1
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Huang Q, Liu J, Wan JP. Electrochemical Enaminone-Thioamide Annulation and Thioamide Dimeric Annulation for the Tunable Synthesis of Thiazoles and 1,2,4-Thiadiazole. Org Lett 2024; 26:5263-5268. [PMID: 38875707 DOI: 10.1021/acs.orglett.4c01532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2024]
Abstract
A green and sustainable electrochemical oxidative cyclization of enaminones with thioamides under metal- and oxidant-free conditions has been developed, providing an efficient approach for thiazole synthesis. Furthermore, 1,2,4-thiadiazoles can be selectively accessed via the electrochemical dimerization of thioamides in the absence of enaminones.
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Affiliation(s)
- Qihui Huang
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Jianchao Liu
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Jie-Ping Wan
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
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2
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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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3
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Kumar S, Ali Shah B. Exploring the Divergent Reactivity of Vinyl Radicals Emanating from Alkynes and Thiols via Photoredox Catalysis. Chem Asian J 2023; 18:e202300693. [PMID: 37656003 DOI: 10.1002/asia.202300693] [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: 08/12/2023] [Revised: 08/30/2023] [Accepted: 09/01/2023] [Indexed: 09/02/2023]
Abstract
Organic chemistry has seen a surge in visible-light-driven transformations, which offer unique reaction pathways and access to new synthetic possibilities. We aim to provide a comprehensive understanding of state-of-the-art photo-mediated alkyne functionalization, with a focus on the reactive behavior of vinyl radicals. This review outlines our contributions to the field, including developing new methods for forming carbon-carbon and carbon-heteroatom bonds.
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Affiliation(s)
- Sourav Kumar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180001, India
| | - Bhahwal Ali Shah
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180001, India
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4
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Lei ZL, Liu TC, Cui FH, Pan YM, Li SH, Tang HT. Electrochemical Promoted Three-Component Trifluoromethylation/Spirocyclization Reaction of N-Arylsulfonylacrylamides to 4-Azaspiro[4.5]decanes. Org Lett 2023; 25:6001-6005. [PMID: 37548921 DOI: 10.1021/acs.orglett.3c02143] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
An electrochemical facilitated three-component trifluoromethylation/spirocyclization reaction of N-(arylsulfonyl)acrylamides, CF3SO2Na, and H2O has been developed. Without the requirement of chemical oxidants, a number of unexplored trifluoromethylated 4-azaspiro[4.5]decanes were obtained in satisfactory yields under mild conditions. This work provides a new synthetic strategy for fluorine-containing spirocyclic compounds and shows a new perspective for the reactivity study of N-(arylsulfonyl)acrylamides.
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Affiliation(s)
- Zhi-Long Lei
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Tai-Chen Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Fei-Hu Cui
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Ying-Ming Pan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Shu-Hui Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Hai-Tao Tang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People's Republic of China
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5
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Wang M, Ma J, Wang H, Hu F, Sun B, Tan T, Li M, Huang G. Brønsted acid-promoted ring-opening and annulation of thioamides and 2 H-azirines to synthesize 2,4,5-trisubstituted thiazoles. Org Biomol Chem 2023. [PMID: 37376913 DOI: 10.1039/d3ob00245d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
In this study, a metal-free synthesis of 2,4,5-trisubstituted thiazoles using 2H-azirines and thioamides is disclosed. Under the catalysis of HClO4, the protocol was realized through a novel chemical bond breaking of 2H-azirine, which is usually achieved using a metal catalyst. It provides an efficient and green route for the synthesis of substituted thiazoles with a broad substrate scope. Preliminary mechanistic studies show that such a reaction may involve a ring-opening reaction, annulation, and a hydrogen atom rearrangement process.
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Affiliation(s)
- Meng Wang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China.
| | - Jingyi Ma
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China.
| | - Hesong Wang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China.
| | - Fangpeng Hu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China.
| | - Bo Sun
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China.
| | - Taiyan Tan
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China.
| | - Minglang Li
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China.
| | - Guosheng Huang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China.
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6
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Buil M, Esteruelas MA, Oñate E, Picazo NR. Osmathiazole Ring: Extrapolation of an Aromatic Purely Organic System to Organometallic Chemistry. Organometallics 2023; 42:327-338. [PMID: 38601006 PMCID: PMC11005464 DOI: 10.1021/acs.organomet.2c00631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Indexed: 02/11/2023]
Abstract
An osmathiazole skeleton has been generated starting from the cation of the salt [OsH(OH)(≡CPh)(IPr)(PiPr3)]OTf (1; IPr = 1,3-bis(2,6-diisopropylphenyl)imidazolylidene; OTf = CF3SO3) and thioacetamide; its aromaticity degree was compared with that of thiazole, and its aromatic reactivity was confirmed through a reaction with phenylacetylene. Salt 1 reacts with the thioamide to initially afford the synthetic intermediate [OsH{κ2-N,S-[NHC(CH3)S]}(≡CPh)(IPr)(PiPr3)]OTf (2). Thioamidate and alkylidyne ligands of 2 couple in acetonitrile at 70 °C, forming a 1:1 mixture of the salts [OsH{κ2-C,S-[C(Ph)NHC(CH3)S]}(CH3CN)(IPr)(PiPr3)]OTf (3) and [Os{κ2-C,S-[CH(Ph)NHC(CH3)S]}(CH3CN)3(IPr)]OTf (4). Treatment of 3 with potassium tert-butoxide produces the NH-deprotonation of its five-membered ring and gives OsH{κ2-C,S-[C(Ph)NC(CH3)S]}(IPr)(PiPr3) (5). The osmathiazole ring of 5 is slightly less aromatic than the osmathiazolium cycle of 3 and the purely organic thiazole. However, it is more aromatic than related osmaoxazoles and osmaoxazoliums. There are significant differences in behavior between 3 and 5 toward phenylacetylene. In acetonitrile, the cation of 3 loses the phosphine and adds the alkyne to afford [Os{η3-C3,κ1-S-[CH2C(Ph)C(Ph)NHC(CH3)S]}(CH3CN)2(IPr)]OTf (6), bearing a functionalized allyl ligand. In contrast, the osmathiazole ring of 5 undergoes a vicarious nucleophilic substitution of hydride, by acetylide, via the dihydride OsH2(C≡CPh){κ2-C,S-[C(Ph)NC(CH3)S]}(IPr)(PiPr3) (7), which releases H2 to yield Os(C≡CPh){κ2-C,S-[C(Ph)NC(CH3)S]}(IPr)(PiPr3) (8).
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Affiliation(s)
- María
L. Buil
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Miguel A. Esteruelas
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Nieves R. Picazo
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
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7
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Wu J, Wei C, Zhao F, Du W, Geng Z, Xia Z. Gold(I)-Catalyzed Tandem Cyclization/Hydroarylation of o-Alkynylphenols with Haloalkynes. J Org Chem 2022; 87:14374-14383. [PMID: 36194643 DOI: 10.1021/acs.joc.2c01804] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A convenient and mild protocol for the gold-catalyzed intermolecular coupling of o-alkynylphenols with haloalkynes to give vinyl benzofurans is reported. In this work, the gold catalyst SIPrAuCl and the co-catalyst NaBARF would corporately promote the intramolecular cyclization of the o-alkynylphenol to benzofuran, and then a selective hydroarylation of benzofuran to haloalkyne was catalyzed by the same catalysts. Computational studies suggest that the hydroarylation process takes place via a concerted nucleophilic attack pathway of the benzofuran to the C2 carbon of the activated haloalkyne, and reveal the original driving force of this hydroarylation process.
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Affiliation(s)
- Jiawen Wu
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Cunbo Wei
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Fen Zhao
- School of Chemistry and Environment, Yunnan Minzu University, Yuehua Street, Kunming 650500, China
| | - Wenqian Du
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zhishuai Geng
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zhonghua Xia
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
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8
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Fang S, Ling H, Zeng C, Li M, Jiang H, Wu W. Palladium-Catalyzed Sequential Three-Component Cross-Coupling to 1,3-Dienes: Employing Alkenes as Hydride and Alkenyl Donors. J Org Chem 2022; 87:12816-12830. [PMID: 36099344 DOI: 10.1021/acs.joc.2c01406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This report discloses a novel Pd-catalyzed sequential three-component multiple reaction of alkenes, bromoalkynes, and boronic acids using alkenes as hydride and alkenyl donors, leading to highly stereoselective assembly of (Z,E)-1,3-diene derivatives. Mechanistic studies demonstrate that the generation and reutilization of palladium hydride species are critical to the success of this transformation. In addition, the good functional group compatibility, late-stage modification, and investigation of photophysical properties of 1,3-diene products illustrate the synthetic value of this strategy.
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Affiliation(s)
- Songjia Fang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China
| | - Hongling Ling
- School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China
| | - Caijin Zeng
- School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China
| | - Meng Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China
| | - Wanqing Wu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China
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9
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Bhaumick P, Kumar R, Acharya SS, Parvin T, Choudhury LH. Multicomponent Synthesis of Fluorescent Thiazole-Indole Hybrids and Thiazole-Based Novel Polymers. J Org Chem 2022; 87:11399-11413. [PMID: 35998330 DOI: 10.1021/acs.joc.2c00922] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report an efficient multicomponent reaction for the synthesis of trisubstituted thiazoles involving a one-pot C-C, C-N, and C-S bond-forming process from the readily available starting materials. The reaction of arylglyoxal, indole, and aryl thioamides in the acetic acid medium under sealed heating conditions provided 3-(2,4-diarylthiazol-5-yl)-1H-indoles (4) in good to excellent yields. Using a similar reaction strategy, the reaction of arylglyoxal, aryl thioamide, and 2,5-dihydroxy-1,4-benzoquinone provided structurally interesting bis-thiazoles having dihydroxy-1,4-benzoquinone linker (9). All of the products were fully characterized by spectroscopic techniques. We also recorded single-crystal X-ray diffraction (XRD) of compounds 4b and 9a for unambiguous structure determination. Indole-linked trisubstituted thiazoles (4) exhibit prominent fluorescence properties. The relative fluorescence quantum yields of all of the thiazole-linked indoles were measured in the dimethyl sulfoxide (DMSO) medium with respect to quinine sulfate in 0.1 M H2SO4 as reference. The scope of this reaction was further explored by preparing novel polymers 11a and 11b using naphthalene/benzene-1,4-bis(carbothioamide) in multicomponent polymerization.
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Affiliation(s)
- Prabhas Bhaumick
- Department of Chemistry, Indian Institute of Technology─Patna, Patna 801106, India
| | - Rohit Kumar
- Department of Chemistry, Indian Institute of Technology─Patna, Patna 801106, India
| | - Swadhin S Acharya
- Department of Chemistry, Indian Institute of Technology─Patna, Patna 801106, India
| | - Tasneem Parvin
- Department of Chemistry, National Institute of Technology─Patna, Ashok Rajpath, Patna 800005, India
| | - Lokman H Choudhury
- Department of Chemistry, Indian Institute of Technology─Patna, Patna 801106, India
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10
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Tan Y, Jiang W, Ni P, Fu Y, Ding Q. One‐Pot Synthesis of Quinazolines via Elemental Sulfur‐Mediated Oxidative Condensation of Nitriles and 2‐(Aminomethyl)anilines. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200537] [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)
- Yuxing Tan
- Jiangxi Normal University Yaohu Campus CHINA
| | - Wujiu Jiang
- Jiangxi Normal University Yaohu Campus CHINA
| | | | - Yang Fu
- Jiangxi Normal University CHINA
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11
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Lu YX, Zhu LW, Lv TK, Chen BH. Synthesis of 2,4-diarylthiazoles throuth Palladium-catalyzed cyclization of sulfoxonium ylides and benzothioamide. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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12
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Ji X, Nie J, Peng X, Hu J, Xu X, Huang Y, Li Y, Jiang H. Palladium-Catalyzed Cross Haloalkynylation of Haloalkynes. Org Lett 2022; 24:3384-3388. [PMID: 35481743 DOI: 10.1021/acs.orglett.2c01161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we have developed a robust Pd-catalyzed haloalkynylation of haloalkynes for the synthesis of dihaloalkenyne derivatives. This cross-haloalkynylation reaction proceeds in a highly chemo- and regioselective manner under mild conditions in the presence of two slightly structurally different haloalkynes and shows strong functional group tolerance under ligand- and base-free conditions.
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Affiliation(s)
- Xiaoliang Ji
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
| | - Jinli Nie
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
| | - Xin Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
| | - Jinhui Hu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
| | - Xuetao Xu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
| | - Yubing Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
| | - Yibiao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
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13
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Ziyaei Halimehjani A, Saeb M, Khalesi M. Multicomponent synthesis of fully substituted thiazoles using glycine-based dithiocarbamates, acetic anhydride and nitroalkenes. Org Biomol Chem 2022; 20:3763-3766. [PMID: 35420106 DOI: 10.1039/d2ob00448h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Reaction of glycine-based dithiocarbamates with nitroalkenes in the presence of acetic anhydride was utilized for the synthesis of fully substituted 2-(alkylsulfanyl)-4-(nitroalkyl)-5-acyloxy-1,3-thiazoles. The reaction proceeds via the in situ formation of thiazol-5(4H)-one from glycine-based dithiocarbamates, followed by the Michael addition of this intermediate to nitroalkenes, aromatization, and esterification reaction cascade. This new one-pot three-component reaction afforded a diverse library of fully substituted thiazoles in high to excellent yields under solvent-free conditions.
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Affiliation(s)
- Azim Ziyaei Halimehjani
- Faculty of Chemistry, Kharazmi University, P. O. Box 15719-14911, 49 Mofateh St., Tehran, Iran.
| | - Maryam Saeb
- Faculty of Chemistry, Kharazmi University, P. O. Box 15719-14911, 49 Mofateh St., Tehran, Iran.
| | - Maryam Khalesi
- Faculty of Chemistry, Kharazmi University, P. O. Box 15719-14911, 49 Mofateh St., Tehran, Iran.
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14
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Fernández-Canelas P, Barrio P, González JM. Merging gold catalysis and haloethynyl frames: emphasis on halide-shift processes. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153857] [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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15
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Srivastava V, Singh PK, Tivari S, Singh PP. Visible light photocatalysis in the synthesis of pharmaceutically relevant heterocyclic scaffolds. Org Chem Front 2022. [DOI: 10.1039/d1qo01602d] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Visible light and photoredox catalysis have emerged as a powerful and long-lasting tool for organic synthesis, demonstrating the importance of a variety of chemical bond formation methods.
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Affiliation(s)
- Vishal Srivastava
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj 211002, India
| | - Pravin K. Singh
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj 211002, India
| | - Shraddha Tivari
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj 211002, India
| | - Praveen P. Singh
- Department of Chemistry, United College of Engineering & Research, Naini, Prayagraj 211010, India
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16
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Zhou X, Zhang N, Li Y, Mo Z, Ma X, Chen Y, Xu Y. Metal-free synthesis of 3-sulfonyl-5-selanyl-4a,8a-dihydro-2H-chromen-6(5H)-ones via visible light driven intermolecular cascade cyclization of alkyne-tethered cyclohexadienones and selenosulfonates. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.07.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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17
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Xu H, Chen R, Ruan H, Ye R, Meng L. Visible‐Light‐Promoted Formation of C—C and C—P Bonds Derived from Evolution of Bromoalkynes under Additive‐Free Conditions: Synthesis of 1,1‐Dibromo‐1‐en‐3‐ynes and Alkynylphosphine Oxides. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000546] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Hailong Xu
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University Huaibei Anhui 235000 China
| | - Rui Chen
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University Huaibei Anhui 235000 China
| | - Hongjie Ruan
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University Huaibei Anhui 235000 China
| | - Ruyi Ye
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University Huaibei Anhui 235000 China
| | - Ling‐Guo Meng
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University Huaibei Anhui 235000 China
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18
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Deng X, Qian R, Zhou H, Yu L. Organotellurium-catalyzed oxidative deoximation reactions using visible-light as the precise driving energy. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.09.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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19
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Zhang ZQ, Xu YH, Dai JC, Li Y, Sheng J, Wang XS. Copper-Catalyzed Trifluoromethylation/Cyclization of Alkynes for Synthesis of Dioxodibenzothiazepines. Org Lett 2021; 23:2194-2198. [PMID: 33635668 DOI: 10.1021/acs.orglett.1c00344] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A facile and efficient approach for the synthesis of the CF3-containing dioxodibenzothiazepines has been developed via copper-catalyzed trifluoromethylation/cyclization of alkynes utilizing a radical relay strategy. This method has demonstrated low catalyst loading, high regiocontrol, and broad scope under mild conditions. Good compatibility for the N-protecting group, gram-scale experiment, and further derivation of product prove the versatility of this transformation.
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Affiliation(s)
- Zi-Qi Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Yi-Hao Xu
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Jing-Cheng Dai
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Yan Li
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Jie Sheng
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Xi-Sheng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
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20
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Liu H, Zhang J, Huang G, Zhou Y, Chen Y, Xu Y. Visible Light‐Promoted Selenylation/Cyclization of Enaminones toward the Formation of 3‐Selanyl‐4H‐Chromen‐4‐Ones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001474] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Hao‐Yang Liu
- Pharmacy School of Guilin Medical University Guilin 541004 People's Republic of China
| | - Jia‐Rong Zhang
- Pharmacy School of Guilin Medical University Guilin 541004 People's Republic of China
| | - Guo‐Bao Huang
- Key Laboratory of Agricultural Resources Chemistry and Biotechnology College of Chemistry and Food Science of Yulin Normal University Yulin 537000 People's Republic of China
| | - Yi‐Huan Zhou
- Pharmacy School of Guilin Medical University Guilin 541004 People's Republic of China
| | - Yan‐Yan Chen
- Pharmacy School of Guilin Medical University Guilin 541004 People's Republic of China
| | - Yan‐Li Xu
- Pharmacy School of Guilin Medical University Guilin 541004 People's Republic of China
- Key Laboratory of Agricultural Resources Chemistry and Biotechnology College of Chemistry and Food Science of Yulin Normal University Yulin 537000 People's Republic of China
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21
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Yu W, Zhu B, Shi F, Zhou P, Wu W, Jiang H. Selective Synthesis of Non‐Aromatic Five‐Membered Sulfur Heterocycles from Alkynes by using a Proton Acid/
N
‐Chlorophthalimide System. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202010889] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Wentao Yu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
| | - Baiyao Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
| | - Fuxing Shi
- State Key Laboratory of Chemical Resource Engineering Institute of Computational Chemistry College of Chemistry Beijing University of Chemical Technology Beijing China
| | - Peiqi Zhou
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
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22
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Abstract
Photocatalytic deoximation reaction was found to be an autocatalytic process that occurs via free-radical mechanism. Understanding the mechanism may help chemical engineers to develop related techniques to avoid the decomposition of oximes.
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Affiliation(s)
- Hongjia Li
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- P. R. China
| | - Xiaobi Jing
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- P. R. China
| | - Yaocheng Shi
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- P. R. China
| | - Lei Yu
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- P. R. China
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23
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Chen H, Yan Y, Zhang N, Mo Z, Xu Y, Chen Y. Visible-Light-Induced Cyclization/Aromatization of 2-Vinyloxy Arylalkynes: Synthesis of Thio-Substituted Dibenzofuran Derivatives. Org Lett 2020; 23:376-381. [DOI: 10.1021/acs.orglett.0c03876] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hui Chen
- College of Pharmacy, Guilin Medical University, Guilin 541004, People’s Republic of China
| | - Yunyun Yan
- Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, People’s Republic of China
| | - Niuniu Zhang
- College of Pharmacy, Guilin Medical University, Guilin 541004, People’s Republic of China
| | - Zuyu Mo
- College of Pharmacy, Guilin Medical University, Guilin 541004, People’s Republic of China
| | - Yanli Xu
- College of Pharmacy, Guilin Medical University, Guilin 541004, People’s Republic of China
- Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science of Yulin Normal University, Yulin 537000, People’s Republic of China
| | - Yanyan Chen
- College of Pharmacy, Guilin Medical University, Guilin 541004, People’s Republic of China
- Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science of Yulin Normal University, Yulin 537000, People’s Republic of China
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Yu W, Zhu B, Shi F, Zhou P, Wu W, Jiang H. Selective Synthesis of Non‐Aromatic Five‐Membered Sulfur Heterocycles from Alkynes by using a Proton Acid/
N
‐Chlorophthalimide System. Angew Chem Int Ed Engl 2020; 60:1313-1322. [DOI: 10.1002/anie.202010889] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 09/09/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Wentao Yu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
| | - Baiyao Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
| | - Fuxing Shi
- State Key Laboratory of Chemical Resource Engineering Institute of Computational Chemistry College of Chemistry Beijing University of Chemical Technology Beijing China
| | - Peiqi Zhou
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
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25
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Ziyaei Halimehjani A, Khalesi M, Breit B. Amino Acid‐Based Dithiocarbamates as Efficient Intermediates for Diversity‐Oriented Synthesis of Thiazoles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001050] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Azim Ziyaei Halimehjani
- Faculty of Chemistry Kharazmi University P. O. Box 15719‐14911, 49 Mofateh Street Tehran Iran
- Department Institut für Organische Chemie Albert‐Ludwigs‐Universität Freiburg Albertstrasse 21 79104 Freiburg im Breisgau Germany
| | - Maryam Khalesi
- Faculty of Chemistry Kharazmi University P. O. Box 15719‐14911, 49 Mofateh Street Tehran Iran
| | - Bernhard Breit
- Department Institut für Organische Chemie Albert‐Ludwigs‐Universität Freiburg Albertstrasse 21 79104 Freiburg im Breisgau Germany
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