1
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Sonam, Shinde VN, Kumar A. KPF6-Mediated Esterification and Amidation of Carboxylic Acids. J Org Chem 2022; 87:2651-2661. [DOI: 10.1021/acs.joc.1c02611] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sonam
- Department of Chemistry, Birla Institute of Technology & Science, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Vikki N. Shinde
- Department of Chemistry, Birla Institute of Technology & Science, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology & Science, Pilani Campus, Pilani, Rajasthan 333031, India
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2
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Jia Q, Yin G, Lan Y, Lin Y, Ren Q. Base‐mediated Benzannulation Reactions for the Synthesis of Densely Functionalized Aryl α‐Keto Esters. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Qianfa Jia
- College of Chemistry Chemical Engineering and Materials Science Yibin University Yinbin 644000 P. R. China
| | - Guoliang Yin
- College of Chemistry Chemical Engineering and Materials Science Yibin University Yinbin 644000 P. R. China
| | - Yunfei Lan
- College of Pharmaceutical Science Southwest University Chongqing 400715 P. R. China
| | - Yinhe Lin
- College of Chemistry Chemical Engineering and Materials Science Yibin University Yinbin 644000 P. R. China
| | - Qiao Ren
- College of Pharmaceutical Science Southwest University Chongqing 400715 P. R. China
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3
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Zhao R, Teng J, Wang Z, Dong W, Lin J, Chu C. Copper on charcoal: Cu 0 nanoparticle catalysed aerobic oxidation of α-diazo esters. Org Biomol Chem 2021; 19:6120-6126. [PMID: 34179916 DOI: 10.1039/d1ob00811k] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By using a charcoal supported nano Cu0 catalyst (Cu/C), a highly efficient oxidation of α-diazo esters to α-ketoesters with molecular oxygen as the sole oxidant has been developed. In the presence of the Cu/C catalyst, 2-aryl-α-diazo esters with both electron-donating and electron-withdrawing groups can be oxidized to the corresponding α-ketoesters efficiently. Furthermore, this Cu/C catalyst can catalyse the reaction of aryl α-diazo ester with water to form aryl ketoester, 2-aryl-2-hydroxyl acetate ester and 2-aryl acetate ester. In this case, water is split by α-diazo ester, and the diazo group is displaced by the oxygen or hydrogen atom in water. Mechanistic investigation showed that the reaction of α-diazo ester with oxygen proceeds through a radical pathway. In the presence of 2,2,6,6-tetramethyl piperidine nitrogen oxide, the reaction of α-diazo ester with oxygen is dramatically inhibited. Furthermore, the reaction of α-diazo ester with water is investigated by an isotopic tracer method, and GCMS detection showed that a disproportionation reaction occurred between α-diazo ester and water.
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Affiliation(s)
- Rong Zhao
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design; School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Jiangge Teng
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design; School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Zhiwei Wang
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design; School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Wenwen Dong
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design; School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Jia Lin
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design; School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Changhu Chu
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design; School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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4
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Zheng W, Tan M, Yang L, Zhou L, Zeng Q. I2
-Catalyzed N-Sulfonylation of Sulfoximines with Sulfinates in Water at Room Temperature. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000120] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Wenting Zheng
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection; College of Materials, Chemistry & Chemical Engineering; Chengdu University of Technology; 610059 Chengdu China
| | - Mingchao Tan
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection; College of Materials, Chemistry & Chemical Engineering; Chengdu University of Technology; 610059 Chengdu China
| | - Lu Yang
- Department of Chemistry; Graduate School of Science; Tohoku University; 980-8578 Sendai Japan
| | - Lihong Zhou
- College of Environment and Ecology; College of Materials, Chemistry & Chemical Engineering; Chengdu University of Technology; 610059 Chengdu China
| | - Qingle Zeng
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection; College of Materials, Chemistry & Chemical Engineering; Chengdu University of Technology; 610059 Chengdu China
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5
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Cai XH, Zhang H, Guo H. Denitrative Coupling Reaction: A Powerful Synthetic Tool in Functional Transformation. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666190627114857] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Nitro hydrocarbons as inexpensive, easily available, and relatively stable organic intermediates have aroused great attention in various functional group transformations over the past several decades. The electron-withdrawing action of the nitro group can act as a transient leaving group to efficiently transform into the other important functionalities. Nitro compounds are easily prepared through simple synthetic reactions from simple and facile starting substrates and provide an exciting opportunity for the synthesis of various valuable products. This account will review recent progress in the denitrative coupling reaction of nitroalkanes, nitroolefins, and nitroarenes under transition metalcatalyzed, transition metal-free, or visible light induced conditions.
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Affiliation(s)
- Xiao-hua Cai
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
| | - Hongyan Zhang
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
| | - Hui Guo
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China
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6
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Wang Y, Zou J, Wang H, Peng X, Lu Y, Feng Y, Chen C, Shi T, Wang Z. A Facile Approach to α‐Keto Esters via Oxidative Esterification of α‐Amino Carbonyl Compounds. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yong‐qiang Wang
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Jiao‐xia Zou
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Hui‐hong Wang
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 China
| | - Xue Peng
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Ying‐mei Lu
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Yi‐yue Feng
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Chen Chen
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Tao Shi
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Zhen Wang
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 China
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7
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Bhargude PL, Lade JJ, Patil BN, Vadagaonkar KS, Chaskar AC. Highly adequate oxidative esterification of α-carbonyl aldehydes with alkyl halides in TBAI/TBHP mediated system. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1600193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Pooja L. Bhargude
- National Centre for Nanosciences and Nanotechnology, University of Mumbai, Mumbai, India
| | - Jatin J. Lade
- National Centre for Nanosciences and Nanotechnology, University of Mumbai, Mumbai, India
| | - Bhausaheb N. Patil
- National Centre for Nanosciences and Nanotechnology, University of Mumbai, Mumbai, India
| | | | - Atul C. Chaskar
- National Centre for Nanosciences and Nanotechnology, University of Mumbai, Mumbai, India
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8
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Xu L, Chen Y, Shen Z, Wang Y, Li M. I2/Fe(NO3)3·9H2O-catalyzed oxidative synthesis of aryl carboxylic acids from aryl alkyl ketones and secondary benzylic alcohols. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.10.060] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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9
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Chalotra N, Ahmed A, Rizvi MA, Hussain Z, Ahmed QN, Shah BA. Photoredox Generated Vinyl Radicals: Synthesis of Bisindoles and β-Carbolines. J Org Chem 2018; 83:14443-14456. [DOI: 10.1021/acs.joc.8b02193] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Neha Chalotra
- AcSIR and Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India
| | - Ajaz Ahmed
- AcSIR and Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India
| | | | - Zakir Hussain
- Department of Chemistry, University of Kashmir, Srinagar 190006, India
| | - Qazi Naveed Ahmed
- AcSIR and Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India
| | - Bhahwal Ali Shah
- AcSIR and Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India
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10
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Das DK, Kumar Pampana VK, Hwang KC. Copper catalyzed photoredox synthesis of α-keto esters, quinoxaline, and naphthoquinone: controlled oxidation of terminal alkynes to glyoxals. Chem Sci 2018; 9:7318-7326. [PMID: 30294421 PMCID: PMC6167948 DOI: 10.1039/c8sc03447h] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 08/28/2018] [Indexed: 12/17/2022] Open
Abstract
Controlled oxidation of the terminal C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C triple bond using O2 (1 atm) as an oxidant and reagent.
Herein, we report a facile visible light induced copper catalyzed controlled oxidation of terminal C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C alkynes to α-keto esters and quinoxalines via formation of phenylglyoxals as stable intermediates, under mild conditions by using molecular O2 as a sustainable oxidant. The current copper catalysed photoredox method is simple, highly functional group compatible with a broad range of electron rich and electron poor aromatic alkynes as well as aliphatic alcohols (1°, 2° and 3° alcohols), providing an efficient route for the preparation of α-keto esters (43 examples), quinoxaline and naphthoquinone with higher yields than those in the literature reported thermal processes. Furthermore, the synthetic utility of the products has been demonstrated in the synthesis of two biologically active molecules, an E. coli DHPS inhibitor and CFTR activator, using the current photoredox process. In addition, we applied this methodology to the one-pot synthesis of a heterocyclic compound (quinoxaline, an FLT3 inhibitor) by trapping the intermediate phenylglyoxal with O-phenylenediamine. The intermediate phenylglyoxal can also be isolated and further reacted with an internal alkyne to form naphthoquinone. This process can be readily scaled up to the gram scale.
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Affiliation(s)
- Deb Kumar Das
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan , Republic of China .
| | - V Kishore Kumar Pampana
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan , Republic of China .
| | - Kuo Chu Hwang
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan , Republic of China .
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11
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Sundaravelu N, Chakraborty A, Sekar G. Domino Oxidative Esterification of 2-Oxo Alcohol Using 2-Iodoxybenzoic Acid/I 2
: A Route to Synthesize α
-Ketoester. ChemistrySelect 2018. [DOI: 10.1002/slct.201800941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nallappan Sundaravelu
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036, Tamil Nadu India
| | - Ankush Chakraborty
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036, Tamil Nadu India
| | - Govindasamy Sekar
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036, Tamil Nadu India
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12
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Hu W, Li M, Jiang G, Wu W, Jiang H. Synthesis of 2,3-Difunctionalized Benzofuran Derivatives through Palladium-Catalyzed Double Isocyanide Insertion Reaction. Org Lett 2018; 20:3500-3503. [PMID: 29870267 DOI: 10.1021/acs.orglett.8b01277] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A novel palladium-catalyzed tandem cyclization of 1-(allyloxy)-2-ethynylbenzene derivatives with isocyanides in the presence of water has been developed. The key intermediates, benzofuran-3-α-carbonyl aldehydes, were obtained through a simple acid hydrolysis process and could serve as precursors for structurally diverse 2,3-difunctionalized benzofuran derivatives such as important 2-benzofurylquinoxalines, benzofuran-3-α-ketoesters and benzofuryl ynediones. This transformation features convenient operation, simple and commercially available starting materials, broad functional-group compatibility, and moderate to good reaction yields.
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Affiliation(s)
- Weigao Hu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Meng Li
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Guangbin Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
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13
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Abstract
A new and simple procedure mediated by I2 is developed for the preparation of 4-selanylpyrazoles from pyrazoles and diselenides.
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Affiliation(s)
- Junxing Wang
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Yuhong Liu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Jie Yan
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
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14
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Kumar Y, Jaiswal Y, Shaw M, Kumar A. Metal-Free Catalyst-Controlled Chemoselective Synthesis of Aryl α
-Ketoesters and Primary α
-Ketoamides from Aryl Acetimidates. ChemistrySelect 2017. [DOI: 10.1002/slct.201701322] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yogesh Kumar
- Department of Chemistry; Indian Institute of Technology Patna, Bihta; 801103 Bihar India
| | - Yogesh Jaiswal
- Department of Chemistry; Indian Institute of Technology Patna, Bihta; 801103 Bihar India
| | - Mukta Shaw
- Department of Chemistry; Indian Institute of Technology Patna, Bihta; 801103 Bihar India
| | - Amit Kumar
- Department of Chemistry; Indian Institute of Technology Patna, Bihta; 801103 Bihar India
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15
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Murugan A, Vidyacharan S, Ghosh R, Sharada DS. Metal-Free Regioselective Dual C-H Functionalization in a Cascade Fashion: Access to Isocryptolepine Alkaloid Analogues. ChemistrySelect 2017. [DOI: 10.1002/slct.201700263] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Arumugavel Murugan
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi Sangareddy-502 285, Telangana INDIA
| | - Shinde Vidyacharan
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi Sangareddy-502 285, Telangana INDIA
| | - Ruma Ghosh
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi Sangareddy-502 285, Telangana INDIA
| | - Duddu S. Sharada
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi Sangareddy-502 285, Telangana INDIA
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16
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Vidyacharan S, Adhikari C, Krishna VS, Reshma RS, Sriram D, Sharada DS. A robust synthesis of functionalized 2 H -indazoles via solid state melt reaction (SSMR) and their anti-tubercular activity. Bioorg Med Chem Lett 2017; 27:1593-1597. [DOI: 10.1016/j.bmcl.2017.02.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 02/03/2017] [Accepted: 02/09/2017] [Indexed: 01/16/2023]
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17
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Installation of α-ketocarboxylate groups to C7-position of indolines via C−H addition and oxidation approach under ruthenium catalysis. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.02.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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18
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Vadagaonkar KS, Kalmode HP, Shinde SL, Chaskar AC. An Efficient and Metal-free Synthesis of α-KetoestersviaOxidative Cross Coupling of Arylglyoxals with Alcohols. ChemistrySelect 2017. [DOI: 10.1002/slct.201601825] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Kamlesh S. Vadagaonkar
- Department of Dyestuff Technology; Institute of Chemical Technology; Mumbai- 400019 India
| | - Hanuman P. Kalmode
- Department of Dyestuff Technology; Institute of Chemical Technology; Mumbai- 400019 India
| | - Suresh L. Shinde
- National Centre for Nanosciences and Nanotechnology; University of Mumbai; Mumbai- 400098 India
| | - Atul C. Chaskar
- Department of Dyestuff Technology; Institute of Chemical Technology; Mumbai- 400019 India
- National Centre for Nanosciences and Nanotechnology; University of Mumbai; Mumbai- 400098 India
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19
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Wang X, Li H, Zhu M, Yan J. Convenient iodine-mediated aminoselenation of alkenes using benzotriazoles as nitrogen sources. RSC Adv 2017. [DOI: 10.1039/c6ra27202a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Convenient iodine-mediated alkene aminoselenation using benzotriazoles as nitrogen sources.
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Affiliation(s)
- Xiaolong Wang
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Hongjie Li
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Min Zhu
- College of Biological and Environmental Sciences
- Zhejiang Shuren University
- Hangzhou 310015
- P. R. China
| | - Jie Yan
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
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20
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Guo S, Dai Z, Hua J, Yang Z, Fang Z, Guo K. Microfluidic synthesis of α-ketoesters via oxidative coupling of acetophenones with alcohols under metal-free conditions. REACT CHEM ENG 2017. [DOI: 10.1039/c7re00107j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An efficient and novel method for the synthesis of α-ketoesters has been developed via oxidative coupling of acetophenones with alcohols under TBHP/I2/DBU conditions in a microfluidic chip reactor, which has a wide substrate scope, uses a lower dosage of iodine and affords higher product yields in only a few seconds.
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Affiliation(s)
- Shiyu Guo
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Zhongxue Dai
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Jiawei Hua
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Zhao Yang
- College of Engineering
- China Pharmaceutical University
- Nanjing
- China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
- State Key Laboratory of Materials-Oriented Chemical Engineering
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21
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Kumar Y, Jaiswal Y, Kumar A. Copper(II)-Catalyzed Benzylic C(sp3)–H Aerobic Oxidation of (Hetero)Aryl Acetimidates: Synthesis of Aryl-α-ketoesters. J Org Chem 2016; 81:12247-12257. [DOI: 10.1021/acs.joc.6b02176] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yogesh Kumar
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801103, Bihar, India
| | - Yogesh Jaiswal
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801103, Bihar, India
| | - Amit Kumar
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801103, Bihar, India
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22
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Vidyacharan S, Murugan A, Sharada DS. C(sp(2))-H Functionalization of 2H-Indazoles at C3-Position via Palladium(II)-Catalyzed Isocyanide Insertion Strategy Leading to Diverse Heterocycles. J Org Chem 2016; 81:2837-48. [PMID: 26954483 DOI: 10.1021/acs.joc.6b00048] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Herein, we have reported an efficient Pd-catalyzed C-H functionalization of 2H-indazole at C3-position via an isocyanide insertion strategy for the synthesis of unprecedented benzoxazinoindazoles, indazoloquinaoxalines and benzoxazinoindazolones for the first time. Our new method provides an operationally simple and versatile route for a selective synthesis of 2-(2H-indazol-2-yl)phenols. Furthermore, we developed a sequential one-pot strategy for the synthesis of benzoxazinoindazolone under metal-oxidant-free conditions. We also achieved the isocyanide insertion between C(sp(2))-H and oxygen heteroatom for the first time. The key features of the present protocol are construction of 4 bonds in one-pot, synthesis of new skeletally diverse scaffolds, broad substrate scope, high yields and environmentally benign conditions.
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Affiliation(s)
- Shinde Vidyacharan
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi, Sangareddy, Medak District 502285, Telangana, India
| | - Arumugavel Murugan
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi, Sangareddy, Medak District 502285, Telangana, India
| | - Duddu S Sharada
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi, Sangareddy, Medak District 502285, Telangana, India
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23
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Sagar A, Nagarjuna Babu V, Shinde AH, Sharada DS. A metal-free cyclic iminium induced one-pot double annulation cascade: access to dihydroisoquinolinium (DHIQ) salts. Org Biomol Chem 2016; 14:10366-10370. [DOI: 10.1039/c6ob02089e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A reactive cyclic iminium induced one-pot Groebke–Blackburn–Bienayme (GBB) double annulation cascade (DAC) for the synthesis of skeletally diverse DHIQ salts has been described. The key features of this protocol are solvent-free, robust method, clean reaction profile and operational simplicity.
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Affiliation(s)
- A. Sagar
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | | | - Anand H. Shinde
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | - Duddu S. Sharada
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy
- India
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24
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Guo S, Dai Z, Yang Z, Zhu N, Wan L, Li X, Liu C, Fang Z, Guo K. Metal-free oxidative esterification of acetophenones with alcohols: a facile one-pot approach to α-ketoesters. RSC Adv 2016. [DOI: 10.1039/c6ra19485k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel oxidative esterification method for the synthesis of α-ketoesters has been developed, which is a facile one-pot approach to α-ketoesters from acetophenones with alcohols, especially under metal-free conditions with broad substrate scope.
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Affiliation(s)
- Shiyu Guo
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Zhongxue Dai
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Zhao Yang
- College of Engineering
- China Pharmaceutical University
- Nanjing
- China
| | - Ning Zhu
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Li Wan
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Xin Li
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Chengkou Liu
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
- State Key Laboratory of Materials-Oriented Chemical Engineering
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25
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Laha RM, Khamarui S, Manna SK, Maiti DK. In Situ Generated AgII-Catalyzed Selective Oxo-Esterification of Alkyne with Alcohol to α-Ketoester: Photophysical Study. Org Lett 2015; 18:144-7. [DOI: 10.1021/acs.orglett.5b03484] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Radha M. Laha
- Department of Chemistry, University of Calcutta, University College of Science, 92 A. P. C. Road, Kolkata 700009, India
| | - Saikat Khamarui
- Department of Chemistry, University of Calcutta, University College of Science, 92 A. P. C. Road, Kolkata 700009, India
| | - Saikat K. Manna
- Department of Chemistry, University of Calcutta, University College of Science, 92 A. P. C. Road, Kolkata 700009, India
| | - Dilip K. Maiti
- Department of Chemistry, University of Calcutta, University College of Science, 92 A. P. C. Road, Kolkata 700009, India
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26
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Sagar A, Babu VN, Dey A, Sharada DS. I2-promoted denitration strategy: one-pot three component synthesis of pyrrole-fused benzoxazines. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.04.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Karamthulla S, Khan MN, Choudhury LH. Microwave-assisted synthesis of novel 2,3-disubstituted imidazo[1,2-a]pyridines via one-pot three component reactions. RSC Adv 2015. [DOI: 10.1039/c4ra16298f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An expeditious one-pot, metal-free, three-component reaction of arylglyoxals, cyclic 1,3-dicarbonyls and 2-aminopyridines in the presence of molecular iodine under microwave irradiation is reported.
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Affiliation(s)
- Shaik Karamthulla
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-800013
- India
| | - Md. Nasim Khan
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-800013
- India
| | - Lokman H. Choudhury
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-800013
- India
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28
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Zheng Y, Mao J, Chen J, Rong G, Liu D, Yan H, Chi Y, Xu X. Unexpected CN bond formation via NaI-catalyzed oxidative de-tetra-hydrogenative cross-couplings between N,N-dimethyl aniline and sulfamides. RSC Adv 2015. [DOI: 10.1039/c5ra06773a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
A direct de-tetra-hydrogenative cross-coupling reaction between Csp3–H bonds and sulfamide under transition-metal-free conditions is reported to give the corresponding amidines.
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Affiliation(s)
- Yang Zheng
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Jincheng Mao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Jie Chen
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Guangwei Rong
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Defu Liu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Hong Yan
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Yongjian Chi
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Xinfang Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
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29
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Deshidi R, Rizvi MA, Shah BA. Highly efficient dehydrogenative cross-coupling of aldehydes with amines and alcohols. RSC Adv 2015. [DOI: 10.1039/c5ra17425b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A common protocol for the synthesis of amides, esters and α-ketoesters via cross dehydrogenative coupling of aldehydes and amines/alcohols has been developed.
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Affiliation(s)
- Ramesh Deshidi
- Academy of Scientific and Innovative Research (AcSIR)
- Natural Product Microbes
- CSIR-Indian Institute of Integrative Medicine
- India
| | | | - Bhahwal Ali Shah
- Academy of Scientific and Innovative Research (AcSIR)
- Natural Product Microbes
- CSIR-Indian Institute of Integrative Medicine
- India
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30
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Vidyacharan S, Sagar A, Sharada DS. A new route for the synthesis of highly substituted 4-aminoquinoline drug like molecules via aza hetero–Diels–Alder reaction. Org Biomol Chem 2015; 13:7614-8. [DOI: 10.1039/c5ob01023c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A new route has been developed for the synthesis of 4-aminoquinoline drug like moleculesviaaza hetero–Diels–Alder reaction starting from 2H-indazole as a diene for the first time.
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Affiliation(s)
- Shinde Vidyacharan
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Telangana
- Hyderabad
- India
| | - A. Sagar
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Telangana
- Hyderabad
- India
| | - Duddu S. Sharada
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Telangana
- Hyderabad
- India
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31
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Balachandra B, Shanmugam S, Muneeswaran T, Ramakritinan M. Iodine catalyzed one-pot synthesis of highly substituted N-methyl pyrroles via [3 + 2] annulation and their in vitro evaluation as antibacterial agents. RSC Adv 2015. [DOI: 10.1039/c5ra11094g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new class of highly substituted pyrroles have been synthesized via a simple, fast, and efficient method using environmentally friendly iodine catalyzed [3 + 2] annulation.
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Affiliation(s)
- Biguvu Balachandra
- Department of Organic Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai – 625 021
- India
| | - Sivakumar Shanmugam
- Department of Organic Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai – 625 021
- India
| | - Thillaichidambaram Muneeswaran
- Department of Marine and Coastal Studies
- School of Energy, Environment and Natural Resources
- Madurai Kamaraj University
- Madurai – 625 021
- India
| | - Muthiah Ramakritinan
- Department of Marine and Coastal Studies
- School of Energy, Environment and Natural Resources
- Madurai Kamaraj University
- Madurai – 625 021
- India
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32
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Sagar A, Babu VN, Sharada DS. Silica gel promoted environment-friendly synthesis of α-amino amidines and regioselective transformation of α-amino amidines into amidino substituted indazoles. RSC Adv 2015. [DOI: 10.1039/c5ra02491a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Environment-friendly three-component Ugi-type strategy (U-3CR) for the synthesis of α-amino amidines promoted by silica gel and further transformation into amidino substituted indazoles in regioselective manner under iron catalysis is presented.
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Affiliation(s)
- A. Sagar
- Department of Chemistry
- Indian Institute of Technology (IIT) Hyderabad
- India
| | | | - Duddu. S. Sharada
- Department of Chemistry
- Indian Institute of Technology (IIT) Hyderabad
- India
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33
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Shinde AH, Archith N, Malipatel S, Sharada DS. A facile one-pot protocol for the synthesis of tetrazolyl-tetrahydroisoquinolines via novel domino intramolecular cyclization/Ugi-azide sequence. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.10.076] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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