1
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Bodala V, Podugu RL, Yettula K, Kadiri SK, Vidavalur S. Substituent-Oriented Synthesis of Substituted Pyridines/Pyrido[3,2-C]coumarins via Sequential Reactions of α-H and Me/Aryl Substituted Oxime Acetates and 3-Formylchromones. J Org Chem 2024. [PMID: 39196990 DOI: 10.1021/acs.joc.4c00899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2024]
Abstract
A facile one pot sequential and highly chemoselective synthesis of substituted pyridines/pyrido[3,2-c]coumarins has been developed from oxime acetates and 3-formylchromones in the presence of FeCl2. This reaction was oriented by different substituents on the α-position (H, methyl/aryl) of oxime acetates. Mechanistic investigations suggested that substituted pyridines were formed via intramolecular aza-Michael addition followed by ring opening, while pyrido[3,2-c]coumarins were formed via intermolecular Michael addition. Besides, anti-TB activity was screened for some of the synthesized pyridines. Among the tested compounds, 3ga, 3ha, 3ja, 3ma, 3ac, 4pa, 4pb and 4sb were found to have good activity with an MIC of 12.5 μg/mL.
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Affiliation(s)
- Varaprasad Bodala
- Department of Organic Chemistry and FDW, School of Chemistry, AU College of Science and Technology, Andhra University, Visakhapatnam, India, 500003
| | - Rajitha Lakshmi Podugu
- Department of Organic Chemistry and FDW, School of Chemistry, AU College of Science and Technology, Andhra University, Visakhapatnam, India, 500003
| | - Kumari Yettula
- Department of Organic Chemistry and FDW, School of Chemistry, AU College of Science and Technology, Andhra University, Visakhapatnam, India, 500003
| | - Sunanda Kumari Kadiri
- Department of MicrobiologyAndhra University, AU College of Science and Technology, Andhra University, Visakhapatnam, India, 530003
| | - Siddaiah Vidavalur
- Department of Organic Chemistry and FDW, School of Chemistry, AU College of Science and Technology, Andhra University, Visakhapatnam, India, 500003
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2
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Ma Y, Xu T, Yuan Y, Chen Y, Xiao F, Deng GJ. Copper-Catalyzed Four-Component Domino Cyclization for the Synthesis of 2-Methylpyridines. J Org Chem 2024. [PMID: 39153208 DOI: 10.1021/acs.joc.4c00620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2024]
Abstract
A convenient protocol for synthesis of unsymmetrical 2-methylpyridines from acetyl ketones, ammonium salts and tertiary amines is described. The construction of two C-C bonds and two C-N bonds via [2 + 2 + 1 + 1] four-component domino cyclization reaction is achieved using Cu(OTf) as catalyst in one pot. This cyclization reaction shows good selectivity and produces multisubstituted 2-methylpyridine derivatives in good yields with various functional groups.
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Affiliation(s)
- Yanfeng Ma
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Tianci Xu
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Yuezhou Yuan
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Ya Chen
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Fuhong Xiao
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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3
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Gao H, Zhou L, Wan JP, Liu Y. Rongalite as C1 Synthon in the Synthesis of Divergent Pyridines and Quinolines. J Org Chem 2023. [PMID: 37171406 DOI: 10.1021/acs.joc.3c00428] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Rongalite has been used as a cheap and efficient carbon synthon for the synthesis of divergent N-heteroaromatics, including different pyridines and quinolines. The selective synthesis of different products can be achieved by employing enaminones or enaminones/anilines as reaction partners. In addition, compared with the reaction using conventional aldehyde synthons, rongalite displays an evident advantage in providing products with considerably higher product yields under milder conditions. The GC-MS analysis of the reaction process has been performed to probe the possible reaction mechanism.
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Affiliation(s)
- Huan Gao
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Liyun Zhou
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Jie-Ping Wan
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Yunyun Liu
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
- International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
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4
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Bodala V, Podugu RL, Yettula K, Gollamudi P, Vidavalur S, Pulipaka S. Iron-Catalysed [3+3] Annulation of Oxime Acetates and Enaminones towards the Synthesis of Multi-Substituted Pyridines. Chem Asian J 2023; 18:e202201004. [PMID: 36461710 DOI: 10.1002/asia.202201004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/22/2022] [Indexed: 12/04/2022]
Abstract
A direct access to unsymmetrical and symmetrical multi-substituted pyridines has been accomplished via iron-catalysed [3+3] annulation of oxime acetates with enaminones. This protocol is featured by easily available starting materials, no requirement of expensive additives and ligands, operational simplicity, and good tolerance with diverse functional groups.
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Affiliation(s)
- Varaprasad Bodala
- Department of Chemistry, Andhra University, Visakhapatnam, 530003, India
| | | | - Kumari Yettula
- Department of Chemistry, Andhra University, Visakhapatnam, 530003, India
| | - Padmarao Gollamudi
- Department of Chemistry, Dr. B. R. Ambedkar University, Srikakulam, 532410, India
| | - Siddaiah Vidavalur
- Department of Chemistry, Andhra University, Visakhapatnam, 530003, India
| | - Shyamala Pulipaka
- Department of Chemistry, Andhra University, Visakhapatnam, 530003, India
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5
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Geng M, Huang M, Kuang J, Fang W, Miao M, Ma Y. Application of N, N-Dimethylethanolamine as a One-Carbon Synthon for the Synthesis of Pyrrolo[1,2- a]quinoxalines, Quinazolin-4-ones, and Benzo[4,5]imidazoquinazolines via [5 + 1] Annulation. J Org Chem 2022; 87:14753-14762. [PMID: 36254464 DOI: 10.1021/acs.joc.2c02079] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The synthesis of N-heterocycles composes a significant part of synthetic chemistry. In this report, a Cu(II)-catalyzed green and efficient synthesis of pyrrolo[1,2-a]quinoxaline, quinazolin-4-one, and benzo[4,5]imidazoquinazoline derivatives was developed, employing N,N-dimethylethanolamine (DMEA) as a C1 synthon. Green oxidant O2 is critical in these transformations, facilitating the formation of a key intermediate─a reactive iminium ion. The method conducted under mild conditions is compatible with a diversity of functional groups, providing an appealing alternative to the previously developed protocols.
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Affiliation(s)
- Meiqi Geng
- Institute of Advanced Studies and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, 318000 Zhejiang, Taizhou, China.,Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, 310018 Zhejiang, Hangzhou, China
| | - Minzhao Huang
- Institute of Advanced Studies and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, 318000 Zhejiang, Taizhou, China
| | - Jinqiang Kuang
- Institute of Advanced Studies and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, 318000 Zhejiang, Taizhou, China
| | - Weiwei Fang
- International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University (NFU), Nanjing 210037, China
| | - MaoZhong Miao
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, 310018 Zhejiang, Hangzhou, China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, 318000 Zhejiang, Taizhou, China
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6
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Patel AK, Rathor SS, Samanta S. Regioselective access to di- and trisubstituted pyridines via a metal-oxidant-solvent-free domino reaction involving 3-chloropropiophenones. Org Biomol Chem 2022; 20:6759-6765. [PMID: 35972042 DOI: 10.1039/d2ob01193j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A remarkable metal-oxidant-solvent- and base-free domino route for regioselective access to a wide range of 2,4-di- and 2,3,4/6-trisubstituted pyridines including carbo- and heterocyclic fused pyridines is reported. This [3C + 2C + 1N] cyclization reaction occurs between 3-chloropropiophenones (3C units), enolizable acyclic/cyclic ketones (2C sources) and NH4OAc as a robust N source under neat conditions under an open atmosphere, producing new C=C and C=N-C bonds in highly chemo- and regioselective manners. Interestingly, this eco-friendly method has many positive features: excellent functional group tolerance, broad substrate scope, good to excellent regioselectivities, promising yields, no-unwanted products, neutral reaction conditions and appropriateness for large-scale synthesis. Mechanism studies reveal that the in situ generated β-amino ketone from 3-chloropropiophenone and an ammonium salt undergoes C=N bond formation with a ketone followed by an intramolecular cyclization process (C=C bond), which are the decisive steps for pyridine synthesis.
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Affiliation(s)
- Ashvani Kumar Patel
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, 453552, India.
| | - Shikha Singh Rathor
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, 453552, India.
| | - Sampak Samanta
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, 453552, India.
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7
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Cao S, Li H, Teng X, Si H, Chen R, Zhu Y. Access to Fully Substituted Dihydropyrimidines via Dual Copper/Photoredox‐Catalyzed Domino Annulation of Oxime Esters and Imines. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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8
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One-pot Hantzsch synthesis of unsymmetrical substituted pyridines via condensation of 1, 3-dicarbonyl compounds with DMF and 1, 1-dichloro-2-nitroethene. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Metal-free synthesis of 3-trifluoromethyl-1,2,4-triazoles via oxidative cyclization of trifluoroacetimidohydrazides with N,N-dimethylformamide as carbon synthons. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.06.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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10
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Yadav A, Yadav A, Tripathi S, Dewaker V, Kant R, Yadav PN, Srivastava AK. Copper-Catalyzed Oxidative [3 + 2]-Annulation of Quinoxalin-2(1 H)-one with Oxime Esters toward Functionalized Pyrazolo[1,5- a]quinoxalin-4(5 H)-ones as Opioid Receptor Modulators. J Org Chem 2022; 87:7350-7364. [PMID: 35587158 DOI: 10.1021/acs.joc.2c00563] [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
Pyrazolo[1,5-a]quinoxalin-4(5H)-one derivatives as novel opioid receptor modulators have been synthesized via copper-catalyzed oxidative [3 + 2]-annulation of quinoxalin-2(1H)-one and oxime-O-acetates. This hydrazine-free C-C and N-N bond formation strategy starts with the generation of C2N1 synthon using oxime acetate, which reacts in a [3 + 2] manner with quinoxalin-2(1H)-one, followed by oxidative aromatization. The synthesized compounds were tested against opioid receptors, of which eight compounds exhibited an antagonistic effect with EC50 < 5 μM at various opioid receptors. Molecular docking studies were performed to identify the binding of active pyrazolo[1,5-a]quinoxalin-4(5H)-one ligands with hKOR protein. Docking results indicated that compounds 3d and 3g participate in hydrogen bonding with the hydroxyl group of T111 of the active site pocket residue.
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Affiliation(s)
- Anamika Yadav
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Anubhav Yadav
- Neuroscience and Ageing Biology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Shashank Tripathi
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Varun Dewaker
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Ruchir Kant
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Prem Narayan Yadav
- Neuroscience and Ageing Biology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ajay Kumar Srivastava
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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11
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Liu J, Lin H, Jiang H, Huang L. Polysubstituted Indole Synthesis via Palladium/Norbornene Cooperative Catalysis of Oxime Esters. Org Lett 2022; 24:484-489. [PMID: 34978457 DOI: 10.1021/acs.orglett.1c03679] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Polysubstituted indoles are prevalent in pharmaceuticals, agrochemicals, and organic materials. Presented herein is the fact that polyfunctionalized indoles can be efficiently constructed from easily accessible oxime esters and aryl iodides, involving a palladium/norbornene synergistic synthesis. The reaction is enabled by a unique class of electrophiles in palladium/norbornene cooperative catalysis, which are oxime esters derived from simple ketone. The broad substrate scope and high functional group tolerance could make this method attractive for the synthesis of polysubstituted indoles.
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Affiliation(s)
- Jiechun Liu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Haojiang Lin
- 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
| | - Liangbin Huang
- 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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12
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Kudale VS, Zheng S, Huang SH, Chang YL, Wang JJ. A metal-free strategy for the cross-dehydrogenative coupling of 1,3-dicarbonyl compounds with 2-methoxyethanol. Org Biomol Chem 2022; 20:1226-1230. [PMID: 35040852 DOI: 10.1039/d1ob02290c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Here, we report a metal-free approach for the construction of methylene-bridged bis-1,3-dicarbonyl compounds via cross-dehydrogenative coupling of 1,3-dicarbonyl compounds with 2-methoxyethanol. In addition, we have extended this methodology to synthesize tetra-substituted pyridine derivatives using 1,3-dicarbonyl, 2-methoxyethanol and NH4OAc in one step. The key advantages include accepting a wide range of substrates, utilizing O2 as the sole oxidant, and synthesizing biologically active compounds such as 1,4-dihydropyridine and pyrazole.
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Affiliation(s)
- Vishal Suresh Kudale
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan 1st Rd, Sanmin District, Kaohsiung City, 807, Taiwan.
| | - Sheng Zheng
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan 1st Rd, Sanmin District, Kaohsiung City, 807, Taiwan.
| | - Sheng-Hua Huang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan 1st Rd, Sanmin District, Kaohsiung City, 807, Taiwan.
| | - Yu-Lun Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan 1st Rd, Sanmin District, Kaohsiung City, 807, Taiwan.
| | - Jeh-Jeng Wang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan 1st Rd, Sanmin District, Kaohsiung City, 807, Taiwan. .,Department of Medicinal Research, Kaohsiung Medical University Hospital, No. 100, Tzyou 1st Rd, Sanmin District, Kaohsiung City, 807, Taiwan
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13
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Zhang Y, Liu Z, Zhu T, Huang Y, Fan W, Huang D. Synthesis of methylene-bridged α,β-unsaturated ketones: α-C sp3-H methylenation of aromatic ketones using Selectfluor as a mild oxidant. Org Biomol Chem 2022; 20:415-419. [PMID: 34908092 DOI: 10.1039/d1ob02043a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A three starting material four component reaction (3SM-4CR) is developed for the synthesis of α,β-unsaturated ketones and β-amino ketones in good yields. The reaction employs tetramethylethylenediamine (TMEDA) as a methylene and terminal olefin source, and Selectfluor as a mild oxidant. TMEDA worked as a dual synthon to provide two carbons in this metal-free transformation process. The scope and versatility of the methods have been demonstrated with 23 examples. A Selectfluor-promoted oxidative reaction mechanism is proposed based on the results of the experimental studies.
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Affiliation(s)
- Yuan Zhang
- Fujian Normal University, College of Chemistry and Materials Science, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Zhiqi Liu
- Fujian Normal University, College of Chemistry and Materials Science, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Tingyu Zhu
- Fujian Normal University, College of Chemistry and Materials Science, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Ying Huang
- Fujian Normal University, College of Chemistry and Materials Science, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Weibin Fan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Deguang Huang
- Fujian Normal University, College of Chemistry and Materials Science, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
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14
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Cao S, Ma C, Teng X, Chen R, Li Y, Yuan W, Zhu Y. Facile synthesis of fully substituted 1 H-imidazoles from oxime esters via dual photoredox/copper catalyzed multicomponent reactions. Org Chem Front 2022. [DOI: 10.1039/d2qo01475k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A novel and efficient photoredox/copper cocatalyzed domino cyclization of oxime esters, aldehydes, and amines has been achieved, affording a broad range of fully substituted 1H-imidazoles in good yields.
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Affiliation(s)
- Shujun Cao
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Chongchong Ma
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xinjie Teng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Rongshun Chen
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yun Li
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Weidong Yuan
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
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15
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Qin Z, Zhang R, Ying S, Ma Y. Iron-catalyzed [3+2+1] annulation of 2-aminobenzimidazoles/3-aminopyrazoles and aromatic alkynes using N,N-dimethylaminoethanol as one carbon synthon for the synthesis of pyrimido[1,2-a]benzimidazoles and pyrimido[1,2-b]indazoles. Org Chem Front 2022. [DOI: 10.1039/d2qo01008a] [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 simple and efficient method for the synthesis of pyrimido[1,2-a]benzimidazoles and pyrimido[1,2-b]indazoles from 2-aminobenzimidazoles/3-aminoindazoles, alkynes and N,N-dimethylaminoethanol in a three-component [3+2+1] annulation catalyzed by FeCl3 has been established, where N,N-dimethylaminoethanol...
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16
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Zeng M, Liu YX, Zheng JH, Zhao L, Zhu QH, Jiang D, Ling Y, Liu W, Zeng SX. Direct α-methylenation of triazines to terminal olefins with DMA. NEW J CHEM 2022. [DOI: 10.1039/d2nj04417j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We report an efficient metal (Cu or Ni)-catalysed α-methylenation of triazines to terminal olefins using DMA as a one-carbon source. Various substituted triazine derivatives are suitable for this reaction.
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Affiliation(s)
- Ming Zeng
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Yi-xuan Liu
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Jian-hui Zheng
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Lan Zhao
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Qi-han Zhu
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Dengzhao Jiang
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Yun Ling
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Wenbo Liu
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Shen-xin Zeng
- School of Pharmacy, Hangzhou Medical College, Hangzhou, 311399, China
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17
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Gujjarappa R, Vodnala N, Musib D, Malakar CC. Organocatalytic Decarboxylation and Dual C(sp
3
)−H Bond Functionalization Toward Facile Access to Divergent 2,6‐Diarylpyridines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Raghuram Gujjarappa
- Department of Chemistry National Institute of Technology Manipur Langol Imphal 795004 Manipur India
| | - Nagaraju Vodnala
- Department of Chemistry National Institute of Technology Manipur Langol Imphal 795004 Manipur India
- Department of Chemistry Indian Institute of Technology Delhi Multi-storey building, HauzKhas New Delhi 110016 India
| | - Dulal Musib
- Department of Chemistry National Institute of Technology Manipur Langol Imphal 795004 Manipur India
| | - Chandi C. Malakar
- Department of Chemistry National Institute of Technology Manipur Langol Imphal 795004 Manipur India
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18
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Qin Z, Ma Y, Li F. Construction of a Pyrimidine Framework through [3 + 2 + 1] Annulation of Amidines, Ketones, and N, N-Dimethylaminoethanol as One Carbon Donor. J Org Chem 2021; 86:13734-13743. [PMID: 34541847 DOI: 10.1021/acs.joc.1c01847] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
An efficient, facile, and eco-friendly synthesis of pyrimidine derivatives has been developed. It involves a [3 + 2 + 1] three-component annulation of amidines, ketones, and one carbon source. N,N-Dimethylaminoethanol is oxidized through C(sp3)-H activation to provide the carbon donor. One C-C and two C-N bonds are formed during the oxidative annulation process. The reaction shows good tolerance to many important functional groups in air, making this methodology a highly versatile alternative, and significant improvement to the existing methods for structuring a pyrimidine framework, especially 4-aliphatic pyrimidines.
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Affiliation(s)
- Zemin Qin
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
| | - Fanzhu Li
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
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19
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Su MD, Liu HP, Cao ZZ, Liu Y, Li H, Nie ZW, Yang TL, Luo WP, Liu Q, Guo CC. Two C═C Bond Participation in Annulation to Pyridines Based on DMF as the Nonadjacent N and C Atom Donors. J Org Chem 2021; 86:13446-13453. [PMID: 34546730 DOI: 10.1021/acs.joc.1c01550] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Two C═C bond participation in annulation to pyridines using N,N-dimethylformamide (DMF) as the N1 and C4 synthons has been carried out. In this reaction, DMF contributed one N atom and one C atom to two disconnected positions of pyridine ring, with no need for an additional nitrogen source. Two C═C bonds in two molecules of substituted styrenes offered four carbon atoms in the presence of iodine and persulfate. With the optimized conditions in hand, both symmetric and unsymmetric diaryl-substituted pyridines were obtained in useful yields. On the basis of relevant literature and a series of control experimental results, a possible mechanism was proposed in this work, which may demonstrate how DMF provides both N1 and C4 sources.
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Affiliation(s)
- Miao-Dong Su
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Hai-Ping Liu
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Zhong-Zhong Cao
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Yufeng Liu
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Hui Li
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Zhi-Wen Nie
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Tong-Lin Yang
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Wei-Ping Luo
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Qiang Liu
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Can-Cheng Guo
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
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20
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Ramaraju A, Upare A, Blanch EW, Maniam S, Sridhar B, Bathula SR, Raji Reddy C. Chemoselective [3 + 2] annulation of oxime acetate with 2-aryl-3-ethoxycarbonyl-pyrroline-4,5-dione: an entry to pyrrolo[2,3- b]pyrrole derivatives. Org Biomol Chem 2021; 19:7875-7882. [PMID: 34549208 DOI: 10.1039/d1ob00990g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel chemoselective [3 + 2] annulation reaction of easily accessible ketoxime acetate with 2-aryl-3-ethoxycarbonyl pyrroline-4,5-dione has been developed for the synthesis of unknown pyrrolo[2,3-b]pyrrole frameworks. This method involves copper-mediated N-O bond cleavage followed by the formation of carbon-carbon and carbon-nitrogen bonds. This operationally simple protocol provides broader functional group compatibility and good yields.
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Affiliation(s)
- Andhavaram Ramaraju
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India. .,School of Science, STEM college, RMIT University, Melbourne, Victoria, 3001, Australia
| | - Atul Upare
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India.
| | - Ewan W Blanch
- School of Science, STEM college, RMIT University, Melbourne, Victoria, 3001, Australia
| | - Subashani Maniam
- School of Science, STEM college, RMIT University, Melbourne, Victoria, 3001, Australia
| | - Balasubramanian Sridhar
- Center for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Surendar Reddy Bathula
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India.
| | - Chada Raji Reddy
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India.
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21
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Zhang X, Miao X, Jiang H, Ge F, Sun J, Zhang R, Ouyang Q, Fan W, Zhu Y, Sun Y. Iodine‐Promoted Synthesis of Dipyrazolo/Diuracil‐Fused Pyridines and
o
‐Amino Diheteroaryl ketones via Oxidative Domino Annulation of 2/4‐Methylazaarenes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100839] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xin‐Ke Zhang
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Xiao‐Yu Miao
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Hui‐Ru Jiang
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Fei Ge
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Jia‐Chen Sun
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Rui‐Ying Zhang
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Qin Ouyang
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Wei‐Yu Fan
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Yan‐Ping Zhu
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Yuan‐Yuan Sun
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
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22
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Chen B, He H, Xu J, Guo K, Xu N, Chen K, Zhu Y. Transition‐Metal‐Free Visible Light‐Induced Imino‐trifluoromethylation of Unsaturated Oxime Esters: A Facile Access to CF
3
‐Tethered Pyrrolines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bin Chen
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 P. R. China
| | - Han He
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 P. R. China
| | - Jiawei Xu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 P. R. China
| | - Kang Guo
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 P. R. China
| | - Ning Xu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 P. R. China
| | - Kang Chen
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 P. R. China
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 P. R. China
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23
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Qin Z, Zhang R, Ma Y, Li F. Co(II)‐Catalyzed Oxidation of
N,N
‐Dimethylaminoethanol: An Efficient Synthesis of Unsymmetrical (2,4‐) and Symmetrical (2,6‐) Diarylpyridines through Annulation of Aromatic Ketones with a Nitrogen Source. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zemin Qin
- School of Pharmaceutical Sciences Zhejiang Chinese Medical University Hangzhou 310053 P. R China
- School of Pharmaceutical and Chemical Engineering Taizhou University Taizhou 318000 P. R. China
| | - Ruiqin Zhang
- School of Pharmaceutical Sciences Zhejiang Chinese Medical University Hangzhou 310053 P. R China
| | - Yongmin Ma
- School of Pharmaceutical Sciences Zhejiang Chinese Medical University Hangzhou 310053 P. R China
- School of Pharmaceutical and Chemical Engineering Taizhou University Taizhou 318000 P. R. China
| | - Fanzhu Li
- School of Pharmaceutical Sciences Zhejiang Chinese Medical University Hangzhou 310053 P. R China
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24
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Zhang Y, Kuang J, Xiao X, Wang L, Ma Y. DMSO as a Dual Carbon Synthon and Water as Oxygen Donor for the Construction of 1,3,5-Oxadiazines from Amidines. Org Lett 2021; 23:3960-3964. [PMID: 33938756 DOI: 10.1021/acs.orglett.1c01116] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A selective and efficient synthesis of diaryl 1,3,5-oxadiazines was established for the first time from simple and readily available amidines in wet DMSO. DMSO was employed as a dual carbon synthon and water offered the oxygen atom to construct the oxadiazine ring. The reaction involved two new C-N and two new C-O bond formations.
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Affiliation(s)
- Yi Zhang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P.R. China.,College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, P.R. China
| | - Jinqiang Kuang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P.R. China
| | - Xuqiong Xiao
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, no. 2318 Yuhangtang Road, Hangzhou311121, P.R. China
| | - Lei Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P.R. China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P.R. China.,College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, P.R. China
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25
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Biswal P, Samser S, Nayak P, Chandrasekhar V, Venkatasubbaiah K. Cobalt(II)porphyrin-Mediated Selective Synthesis of 1,5-Diketones via an Interrupted-Borrowing Hydrogen Strategy Using Methanol as a C1 Source. J Org Chem 2021; 86:6744-6754. [PMID: 33902283 DOI: 10.1021/acs.joc.1c00476] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A novel cobalt(II)porphyrin-mediated acceptorless dehydrogenation of methanol is reported for the first time. This methodology has been applied for the coupling of a variety of ketones with methanol to produce 1,5-diketones along with H2 and H2O as the environment friendly byproducts. This paradigm was also demonstrated for a one-pot synthesis of substituted pyridines using a sequential addition protocol where the 1,5-diketones were generated in situ. From many experiments including those involving deuterium labeling, it is proposed that protonated cobalt(II)porphyrin methoxide complex acts as an intermediate to generate formaldehyde along with a metal hydride.
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Affiliation(s)
- Priyabrata Biswal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, HBNI, Bhubaneswar-752050, Odisha, India
| | - Shaikh Samser
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, HBNI, Bhubaneswar-752050, Odisha, India
| | - Prakash Nayak
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, HBNI, Bhubaneswar-752050, Odisha, India
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.,Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, Uttar Pradesh, India
| | - Krishnan Venkatasubbaiah
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, HBNI, Bhubaneswar-752050, Odisha, India
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26
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Weng Y, Chen H, Li N, Yang L, Ackermann L. Electrooxidative Metal‐Free Cyclization of 4‐Arylaminocoumarins with DMF as C1‐Source. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100146] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yiyi Weng
- College of Pharmaceutical Sciences Zhejiang University of Technology 310014 Hangzhou People's Republic of China
- Institut fuer Organische und Biomolekulare Chemie Georg-August-Universitaet Gottingen Tammannstrasse 2 37077 Goettingen Germany
| | - Hantao Chen
- College of Pharmaceutical Sciences Zhejiang University of Technology 310014 Hangzhou People's Republic of China
| | - Nanhui Li
- College of Pharmaceutical Sciences Zhejiang University of Technology 310014 Hangzhou People's Republic of China
| | - Long Yang
- Institut fuer Organische und Biomolekulare Chemie Georg-August-Universitaet Gottingen Tammannstrasse 2 37077 Goettingen Germany
| | - Lutz Ackermann
- Institut fuer Organische und Biomolekulare Chemie Georg-August-Universitaet Gottingen Tammannstrasse 2 37077 Goettingen Germany
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27
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Xie T, Sui QB, Qin LZ, Wen X, Sun H, Xu QL, Zhen L. Cu-Catalyzed Dimerization of Indole Derived Oxime Acetate for Synthesis of Biimidazo[1,2- a]indoles. J Org Chem 2021; 86:5518-5529. [PMID: 33779172 DOI: 10.1021/acs.joc.1c00010] [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 copper-mediated cyclization and dimerization of indole derived oxime acetate was developed to generate a series of biimidazo[1,2-a]indole scaffolds with two contiguous stereogenic quaternary carbons in one step.
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Affiliation(s)
- Tao Xie
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, Center of Drug Discovery, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Qi-Bang Sui
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, Center of Drug Discovery, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Lu-Zhe Qin
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, Center of Drug Discovery, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Xiaoan Wen
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, Center of Drug Discovery, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Hongbin Sun
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, Center of Drug Discovery, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Qing-Long Xu
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, Center of Drug Discovery, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Le Zhen
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
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28
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Ding Y, Ma R, Xiao XQ, Wang L, Wang Z, Ma Y. Sustainable Four-Component Annulation for the Synthesis of 2,3,4,6-Tetraarylpyridines. J Org Chem 2021; 86:3897-3906. [PMID: 33595303 DOI: 10.1021/acs.joc.0c02764] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A one-pot, four-component annulation of 2,3,4,6-tetraarylpyridines from aromatic aldehydes, methyl ketones, diaryl ethanones, and ammonium acetate is described. The reaction features high functional group compatibility in air under solvent-free conditions without any additive and only water as the nontoxic byproduct, providing a strategy for the facile, economical, and eco-friendly construction of multiaryl-substituted pyridines from simple and readily available reactants.
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Affiliation(s)
- Yuxin Ding
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
| | - Renchao Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Xu-Qiong Xiao
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, No. 2318 Yuhangtang Road, Hangzhou 311121, P R China
| | - Lei Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Zhiming Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
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29
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Xu Z, Chen H, Deng GJ, Huang H. Copper-Catalyzed Formal [3 + 3] Annulations of Arylketoximes and o-Fluorobenzaldehydes: An Entry to Quinoline Compounds. Org Lett 2021; 23:936-942. [DOI: 10.1021/acs.orglett.0c04138] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Zhenhua Xu
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Hongbiao Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
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30
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Liu Y, Luo W, Wang Z, Zhao Y, Zhao J, Xu X, Wang C, Li P. Visible-Light Photoredox-Catalyzed Formal [5 + 1] Cycloaddition of N-Tosyl Vinylaziridines with Difluoroalkyl Halides. Org Lett 2020; 22:9658-9664. [PMID: 33236913 DOI: 10.1021/acs.orglett.0c03718] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A visible-light photoredox-catalyzed formal [5 + 1] cycloaddition of N-tosyl vinylaziridines with difluoroalkyl halides as unique C1 synthons was developed. The procedure provides an efficient and practical method to synthesize diverse pyridines in moderate to good yields. The reaction underwent a radical-initiated kinetically controlled ring-opening of vinylaziridines and involved a key α,β-unsaturated imine intermediate, followed by an E2 elimination, a 6π electrocyclization, and defluorinated aromatization.
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Affiliation(s)
- Yantao Liu
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, People's Republic of China
| | - Wen Luo
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, People's Republic of China
| | - Zhenjie Wang
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, People's Republic of China
| | - Yuxin Zhao
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, People's Republic of China
| | - Jingjing Zhao
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, People's Republic of China
| | - Xuejun Xu
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, People's Republic of China
| | - Chaojie Wang
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, People's Republic of China
| | - Pan Li
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, People's Republic of China.,Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, People's Republic of China
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31
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CuBr2-catalyzed ring opening/formylation reaction of cyclopropyl carbinols with DMF to synthesize formate esters. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152506] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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32
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Du F, Li S, Jiang K, Zeng R, Pan X, Lan Y, Chen Y, Wei Y. Iron‐Catalyzed Radical Relay Enabling the Modular Synthesis of Fused Pyridines from Alkyne‐Tethered Oximes and Alkenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010752] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fei Du
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Shi‐Jun Li
- College of Chemistry and Institute of Green Catalysis Zhengzhou University Zhengzhou Henan 450001 China
| | - Kun Jiang
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Rong Zeng
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Xi‐Chun Pan
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Yu Lan
- College of Chemistry and Institute of Green Catalysis Zhengzhou University Zhengzhou Henan 450001 China
- School of Chemistry and Chemical Engineering and Chongqing Key Laboratory of Theoretical and Computational Chemistry Chongqing University Chongqing 400030 China
| | - Ying‐Chun Chen
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Ye Wei
- College of Pharmacy Army Medical University Chongqing 400038 China
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33
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Du F, Li S, Jiang K, Zeng R, Pan X, Lan Y, Chen Y, Wei Y. Iron‐Catalyzed Radical Relay Enabling the Modular Synthesis of Fused Pyridines from Alkyne‐Tethered Oximes and Alkenes. Angew Chem Int Ed Engl 2020; 59:23755-23762. [DOI: 10.1002/anie.202010752] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Indexed: 12/26/2022]
Affiliation(s)
- Fei Du
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Shi‐Jun Li
- College of Chemistry and Institute of Green Catalysis Zhengzhou University Zhengzhou Henan 450001 China
| | - Kun Jiang
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Rong Zeng
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Xi‐Chun Pan
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Yu Lan
- College of Chemistry and Institute of Green Catalysis Zhengzhou University Zhengzhou Henan 450001 China
- School of Chemistry and Chemical Engineering and Chongqing Key Laboratory of Theoretical and Computational Chemistry Chongqing University Chongqing 400030 China
| | - Ying‐Chun Chen
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Ye Wei
- College of Pharmacy Army Medical University Chongqing 400038 China
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34
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Yan M, Ma R, Chen R, Wang L, Wang Z, Ma Y. Synthesis of 1,2-dihydro-1,3,5-triazine derivatives via Cu(II)-catalyzed C(sp 3)-H activation of N, N-dimethylethanolamine with amidines. Chem Commun (Camb) 2020; 56:10946-10949. [PMID: 32940285 DOI: 10.1039/d0cc03820b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
1,2-Dihydro-1,3,5-triazines and symmetrical 1,3,5-triazines were obtained in up to 81% yields from amidines and N,N-dimethylethanolamine catalyzed by CuCl2. The reaction involves three C-N bond formations during the oxidative annulation process and the mechanism was proposed. This efficient synthesis of 1,2-dihydro-1,3,5-triazines was developed for the first time.
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Affiliation(s)
- Min Yan
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Avenue, Taizhou, 318000, P. R. China. and School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, 310053, P. R. China
| | - Renchao Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Avenue, Taizhou, 318000, P. R. China.
| | - Rener Chen
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Avenue, Taizhou, 318000, P. R. China.
| | - Lei Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Avenue, Taizhou, 318000, P. R. China.
| | - Zhiming Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Avenue, Taizhou, 318000, P. R. China.
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Avenue, Taizhou, 318000, P. R. China. and School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, 310053, P. R. China
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35
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Vodnala N, Gujjarappa R, Satheesh V, Gupta R, Kaldhi D, Kabi AK, Malakar CC. Copper‐Catalyzed [2+2+1+1] Annulation for the Regioselective Synthesis of 2,6‐Diarylpyridines
via
C1‐Insertion and Subsequent Cyclization. ChemistrySelect 2020. [DOI: 10.1002/slct.202002968] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nagaraju Vodnala
- Department of Chemistry National Institute of Technology Manipur Langol Imphal 795004 Manipur India
| | - Raghuram Gujjarappa
- Department of Chemistry National Institute of Technology Manipur Langol Imphal 795004 Manipur India
| | - Vanaparthi Satheesh
- Schulich Faculty of Chemistry Technion-Israel Institute of Technology Haifa 3200003 Israel
| | - Richa Gupta
- Department of Chemistry National University of Singapore Singapore 117543 Singapore
| | - Dhananjaya Kaldhi
- Department of Chemistry National Institute of Technology Manipur Langol Imphal 795004 Manipur India
| | - Arup K. Kabi
- Department of Chemistry National Institute of Technology Manipur Langol Imphal 795004 Manipur India
| | - Chandi C. Malakar
- Department of Chemistry National Institute of Technology Manipur Langol Imphal 795004 Manipur India
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36
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Ganesan B, Govindan K, Senadi GC, Kandasamy M, Lin WY. Copper-catalyzed synthesis of aminoquinolines from β-(2-aminophenyl)-α,β-ynones using DMF as dual synthon. Chem Commun (Camb) 2020; 56:6488-6491. [PMID: 32458882 DOI: 10.1039/d0cc03033c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new and efficient method has been developed for the synthesis of 4-aminoquinoline through aerobic Cu(i)-catalyzed cyclization of β-(2-aminophenyl)-α,β-ynones. Under the optimized conditions, DMF could serve as a methine source to introduce C2 carbon and a nitrogen source to incorporate amino functionality in the 4th position. Mechanistic studies using 13C- and DMF-d7 revealed that the methine group was derived from a methyl substituent.
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Affiliation(s)
- Balaji Ganesan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China.
| | - Karthick Govindan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China.
| | - Gopal Chandru Senadi
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai-603203, India
| | - Mohanraj Kandasamy
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China.
| | - Wei-Yu Lin
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China. and Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan, Republic of China and Drug Development and Value Creation Research Centre, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
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37
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Duan J, Zhang L, Xu G, Chen H, Ding X, Mao Y, Rong B, Zhu N, Guo K. NH4I-Triggered [4 + 2] Annulation of α,β-Unsaturated Ketoxime Acetates with N-Acetyl Enamides for the Synthesis of Pyridines. J Org Chem 2020; 85:8157-8165. [DOI: 10.1021/acs.joc.0c01081] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Jindian Duan
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Lei Zhang
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Gaochen Xu
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Heming Chen
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xiaojuan Ding
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yiyang Mao
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Binsen Rong
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ning Zhu
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
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38
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Chang MY, Tsai YL. One-Pot Amberlyst 15-Controlled Cyclocondensation of Piperidines and Arylaldehydes: Synthesis of 3,5-Diarylmethylpyridines. J Org Chem 2020; 85:5651-5659. [PMID: 32208623 DOI: 10.1021/acs.joc.9b03315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Amberlyst 15-controlled one-pot easy-operational intermolecular cyclocondensation of substituted piperidines with arylaldehydes provides diversified 3,5-diarylmethylpyridines in high to excellent yields under refluxing toluene conditions. The uses of various acidic solid supports and reaction solvents are investigated for facile and efficient transformation. A plausible mechanism has been proposed.
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Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Yu-Lin Tsai
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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39
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Miao CB, Zheng AQ, Zhou LJ, Lyu X, Yang HT. Copper-Catalyzed Annulation of Oxime Acetates with α-Amino Acid Ester Derivatives: Synthesis of 3-Sulfonamido/Imino 4-Pyrrolin-2-ones. Org Lett 2020; 22:3381-3385. [DOI: 10.1021/acs.orglett.0c00870] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Chun-Bao Miao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - An-Qi Zheng
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Li-Jin Zhou
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Xinyu Lyu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Hai-Tao Yang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
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40
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Li ZH, Sun XM, Qin JJ, Tan ZY, Wang WB, Ma Y. Divergent strategy for the chemoselective synthesis of N-Arylbenzimidazoles and N-Arylindazoles from arylamino oximes. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.130945] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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41
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Gujjarappa R, Vodnala N, Malakar CC. Decarboxylative cyclization of amino acids towards the Regioselective synthesis of 2,4-diarylpyridines via relay Fe(III)/In(III)-catalysis. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151495] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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42
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Wang X, Liu H, Xie C, Zhou F, Ma C. Terminal methyl as a one-carbon synthon: synthesis of quinoxaline derivatives via radical-type transformation. NEW J CHEM 2020. [DOI: 10.1039/c9nj04910j] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
An iron-promoted method for the construction of pyrrolo[1,2-a]quinoxaline derivatives has been developed. Various solvents with terminal methyl group, including ethers, amines and dimethyl sulfoxide, were utilized as carbon sources for the synthesis.
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Affiliation(s)
- Xinfeng Wang
- Key Laboratory of Special Functional Aggregated Materials
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
| | - Huanhuan Liu
- Key Laboratory of Special Functional Aggregated Materials
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
| | - Caixia Xie
- Key Laboratory of Special Functional Aggregated Materials
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
| | - Feiyu Zhou
- Key Laboratory of Special Functional Aggregated Materials
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
| | - Chen Ma
- Key Laboratory of Special Functional Aggregated Materials
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
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43
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Zhou P, Huang Y, Wu W, Zhou J, Yu W, Jiang H. Access to 2-Aroylthienothiazoles via C–H/N–O Bond Functionalization of Oximes. Org Lett 2019; 21:9976-9980. [DOI: 10.1021/acs.orglett.9b03900] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Peiqi Zhou
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Yubing Huang
- Key Lab 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 Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Jiaming Zhou
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Wentao Yu
- Key Lab 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 Lab 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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44
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Xu Z, Deng GJ, Zhang F, Chen H, Huang H. Three-Component Cascade Bis-heteroannulation of Aryl or Vinyl Methylketoxime Acetates toward Thieno[3,2-c]isoquinolines. Org Lett 2019; 21:8630-8634. [DOI: 10.1021/acs.orglett.9b03241] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhenhua Xu
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Feng Zhang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
- College of Science, Hunan Agricultural University, Changsha 410128, China
| | - Hongbiao Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
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45
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Xiao F, Yuan S, Huang H, Zhang F, Deng GJ. Copper-Catalyzed Three-Component Domino Cyclization for the Synthesis of 4-Aryl-5-(arythio)-2-(trifluoromethyl)oxazoles. Org Lett 2019; 21:8533-8536. [PMID: 31603338 DOI: 10.1021/acs.orglett.9b02934] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A copper-catalyzed oxidative cyclization of oxime, arylthiol, and trifluoroacetic anhydride for the construction of trisubstituted oxazoles has been developed. This transformation combines N-O bond cleavage, C-H functionalization, and intramolecular annulation, providing a practical protocol for the introduction of a trifluoromethyl (-CF3) group at oxazole rings.
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Affiliation(s)
- Fuhong Xiao
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry , Key Laboratory for Green Organic Synthesis and Application of Hunan Province Xiangtan University , Xiangtan 411105 , China
| | - Shanshan Yuan
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry , Key Laboratory for Green Organic Synthesis and Application of Hunan Province Xiangtan University , Xiangtan 411105 , China
| | - Huawen Huang
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry , Key Laboratory for Green Organic Synthesis and Application of Hunan Province Xiangtan University , Xiangtan 411105 , China
| | - Feng Zhang
- College of Science , Hunan Agricultural University , Changsha 410128 , China
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry , Key Laboratory for Green Organic Synthesis and Application of Hunan Province Xiangtan University , Xiangtan 411105 , China
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46
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Qu Z, Zhang F, Deng GJ, Huang H. Regioselectivity Control in the Oxidative Formal [3 + 2] Annulations of Ketoxime Acetates and Tetrohydroisoquinolines. Org Lett 2019; 21:8239-8243. [DOI: 10.1021/acs.orglett.9b02978] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Zhonghua Qu
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Feng Zhang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
- College of Science, Hunan Agricultural University, Changsha 410128, China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
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47
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Cheng D, Deng Z, Yan X, Wang M, Xu X, Yan J. 2,3‐Dichloro‐5,6‐Dicyano‐1,4‐Benzoquinone (DDQ)‐Mediated Tandem Oxidative Coupling/Intramolecular Annulation/Dehydro‐Aromatization for the Synthesis of Polysubstituted and Fused Pyridines. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900956] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Dongping Cheng
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310014, People's Republic of China
| | - Zhiteng Deng
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310014, People's Republic of China
| | - Xianhang Yan
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310014, People's Republic of China
| | - Mingliang Wang
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310014, People's Republic of China
| | - Xiaoliang Xu
- College of Chemical EngineeringZhejiang University of Technology Hangzhou 310014, People's Republic of China
| | - Jizhong Yan
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310014, People's Republic of China
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48
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Wang S, Wang K, Kong X, Zhang S, Jiang G, Ji F. DMF as Methine Source: Copper‐Catalyzed Direct Annulation of Hydrazides to 1,3,4‐Oxadiazoles. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900395] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Shoucai Wang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering Guilin University of Technology Guilin 541004 People's Republic of China
| | - Kai Wang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering Guilin University of Technology Guilin 541004 People's Republic of China
| | - Xiangfei Kong
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering Guilin University of Technology Guilin 541004 People's Republic of China
| | - Shuhua Zhang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering Guilin University of Technology Guilin 541004 People's Republic of China
| | - Guangbin Jiang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering Guilin University of Technology Guilin 541004 People's Republic of China
| | - Fanghua Ji
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering Guilin University of Technology Guilin 541004 People's Republic of China
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49
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Ning Y, He X, Zuo Y, Cai P, Xie M, Wang J, Shang Y. Rhodium(II) Acetate‐Catalysed Cyclization of Pyrazol‐5‐amine and 1,3‐Diketone‐2‐diazo Compounds Using
N
,
N
‐Dimethylformamide as a Carbon‐Hydrogen Source: Access to Pyrazolo[3,4‐
b
]pyridines. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900093] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yi Ning
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials ScienceAnhui Normal University Wuhu People's Republic of China
| | - Xinwei He
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials ScienceAnhui Normal University Wuhu People's Republic of China
| | - Youpeng Zuo
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials ScienceAnhui Normal University Wuhu People's Republic of China
| | - Panyuan Cai
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials ScienceAnhui Normal University Wuhu People's Republic of China
| | - Mengqing Xie
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials ScienceAnhui Normal University Wuhu People's Republic of China
| | - Jian Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials ScienceAnhui Normal University Wuhu People's Republic of China
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials ScienceAnhui Normal University Wuhu People's Republic of China
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50
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Yang Y, Li Y, Zhang Z, Zhao Y, Feng W. Metal-free N-formylation of 2-aminophenols using dimethylformamide and CSA. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1584319] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Yuanyong Yang
- School of Pharmacy, Guizhou Medical University, Guiyang, China
| | - Yingxian Li
- School of Pharmacy, Guizhou Medical University, Guiyang, China
| | | | - Yonglong Zhao
- School of Pharmacy, Guizhou Medical University, Guiyang, China
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