1
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Huang X, Zhou J, Pei SC, Cui HL. TBHP/Et 3N-Promoted Chemoselective Formylation and Peroxidation of Pyrrolo[2,1- a]isoquinolines. J Org Chem 2024; 89:6353-6363. [PMID: 38625867 DOI: 10.1021/acs.joc.4c00321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
An efficient formylation of pyrrolo[2,1-a]isoquinoline derivatives has been reached by the use of TBHP (tBuOOH) and Et3N as the mediator. In this strategy, CHO and CDO can be readily incorporated into heteroarenes by the utilization of CHCl3 and CDCl3 as the carbonyl sources. Interestingly, a solvent-controlled chemoselectivity was observed. The use of PhCl as a solvent resulted in dearomatization and peroxidation of pyrrolo[2,1-a]isoquinolines, delivering functionalized peroxides in 53-64% yields.
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Affiliation(s)
- Xiang Huang
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, P. R. China
| | - Jing Zhou
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
| | - Shu-Chen Pei
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, P. R. China
| | - Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
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2
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Lai D, Bhattacharjee S, Mandal S, Ghosh S, Sahoo P, Sinha S, Hajra A. Iodine(III)-promoted oxidative carbotrifluoromethylation of maleimides with imidazopyridines and Langlois' reagent. Chem Commun (Camb) 2024; 60:2232-2235. [PMID: 38315091 DOI: 10.1039/d3cc05889a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
A metal-free protocol for oxidative carbotrifluoromethylation of maleimides with imidazopyridines and Langlois' reagent has been developed using (diacetoxyiodo)benzene (PIDA) as an oxidant. This three-component strategy enables one-step construction of 3,4-disubstituted maleimides in good yields with high functional group tolerance. Both experimental and theoretical studies support the proposed radical reaction mechanism.
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Affiliation(s)
- Dipti Lai
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
- ISERC, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Suvam Bhattacharjee
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
| | - Saurodeep Mandal
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
| | - Sumit Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
- ISERC, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Prithidipa Sahoo
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
| | - Subrata Sinha
- ISERC, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
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3
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Huang DY, Liu HS, Wang EH, Peng M, Deng TF, Gao M, Liu S, Li QJ, Yang LS, Yang XS. KF-catalyzed direct thiomethylation of carboxylic acids with DMSO to access methyl thioesters. Org Biomol Chem 2024; 22:1453-1457. [PMID: 38276970 DOI: 10.1039/d3ob01991h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
With dimethyl sulfoxide (DMSO) as the methylthio source, a KF-catalyzed strategy was employed for the direct thiomethylation of carboxylic acids with DMSO for the preparation of methyl thioesters. In this process, a wide range of methyl thioesters were obtained in moderate to excellent yields. This novel strategy features the first use of DMSO as a methylthiolating agent for the construction of methyl thioesters, transition metal-free conditions, inexpensive reagents, easy workup, broad substrate scope and sustainability. Additionally, this procedure can be readily scaled up to a gram scale.
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Affiliation(s)
- Ding-Yong Huang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China.
- Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China
| | - Hong-Shi Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China.
- Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China
| | - En-Hua Wang
- Department of Medicine and Food, Guizhou Vocational College of Agriculture, Guiyang 550041, PR China
| | - Mei Peng
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China.
- Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China
| | - Ting-Fei Deng
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China.
- Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China
| | - Ming Gao
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China.
- Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China
| | - Sheng Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China.
- Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China
| | - Qi-Ji Li
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China.
- Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China
| | - Li-Shou Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China.
- Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China
| | - Xiao-Sheng Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China.
- Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China
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4
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Chen XH, Lhazom T, Cui HL. NH 4OAc/DMSO-Promoted Benzylation of Pyrrolo[2,1- a]isoquinolines. J Org Chem 2023; 88:13598-13609. [PMID: 37728513 DOI: 10.1021/acs.joc.3c01302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Benzylation of pyrrolo[2,1-a]isoquinoline derivatives has been realized with various phenols by the use of ammonium acetate as a promoter (20 examples, up to 84% yield). DMSO served as the source of methylene and solvent. The employment of iron chloride as a catalyst can also afford the desired benzylated products in moderate to good yields (11 examples, up to a 74% yield).
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Affiliation(s)
- Xiao-Hui Chen
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
| | - Tsesong Lhazom
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
| | - Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
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5
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Faraz S, Khan AT. p-TSA·H 2O catalyzed metal-free and environmentally benign synthesis of 4-aryl quinolines from arylamine, arylacetylene, and dimethyl sulfoxide. Org Biomol Chem 2023; 21:7553-7560. [PMID: 37519239 DOI: 10.1039/d3ob00993a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
An environmentally benign and metal-free synthesis of 4-aryl quinolines is reported by employing readily available arylamine, arylacetylene, and DMSO in the presence of 20 mol% p-TSA·H2O. In the present protocol, the solvent DMSO serves as a reactant cum solvent for providing the C2 carbon atom of the quinoline skeleton. Notably, the reaction proceeds effectively and efficiently without the involvement of any metal catalyst, ligand, and co-catalyst as additives and inert atmospheric reaction conditions. This method provides high atom economy and good yields, and two C-C and one C-N bonds are formed in a single step through a three-component reaction.
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Affiliation(s)
- Simra Faraz
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Abu Taleb Khan
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
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6
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Tang Z, Hong G, Sun S, Wang L. Electrochemically Enabled Direct C3-Formylation of Imidazopyridines with Me 3 N as a Carbonyl Source. Chem Asian J 2023; 18:e202300001. [PMID: 36772840 DOI: 10.1002/asia.202300001] [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: 01/02/2023] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 02/12/2023]
Abstract
A metal-free and oxidant-free electrochemically enabled strategy for C-3 formylation of imidazopyridines using trimethylamine as a one-carbon source has been established. This conversion has high functional group compatibility under mild conditions and ensures late-stage functionalization of pharmaceutical molecules. Furthermore, unexpected hexafluoroisopropoxylation products have been observed in some cases. Mechanistic studies using cyclic voltammetry and control experiments reveal the key intermediate of the formylation process.
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Affiliation(s)
- Zhicong Tang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, 200237, Shanghai, P. R. China
| | - Gang Hong
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, 200237, Shanghai, P. R. China
| | - Shiyun Sun
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, 200237, Shanghai, P. R. China
| | - Limin Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, 200237, Shanghai, P. R. China
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7
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Zheng T, Li Z, Luo Y, Zhang J, Xu J. A direct and efficient 3-halooxidation of indoles using DMSO as oxygen source. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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8
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Yeslam Saeed Atif H, Mohsin M, Durrani AN. Highly Efficient Microwave-Assisted Synthesis of 2-Arylimidazo[1,2-a]Pyridine-3-Carbaldehydes in PEG-400. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2154369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Mohammad Mohsin
- Department of Chemistry, Rafiq Zakaria College for Women, Aurangabad (M.S.), India
| | - Ayesha N. Durrani
- Department of Chemistry, Rafiq Zakaria College for Women, Aurangabad (M.S.), India
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9
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Saeed HY, Farooqui M, Durrani AN. Convenient and highly efficient microwave-assisted synthesis of 2-Arylimidazo[1,2-a]pyrimidine-3-carbaldehydes in glycerol. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2158746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Hani Y. Saeed
- Department of Chemistry, Rafiq Zakaria College for Women, Aurangabad, India
| | - Maqdoom Farooqui
- Department of Chemistry, Rafiq Zakaria College for Women, Aurangabad, India
| | - Ayesha N. Durrani
- Department of Chemistry, Rafiq Zakaria College for Women, Aurangabad, India
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10
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Xu X, Shi Y, Wang D, Ding Y, Chen S, Zhang X. Cobalt(III)-Catalyzed and DMSO-Involved Allylation of 1,3-Dicarbonyl Compounds with Alkenes. J Org Chem 2022; 87:14352-14363. [PMID: 36263891 DOI: 10.1021/acs.joc.2c01796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Cobalt(III)-catalyzed allylation of 1,3-dicarbonyl compounds has been reported with in situ generated allyl reagents from alkenes and dimethyl sulfoxide (DMSO). This novel protocol enables a high regio- and stereoselective access for a broad range of allyl 1,3-dicarbonyl compounds. In the transformation, DMSO plays the role of a C1 source, and it incorporates with alkenes to form the allyl reagent allylic methyl thioether. Moreover, a multiple-step pathway has been proposed to rationalize the mechanism study, which involves silver-mediated coupling, Co(III)-catalyzed π-allylation, and intermolecular nucleophilic substitution.
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Affiliation(s)
- Xuefeng Xu
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Yue Shi
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Di Wang
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Yanhua Ding
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Shuyang Chen
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Xu Zhang
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
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11
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Chen XH, Cui HL. Modification of Pyrrolo[2,1‐a]isoquinolines via Iron‐Catalyzed Aminomethylenation with Amines and Dimethyl Sulfoxide. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiao-Hui Chen
- Chongqing University of Arts and Sciences Laboratory of Asymmetric Synthesis CHINA
| | - Hai-Lei Cui
- Chongqing University of Arts and Sciences Laboratory of Asymmetric Synthesis 319 Honghe Ave, Yongchuan, Chongqing 402160 Chongqing CHINA
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12
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Dai PF, Xu H. Novel Chlorination of Imidazo‐Fused Heterocycles via Dichloro(aryl)‐λ3‐iodanes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Peng-Fei Dai
- First Affiliated Hospital of Anhui Medical University Department of Nuclear Medicine 218 Jixi Road 230022 Hefei CHINA
| | - Huiqin Xu
- First Affiliated Hospital of Anhui Medical University Department of Nuclear Medicine 230022 NanJing CHINA
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13
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Li JQ, Chen XH, Cui HL. Modification of Pyrrolo[2,1- a]isoquinolines and Pyrrolo[1,2- a]quinolines with Ammonium Acetate and Dimethyl Sulfoxide via Methylthiomethylation. J Org Chem 2022; 87:2421-2434. [PMID: 35138091 DOI: 10.1021/acs.joc.1c02322] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An efficient methylthiomethylation of pyrroloisoquinolines and pyrroloquinolines has been reached by the use of ammonium acetate and dimethyl sulfoxide. Methylthiomethylated heterocycles can be obtained in moderate to good yields in most cases, while trace amounts to good yields of methylene-bridged products can be observed. Choice of DMSO activator and its amount have a great influence on the chemoselectivity of this process. It is worth noting that this process can also be scalable. Another feature of this process is that the product can be transformed to sulfone and sulfoxide easily.
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Affiliation(s)
- Jia-Qin Li
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P.R. China
| | - Xiao-Hui Chen
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P.R. China.,Tonichem Pharmaceutical Technology Co., Ltd, Huizhou 516008, P.R. China
| | - Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P.R. China
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14
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Kalari S, Karale UB, Rode HB. Selectfluor-Mediated Synthesis of β-Acyl Allyl Sulfones/β-Acyl Allyl Benzotriazoles from Ketones/Acetylenes, Aryl Sulfinates/Benzotriazole, and DMSO as a Dual-Carbon Synthon. J Org Chem 2022; 87:2435-2445. [PMID: 35025500 DOI: 10.1021/acs.joc.1c02348] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A Selectfluor-mediated approach for the synthesis of β-acyl allyl sulfones/β-acyl allyl benzotriazoles with excellent atom economy from readily available acetophenones/aryl acetylenes, aryl sulfinates/benzotriazoles, and dimethyl sulfoxide (DMSO) is described. In this protocol, DMSO acts as a dual-carbon synthon, resulting in a transition-metal-free construction of two C-C and one C-S or two C-C and one C-N bonds in one pot. This approach is extended to generate chemically diverse compounds. Additionally, β-acyl allyl sulfones/β-acyl allyl benzotriazoles were prepared from acetylenes instead of acetophenones.
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Affiliation(s)
- Saradhi Kalari
- Department of Organic Synthesis and Process Chemistry, CSIR─Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201002, India
| | - Uttam B Karale
- Department of Organic Synthesis and Process Chemistry, CSIR─Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201002, India
| | - Haridas B Rode
- Department of Organic Synthesis and Process Chemistry, CSIR─Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201002, India
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15
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Abstract
Abstract:
Dimethyl sulfoxide (DMSO) is not only a common and cheap aprotic polar solvent with low toxicity, but also serves as an efficient and multipurpose reactant and has widely been used in organic synthesis. DMSO as an important precursor can effectively introducea broad range of functional fragments into organic molecules, such as -Me, -CH, -CH2, -SMe2, -CH2SMe, -CH2SOMe, -SMe, -SO2Me, -SOMe or as O substituents, and serves as a mild oxidant in organic transformations. Many significant achievements based on DMSO as a synthon in synthetic chemistry have rapidly made over the past several years. To help researchers further understand the recent advances in the field, the review summarizes the applications of DMSO as carbon, sulfur, and oxygen sources and is used as the dual synthon in synthetic transformations.
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Affiliation(s)
- Su-qian CAI
- School of Pharmaceutical Sciences, Guilin Medical University, Guangxi Guilin 541199, P. R. China,
| | - Ke-feng ZHANG
- School of Pharmaceutical Sciences, Guilin Medical University, Guangxi Guilin 541199, P. R. China,
| | - Xiao-hua CAI
- School of Chemical Engineering, Guizhou Minzu University, Guizhou, Guiyang 550025, P. R., China
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16
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Qiao H, Yang L, Sun W, Chen Y, Wang J, Wang Y, Dong H. Metal-Free C3-H Hydrazination of Imidazo[1,2-a]pyridine with Azodiformates in Water at Room Temperature. HETEROCYCLES 2022. [DOI: 10.3987/com-21-14576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Qiao H, Yang L, Chen Y, Wang J, Sun W, Dong H, Wang Y. An Efficient Three-Component Tandem Approach for the Synthesis of Imidazoheterocycle-Hydrazine Derivatives under Mild Conditions. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202110015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Moazzam A, Farid SM, Khaleghi N, Alizadeh N, Mahdavi M. Photochemical regioselective C–H arylation of imidazo[1,2- a]pyridine derivatives using chlorophyll as a biocatalyst and diazonium salts. NEW J CHEM 2022. [DOI: 10.1039/d1nj06059g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This communication describes the development of a mild method for the arylation of imidazo[1,2-a]pyridine with diazonium salt derivatives and using chlorophyll as a biocatalyst via visible-light catalysis.
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Affiliation(s)
- Ali Moazzam
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Sara Moghadam Farid
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Nima Khaleghi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Naeimeh Alizadeh
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
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19
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Kalari S, Shinde AU, Rode HB. Methylene-Tethered Arylsulfonation and Benzotriazolation of Aryl/Heteroaryl C-H Bonds with DMSO as a One-Carbon Surrogate. J Org Chem 2021; 86:17684-17695. [PMID: 34851649 DOI: 10.1021/acs.joc.1c01914] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The Selectfluor-mediated approach toward the synthesis of methylene-tethered arylsulfonation and benzotriazolation of imidazopyridines has been described. The reaction involves imidazopyridine, aryl sulfinate, or benzotriazole and dimethyl sulfoxide (DMSO) in the presence of Selectfluor, where DMSO acts as a one-carbon synthon. The protocol has been extended to the methylene-tethered arylsulfonation and benzotriazolation of β-naphthols. The mechanistic insights show that the intermediate 3-((methylthio)methyl)-2-phenylimidazo[1,2-a]pyridine is generated from imidazopyridine, DMSO, and Selectfluor. The nucleophilic displacement by the aryl sulfinate salt or benzotriazole on the intermediate afforded the product.
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Affiliation(s)
- Saradhi Kalari
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India.,Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201 002, India
| | - Akash U Shinde
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India
| | - Haridas B Rode
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India.,Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201 002, India
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20
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Li J, Zhou J, Wang Y, Yu Y, Liu Q, Yang T, Chen H, Cao H. Mechanistic insight into the synergistic Cu/Pd-catalyzed carbonylation of aryl iodides using alcohols and dioxygen as the carbonyl source. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1122-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Shi Y, Xu X, Chen X, Gao W, Zhang X. Synthesis of Cyclopentenes and Cyclohexenes Via Cobalt(II)-Catalyzed Oxidative Cyclization. J Org Chem 2021; 86:15335-15344. [PMID: 34708650 DOI: 10.1021/acs.joc.1c01900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A unique method for the synthesis of cyclopentenes and cyclohexenes has been achieved by the coupling of diketones and alkenes under cobalt(II) catalysis and dimethyl sulfoxide involvement. Under optimal conditions, the formation of five- and six-membered rings can be readily controlled by the α-position substitution of styrenes. This process is proposed to proceed through a reaction sequence of oxidative coupling (mediated by K2S2O8), regioselective alkene insertion (promoted by cobalt), and intramolecular attack of the resulting allylcobalt species on the carbonyl group or methyl group in the reactive methylene process.
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Affiliation(s)
- Yue Shi
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Xuefeng Xu
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Xinfeng Chen
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Wenchao Gao
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Xu Zhang
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
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22
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Li M, Li G, Dai C, Zhou W, Zhan W, Gao M, Rong Y, Tan Z, Deng W. Visible-light-promoted direct C3-trifluoromethylation and perfluoroalkylation of imidazopyridines. Org Biomol Chem 2021; 19:8301-8306. [PMID: 34545902 DOI: 10.1039/d1ob01417j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An efficient method for direct trifluoromethylation and perfluoroalkylation at C3 of imidazopyridines through visible light-promoted C-H bond functionalization was developed. Under the irradiation of a blue LED, a series of C3-perfluoroalkyl-substituted imidazopyridines were synthesized from the corresponding imidazopyridines and perfluoroalkyl iodides in moderate to good yields at room temperature. It should be mentioned that this reaction proceeded in the absence of any transition-metal catalyst, oxidant and photocatalyst.
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Affiliation(s)
- Meichen Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Gaolin Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Chenxun Dai
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Wenjun Zhou
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Wenqiang Zhan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Muyang Gao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Yuan Rong
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Ze Tan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Wei Deng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
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23
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Lu LH, Ou G, Zhao X, Wang Y, Chen X, Liao W, Li S, Wu C. Selective difunctionalization of electron-deficient alkynes: access to ( E)-2-iodo-3-(methylthio)acrylate. Org Biomol Chem 2021; 19:8128-8132. [PMID: 34473178 DOI: 10.1039/d1ob01287h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A convenient and efficient approach to (E)-2-iodo-3-(methylthio)acrylate has been developed through direct iodothiomethylation of alkynes with aqueous HI and DMSO under mild conditions. This novel protocol has demonstrated a unique difunctionalization of electron-deficient alkynes with a broad substrate scope and excellent functional-group tolerance. Preliminary mechanistic studies indicated that prior diiodination of alkynes, followed by nucleophilic substitution with in situ generated DMS led to the formation of (E)-2-iodo-3-(methylthio)acrylate.
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Affiliation(s)
- Ling-Hui Lu
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China.
| | - Guangchuan Ou
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China.
| | - Xiongjie Zhao
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China.
| | - Yufei Wang
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China.
| | - Xuelian Chen
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China.
| | - Wenjun Liao
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China.
| | - Shundan Li
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China.
| | - Chao Wu
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China.
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24
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Huang J, Chen Z, Wu J. Recent Progress in Methyl-Radical-Mediated Methylation or Demethylation Reactions. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02010] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Jiapian Huang
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, and Jiangxi Key Laboratory of Green Chemistry, College of Chemistry & Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, P. R. China
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Zhiyuan Chen
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, and Jiangxi Key Laboratory of Green Chemistry, College of Chemistry & Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, P. R. China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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25
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Wu Y, Li L, Wen K, Deng J, Chen J, Shi J, Wu T, Pang J, Tang X. Copper-Catalyzed C-3 Functionalization of Imidazo[1,2- a]pyridines with 3-Indoleacetic Acids. J Org Chem 2021; 86:12394-12402. [PMID: 34387491 DOI: 10.1021/acs.joc.1c01371] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A copper-catalyzed C-3 functionalization of imidazo[1,2-a]pyridines with 3-indoleacetic acids through an aerobic oxidative decarboxylative process has been developed. The protocol provided a series of 3-(1H-indol-3-ylmethyl)-imidazo[1,2-a]pyridines in moderate to good yields under simple reaction conditions. Importantly, some products exhibited potent antiproliferative activity in cancer cell lines.
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Affiliation(s)
- Yinrong Wu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Lu Li
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Kangmei Wen
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Jie Deng
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Jiewen Chen
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Jie Shi
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Ting Wu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Jianxin Pang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Xiaodong Tang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
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26
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Bhattacharjee S, Laru S, Ghosh P, Hajra A. Potassium Persulfate Mediated Chemodivergent C-3 Functionalization of 2 H-Indazoles with DMSO as C 1 Source. J Org Chem 2021; 86:10866-10873. [PMID: 34286979 DOI: 10.1021/acs.joc.1c01188] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A facile, efficient, and transition-metal-free chemodivergent C-3 functionalization of 2H-indazoles was developed under aerobic conditions using carboxylic acid and DMSO as the combined source of the carboxylic acid ester group and DMSO as the formylating agent. A series of formylated indazoles and carboxylic acid esters of indazole derivatives were produced in moderate to excellent yields. The mechanistic studies suggest that the reactions probably proceed through a radical pathway.
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Affiliation(s)
- Suvam Bhattacharjee
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Sudip Laru
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Payel Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
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27
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Li JQ, Tan HL, Ma DD, Zhu XX, Cui HL. Formylation and Bromination of Pyrrolo[2,1- a]isoquinoline Derivatives with Bromoisobutyrate and Dimethyl Sulfoxide. J Org Chem 2021; 86:10118-10128. [PMID: 34213904 DOI: 10.1021/acs.joc.1c00844] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We have developed an efficient formylation of pyrroloisoquinolines using bromoisobutyrate and dimethyl sulfoxide as carbonyl reagent. Various formylated pyrroloisoquinolines could be prepared in good yields (up to 94%). This formylation process can be easily scaled up to gram scale with good yield. In most cases of pyrroloisoquinolines without methoxy groups, the combination of bromoisobutyrate and dimethyl sulfoxide could act as a bromination reagent, delivering brominated pyrroloisoquinolines in acceptable to good yields (up to 82%).
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Affiliation(s)
- Jia-Qin Li
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P.R. China
| | - Hui-Lin Tan
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P.R. China
| | - Dan-Dan Ma
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P.R. China
| | - Xin-Xin Zhu
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P.R. China
| | - Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P.R. China
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28
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Chakraborty N, Dahiya A, Rakshit A, Modi A, Patel BK. An expedient route to tricyanovinylindoles and indolylmaleimides from o-alkynylanilines utilising DMSO as a one-carbon synthon. Org Biomol Chem 2021; 19:6847-6857. [PMID: 34318852 DOI: 10.1039/d1ob01086g] [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 Pd(ii)/Cu(ii) catalysed domino synthesis of tricyanovinylindoles has been achieved using DMSO as a one-carbon synthon. The reaction proceeds via the construction of 2-aryl-3-formyl indole followed by sequential addition of malononitrile and a CN resulting in two C-C, one C[double bond, length as m-dash]C and one C-N bonds in the final product. Furthermore, post-synthetic modification results in the unprecedented formation of 4-cyano-3-indolylmaleimides. Photophysical studies of selected compounds show emission in the visible range.
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Affiliation(s)
- Nikita Chakraborty
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, Assam, India.
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29
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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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30
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Gan Z, Zhu X, Yan Q, Song X, Yang D. Oxidative dual C–H sulfenylation: A strategy for the synthesis of bis(imidazo[1,2-a]pyridin-3-yl)sulfanes under metal-free conditions using sulfur powder. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.12.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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31
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Kalari S, Balasubramanian S, Rode HB. Difluorinative-hydroxylation and C-3 functionalization (halogenation/SCN/NO) of imidazopyridine using Selectfluor as fluorine source or oxidant respectively. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153028] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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32
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Lin Z, Huang L, Yuan G. Electrosynthesis of sulfonamides from DMSO and amines under mild conditions. Chem Commun (Camb) 2021; 57:3579-3582. [PMID: 33709092 DOI: 10.1039/d1cc00026h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
With DMSO as the solvent and the precursor of a -SO2Me unit at room temperature, a novel electrochemical oxidization and amination of DMSO with amines was developed for the synthesis of sulfonamides. Our investigations reveal that this transformation may involve a radical process and an electrochemical oxidization of DMSO.
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Affiliation(s)
- Zhiguan Lin
- 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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33
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Luo R, Guo L, Liu W, Wang S. Copper-catalyzed synthesis of phenolic compounds with DMSO as the methylene source. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1902536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Run Luo
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou, China
| | - Lina Guo
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou, China
| | - Wenjie Liu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou, China
- Guangdong Cosmetics Engineering & Technology Research Center, Guangzhou, China
| | - Shaohua Wang
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou, China
- Guangdong Cosmetics Engineering & Technology Research Center, Guangzhou, China
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34
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Konwar D, Bora U. Recent Developments in Transition‐Metal‐Catalyzed Regioselective Functionalization of Imidazo[1, 2‐
a
]pyridine. ChemistrySelect 2021. [DOI: 10.1002/slct.202100144] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Dipika Konwar
- Department of Chemical Sciences Tezpur University, Napaam, Tezpur PIN 784028 Assam India
| | - Utpal Bora
- Department of Chemical Sciences Tezpur University, Napaam, Tezpur PIN 784028 Assam India
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35
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Zhang L, Wu Y, Wang N, Gao X, Yan Z, Xu B, Liu N, Wang B, Xing Y. Methylthiolation for Electron‐Rich Heteroarenes with DMSO‐TsCl. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lei‐Yang Zhang
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 China
| | - Yue‐Hua Wu
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 China
| | - Nai‐Xing Wang
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 China
| | - Xue‐Wang Gao
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 China
| | - Zhan Yan
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 China
| | - Bao‐Cai Xu
- School of Food and Chemical Engineering Beijing Technology and Business University Beijing 100048 China
| | - Ning Liu
- State Key Laboratory of Fluorine & Nitrogen Chemicals Xi'an Modern Chemistry Research Institute Xi'an 710065 China
| | - Bo‐Zhou Wang
- State Key Laboratory of Fluorine & Nitrogen Chemicals Xi'an Modern Chemistry Research Institute Xi'an 710065 China
| | - Yalan Xing
- Department of Chemistry William Paterson University of New Jersey New Jersey 07470 United States
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36
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Wang Y, Zheng H, Xu J, Zhuang C, Liu X, Cao H. Access to diverse primary, secondary, and tertiary amines via the merger of controllable cleavage of triazines and site-selective functionalization. Org Chem Front 2021. [DOI: 10.1039/d1qo00883h] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
An efficient approach for divergent synthesis of primary, secondary, and tertiary amines via the merger of controllable cleavage of triazines and site-selective functionalization is disclosed.
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Affiliation(s)
- Yuhan Wang
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Huitao Zheng
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Jiajia Xu
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Canzhan Zhuang
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Xiang Liu
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Hua Cao
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
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37
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Liu X, Li W, Liu H, Cao H. Application on the Construction of Imidazo[1,2- a]pyridines C-3 Canbon-Hetero Bonds by Visible-Light Catalysis and Electrochemistry. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202012026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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38
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Chen A, Yang D, Yu Y, Liu X, Rao C, Lin H, Guo P. Cu-catalyzed cross-coupling of methyl ketones and pyridin-2-amines for the synthesis of N-(2-pyridyl)-α-ketoamides. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820950222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
An efficient copper-catalyzed strategy for the synthesis of α-ketoamides via cross-coupling of methyl ketones and pyridin-2-amines is described. This transformation has provided a simple process for the formation of C−N and C=O bonds to prepare α-ketoamides, which are important substrates and intermediates for the preparation of fine chemicals. The reaction mechanism is investigated, which suggests that the reaction proceeds via a radical pathway.
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Affiliation(s)
- Ali Chen
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, P.R. China
| | - Daji Yang
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, P.R. China
| | - Yue Yu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, P.R. China
| | - Xiang Liu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, P.R. China
| | - Chuixiong Rao
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, P.R. China
| | - Haoming Lin
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, P.R. China
| | - Pengfeng Guo
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, P.R. China
- Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, P.R. China
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39
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Zhang Y, Ding Y, Chen R, Ma Y. One‐pot Cascade Reaction for the Synthesis of Phenanthridines via Suzuki Coupling/C−H Oxidation/Aromatization. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000949] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yi Zhang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering Taizhou University 1139 Shifu Avenue Taizhou, 318000 People's Republic of China
- School of Pharmaceutical Science Zhejiang Chinese Medical University Hangzhou 310053 People's Republic of China
| | - Yuxin Ding
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering Taizhou University 1139 Shifu Avenue Taizhou, 318000 People's Republic of China
- School of Pharmaceutical Science Zhejiang Chinese Medical University Hangzhou 310053 People's Republic of China
| | - Rener Chen
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering Taizhou University 1139 Shifu Avenue Taizhou, 318000 People's Republic of China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering Taizhou University 1139 Shifu Avenue Taizhou, 318000 People's Republic of China
- School of Pharmaceutical Science Zhejiang Chinese Medical University Hangzhou 310053 People's Republic of China
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40
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Qiao S, Qian PC, Chen F, Cheng J. Iron-catalyzed radical cascade 6- endo cyclization of dienes towards fused nitrogen heterocycles initiated by an alkoxycarbonyl radical. Org Biomol Chem 2020; 18:7086-7089. [PMID: 32910128 DOI: 10.1039/d0ob01438a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An iron-catalyzed radical cascade cyclization of dienes initiated by an alkoxycarbonyl radical has been developed in the presence of (NH4)2S2O8, leading to a series of fused nitrogen heterocyclic compounds under relatively mild reaction conditions. The reaction is triggered by the addition of an alkyoxycarbonyl radical derived from the cleavage of alkoxyformyl hydrazide. Afterward, the formed nucleophilic radical preferred addition to the electron-neutral vinyl rather than the electron-deficient vinyl, followed by cascade 6-endo cyclization and further radical cyclization.
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Affiliation(s)
- Shanshan Qiao
- School of Petrochemical Engineering, and Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou 213164, P. R. China.
| | - Peng-Cheng Qian
- Institute of New Materials & Industry Technology, College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Fan Chen
- Institute of New Materials & Industry Technology, College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Jiang Cheng
- School of Petrochemical Engineering, and Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou 213164, P. R. China. and Institute of New Materials & Industry Technology, College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
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41
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Patel OPS, Nandwana NK, Legoabe LJ, Das BC, Kumar A. Recent Advances in Radical C−H Bond Functionalization of Imidazoheterocycles. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000633] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Om P. S. Patel
- Department of Chemistry Birla Institute of Technology and Science Pilani Pilani Campus 333031 Rajasthan India
- Centre of Excellence for Pharmaceutical Sciences North-West University Private Bag X6001 Potchefstroom 2520 South Africa
| | - Nitesh K. Nandwana
- Department of Chemistry Birla Institute of Technology and Science Pilani Pilani Campus 333031 Rajasthan India
- Departments of Medicine and Pharmacological Sciences Icahn School of Medicine at Mount Sinai New York, NY 10029 USA
| | - Lesetja J. Legoabe
- Centre of Excellence for Pharmaceutical Sciences North-West University Private Bag X6001 Potchefstroom 2520 South Africa
| | - Bhaskar C. Das
- Departments of Medicine and Pharmacological Sciences Icahn School of Medicine at Mount Sinai New York, NY 10029 USA
| | - Anil Kumar
- Department of Chemistry Birla Institute of Technology and Science Pilani Pilani Campus 333031 Rajasthan India
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42
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Chowdhury A, Patel S, Sharma A, Das A, Meshram P, Shard A. A perspective on environmentally benign protocols of thiazole synthesis. Chem Heterocycl Compd (N Y) 2020. [DOI: 10.1007/s10593-020-02680-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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43
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Babar DA, Rode HB. Cobalt-Catalyzed Direct Arylation of Imidazo[1,2-a
]pyridine with Aryl Iodides. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000006] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Dattatraya A. Babar
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad Telangana India
- CSIR-HRDC Campus; Academy of Scientific and Innovative Research (AcSIR); Kamla Nehru Nagar 201001 Ghaziabad Uttar Pradesh India
| | - Haridas B. Rode
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad Telangana India
- CSIR-HRDC Campus; Academy of Scientific and Innovative Research (AcSIR); Kamla Nehru Nagar 201001 Ghaziabad Uttar Pradesh India
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44
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Dong J, Wang X, Song H, Liu Y, Wang Q. Photoredox‐Catalyzed Redox‐Neutral Minisci C−H Formylation of
N
‐Heteroarenes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901481] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Jianyang Dong
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of ChemistryNankai University Tianjin 300071 People's Republic of China
| | - Xiaochen Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of ChemistryNankai University Tianjin 300071 People's Republic of China
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of ChemistryNankai University Tianjin 300071 People's Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of ChemistryNankai University Tianjin 300071 People's Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of ChemistryNankai University Tianjin 300071 People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 People's Republic of China
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45
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Li X, Wang S, Zang J, Liu M, Jiang G, Ji F. Copper- and DMF-mediated switchable oxidative C–H cyanation and formylation of imidazo[1,2-a]pyridines using ammonium iodide. Org Biomol Chem 2020; 18:9100-9108. [DOI: 10.1039/d0ob01838d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The cyanation and formylation of imidazo[1,2-a]pyridines were developed under copper-mediated oxidative conditions using ammonium iodide and DMF as a nontoxic combined cyano-group source and DMF as a formylation reagent.
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Affiliation(s)
- Xuan Li
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- P. R. China
| | - Shoucai Wang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- P. R. China
| | - Jiawang Zang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- P. R. China
| | - Meichen Liu
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- P. R. China
| | - Guangbin Jiang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- P. R. China
| | - Fanghua Ji
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- P. R. China
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46
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Wang S, Zhang S, Liu M, Zang J, Jiang G, Ji F. Palladium-catalyzed C3-selective C–H oxidative carbonylation of imidazo[1,2-a]pyridines with CO and alcohols: a way to access esters. Org Chem Front 2020. [DOI: 10.1039/d0qo00003e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A palladium-catalyzed C3-selective C–H oxidative carbonylation for the synthesis of various esters from imidazo[1,2-a]pyridines and CO with high efficiency and high atom economy has been developed.
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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
| | - Siyu 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
| | - Meichen Liu
- 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
| | - Jiawang Zang
- 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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47
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Jiang S, Yang Z, Guo Z, Li Y, Chen L, Zhu Z, Chen X. Transition metal-free α-methylation of 1,8-naphthyridine derivatives using DMSO as methylation reagent. Org Biomol Chem 2019; 17:7416-7424. [PMID: 31359026 DOI: 10.1039/c9ob01490j] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A practical approach to the direct α-methylation of 1,8-naphthyridines under mild reaction conditions has been developed using simple and readily available DMSO as a convenient and environmentally friendly carbon source. This method is transition metal-free and highly chemoselective, shows good functional group tolerance, and uses DMSO as a methyl source, providing efficient and rapid access to an important compound class, 2-methyl-1,8-naphthyridines.
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Affiliation(s)
- Shaohua Jiang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
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48
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Zhao XM, Huang EL, Zhu YS, Li J, Song B, Zhu X, Hao XQ. Oxidative sulfonamidomethylation of imidazopyridines utilizing methanol as the main C1 source. Org Biomol Chem 2019; 17:4869-4878. [PMID: 31041985 DOI: 10.1039/c9ob00596j] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An efficient one pot, three component synthesis of C3 sulfonamidomethylated imidazopyridines has been disclosed under metal-free conditions, which utilized the commercially available and renewable reagent methanol as the main methylene source. A wide range of substituted imidazopyridines and sulfamides/amines were well tolerated to afford the corresponding products in up to 92% yield. In the isotopic labelling experiment, it was found that a minor part of the methylene also originated from DTBP. Moreover, the radical scavenger reactions were conducted, which suggested that a free-radical mechanism was probably not involved. The current methodology featured several advantages, including broad substrate scope, good functional group tolerance and high reaction efficiency.
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Affiliation(s)
- Xue-Mei Zhao
- College of Chemistry and Molecular Engineering, School of Life Sciences, Zhengzhou University, Zhengzhou 450001, People's Republic of China.
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49
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Tashrifi Z, Khanaposhtani MM, Larijani B, Mahdavi M. Dimethyl Sulfoxide: Yesterday's Solvent, Today's Reagent. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901021] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Zahra Tashrifi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences InstituteTehran University of Medical Sciences Tehran I. R. Iran
| | | | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences InstituteTehran University of Medical Sciences Tehran I. R. Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences InstituteTehran University of Medical Sciences Tehran I. R. Iran
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50
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Said MS, Mishra A, Pandole S, Nayak RA, Kumar P, Gajbhiye JM. Regioselective One‐Pot Synthesis of 3‐Fluoro‐Imidazo[1,2‐a]pyridines from Styrene. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900521] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Madhukar S. Said
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune- 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Ankita Mishra
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune- 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Satish Pandole
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune- 411008 India
| | - Rashmi A. Nayak
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune- 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Pradeep Kumar
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune- 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Jayant M. Gajbhiye
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune- 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
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