ionic Liquids on the Basis of 2-Aminothiazolium Cations. RUSS J GEN CHEM+ 2021. [DOI: 10.1134/s1070363221120136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Chen L, Xuchen X, Wang F, Yang Y, Deng G, Liu Y, Liang Y. Double C-S bond formation via multiple Csp 3-H bond cleavage: synthesis of 4-hydroxythiazoles from amides and elemental sulfur under metal-free conditions. Org Biomol Chem 2021; 19:10068-10072. [PMID: 34762083 DOI: 10.1039/d1ob01989a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A novel and efficient approach for the synthesis of 4-hydroxythiazoles from amides and elemental sulfur has been developed. In the presence of P2O5, DMSO and HMPA, this metal-free protocol proceeds smoothly and tolerates a spectrum of functional groups. Furthermore, this strategy involves the process of double Csp3-S bond formation through the cleavage of multiple Csp3-H bonds for the first time.
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Affiliation(s)
- Liang Chen
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China. .,Huaihua Normal College, Huaihua 418008, China
| | - Xinyu Xuchen
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China.
| | - Fei Wang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China.
| | - Yuan Yang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China.
| | - Guobo Deng
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China. .,Ministry of Education Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China
| | - Yilin Liu
- Institute of Organic Synthesis, College of Chemistry and Materials Engineering, Huaihua University, Huaihua 418008, China.
| | - Yun Liang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China.
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21
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Sadgar AL, Deore TS, Hase DV, Jayaram RV. Graphene Oxide Pickering Emulsion – A Novel Reaction Medium for the Synthesis of 2‐Aminothiazole. ChemistrySelect 2021. [DOI: 10.1002/slct.202102808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Amid L. Sadgar
- Department of Chemistry Institute of Chemical Technology Nathalal Parekh Marg, Matunga Mumbai 400019
| | - Tushar S. Deore
- Department of Chemistry Institute of Chemical Technology Nathalal Parekh Marg, Matunga Mumbai 400019
| | - Dattatraya V. Hase
- Department of Chemistry Institute of Chemical Technology Nathalal Parekh Marg, Matunga Mumbai 400019
| | - Radha V. Jayaram
- Department of Chemistry Institute of Chemical Technology Nathalal Parekh Marg, Matunga Mumbai 400019
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22
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Chen Y, Lv S, Lai R, Xu Y, Huang X, Li J, Lv G, Wu Y. Synthesis of 2-aminothiazoles via rhodium-catalyzed carbenoid insertion/annulation of sulfoxonium ylides with thioureas. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.02.052] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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23
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Nguyen TB, Retailleau P. Base-Catalyzed Three-Component Reaction between Chalcones, Isothiocyanates, and Sulfur: Access to Thiazole-2-thiones. Org Lett 2021; 23:5344-5348. [PMID: 34227811 DOI: 10.1021/acs.orglett.1c01653] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A convenient synthesis of thiazole-2-thiones was developed based on base-catalyzed three-component reactions between chalcones, isothiocyanates, and elemental sulfur.
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Affiliation(s)
- Thanh Binh Nguyen
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 avenue de la Terrasse, 91198 Gif-sur-Yvette, France
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24
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Wang Y, Wang YJ, Liang XC, Shen MH, Xu HD, Xu D. An aryl thiol-vinyl azide coupling reaction and a thiol-vinyl azide coupling/cyclization cascade: efficient synthesis of β-ketosulfides and arene-fused 5-methylene-2-pyrrolidinone derivatives. Org Biomol Chem 2021; 19:5169-5176. [PMID: 34037057 DOI: 10.1039/d1ob00328c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The addition reaction of thiol to vinyl azide has been extensively studied. Variously substituted aryl thiols are all viable for this coupling process. The scope of the other partner is successfully expanded from α-aryl vinyl azide to α-alkyl vinyl azide. A thiol-vinyl azide coupling/cyclization cascade is realized with substituted aryl vinyl azides carrying a 2-methoxycarbonyl group. The value of β-ketosulfide products was demonstrated by its application in S-heterocycle synthesis.
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Affiliation(s)
- Yong Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu Province 213164, China.
| | - Yu-Jiao Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu Province 213164, China.
| | - Xian-Chen Liang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu Province 213164, China.
| | - Mei-Hua Shen
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu Province 213164, China.
| | - Hua-Dong Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu Province 213164, China.
| | - Defeng Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu Province 213164, China.
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25
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An Z, Liu Y, Zhao P, Yan R. I
2
‐Promoted [3+2] Cyclization of 1,3‐Diketones with Potassium Thiocyanate: a Route to Thiazol‐2(3
H
)‐One Derivatives. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100228] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Zhenyu An
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 Gansu People's Republic of China
| | - Yafeng Liu
- Chemical Science and Engineering College North Minzu University Yinchuan 750000 People's Republic of China
| | - Pengbo Zhao
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 Gansu People's Republic of China
| | - Rulong Yan
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 Gansu People's Republic of China
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26
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Petrou A, Fesatidou M, Geronikaki A. Thiazole Ring-A Biologically Active Scaffold. Molecules 2021; 26:3166. [PMID: 34070661 PMCID: PMC8198555 DOI: 10.3390/molecules26113166] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/15/2021] [Accepted: 05/20/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Thiazole is a good pharmacophore nucleus due to its various pharmaceutical applications. Its derivatives have a wide range of biological activities such as antioxidant, analgesic, and antimicrobial including antibacterial, antifungal, antimalarial, anticancer, antiallergic, antihypertensive, anti-inflammatory, and antipsychotic. Indeed, the thiazole scaffold is contained in more than 18 FDA-approved drugs as well as in numerous experimental drugs. OBJECTIVE To summarize recent literature on the biological activities of thiazole ring-containing compounds Methods: A literature survey regarding the topics from the year 2015 up to now was carried out. Older publications were not included, since they were previously analyzed in available peer reviews. RESULTS Nearly 124 research articles were found, critically analyzed, and arranged regarding the synthesis and biological activities of thiazoles derivatives in the last 5 years.
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Affiliation(s)
| | | | - Athina Geronikaki
- School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (A.P.); (M.F.)
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27
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Wu H, Shao C, Wu D, Jiang L, Yin H, Chen FX. Atom-Economical Thiocyanation-Amination of Alkynes with N-Thiocyanato-Dibenzenesulfonimide. J Org Chem 2021; 86:5327-5335. [PMID: 33703903 DOI: 10.1021/acs.joc.0c02780] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A highly regioselective protocol for intermolecular thiocyanation-amination of alkynes by N-thiocyano-dibenzenesulfonimide (NTSI) as the SCN and nitrogen sources has been developed. A C-S bond and C-N bond are simultaneously constructed in only one step. The reaction under simple mild conditions features a broad substrate scope, atom economy, high yields (up to 94%), and excellent functional group tolerance.
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Affiliation(s)
- Haopeng Wu
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology (Liangxiang Campus), No. 8 Liangxiang East Road, Fangshan District, Beijing, 102488, China
| | - Chukai Shao
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology (Liangxiang Campus), No. 8 Liangxiang East Road, Fangshan District, Beijing, 102488, China
| | - Di Wu
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology (Liangxiang Campus), No. 8 Liangxiang East Road, Fangshan District, Beijing, 102488, China
| | - Liang Jiang
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology (Liangxiang Campus), No. 8 Liangxiang East Road, Fangshan District, Beijing, 102488, China
| | - Hongquan Yin
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology (Liangxiang Campus), No. 8 Liangxiang East Road, Fangshan District, Beijing, 102488, China.,State Key Laboratory of Medicinal Chemical Biology, NanKai University, No. 94 Wei Jin Road, Nankai District, Tianjin, 300071, China
| | - Fu-Xue Chen
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology (Liangxiang Campus), No. 8 Liangxiang East Road, Fangshan District, Beijing, 102488, China
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28
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Gu Q, Wang Q, Dai W, Wang X, Ban Y, Liu T, Zhao Y, Zhang Y, Ling Y, Zeng X. K 2S 2O 8-mediated regio- and stereo-selective thiocyanation of enamides with NH 4SCN. Org Biomol Chem 2021; 19:2512-2516. [PMID: 33662088 DOI: 10.1039/d1ob00156f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A direct and straightforward thiocyanation of enamides with NH4SCN under metal-free conditions has been accomplished. A variety of (E)-β-thiocyanoenamides are readily produced in a regio- and stereo-selective manner. The protocol features mild reaction conditions, good functional group tolerance and operational simplicity. The potential utility of this strategy was further demonstrated by transformation of thiocyanate into thiotetrazole-containing compounds and a Pd-catalyzed cross-coupling reaction to afford six- or seven-membered sulfur-containing heterocycles. Mechanistic insights into the reaction indicate that the reaction may proceed via a radical mechanism.
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Affiliation(s)
- Qingyun Gu
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, People's Republic of China.
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29
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An Overview of the Synthesis and Antimicrobial, Antiprotozoal, and Antitumor Activity of Thiazole and Bisthiazole Derivatives. Molecules 2021; 26:molecules26030624. [PMID: 33504100 PMCID: PMC7865802 DOI: 10.3390/molecules26030624] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/19/2021] [Accepted: 01/22/2021] [Indexed: 11/16/2022] Open
Abstract
Thiazole, a five-membered heteroaromatic ring, is an important scaffold of a large number of synthetic compounds. Its diverse pharmacological activity is reflected in many clinically approved thiazole-containing molecules, with an extensive range of biological activities, such as antibacterial, antifungal, antiviral, antihelmintic, antitumor, and anti-inflammatory effects. Due to its significance in the field of medicinal chemistry, numerous biologically active thiazole and bisthiazole derivatives have been reported in the scientific literature. The current review provides an overview of different methods for the synthesis of thiazole and bisthiazole derivatives and describes various compounds bearing a thiazole and bisthiazole moiety possessing antibacterial, antifungal, antiprotozoal, and antitumor activity, encouraging further research on the discovery of thiazole-containing drugs.
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30
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Patel RI, Sharma S, Sharma A. Cyanation: a photochemical approach and applications in organic synthesis. Org Chem Front 2021. [DOI: 10.1039/d1qo00162k] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review summarises the photocatalytic cyanation strategies to construct C(sp2)–CN, C(sp3)–CN and X–CN (X = N, S) bonds.
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Affiliation(s)
- Roshan I. Patel
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Shivani Sharma
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Anuj Sharma
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
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31
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Kakati P, Singh P, Yadav P, Awasthi SK. Aiding the versatility of simple ammonium ionic liquids by the synthesis of bioactive 1,2,3,4-tetrahydropyrimidine, 2-aminothiazole and quinazolinone derivatives. NEW J CHEM 2021. [DOI: 10.1039/d1nj00280e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The work presented in this paper showcases the utility of ionic liquids in the synthesis of tetrahydropyrimidinone, 2-aminothiazole and quinazolinone derivatives in a sustainable protocol.
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Affiliation(s)
- Praachi Kakati
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
| | - Preeti Singh
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
| | - Priyanka Yadav
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
| | - Satish Kumar Awasthi
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
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32
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Chen W, Li T, Peng X. Visible-light-promoted thiocyanation of sp 2 C–H bonds over heterogeneous graphitic carbon nitrides. NEW J CHEM 2021. [DOI: 10.1039/d1nj00532d] [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
Mesoporous graphitic carbon nitride (mpg-C3N4) is developed as a practical heterogeneous photocatalyst for C–S bond formation.
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Affiliation(s)
- Wei Chen
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- China
| | - Tingzhen Li
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- China
| | - Xinwen Peng
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- China
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33
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Paveliev SA, Alimkhanova LS, Sergeeva AV, Terent'ev AO. Cerium(IV) ammonium nitrate promoted synthesis of O-phthalimide oximes from vinyl azides and N-hydroxyphthalimide. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152533] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Zhang Y, Luo M, Li Y, Shen R, Qi C, Wang H, Cheng K. One-pot synthesis of β-ketosulfones from sulfonyl chloride, hydrazine hydrate and vinyl azide in water. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131635] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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35
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Visible-Light-Mediated Decarboxylative Thiocyanation of Cinnamic acids: An Efficient Photocatalytic Approach to the Synthesis of (E)-Vinyl Thiocyanates. Catal Letters 2020. [DOI: 10.1007/s10562-020-03414-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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36
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Ujwaldev SM, Harry NA, Neetha M, Anilkumar G. Novel synthesis of
2‐Aminothiazoles
via Fe(
III
)‐Iodine‐catalyzed Hantzsch‐type condensation. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Nissy Ann Harry
- School of Chemical Sciences Mahatma Gandhi University Kottayam India
| | - Mohan Neetha
- School of Chemical Sciences Mahatma Gandhi University Kottayam India
| | - Gopinathan Anilkumar
- School of Chemical Sciences Mahatma Gandhi University Kottayam India
- Advanced Molecular Materials Research Centre (AMMRC) Mahatma Gandhi University Kottayam India
- Institute for Integrated Programmes and Research in Basic Sciences (IIRBS) Mahatma Gandhi University Kottayam India
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37
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Nagarajaiah H, Prasad NL, Begum NS. Sequential One-Pot Synthesis of 2-Aminothiazoles Using Corresponding Ketones: Insights into Their Structural Features. Polycycl Aromat Compd 2020. [DOI: 10.1080/10406638.2020.1821228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- H. Nagarajaiah
- Department of Chemistry, REVA University, Bengaluru, India
| | - N. L. Prasad
- Department of Chemistry, Bangalore University, Bangalore, India
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38
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One-pot synthesis of 4-aryl-2-aminothiazoles from styrenes and thioureas promoted by tribromoisocyanuric acid. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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39
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Jena TK, Khan FA. Acid mediated synthesis of thiazolines, thiazoles and enamide derivatives from methyl enol ethers: Application towards synthesis of wilsoniamine B. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151675] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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40
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Qi L, Liu S, Xiao L. Regio- and stereoselective thiocyanatothiolation of alkynes and alkenes by using NH4SCN and N-thiosuccinimides. RSC Adv 2020; 10:33450-33454. [PMID: 35515071 PMCID: PMC9056709 DOI: 10.1039/d0ra06913b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 09/01/2020] [Indexed: 12/18/2022] Open
Abstract
A highly regioselective thiocyanatothiolation of alkynes and alkenes assisted by hydrogen bonding under simple and mild conditions is developed. Our thiocyanatothiolation reagents are readily available ammonium thiocyanate and N-thiosuccinimides. This metal-free system offers good chemical yields for a wide range of alkyne and alkene substrates with good functional group tolerance. A highly regioselective thiocyanatothiolation of alkynes assisted by hydrogen bonding under simple and mild conditions is developed.![]()
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Affiliation(s)
- Liang Qi
- Jiangsu Vocational College of Medicine
- Yancheng
- China
| | - Shiwen Liu
- College of Textiles and Clothing
- Yancheng Institute of Technology
- Yancheng
- China
| | - Linxia Xiao
- Jiangsu Vocational College of Medicine
- Yancheng
- China
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41
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Wu W, Chen Q, Tian Y, Xu Y, Huang Y, You Y, Weng Z. Synthesis of polysubstituted 5-trifluoromethyl isoxazoles via denitrogenative cyclization of vinyl azides with trifluoroacetic anhydride. Org Chem Front 2020. [DOI: 10.1039/d0qo00243g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A general method for the synthesis of 5-(trifluoromethyl)isoxazoles by denitrogenative cyclization of vinyl azides with trifluoroacetic anhydride has been developed.
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Affiliation(s)
- Wei Wu
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Qiaoling Chen
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yishi Tian
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yihui Xu
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yangjie Huang
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yi You
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
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42
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Chen J, Liang T, Zhao H, Lin C, Chen L, Zhang M. Silver-mediated three-component cycloaddition reaction for direct synthesis of 1-N-vinyl-substituted 1,2,3-triazoles. Org Biomol Chem 2019; 17:4843-4849. [PMID: 31033976 DOI: 10.1039/c9ob00686a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Herein, we report direct synthesis of 1-N-vinyl-1,2,3-triazoles via silver-mediated three-component cycloaddition reaction of phenylacetylenes, trimethylsilylazide, and 1,3-dicarbonyl compounds. The synthetic protocol proceeds with operational simplicity, good substrate and functional group compatibility, and easily available feedstocks, and without the need for pre-installation of vinylazide precursors, and offers a practical method for the efficient elaboration of triazole derivatives.
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Affiliation(s)
- Jinpeng Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, 381 Wushan Rd, Guangzhou 510640, People's Republic of China.
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43
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Meng F, Zhang H, He H, Xu N, Fang Q, Guo K, Cao S, Shi Y, Zhu Y. Copper‐Catalyzed Domino Cyclization/Thiocyanation of Unactivated Olefins: Access to SCN‐Containing Pyrazolines. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901104] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Fei Meng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Honglin Zhang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Han He
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Ning Xu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Qin Fang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Kang Guo
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Shujun Cao
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Yun Shi
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
- College of Plant ProtectionNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
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44
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Huang X, Chen H, Huang Z, Xu Y, Li F, Ma X, Chen Y. Visible Light-Induced Difunctionalization of Alkynes: The Synthesis of Thiazoles and 1,1-Dibromo-1-en-3-ynes. J Org Chem 2019; 84:15283-15293. [DOI: 10.1021/acs.joc.9b02300] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaoying Huang
- Pharmacy School, Guilin Medical University, Guilin 541004, People’s Republic of China
- College of Materials and Chemical Engineering, Hezhou University, Hezhou 542899, China
| | - Hui Chen
- Pharmacy School, Guilin Medical University, Guilin 541004, People’s Republic of China
| | - Zhongzhi Huang
- Pharmacy School, Guilin Medical University, Guilin 541004, People’s Republic of China
| | - Yanli Xu
- Pharmacy School, Guilin Medical University, Guilin 541004, People’s Republic of China
| | - Fangyao Li
- Pharmacy School, Guilin Medical University, Guilin 541004, People’s Republic of China
| | - Xianli Ma
- Pharmacy School, Guilin Medical University, Guilin 541004, People’s Republic of China
| | - Yanyan Chen
- Pharmacy School, Guilin Medical University, Guilin 541004, People’s Republic of China
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45
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Liu Z, Zhang Z, Zhu G, Zhou Y, Yang L, Gao W, Tong L, Tang B. Copper-Catalyzed Aldol Reaction of Vinyl Azides with Trifluoromethyl Ketones. Org Lett 2019; 21:7324-7328. [DOI: 10.1021/acs.orglett.9b02616] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zhenhua Liu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Zhihai Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Guangyu Zhu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Yiqin Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Lin Yang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Wen Gao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Lili Tong
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
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46
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Duan X, Liu X, Cuan X, Wang L, Liu K, Zhou H, Chen X, Li H, Wang J. Solvent-Controlled Synthesis of Thiocyanated Enaminones and 2-Aminothiazoles from Enaminones, KSCN, and NBS. J Org Chem 2019; 84:12366-12376. [DOI: 10.1021/acs.joc.9b01722] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiyan Duan
- School of Chemical Engineering & Pharmaceutics, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Xiaojing Liu
- School of Chemical Engineering & Pharmaceutics, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Xiaodan Cuan
- School of Chemical Engineering & Pharmaceutics, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Lin Wang
- School of Chemical Engineering & Pharmaceutics, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Kun Liu
- School of Chemical Engineering & Pharmaceutics, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Huiyun Zhou
- School of Chemical Engineering & Pharmaceutics, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Xue Chen
- School of Chemical Engineering & Pharmaceutics, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Huimin Li
- School of Chemical Engineering & Pharmaceutics, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Junqin Wang
- School of Chemical Engineering & Pharmaceutics, Henan University of Science and Technology, Luoyang 471003, Henan, China
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47
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Zhang Y, Cao Y, Lu L, Zhang S, Bao W, Huang S, Rao Y. Perylenequinonoid-Catalyzed [4 + 1] and [4 + 2] Annulations of Azoalkenes: Photocatalytic Access to 1,2,3-Thiadiazole/1,4,5,6-Tetrahydropyridazine Derivatives. J Org Chem 2019; 84:7711-7721. [PMID: 31117482 DOI: 10.1021/acs.joc.9b00545] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Nitrogen-containing heterocycles are especially considered "privileged" structural scaffolds for the development of new drugs. However, traditional methods of organic synthesis are mainly based on thermal cycloaddition reaction; thus, the exploration of new strategies for the rapid assembly of N-heterocycles under mild conditions is highly desirable. Here, we developed a new method that visible light along with 1 mol % cercosporin, which is one of the perylenequinonoid pigments with excellent properties of photosensitization and can be easily produced by a new isolated endophytic fungus Cercospora sp. JNU001 strain with high yield through microbial fermentation, catalyzes the synthesis of 1,2,3-thiadiazoles and 1,4,5,6-tetrahydropyridazines by a photocatalytic process with good regioselectivity and broad functional-group compatibility under mild conditions. Thus, a bridge between microbial fermentation and organic photocatalysis for the construction of nitrogen-containing heterocycles was set up in a sustainable, environmentally friendly manner.
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Affiliation(s)
| | | | | | | | | | - Shuping Huang
- College of Chemistry , Fuzhou University, Fuzhou , Fujian 350108 , P. R. China
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48
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Chen YJ, He YH, Guan Z. Metal-free visible-light-promoted thiocyanation/cyclization cascade for the synthesis of thiocyanato-containing isoquinolinediones. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.04.053] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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49
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Cen J, Wu Y, Li J, Huang L, Wu W, Zhu Z, Yang S, Jiang H. Switchable Reactivity between Vinyl Azides and Terminal Alkyne by Nano Copper Catalysis. Org Lett 2019; 21:2090-2094. [PMID: 30869904 DOI: 10.1021/acs.orglett.9b00373] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A novel nano copper-catalyzed substrate-dependent chemodivergent transformation of vinyl azides with a terminal alkyne is disclosed. 2,5-Disubstituted pyrroles were selectively obtained in high yield with aryl alkynes and aliphatic alkynes, whereas 2,3,4-trisubstituted pyrroles were formed with silylated alkynes. This switchable method provides a controllable and facile access to both multisubstituted pyrrole scaffolds with high efficiency, excellent regioselectivity, and good functional group compatibility.
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Affiliation(s)
- Jinghe Cen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Yaodan Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Jianxiao Li
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Liangbin Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Zhongzhi Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Shaorong Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
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50
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2-Amino-4-arylthiazoles through One-Pot Transformation of Alkylarenes with NBS and Thioureas. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900100] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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