1
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Cao WX, Zhu L, He Y, Wang R, Liu M, Ouyang Q, Xiao Q. Copper-Catalyzed Aryne Insertion into the Carbon-Iodine Bond of Heteroaryl Iodides. Angew Chem Int Ed Engl 2023; 62:e202305146. [PMID: 37571857 DOI: 10.1002/anie.202305146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 08/07/2023] [Accepted: 08/10/2023] [Indexed: 08/13/2023]
Abstract
Aryne insertions into the carbon-iodine bond of heteroaryl iodides has been achieved for the first time. This novel reaction provides an efficient pathway for the synthesis of valuable building blocks 2-iodoheterobiaryls from heteroaryl iodides and o-silylaryl triflates in excellent regioselectivity. The copper(I) catalyst, which bears a N-heterocyclic carbene (NHC) ligand, is essential to accomplish the reaction. Control reactions and DFT calculations indicate that the coordination of copper, as a Lewis acid, with nitrogen atoms of heteroaryl iodides mediates the insertion of arynes into heteroaryl carbon-iodine bonds.
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Affiliation(s)
- Wen-Xuan Cao
- School of Pharmacy, Third Military Medical University, Gao Tanyan Avenue, Chongqing, 400038, China
| | - Lei Zhu
- School of Pharmacy, Third Military Medical University, Gao Tanyan Avenue, Chongqing, 400038, China
| | - Yiyi He
- School of Pharmacy, Third Military Medical University, Gao Tanyan Avenue, Chongqing, 400038, China
| | - Run Wang
- School of Pharmacy, Third Military Medical University, Gao Tanyan Avenue, Chongqing, 400038, China
| | - Ming Liu
- School of Pharmacy, Third Military Medical University, Gao Tanyan Avenue, Chongqing, 400038, China
| | - Qin Ouyang
- School of Pharmacy, Third Military Medical University, Gao Tanyan Avenue, Chongqing, 400038, China
| | - Qing Xiao
- School of Pharmacy, Third Military Medical University, Gao Tanyan Avenue, Chongqing, 400038, China
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2
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Tali JA, Kumar G, Sharma BK, Rasool Y, Sharma Y, Shankar R. Synthesis and site selective C-H functionalization of imidazo-[1,2- a]pyridines. Org Biomol Chem 2023; 21:7267-7289. [PMID: 37655687 DOI: 10.1039/d3ob00849e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Imidazo[1,2-a]pyridine has attracted much interest in drug development because of its potent medicinal properties, therefore the discovery of novel methods for its synthesis and functionalization continues to be an exciting area of research. Although transition metal catalysis has fuelled the most significant developments, extremely beneficial metal-free approaches have also been identified. Even though pertinent reviews focused on imidazo[1,2-a]pyridine synthesis, properties (physicochemical and medicinal), and functionalization at the C3 position have been published, none of these reviews has focused on the outcomes obtained in the field of global ring functionalization. We wish here to describe a brief synthesis and an overview of all the functionalization reactions at each carbon atom, viz, C2, C3, C5, C6, C7 and C8 of this scaffold, divided into sections based on site-selectivity and the type of functionalization methods used.
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Affiliation(s)
- Javeed Ahmad Tali
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Gulshan Kumar
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Bhupesh Kumar Sharma
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Younis Rasool
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Yashika Sharma
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
| | - Ravi Shankar
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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3
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Guo T, Bi L, Zhang M, Zhu CJ, Yuan LB, Zhao YH. Access to Sulfur-Containing Bisheterocycles through Base-Promoted Consecutive Tandem Cyclization/Sulfenylation with Elemental Sulfur. J Org Chem 2022; 87:16907-16912. [PMID: 36417664 DOI: 10.1021/acs.joc.2c02248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
A convenient and efficient tandem cyclization/sulfenylation of o-alkynyl-phenols/-anilines/enaminones for the synthesis of diverse sulfur-containing bisheterocycles has been developed using stable, odorless, and easy-to-handle elemental S8 as a building block under green chemistry conditions. Notably, a one-step simple base-mediated organic transformation affords a benzofuran (indole or chromone) ring and two C-S bonds. Attractive features of this methodology include the absence of a metal catalyst, mild conditions, good functional group tolerance, and valuable product structures.
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Affiliation(s)
- Tao Guo
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Lei Bi
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Miao Zhang
- Department of Pharmacy, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450001, P. R. China
| | - Cong-Jun Zhu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Li-Bo Yuan
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Yun-Hui Zhao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P. R. China
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4
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Zhong P, Wu J, Liu JB, Luo N. Atmosphere-controlled selective synthesis of ureas and thioureas from isothiocyanates. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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5
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Zhong P, Wu J, Wu J, Liu K, Wan C, Liu JB. Solvent-controlled selective synthesis of amides and thioureas from isothiocyanates. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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6
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Zhu YS, Shi L, Fu L, Chen X, Zhu X, Hao XQ, Song MP. Iodine-catalyzed amination of benzothiazoles with KSeCN in water to access primary 2-aminobenzothiazoles. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.08.070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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Recent advances in transition-metal-free C–H functionalization of imidazo[1,2-a]pyridines. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.03.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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8
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Reddy RJ, Shankar A, Kumar JJ, Sharadha N, Krishna GR. Diethyl phosphite-mediated switchable synthesis of bis(imidazoheterocycles) derived disulfanes and sulfanes using imidazoheterocycles and octasulfur. NEW J CHEM 2022. [DOI: 10.1039/d1nj05226h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A unique diethyl phosphite-mediated switchable synthesis of bis(imidazoheterocycle)-derived disulfanes and sulfanes using imidazoheterocycles with sulfur is reported. Moreover, imidazo[1,2-a]pyridine-indole derived thioethers were also realized.
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Affiliation(s)
- Raju Jannapu Reddy
- Department of Chemistry, University College of Science, Osmania University, Hyderabad 500 007, India
| | - Angothu Shankar
- Department of Chemistry, University College of Science, Osmania University, Hyderabad 500 007, India
| | - Jangam Jagadesh Kumar
- Department of Chemistry, University College of Science, Osmania University, Hyderabad 500 007, India
| | - Nunavath Sharadha
- Department of Chemistry, University College of Science, Osmania University, Hyderabad 500 007, India
| | - Gamidi Rama Krishna
- X-ray Crystallography, CSIR-National Chemical Laboratory, Pune 411 008, India
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9
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Shi T, Liu Y, Wang S, Lv Q, Yu B. Recyclable Carbon Nitride
Nanosheet‐Photocatalyzed
Aminomethylation of Imidazo[1,2‐
a
]pyridines in Green Solvent. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100444] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Tao Shi
- School of Biology, College of Chemistry Zhengzhou University Zhengzhou Henan 450001 China
- Institute of Chemistry Henan Academy of Sciences Zhengzhou Henan 450002 China
| | - Yu‐Ting Liu
- School of Biology, College of Chemistry Zhengzhou University Zhengzhou Henan 450001 China
| | - Shan‐Shan Wang
- Beijing Institute of Technology Analysis & Testing Center, Beijing Institute of Technology Beijing 100081 China
| | - Qi‐Yan Lv
- School of Biology, College of Chemistry Zhengzhou University Zhengzhou Henan 450001 China
| | - Bing Yu
- School of Biology, College of Chemistry Zhengzhou University Zhengzhou Henan 450001 China
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10
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Li T, Zhu X, Jiang H, Wang Y, Zheng N, Peng T, Gao R, Shi L, Hao X, Song M. Pd‐catalyzed decarboxylative [3 + 2] cycloaddition: Assembly of highly functionalized spirooxindoles bearing two quaternary centers. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6516] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Tiantian Li
- College of Chemistry ZhengZhou University Zhengzhou China
| | - Xinju Zhu
- College of Chemistry ZhengZhou University Zhengzhou China
| | - Hui Jiang
- College of Chemistry ZhengZhou University Zhengzhou China
| | - Yanong Wang
- College of Chemistry ZhengZhou University Zhengzhou China
| | - Nan Zheng
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics Peking University Shenzhen Graduate School Shenzhen China
| | - Tian Peng
- College of Chemistry ZhengZhou University Zhengzhou China
| | - Rui Gao
- College of Chemistry ZhengZhou University Zhengzhou China
| | - Linlin Shi
- College of Chemistry ZhengZhou University Zhengzhou China
| | - Xin‐Qi Hao
- College of Chemistry ZhengZhou University Zhengzhou China
| | - Mao‐Ping Song
- College of Chemistry ZhengZhou University Zhengzhou China
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11
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Tali JA, Kumar G, Singh D, Shankar R. Palladium(II) catalyzed site-selective C-H olefination of imidazo[1,2- a]pyridines. Org Biomol Chem 2021; 19:9401-9406. [PMID: 34705920 DOI: 10.1039/d1ob01683k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Herein, we disclose an efficient Pd(II)-catalyzed site selective C8 alkenylation of imidazo[1,2-a]pyridines with electronically biased olefinic substrates. Notably, besides the presence of four C-H sites available, selective mono-alkenylation was achieved by N-chelation overriding O-chelation. The versatility and scalability of the catalysis enabled the selective late-stage functionalization of a marketed drug, zolimidine. Various substituted heteroaryl alkenes can be afforded with moderate to good yields with high C8 regioselectivity.
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Affiliation(s)
- Javeed Ahmad Tali
- Natural Product and Medicinal Chemistry (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Gulshan Kumar
- Natural Product and Medicinal Chemistry (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Davinder Singh
- Natural Product and Medicinal Chemistry (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Ravi Shankar
- Natural Product and Medicinal Chemistry (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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12
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Ghosh D, Ghosh S, Hajra A. Electrochemical Functionalization of Imidazopyridine and Indazole: An Overview. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100981] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Debashis Ghosh
- Department of Chemistry St. Joseph's College (Autonomous) Bangalore 560027 Karnataka India
| | - Sumit 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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13
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Jiang H, Shen H, Zhu S, Wang B, Yang Y, Nong Z, Yi M, Tang S, Gui QW. Diethylaminosulfur Trifluoride: A Novel, Low-Cost, Stable Double Thiolation Reagent for Imidazo[1,2-α]pyridines. ACS OMEGA 2021; 6:26273-26281. [PMID: 34660986 PMCID: PMC8515576 DOI: 10.1021/acsomega.1c03291] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/05/2021] [Indexed: 05/08/2023]
Abstract
We report a novel, inexpensive double thiolation reagent that sulfurizes a broad range of imidazo[1,2-α]pyridines under mild conditions. Importantly, diethylaminosulfur trifluoride, as a common nucleophilic fluorinating reagent, was utilized as a novel thiolation reagent.
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Affiliation(s)
- Hongmei Jiang
- College
of Chemistry and Materials Science, Hunan
Agricultural University, Changsha 410128, People’s Republic
of China
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
| | - Haicheng Shen
- College
of Chemistry and Materials Science, Hunan
Agricultural University, Changsha 410128, People’s Republic
of China
| | - Sha Zhu
- College
of Chemistry and Materials Science, Hunan
Agricultural University, Changsha 410128, People’s Republic
of China
| | - Binbin Wang
- College
of Chemistry and Materials Science, Hunan
Agricultural University, Changsha 410128, People’s Republic
of China
| | - Yujie Yang
- College
of Chemistry and Materials Science, Hunan
Agricultural University, Changsha 410128, People’s Republic
of China
| | - Zhibin Nong
- College
of Chemistry and Materials Science, Hunan
Agricultural University, Changsha 410128, People’s Republic
of China
| | - Min Yi
- College
of Chemistry and Materials Science, Hunan
Agricultural University, Changsha 410128, People’s Republic
of China
| | - Shiyun Tang
- College
of Chemistry and Materials Science, Hunan
Agricultural University, Changsha 410128, People’s Republic
of China
- China
Yunnan Key Laboratory of Tobacco Chemistry, Research and Development
Center, China Tobacco Yunnan Industrial
Company, Kunming 650231, People’s Republic of China
| | - Qing-Wen Gui
- College
of Chemistry and Materials Science, Hunan
Agricultural University, Changsha 410128, People’s Republic
of China
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
- ,
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14
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Xue Y, Shi L, Wang X, Yu X, Zhu X, Hao XQ, Song MP. Regioselective N-F and α C(sp 3)-H Arylation of Aliphatic N-Fluorosulfonamides with Imidazopyridines. Org Lett 2021; 23:6807-6812. [PMID: 34406015 DOI: 10.1021/acs.orglett.1c02381] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A regioselective arylation of aliphatic N-fluorosulfonamides with imidazopyridines enabled by breaking of N-F and α C(sp3)-H bond to form C-N and C-C bonds was described. With CuCl as the catalyst, a radical mechanism was proposed to produce N-arylated aliphatic sulfonamides via a N radical intermediate. Importantly, under acidic conditions, an in situ generated imine was the possible intermediate, which was trapped by imidazopyridines to form α C(sp3)-H arylated aliphatic sulfonamides. The current protocol featured a broad substrate scope, tunable reaction conditions, operational convenience, and good regioselectivity.
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Affiliation(s)
- Yuting Xue
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
| | - Linlin Shi
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
| | - Xu Wang
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
| | - Xiaoni Yu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
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15
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Tiekink ER. Supramolecular aggregation patterns featuring Se⋯N secondary-bonding interactions in mono-nuclear selenium compounds: A comparison with their congeners. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214031] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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16
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Ma ST, Zhu XX, Xu JY, Li Y, Zhang XM, Feng CT, Yan Y. Iodide-promoted transformations of imidazopyridines into sulfur-bridged imidazopyridines or 1,2,4-thiadiazoles. Chem Commun (Camb) 2021; 57:5338-5341. [PMID: 33928973 DOI: 10.1039/d1cc01044a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A NaI-promoted sequential double carbon-sulfur bond formation was developed to afford sulfur-bridged imidazopyridines, using Deoxofluor as the sulfur source and requiring only 15 min at room temperature. Using this process, imidazo[1,5-a]pyridines could also be transformed to 1,2,4-thiadiazoles in the presence of ammonium salt with the formation of both carbon-sulfur and nitrogen-sulfur bonds. This mechanistically unique method is distinguished by its wide substrate scope, lack of requirement for transition metals and mild conditions.
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Affiliation(s)
- Shi-Tang Ma
- Life and Health College, Anhui Science and Technology University, Fengyang, 233100, China and School of Chemical Engineering, Anhui University of Science and Technology, Huainan, 232001, China.
| | - Xiao-Xiao Zhu
- School of Chemical Engineering, Anhui University of Science and Technology, Huainan, 232001, China.
| | - Jing-Yu Xu
- School of Chemical Engineering, Anhui University of Science and Technology, Huainan, 232001, China.
| | - Ying Li
- School of Chemical Engineering, Anhui University of Science and Technology, Huainan, 232001, China.
| | - Xiao-Mei Zhang
- School of Chemical Engineering, Anhui University of Science and Technology, Huainan, 232001, China.
| | - Cheng-Tao Feng
- School of Chemical Engineering, Anhui University of Science and Technology, Huainan, 232001, China.
| | - Yizhe Yan
- College of Food and Bioengineering, Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou University of Light Industry, Zhengzhou, 450000, China.
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17
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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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18
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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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19
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Ma CH, Chen M, Feng ZW, Zhang Y, Wang J, Jiang YQ, Yu B. Functionalization of imidazo[1,2-a]pyridines via radical reactions. NEW J CHEM 2021. [DOI: 10.1039/d1nj00704a] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The recent advances in radical reactions for the direct functionalization of imidazo[1,2-a]pyridines are reviewed.
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Affiliation(s)
- Chun-Hua Ma
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Ming Chen
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Zhi-Wen Feng
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Yan Zhang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Jin Wang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Yu-Qin Jiang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Bing Yu
- Green Catalysis Centre
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
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20
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Liu S, Jiang H, Liu W, Zhu X, Hao XQ, Song MP. Ruthenium-Catalyzed C(sp 2)-H Bond Bisallylation with Imidazopyridines as Directing Groups. J Org Chem 2020; 85:15167-15182. [PMID: 33140953 DOI: 10.1021/acs.joc.0c02029] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A Ru(II)-catalyzed bisallylation of imidazopyridines with vinylcyclopropanes or vinyl cyclic carbonate has been successfully realized. Notably, pharmacophore imidazopyridine was utilized as an intrinsic directing group, which gave access to value-added bisallylated products in high yields via double tandem C-H and C-C/C-O activation. The current methodology was featured with broad substrate scope, good functional group compatibility, and operational simplicity.
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Affiliation(s)
- Shuang Liu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Hui Jiang
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Wannian Liu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
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21
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Vuillermet F, Bourret J, Pelletier G. Synthesis of Imidazo[1,2-a]pyridines: Triflic Anhydride-Mediated Annulation of 2H-Azirines with 2-Chloropyridines. J Org Chem 2020; 86:388-402. [DOI: 10.1021/acs.joc.0c02148] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Frédéric Vuillermet
- Department of Chemical Sciences, Paraza Pharma Inc., 2525 avenue Marie-Curie, Saint-Laurent, Québec H4S 2E1, Canada
| | - Joanick Bourret
- Department of Chemical Sciences, Paraza Pharma Inc., 2525 avenue Marie-Curie, Saint-Laurent, Québec H4S 2E1, Canada
| | - Guillaume Pelletier
- Department of Chemical Sciences, Paraza Pharma Inc., 2525 avenue Marie-Curie, Saint-Laurent, Québec H4S 2E1, Canada
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22
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Gao F, Sun K, Chen XL, Shi T, Li XY, Qu LB, Zhao YF, Yu B. Visible-Light-Induced Phosphorylation of Imidazo-Fused Heterocycles under Metal-Free Conditions. J Org Chem 2020; 85:14744-14752. [PMID: 33136392 DOI: 10.1021/acs.joc.0c02107] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A metal-free and base-free procedure for the phosphorylation of imidazo[1,2-a]pyridines with phosphine oxides under the irradiation of visible light at room temperature in green solvent was reported, featuring mild and sustainable conditions, convenient operation, as well as good functional group compatibility.
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Affiliation(s)
- Fan Gao
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Kai Sun
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Xiao-Lan Chen
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Tao Shi
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Xiao-Yun Li
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Ling-Bo Qu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Yu-Fen Zhao
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China.,Institute Drug Discovery Technology, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Bing Yu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
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23
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Rh(III)-catalyzed C–H acylmethylation of 2H-indazoles with sulfoxonium ylides. JOURNAL OF SAUDI CHEMICAL SOCIETY 2020. [DOI: 10.1016/j.jscs.2020.09.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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Kulkarni MR, Lad NP, Patil SM, Gaikwad ND. Thionyl chloride‐mediated synthesis of 2‐azaindolizine sulfur‐bridged dimers by CH bond direct chalcogenation of imidazo[1,5‐
a
]pyridines. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.201900516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mahesh R. Kulkarni
- Department of Chemistry Organic Chemistry Research Centre, K.R.T. Arts, B.H. Commerce and A.M. Science College Nashik India
- Department of Medicinal Chemistry Piramal Enterprises Ltd. Mumbai India
| | - Nitin P. Lad
- Department of Chemistry Organic Chemistry Research Centre, K.R.T. Arts, B.H. Commerce and A.M. Science College Nashik India
- Department of Medicinal Chemistry Piramal Enterprises Ltd. Mumbai India
| | | | - Nitin D. Gaikwad
- Department of Chemistry Organic Chemistry Research Centre, K.R.T. Arts, B.H. Commerce and A.M. Science College Nashik India
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25
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Li J, Shi L, Zhang SP, Wang XY, Zhu X, Hao XQ, Song MP. Rh(III)-Catalyzed C-H Cyanation of 2 H-Indazole with N-Cyano- N-phenyl- p-toluenesulfonamide. J Org Chem 2020; 85:10835-10845. [PMID: 32692175 DOI: 10.1021/acs.joc.0c01386] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A Rh(III)-catalyzed direct cyanation of 2H-indazoles with N-cyano-N-phenyl-p-toluenesulfonamide has been realized via a chelation-assisted strategy. The methodology enables regioselective access to various ortho-cyanated phenylindazoles in good yields with a broad substrate scope and good functional group compatibility. The obtained cyanated indazoles could further be converted into other value-added chemicals. Importantly, the current protocol is featured with several characteristics, including a novel cyanating agent, good regioselectivity, and operational convenience.
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Affiliation(s)
- Jing Li
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Linlin Shi
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Shu-Ping Zhang
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xu-Yan Wang
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
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26
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Zhu YS, Xue Y, Liu W, Zhu X, Hao XQ, Song MP. Temperature-Controlled Chalcogenation and Chalcogenocyanation of Imidazopyridines in Water under Transition Metal-Free Conditions. J Org Chem 2020; 85:9106-9116. [DOI: 10.1021/acs.joc.0c01035] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Yu-Shen Zhu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Yuting Xue
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Wannian Liu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
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27
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Park JW, Kim YH, Kim DY. Electrochemical oxidative iodination of imidazo[1,2-a]pyridines using NaI as iodine source. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1717539] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jin Wha Park
- Department of Chemistry, Soonchunhyang University, Asan, Republic of Korea
| | - Yong Hwan Kim
- Department of Chemistry, Soonchunhyang University, Asan, Republic of Korea
| | - Dae Young Kim
- Department of Chemistry, Soonchunhyang University, Asan, Republic of Korea
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28
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Shi T, Sun K, Chen X, Zhang Z, Huang X, Peng Y, Qu L, Yu B. Recyclable Perovskite as Heterogeneous Photocatalyst for Aminomethylation of Imidazo‐Fused Heterocycles. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901324] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Tao Shi
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Kai Sun
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Xiao‐Lan Chen
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Zhao‐Xin Zhang
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Xian‐Qiang Huang
- School of Chemistry & Chemical EngineeringLiaocheng University Liaocheng, Shandong 252059 People's Republic of China
| | - Yu‐Yu Peng
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and TransportationChangsha University of Science and Technology Changsha 410114 People's Republic of China
| | - Ling‐Bo Qu
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Bing Yu
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
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29
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Tashrifi Z, Mohammadi-Khanaposhtani M, Larijani B, Mahdavi M. C3-Functionalization of Imidazo[1,2-a
]pyridines. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901491] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zahra Tashrifi
- Endocrinology and Metabolism Research Center; Endocrinology and Metabolism Clinical Sciences Institute; Tehran University of Medical Sciences; Tehran I.R. Iran
| | | | - Bagher Larijani
- Endocrinology and Metabolism Research Center; Endocrinology and Metabolism Clinical Sciences Institute; Tehran University of Medical Sciences; Tehran I.R. Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center; Endocrinology and Metabolism Clinical Sciences Institute; Tehran University of Medical Sciences; Tehran I.R. Iran
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30
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Li B, Shen N, Yang Y, Zhang X, Fan X. Synthesis of naphtho[1′,2′:4,5]imidazo[1,2-a]pyridines via Rh(iii)-catalyzed C–H functionalization of 2-arylimidazo[1,2-a]pyridines with cyclic 2-diazo-1,3-diketones featuring with a ring opening and reannulation. Org Chem Front 2020. [DOI: 10.1039/d0qo00073f] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
An unprecedented synthesis of functionalized naphtho[1′,2′:4,5]imidazo[1,2-a]pyridines via rhodium-catalyzed cascade reactions of 2-arylimidazo[1,2-a]pyridine-3-carbaldehydes with cyclic α-diazo-1,3-diketones is presented.
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Affiliation(s)
- Bin Li
- School of Environment
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Nana Shen
- School of Environment
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Yujie Yang
- School of Environment
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Xinying Zhang
- School of Environment
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Xuesen Fan
- School of Environment
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
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31
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Wang Q, Shi L, Liu S, Zhi C, Fu LR, Zhu X, Hao XQ, Song MP. Solvent-free and room temperature microwave-assisted direct C7 allylation of indolines via sequential C–H and C–C activation. RSC Adv 2020; 10:10883-10887. [PMID: 35492909 PMCID: PMC9050424 DOI: 10.1039/d0ra02016h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 03/04/2020] [Indexed: 01/08/2023] Open
Abstract
A Ru or Rh-catalyzed efficient and atom-economic C7 allylation of indolines with vinylcyclopropanes was developed via sequential C–H and C–C activation. A wide range of substrates were well tolerated to afford the corresponding allylated indolines in high yields and E/Z selectivities under microwave irradiation. The obtained allylated indolines could further undergo transformations to afford various value-added chemicals. Importantly, this reaction proceeded at room temperature under solvent-free conditions. A Ru or Rh-catalyzed direct C7 allylation of indolines with vinylcyclopropanes via sequential C–H/C–C activation under microwave irradiation has been disclosed.![]()
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Affiliation(s)
- Qiuling Wang
- College of Chemistry
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Linlin Shi
- College of Chemistry
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Shuang Liu
- College of Chemistry
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Changlei Zhi
- College of Chemistry
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Lian-Rong Fu
- College of Chemistry
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Xinju Zhu
- College of Chemistry
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Xin-Qi Hao
- College of Chemistry
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Mao-Ping Song
- College of Chemistry
- Zhengzhou University
- Zhengzhou
- P. R. China
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32
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Zhi C, Wang Q, Liu S, Xue Y, Shi L, Zhu X, Hao XQ, Song MP. Cu-Catalyzed Direct C7 Sulfonylation of Indolines with Arylsulfonyl Chlorides. J Org Chem 2019; 85:1022-1032. [DOI: 10.1021/acs.joc.9b02954] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Changlei Zhi
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Qiuling Wang
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Shuang Liu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Yuting Xue
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Linlin Shi
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
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33
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Mi X, Kong Y, Zhang J, Pi C, Cui X. Visible-light-promoted sulfonylmethylation of imidazopyridines. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.09.040] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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34
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Sandeep M, Muzaffar-ur-Rehman MD, Pradeep Kumar G, Sridhar B, Reddy KR. One-Pot Synthesis of 3-Sulfenyl/Selenylimidazo[1,5- a
]quinolines from 2-Methylquinolines, Aliphatic Amines/Amino Acids, and Dichalcogenides. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Mummadi Sandeep
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 110025 New Delhi India
| | - MD. Muzaffar-ur-Rehman
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad India
| | - Geetala Pradeep Kumar
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad India
- CSIR-IICT; IICT-RMIT Joint Research Centre; 500007 Hyderabad India
| | - Balasubramanian Sridhar
- X-ray Crystallography Division; CSIR-Indian Institute of Chemical Technology; 500007 Hyderabad India
| | - Kallu Rajender Reddy
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 110025 New Delhi India
- CSIR-IICT; IICT-RMIT Joint Research Centre; 500007 Hyderabad India
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