1
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Nishiyama K, Aihara Y, Suzuki T, Takahashi K, Kinoshita T, Dohmae N, Sato A, Hagihara S. Discovery of a Plant 14-3-3 Inhibitor Possessing Isoform Selectivity and In Planta Activity. Angew Chem Int Ed Engl 2024; 63:e202400218. [PMID: 38658314 DOI: 10.1002/anie.202400218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 04/26/2024]
Abstract
Synthetic modulators of plant 14-3-3s are promising chemical tools both for understanding the 14-3-3-related signaling pathways and controlling plant physiology. Herein, we describe a novel small-molecule inhibitor for 14-3-3 proteins of Arabidopsis thaliana. The inhibitor was identified from unexpected products in a stock solution in dimethyl sulfoxide (DMSO) of an in-house chemical library. Mass spectroscopy, mutant-based analyses, fluorescence polarization assays, and thermal shift assays revealed that the inhibitor covalently binds to an allosteric site of 14-3-3 with isoform selectivity. Moreover, infiltration of the inhibitor to Arabidopsis leaves suppressed the stomatal aperture. The inhibitor should provide new insight into the design of potent and isoform-selective 14-3-3 modulators.
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Affiliation(s)
- Kotaro Nishiyama
- Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako City, Saitama, 351-0198, Japan
| | - Yusuke Aihara
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University Chikusa, Nagoya, 464-8602, Japan
- PRESTO, Japan Science and Technology Agency (JST), Honcho 4-1-8, Kawaguchi, Saitama, 332-0012, Japan
| | - Takehiro Suzuki
- Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako City, Saitama, 351-0198, Japan
| | - Koji Takahashi
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University Chikusa, Nagoya, 464-8602, Japan
- Graduate School of Science, Nagoya University Chikusa, Nagoya, 464-8602, Japan
| | - Toshinori Kinoshita
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University Chikusa, Nagoya, 464-8602, Japan
- Graduate School of Science, Nagoya University Chikusa, Nagoya, 464-8602, Japan
| | - Naoshi Dohmae
- Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako City, Saitama, 351-0198, Japan
| | - Ayato Sato
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University Chikusa, Nagoya, 464-8602, Japan
| | - Shinya Hagihara
- Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako City, Saitama, 351-0198, Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University Chikusa, Nagoya, 464-8602, Japan
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2
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Dalai PG, Swain S, Panda N. DMSO-DCE Triggered Chemodivergent C-Methylenation of Electron-Rich Arenes: An Easy Access to Diarylmethanes. J Org Chem 2024; 89:2599-2604. [PMID: 38293774 DOI: 10.1021/acs.joc.3c02612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
The chemodivergent property of dimethyl sulfoxide (DMSO) along with 1,2-dichloroethane (DCE) was exploited for the incorporation of a methylene group to form diarylmethanes through a dearomatization/rearomatization process. Methyl(methylene)sulfonium ions (CH2=S+-Me) were generated by simple heating of commonly used solvents such as DMSO and DCE. These ions were subsequently trapped by electron-rich arenes and heteroarenes, resulting in the synthesis of both symmetrical and unsymmetrical diarylmethanes. This protocol was further extended to access N-methylenamides by reacting 2-naphthol with amides or nitriles in the presence of DMSO and DCE.
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Affiliation(s)
- Pallaba Ganjan Dalai
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha 769008, India
| | - Swayamprava Swain
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha 769008, India
| | - Niranjan Panda
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha 769008, 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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Moghaddam FM, Jarahiyan A, Pazoki PY. β-Ketoallylic methylsulfones synthesis via inert C(sp 3)-H bond activation by magnetic Ag-Cu MOF. Sci Rep 2023; 13:22518. [PMID: 38110516 PMCID: PMC10728156 DOI: 10.1038/s41598-023-49670-5] [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: 09/18/2023] [Accepted: 12/11/2023] [Indexed: 12/20/2023] Open
Abstract
Herein, the one-pot tandem synthesis of β-ketoallylic methylsulfones has been achieved from readily available dimethyl sulfoxide and acetophenones as coupling partners in one step. In this procedure, dimethyl sulfoxide serves as a triple role including solvent, dual synthon and as an oxidant agent. The use of magnetic Ag-Cu MOF as a bimetallic catalyst is the key to the progress of the reaction due to its accessible active sites. It provides facile access to various β-ketoallylic methylsulfone derivatives from direct C(sp3)-H bond activation and functionalization of aromatic methyl ketones especially acetophenones with electron-rich and electron-poor groups. Moreover, the present work offers a synthetically powerful strategy to form products in good to excellent yields (74-96%) with the atom, step, and pot economics. It has also delivered a new chromane-4-one derivative from 2-hydroxy acetophenone with intramolecular Michael-addition of related β-ketoallyl methylsulfone product. In the final step, the electronic properties of some products have been predicted with the theoretical studies.
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Affiliation(s)
- Firouz Matloubi Moghaddam
- Laboratory of Organic Synthesis and Natural Products, Department of Chemistry, Sharif University of Technology, Azadi Street, PO Box 111559516, Tehran, Iran.
| | - Atefeh Jarahiyan
- Laboratory of Organic Synthesis and Natural Products, Department of Chemistry, Sharif University of Technology, Azadi Street, PO Box 111559516, Tehran, Iran
| | - Parisa Yaqubnezhad Pazoki
- Laboratory of Organic Synthesis and Natural Products, Department of Chemistry, Sharif University of Technology, Azadi Street, PO Box 111559516, Tehran, Iran
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5
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Guo T, Hu P, Liu Y, Zhang P, Zhao Y, Zhu C. Ketosulfonylmethylenation and sulfonylethyleneation of imidazoheterocycles with dimethylformamide as a methylene source. Chem Commun (Camb) 2023; 59:12455-12458. [PMID: 37781868 DOI: 10.1039/d3cc03850e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
A hitherto unreported ketosulfonylmethylenation occurring at the C-3 position of imidazoheterocycles, with dimethylformamide as the methylene source was described. Using CoCl2·6H2O or Fe(acac)3 as efficient and inexpensive catalysts, some important biologically active methylenated compounds were prepared, with high efficacy, favorable functional group compatibilities, and a broad substrate scope.
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Affiliation(s)
- Tao Guo
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Penghua Hu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Yu Liu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Panke Zhang
- Green Catalysis Center, College of Chemistry, Henan Advanced Institute of Technology, Zhengzhou University, Zhengzhou 450001, PR China
| | - Yunhui Zhao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P. R. China
| | - Congjun Zhu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
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6
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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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7
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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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8
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Kumar S, Padala K, Maiti B. H 2O 2-Mediated Synthesis of a Quinazolin-4(3 H)-one Scaffold: A Sustainable Approach. ACS OMEGA 2023; 8:33058-33068. [PMID: 37720769 PMCID: PMC10500651 DOI: 10.1021/acsomega.3c05162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 08/09/2023] [Indexed: 09/19/2023]
Abstract
A quinazolin-4(3H)-one ring system is a privileged heterocyclic moiety with distinctive biological properties. From this perspective, the development of an efficient strategy for the synthesis of quinazolin-4(3H)-one has always been in demand for the synthetic chemistry community. In this report, we envisaged an efficient protocol for the synthesis of quinazolin-4(3H)-one using substituted 2-amino benzamide with dimethyl sulfoxide (DMSO) as a carbon source and H2O2 as an effective oxidant. Mechanistically, the reaction proceeds through the radical approach with DMSO as one carbon source. To further substantiate the synthetic claim, the synthetic protocol has been extended to the synthesis of the anti-endotoxic active compound 3-(2-carboxyphenyl)-4-(3H)-quinazolinone.
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Affiliation(s)
- Sumit Kumar
- Department
of Chemistry, School of Advanced Science, Vellore Institute of Technology, Katpadi, Vellore, Tamil Nadu 632014, India
| | - Kishor Padala
- Department
of Chemistry, Central Tribal University
of Andhra Pradesh, Kondakarakam
Village, Cantonment area, Vizianagaram, Andhra Pradesh 535003, India
| | - Barnali Maiti
- Department
of Chemistry, School of Advanced Science, Vellore Institute of Technology, Katpadi, Vellore, Tamil Nadu 632014, India
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9
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Recent Advances in the Use of Dimethyl Sulfoxide as a Synthon in Organic Chemistry. Top Curr Chem (Cham) 2022; 380:55. [DOI: 10.1007/s41061-022-00411-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 10/06/2022] [Indexed: 11/27/2022]
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10
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Li WZ, Zhang W, Chen XH, Wang ZD, Cui HL. Modification of Pyrrolo[2,1- a]isoquinolines and Polysubstituted Pyrroles via Methylenation with Acetyl Chloride and Dimethylsulfoxide. J Org Chem 2022; 87:11491-11502. [PMID: 35951357 DOI: 10.1021/acs.joc.2c01090] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A convenient synthesis of methylene-bridged pyrrolo[2,1-a]isoquinolines has been developed. Treatment of pyrroloisoquinolines with acetyl chloride and dimethylsulfoxide (DMSO) at ambient temperature afforded bispyrroloisoquinolylmethanes in 17-85% yields. This reaction system can also be expanded to the synthesis of bispyrrolylmethanes (34-94% yields). Easy chemical transformation of methylene-bridged pyrroloisoquinoline provided an unsymmetric acid and amide possessing a privileged framework.
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Affiliation(s)
- Wan-Zhen Li
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan District, Chongqing 402160, P. R. China
| | - Wei Zhang
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan District, Chongqing 402160, P. R. China
| | - Xiao-Hui Chen
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan District, Chongqing 402160, P. R. China
| | - Zhao-Dong Wang
- College of Chemistry and Environmental Engineering, Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, Chongqing University of Arts and Sciences, Chongqing 402160, P. R. China
| | - Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan District, Chongqing 402160, P. R. China
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11
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Vodnala N, Singh S, Hazra CK. Lewis Acid-Promoted Typical Friedel-Crafts Reactions Using DMSO as a Carbon Source. J Org Chem 2022; 87:10044-10053. [PMID: 35857352 DOI: 10.1021/acs.joc.2c01037] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
This study reports a mild and efficient synthetic protocol for the synthesis of symmetrical and unsymmetrical diarylmethanes (DAMs). Using DMSO as the C1 source and TMSOTf as the Lewis acid promoter, a series of functionalized symmetrical and unsymmetrical DAMs were synthesized in high yields. Gratifyingly, DMSO plays a dual role as a solvent and a C1 source and can also be replaced with its deuterated counterpart, DMSO-d6, enabling the incorporation of the -CD2 moiety into the diarylmethane skeleton. The developed approach has been applied to a wide range of substrates having various functional groups, and this protocol has also been extended to the synthesis of an anti-breast cancer agent and an anticoagulant agent using common feedstock compounds. In addition, the postulated mechanism has been explicitly demonstrated via control experiments.
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Affiliation(s)
- Nagaraju Vodnala
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Sanjay Singh
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Chinmoy Kumar Hazra
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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12
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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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13
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Dai P, Li Y, Chen Y, Jiao J, Wang Q, Li C, Gu Y, Zhang Y, Xia Q, Zhang WH. (Fluoromethylsulfonyl)methylation of Quinoxalinones Using NaSO2CH2F for C–F Bond Cleavage. Org Lett 2022; 24:1357-1361. [DOI: 10.1021/acs.orglett.2c00048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peng Dai
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yufei Li
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yu Chen
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Jian Jiao
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Qingqing Wang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Chenxiao Li
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yucheng Gu
- Syngenta Jealott’s Hill International Research Centre, Bracknell RG42 6EY, U.K
| | - Yanbin Zhang
- Department of Chemistry, National University of Singapore, 117545 Singapore
| | - Qing Xia
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei-Hua Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
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14
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Hydroxymethylation of Active Methenyl Compounds: DMSO as Methylene Source and H2O as Oxygen Source. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153663] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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15
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Yang T, Li H, Nie Z, Su MD, Luo WP, Liu Q, Guo CC. [3+1+1+1] Annulation to the Pyridine Structure in Quinoline Molecules Based on DMSO as a Nonadjacent Dual-Methine Synthon: Simple Synthesis of 3-Arylquinolines from Arylaldehydes, Arylamines, and DMSO. J Org Chem 2022; 87:2797-2808. [DOI: 10.1021/acs.joc.1c02708] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Tonglin Yang
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Hui Li
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Zhiwen Nie
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Miao-dong Su
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Wei-ping Luo
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Qiang Liu
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Can-Cheng Guo
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
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16
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Lind NM, Joe NS, Newell BS, Morris AM. High Yielding, One-Pot Synthesis of Bis(1H-indazol-1-yl)methane Catalyzed by 3d-Metal Salts. REACTIONS 2022; 3:59-69. [PMID: 35072056 PMCID: PMC8779710 DOI: 10.3390/reactions3010005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Synthetic access to poly(indazolyl)methanes has limited their study despite their structural similarity to the highly investigated chelating poly(pyrazolyl)methanes and their potentially important indazole moiety. Herein is presented a high yielding, one-pot synthesis for the 3d-metal catalyzed formation of bis(1H-indazol-1-yl)methane from 1H-indazole utilizing dimethylsulfoxide as the methylene source. Complete characterization of bis(1H-indazol-1-yl)methane is given with 1H and 13C NMR, UV/Vis, FTIR, high resolution mass spectrometry and for the first time, single crystal X-ray diffraction. This simple, inexpensive pathway to yield exclusively bis(1H-indazol-1-yl)methane provides synthetic access to further investigate the coordination and potential applications of the family of bis(indazolyl)methanes.
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Affiliation(s)
- Natalie M. Lind
- Department of Chemistry and Biochemistry, Fort Lewis College, 1000 Rim Dr., Durango, CO 81301, USA
| | - Natalie S. Joe
- Department of Chemistry and Biochemistry, Fort Lewis College, 1000 Rim Dr., Durango, CO 81301, USA
| | - Brian S. Newell
- Materials and Molecular Analysis Center, Analytical Resource Core, Colorado State University, 200 W. Lake St., Fort Collins, CO 80523, USA
| | - Aimee M. Morris
- Department of Chemistry and Biochemistry, Fort Lewis College, 1000 Rim Dr., Durango, CO 81301, USA
- Correspondence:
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17
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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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18
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19
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Liu H, He GC, Zhao CY, Zhang XX, Ji DW, Hu YC, Chen QA. Redox-Divergent Construction of (Dihydro)thiophenes with DMSO. Angew Chem Int Ed Engl 2021; 60:24284-24291. [PMID: 34460141 DOI: 10.1002/anie.202109026] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Indexed: 11/10/2022]
Abstract
Thiophene-based rings are one of the most widely used building blocks for the synthesis of sulfur-containing molecules. Inspired by the redox diversity of these features in nature, we demonstrate herein a redox-divergent construction of dihydrothiophenes, thiophenes, and bromothiophenes from the respective readily available allylic alcohols, dimethyl sulfoxide (DMSO), and HBr. The redox-divergent selectivity could be manipulated mainly by controlling the dosage of DMSO and HBr. Mechanistic studies suggest that DMSO simultaneously acts as an oxidant and a sulfur donor. The synthetic potentials of the products as platform molecules were also demonstrated by various derivatizations, including the preparation of bioactive and functional molecules.
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Affiliation(s)
- Heng Liu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Gu-Cheng He
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chao-Yang Zhao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiang-Xin Zhang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ding-Wei Ji
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Yan-Cheng Hu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Qing-An Chen
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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20
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Redox‐Divergent Construction of (Dihydro)thiophenes with DMSO. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109026] [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]
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21
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Franco MS, Saba S, Rafique J, Braga AL. KIO
4
‐mediated Selective Hydroxymethylation/Methylenation of Imidazo‐Heteroarenes: A Greener Approach. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Marcelo Straesser Franco
- Departamento de Química Universidade Federal de Santa Catarina—UFSC Florianópolis 88040-900 SC-Brazil
| | - Sumbal Saba
- Instituto de Química Universidade Federal de Goiás—UFG Goiânia 74690-900 GO-Brazil
| | - Jamal Rafique
- Instituto de Química, Universidade Federal do Mato Grosso do Sul—UFMS Campo Grande 79074-460 MS-Brazil
| | - Antonio Luiz Braga
- Departamento de Química Universidade Federal de Santa Catarina—UFSC Florianópolis 88040-900 SC-Brazil
- Department of Chemical Sciences Faculty of Science University of Johannesburg Doornfontein 2028 South Africa
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22
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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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23
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Franco MS, Saba S, Rafique J, Braga AL. KIO 4 -mediated Selective Hydroxymethylation/Methylenation of Imidazo-Heteroarenes: A Greener Approach. Angew Chem Int Ed Engl 2021; 60:18454-18460. [PMID: 34097781 DOI: 10.1002/anie.202104503] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/14/2021] [Indexed: 02/06/2023]
Abstract
Herein, we report a KIO4 -mediated, sustainable and chemoselective approach for the one-pot C(sp2 )-H bond hydroxymethylation or methylenation of imidazo-heteroarenes with formaldehyde, generated in situ via the oxidative cleavage of ethylene glycol or glycerol (renewable reagents) through the Malaprade reaction. In the presence of ethylene glycol, a series of 3-hydroxymethyl-imidazo-heteroarenes was obtained in good to excellent yields. These compounds are important intermediates to access pharmaceutical drugs, e.g., Zolpidem. Furthermore, by using glycerol, bis(imidazo[1,2-a]pyridin-3-yl)methane derivatives were selectively obtained in good to excellent yields.
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Affiliation(s)
- Marcelo Straesser Franco
- Departamento de Química, Universidade Federal de Santa Catarina-UFSC, Florianópolis, 88040-900, SC-Brazil
| | - Sumbal Saba
- Instituto de Química, Universidade Federal de Goiás-UFG, Goiânia, 74690-900, GO-Brazil
| | - Jamal Rafique
- Instituto de Química, Universidade, Federal do Mato Grosso do Sul-UFMS, Campo Grande, 79074-460, MS-Brazil
| | - Antonio Luiz Braga
- Departamento de Química, Universidade Federal de Santa Catarina-UFSC, Florianópolis, 88040-900, SC-Brazil.,Department of Chemical Sciences, Faculty of Science, University of Johannesburg, Doornfontein, 2028, South Africa
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24
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Zhang Y, Kuang J, Xiao X, Wang L, Ma Y. DMSO as a Dual Carbon Synthon and Water as Oxygen Donor for the Construction of 1,3,5-Oxadiazines from Amidines. Org Lett 2021; 23:3960-3964. [PMID: 33938756 DOI: 10.1021/acs.orglett.1c01116] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A selective and efficient synthesis of diaryl 1,3,5-oxadiazines was established for the first time from simple and readily available amidines in wet DMSO. DMSO was employed as a dual carbon synthon and water offered the oxygen atom to construct the oxadiazine ring. The reaction involved two new C-N and two new C-O bond formations.
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Affiliation(s)
- Yi Zhang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P.R. China.,College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, P.R. China
| | - Jinqiang Kuang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P.R. China
| | - Xuqiong Xiao
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, no. 2318 Yuhangtang Road, Hangzhou311121, P.R. China
| | - Lei Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P.R. China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P.R. China.,College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, P.R. China
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25
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Yao H, Zhong X, Wang B, Lin S, Liu L, Yan Z. Manganese-catalyzed dehydrogenative Csp 3-Csp 2 coupling of imidazo[1,2- a]pyridines with methyl ketones. Org Biomol Chem 2021; 19:3479-3483. [PMID: 33899882 DOI: 10.1039/d1ob00169h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A Mn(ii)-catalyzed efficient C-H alkylation of imidazoheterocycles with methyl ketones has been developed via dehydrogenative C(sp3)-C(sp2) coupling which can serve as a novel approach toward hydrocarboxylated imidazolopyridines. The merit of this strategy is illustrated by excellent functional group tolerance and the use of cheap and readily available starting materials.
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Affiliation(s)
- Hua Yao
- College of Chemistry, Nanchang University, No. 999, Xuefu Rd., Nanchang, 330031, P. R. China.
| | - Xiaoyang Zhong
- College of Chemistry, Nanchang University, No. 999, Xuefu Rd., Nanchang, 330031, P. R. China.
| | - Bingqing Wang
- College of Chemistry, Nanchang University, No. 999, Xuefu Rd., Nanchang, 330031, P. R. China.
| | - Sen Lin
- College of Chemistry, Nanchang University, No. 999, Xuefu Rd., Nanchang, 330031, P. R. China.
| | - Lichi Liu
- College of Chemistry, Nanchang University, No. 999, Xuefu Rd., Nanchang, 330031, P. R. China.
| | - Zhaohua Yan
- College of Chemistry, Nanchang University, No. 999, Xuefu Rd., Nanchang, 330031, P. R. China.
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26
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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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27
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Wang H, Xi Z, Huang S, Ding R, Gao Y, Liu Y, Sun B, Tian H, Liang S. Convenient Preparation of N-Acylbenzoxazines from Phenols, Nitriles, and DMSO Initiated by a Catalytic Amount of (COCl) 2. J Org Chem 2021; 86:4932-4943. [PMID: 33730490 DOI: 10.1021/acs.joc.0c02768] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A convenient preparation method of N-acylbenzoxazines has been developed, in which phenols react with nitriles and dimethyl sulfoxide (DMSO) in the presence of a catalytic amount of (COCl)2 in CH3CN or chloroform to afford the corresponding N-acylbenzoxazines in moderate-to-good yields. DMSO acts as a source of HCHO, which is generated in situ from the decomposition of a methoxydimethylsulfonium salt. A regeneration cycle of the methoxydimethylsulfonium salt is proposed, which is initiated by a catalytic amount of (COCl)2.
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Affiliation(s)
- Hao Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Zeyu Xi
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Shuai Huang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Rui Ding
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Yang Gao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Yongguo Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Baoguo Sun
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Hongyu Tian
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Sen Liang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
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28
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Baruah B, Deb ML. Catalyst-free and additive-free reactions enabling C-C bond formation: a journey towards a sustainable future. Org Biomol Chem 2021; 19:1191-1229. [PMID: 33480947 DOI: 10.1039/d0ob02149k] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review focuses on the catalyst- and additive-free C-C bond forming reactions reported mostly from the year 2005 to date. C-C bond forming reactions are highly important as large and complex organic molecules can be derived from simpler ones via these reactions. On the other hand, catalyst- and additive-free reactions are economical, environmentally friendly and less sensitive to air/moisture, allow easy separation of products and are operationally simple. Hence, a large number of research articles have been published in this area. Though a few reviews are available on the catalyst-free organic reactions, most of them were published a few years ago. The current review excludes catalysts as well as additives and is specific to only C-C bond formation. Besides many organic name reactions, catalyst/additive-free C-H functionalizations, coupling reactions and UV-visible-light-promoted reactions are also discussed. Undoubtedly, the contents of this review will motivate readers to do more novel work in this area which will accelerate the journey towards a sustainable future.
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Affiliation(s)
- Biswajita Baruah
- Department of Chemistry, Pandu College, Guwahati-12, Assam, India
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29
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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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30
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Kumar R, Rawat D, Semwal R, Badhani G, Adimurthy S. Hypervalent iodine mediated synthesis of imidazo[1,2- a]pyridine ethers: consecutive methylene linkage and insertion of ethylene glycol. NEW J CHEM 2021. [DOI: 10.1039/d1nj00657f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Hypervalent iodine mediated selective synthesis of imidazo[1,2-a]pyridine ethers using ethylene glycol as a methoxy ethanol source as well as solvent under metal-free conditions is described.
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Affiliation(s)
- Rahul Kumar
- Academy of Scientific & Innovative Research Ghaziabad
- CSIR–Central Salt & Marine Chemicals Research Institute
- G. B. Marg
- Bhavnagar-364002
- India
| | - Deepa Rawat
- Academy of Scientific & Innovative Research Ghaziabad
- CSIR–Central Salt & Marine Chemicals Research Institute
- G. B. Marg
- Bhavnagar-364002
- India
| | - Rashmi Semwal
- Academy of Scientific & Innovative Research Ghaziabad
- CSIR–Central Salt & Marine Chemicals Research Institute
- G. B. Marg
- Bhavnagar-364002
- India
| | - Gaurav Badhani
- Academy of Scientific & Innovative Research Ghaziabad
- CSIR–Central Salt & Marine Chemicals Research Institute
- G. B. Marg
- Bhavnagar-364002
- India
| | - Subbarayappa Adimurthy
- Academy of Scientific & Innovative Research Ghaziabad
- CSIR–Central Salt & Marine Chemicals Research Institute
- G. B. Marg
- Bhavnagar-364002
- India
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31
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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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32
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Patel OPS, Jaspal S, Shinde VN, Nandwana NK, Rangan K, Kumar A. Phenyliodine(III) Diacetate-Mediated 1,2-ipso-Migration in Mannich Bases of Imidazo[1,2-a]pyridines: Preparation of N-Acetoxymethyl/Alkoxymethyl-N-arylimidazo[1,2-a]pyridine-3-amines. J Org Chem 2020; 85:7309-7321. [DOI: 10.1021/acs.joc.0c00674] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Om P. S. Patel
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Sonam Jaspal
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Vikki N. Shinde
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Nitesh K. Nandwana
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani, Rajasthan 333031, India
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33
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Kumar R, Rawat D, Adimurthy S. Polyethylene Glycol (PEG-400) as Methylene Spacer and Green Solvent for the Synthesis of Heterodiarylmethanes under Metal-Free Conditions. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000467] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Rahul Kumar
- Academy of Scientific & Innovative Research; CSIR-Central Salt & Marine Chemicals Research Institute; G.B. Marg; 364 002 Bhavnagar Gujarat India
| | - Deepa Rawat
- Academy of Scientific & Innovative Research; CSIR-Central Salt & Marine Chemicals Research Institute; G.B. Marg; 364 002 Bhavnagar Gujarat India
| | - Subbarayappa Adimurthy
- Academy of Scientific & Innovative Research; CSIR-Central Salt & Marine Chemicals Research Institute; G.B. Marg; 364 002 Bhavnagar Gujarat India
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34
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Kour J, Venkateswarlu V, Verma PK, Hussain Y, Dubey G, Bharatam PV, Sahoo SC, Sawant SD. Oxone-DMSO Triggered Methylene Insertion and C(sp2)−C(sp3)-H−C(sp2) Bond Formation to Access Functional Bis-Heterocycles. J Org Chem 2020; 85:4951-4962. [DOI: 10.1021/acs.joc.9b03477] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jaspreet Kour
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Vunnam Venkateswarlu
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Praveen K. Verma
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
| | - Yaseen Hussain
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Gurudutt Dubey
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar 160062, Punjab, India
| | - Prasad V. Bharatam
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar 160062, Punjab, India
| | - Subash C. Sahoo
- Department of Chemistry and Center of Advanced Studies in Chemistry, Panjab University Chandigarh, Chandigarh 160014, India
| | - Sanghapal D. Sawant
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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35
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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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36
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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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37
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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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38
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Rastogi GK, Deka B, Deb ML, Baruah PK. Diastereoselective sp3-C-H Functionalization of Arylmethyl Ketones and Transformation of E
- to Z
-Products Through Photocatalysis. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901415] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Gaurav K. Rastogi
- Department of Applied Sciences, GUIST; Gauhati University; -781014 Guwahati Assam India
- Department of Applied Organic Chemistry; CSIR-NEIST; -785006 Jorhat Assam India
| | - Bhaskar Deka
- Department of Applied Sciences, GUIST; Gauhati University; -781014 Guwahati Assam India
| | - Mohit L. Deb
- Department of Applied Sciences, GUIST; Gauhati University; -781014 Guwahati Assam India
| | - Pranjal K. Baruah
- Department of Applied Sciences, GUIST; Gauhati University; -781014 Guwahati Assam India
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39
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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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40
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Xu J, Deng R, Chen J, Tang X, Zhao J. DMSO/H
2
O
2
Promoted Regioselective Synthesis of Benzoimidazo[2,1‐b]thiazoles from 2‐Mercaptobenzimidazoles and Ketones in Water. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900909] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jingxiu Xu
- School of PharmacyGuangdong Medical University Dongguan 523808 People's Republic of China
- Dongguan Key Laboratory of Drug Design and Formulation Technology Dongguan 523808 People's Republic of China
| | - Renjin Deng
- School of PharmacyGuangdong Medical University Dongguan 523808 People's Republic of China
| | - Jiaxi Chen
- School of PharmacyGuangdong Medical University Dongguan 523808 People's Republic of China
- Dongguan Key Laboratory of Drug Design and Formulation Technology Dongguan 523808 People's Republic of China
| | - Xiaodong Tang
- School of Pharmaceutical SciencesSouthern Medical University Guangzhou 510515 People's Republic of China
- Dongguan Key Laboratory of Drug Design and Formulation Technology Dongguan 523808 People's Republic of China
| | - Jinwu Zhao
- School of PharmacyGuangdong Medical University Dongguan 523808 People's Republic of China
- Dongguan Key Laboratory of Drug Design and Formulation Technology Dongguan 523808 People's Republic of China
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41
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Nandwana N, Patel OPS, Srivathsa MR, Kumar A. Dual Role of Glyoxal in Metal-Free Dicarbonylation Reaction: Synthesis of Symmetrical and Unsymmetrical Dicarbonyl Imidazoheterocycles. ACS OMEGA 2019; 4:10140-10150. [PMID: 31460106 PMCID: PMC6648449 DOI: 10.1021/acsomega.9b00716] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 05/22/2019] [Indexed: 05/28/2023]
Abstract
A practical and efficient method has been developed for the dicarbonylation of imidazoheterocycles using glyoxals as dicarbonyl precursors under metal-free conditions in acetic acid. A series of symmetrical and unsymmetrical dicarbonyl imidazoheterocycles was synthesized in good yields. Aryl and alkyl glyoxals also demonstrated excellent reactivity under similar reaction conditions and delivered corresponding dicarbonyl imidazoheterocycles in high yields. It is believed that the glyoxal plays a dual role both as a dicarbonyl source and as an oxidant in this transformation. A probable mechanistic pathway has been proposed based on control experiments and electrospray ionization high-resolution mass spectrometry analysis.
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42
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Kumar Verma P, Vishwakarma RA, Sawant SD. Reaction Medium as the Installing Reservoir for Key Functionalities in the Molecules. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900223] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Praveen Kumar Verma
- Medicinal Chemistry DivisionCSIR-Indian Institute of Integrative Medicine Canal Road Jammu- 180001 India
| | - Ram A. Vishwakarma
- Medicinal Chemistry DivisionCSIR-Indian Institute of Integrative Medicine Canal Road Jammu- 180001 India
| | - Sanghapal D. Sawant
- Medicinal Chemistry DivisionCSIR-Indian Institute of Integrative Medicine Canal Road Jammu- 180001 India
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43
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Tong H, Chen C, Liu W, Pan Y, Duan L. Chlorothiomethylation of Alkynes with HCl and Dimethyl Sulfoxide: An Efficient Approach to (E)‐α‐chloro‐β‐(methylthio)alkenes. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900108] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Hanqing. Tong
- College of ChemistryGuangdong University of Petrochemical Technology 2 Guandu Road Maoming 525000 P. R. China
| | - Cui Chen
- College of ChemistryGuangdong University of Petrochemical Technology 2 Guandu Road Maoming 525000 P. R. China
| | - Weibing. Liu
- College of ChemistryGuangdong University of Petrochemical Technology 2 Guandu Road Maoming 525000 P. R. China
| | - Yupeng. Pan
- Shenzhen Grubbs InstituteSouthern Unversity of Science and Technology (SUSTech) Shenzhen 518055 P. R. China
| | - Linhai. Duan
- College of ChemistryGuangdong University of Petrochemical Technology 2 Guandu Road Maoming 525000 P. R. China
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44
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Tian LL, Lu S, Zhang ZH, Huang EL, Yan HT, Zhu X, Hao XQ, Song MP. Copper-Catalyzed Double Thiolation To Access Sulfur-Bridged Imidazopyridines with Isothiocyanate. J Org Chem 2019; 84:5213-5221. [DOI: 10.1021/acs.joc.9b00186] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Lu-Lu Tian
- College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Shuai Lu
- College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Zhe-Hua Zhang
- College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - En-Ling Huang
- College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Hua-Ting Yan
- College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
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45
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Chang MY, Chen HY, Tsai YL. NH 2OH-HCl-Mediated Umpolung α-Methylsulfonylation of α-Sulfonyl Ketones with Methylsulfoxides: Synthesis of α,β-Bis-sulfonyl Arylketones. Org Lett 2019; 21:1832-1836. [PMID: 30788972 DOI: 10.1021/acs.orglett.9b00422] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In this paper, a novel and efficient route for the synthesis of α,β-bis-sulfonyl arylketones via an NH2OH-HCl-mediated intermolecular umpolung α-methylsulfonylation of α-sulfonyl ketones with methylsulfoxides is described. A plausible mechanism is proposed and discussed. Various reaction conditions for this efficient, one-pot, environmentally friendly transformation were investigated.
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Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry , Kaohsiung Medical University , Kaohsiung 807 , Taiwan.,Department of Medical Research , Kaohsiung Medical University Hospital , Kaohsiung 807 , Taiwan
| | - Han-Yu Chen
- Department of Medicinal and Applied Chemistry , Kaohsiung Medical University , Kaohsiung 807 , Taiwan
| | - Yu-Lin Tsai
- Department of Medicinal and Applied Chemistry , Kaohsiung Medical University , Kaohsiung 807 , Taiwan
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46
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Patel OPS, Nandwana NK, Sah AK, Kumar A. Metal-free synthesis of aminomethylated imidazoheterocycles: dual role of tert-butyl hydroperoxide as both an oxidant and a methylene source. Org Biomol Chem 2019; 16:8620-8628. [PMID: 30379182 DOI: 10.1039/c8ob02432d] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel and efficient aminomethylation approach has been developed for the regioselective functionalization of imidazoheterocycles under metal-free conditions. A wide range of imidazoheterocycles and 2/4-aminoazaheterocycles successfully provided corresponding aminomethylated imidazoheterocycles in moderate to excellent (33-80%) yields. The isotopic labelling study suggested that TBHP played a dual role as both an oxidant and a methylene source in this transformation. The developed protocol follows a radical pathway which is supported by radical trapping experiments.
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Affiliation(s)
- Om P S Patel
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, 333031, Rajasthan, India.
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47
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Ebule R, Mudshinge S, Nantz MH, Mashuta MS, Hammond GB, Xu B. A 5 + 1 Protic Acid Assisted Aza-Pummerer Approach for Synthesis of 4-Chloropiperidines from Homoallylic Amines. J Org Chem 2019; 84:3249-3259. [PMID: 30758961 DOI: 10.1021/acs.joc.8b03162] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We report that HCl·DMPU induces the formation of (thiomethyl)methyl carbenium ion from DMSO under mild conditions. Homoallylic amines react with this electrophile to generate 4-chloropiperidines in good yields. The method applies to both aromatic and aliphatic amines. The use of HCl·DMPU as both non-nucleophilic base and chloride source constitutes an environmentally benign alternative for piperidine formation. The reaction has a broad substrate scope, and the conditions offer good chemical yields with high functional group tolerance and scalability.
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Affiliation(s)
- Rene Ebule
- Department of Chemistry , University of Louisville , Louisville , Kentucky 40292 , United States
| | - Sagar Mudshinge
- Department of Chemistry , University of Louisville , Louisville , Kentucky 40292 , United States
| | - Michael H Nantz
- Department of Chemistry , University of Louisville , Louisville , Kentucky 40292 , United States
| | - Mark S Mashuta
- Department of Chemistry , University of Louisville , Louisville , Kentucky 40292 , United States
| | - Gerald B Hammond
- Department of Chemistry , University of Louisville , Louisville , Kentucky 40292 , United States
| | - Bo Xu
- College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , 2999 North Renmin Lu , Shanghai 201620 , China
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48
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Shu WM, He JX, Zhang XF, Wang S, Wu AX. TFA-Mediated DMSO-Participant Sequential Oxidation/1,3-Dipolar Cycloaddition Cascade of Pyridinium Ylides for the Assembly of Indolizines. J Org Chem 2019; 84:2962-2968. [DOI: 10.1021/acs.joc.8b02755] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Wen-Ming Shu
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, People’s Republic of China
| | - Jian-Xin He
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, People’s Republic of China
| | - Xun-Fang Zhang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, People’s Republic of China
| | - Shuai Wang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, People’s Republic of China
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
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49
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Lv F, Tang B, Hao E, Liu Q, Wang H, Jiao L. Transition-metal-free regioselective cross-coupling of BODIPYs with thiols. Chem Commun (Camb) 2019; 55:1639-1642. [DOI: 10.1039/c8cc09821b] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Transition-metal-free, regioselective C–H/S–H cross-couplings of BODIPYs with thiols provides structurally diverse thiolated BODIPYs via a radical pathway.
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Affiliation(s)
- Fan Lv
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- School of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
| | - Bing Tang
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- School of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
| | - Erhong Hao
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- School of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
| | - Qingyun Liu
- College of Chemistry and Environmental Engineering
- Shandong University of Science and Technology
- Qingdao
- China
| | - Hua Wang
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- School of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
| | - Lijuan Jiao
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- School of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
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50
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Shu WM, Wang S, Zhang XF, He JX, Wu AX. A cascade oxidation/[4 + 1] annulation of sulfonium salts for synthesis of polyfunctional furans: DMSO as one carbon source. Org Biomol Chem 2019; 17:4311-4316. [DOI: 10.1039/c9ob00443b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel DMSO-involved cascade reaction of stabilized sulfonium salts has been established for direct construction of polyfunctional furans.
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Affiliation(s)
- Wen-Ming Shu
- College of Chemistry and Environmental Engineering
- Yangtze University
- Jingzhou 434023
- P. R. China
| | - Shuai Wang
- College of Chemistry and Environmental Engineering
- Yangtze University
- Jingzhou 434023
- P. R. China
| | - Xun-Fang Zhang
- College of Chemistry and Environmental Engineering
- Yangtze University
- Jingzhou 434023
- P. R. China
| | - Jian-Xin He
- College of Chemistry and Environmental Engineering
- Yangtze University
- Jingzhou 434023
- P. R. China
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
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