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Natarajan P, Chatterjee A, J SJS, Peruncheralathan S. Unexpected dearomatization of N-protected 5-aminopyrazoles at ambient temperature: a simple route to highly functionalized pyrazolines. Org Biomol Chem 2024; 22:6288-6293. [PMID: 39041174 DOI: 10.1039/d4ob00879k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
We present a new strategy for the dearomatized hydroxylation of 5-aminopyrazoles using a hypervalent iodine reagent at room temperature. This method produces a series of 4-hydroxy-5-iminopyrazolines with good to excellent yields within 2 hours. Additionally, we demonstrate a domino reaction for the synthesis of 4-hydroxy-pyrazolones. Mechanistic studies indicate that the dearomatization proceeds through a cationic intermediate.
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Affiliation(s)
- Pradeep Natarajan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, an OCC of Homi Bhabha National Institute, Khurda - 752050, India.
| | - Arpita Chatterjee
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, an OCC of Homi Bhabha National Institute, Khurda - 752050, India.
| | - Siddharth Jaya Sajeevan J
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, an OCC of Homi Bhabha National Institute, Khurda - 752050, India.
| | - Saravanan Peruncheralathan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, an OCC of Homi Bhabha National Institute, Khurda - 752050, India.
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2
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Pigot C, Brunel D, Dumur F. Indane-1,3-Dione: From Synthetic Strategies to Applications. Molecules 2022; 27:5976. [PMID: 36144711 PMCID: PMC9501146 DOI: 10.3390/molecules27185976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/01/2022] [Accepted: 09/06/2022] [Indexed: 11/26/2022] Open
Abstract
Indane-1,3-dione is a versatile building block used in numerous applications ranging from biosensing, bioactivity, bioimaging to electronics or photopolymerization. In this review, an overview of the different chemical reactions enabling access to this scaffold but also to the most common derivatives of indane-1,3-dione are presented. Parallel to this, the different applications in which indane-1,3-dione-based structures have been used are also presented, evidencing the versatility of this structure.
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Affiliation(s)
- Corentin Pigot
- Aix Marseille Univ, CNRS, ICR, UMR 7273, F-13397 Marseille, France
| | - Damien Brunel
- Aix Marseille Univ, CNRS, ICR, UMR 7273, F-13397 Marseille, France
| | - Frédéric Dumur
- Aix Marseille Univ, CNRS, ICR, UMR 7273, F-13397 Marseille, France
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3
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A. Farghaly T, A. Al-Hussain S, E. A. Zaki M, H. Asghar B, A. Muhammad Z. Synthesis of spiropyrazoles under organic and nonorganic catalysis. CURR ORG CHEM 2022. [DOI: 10.2174/1385272826666220517220157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
Spiropyrazoles display many biological biological activities such as antitumor, vasodilation, analgesic, phosphodiesterase inhibitors, aldosterone antagonistic, anabolic, androgenic, anti-inflammatory, progestational and salt-retaining activities and they also exert neuroprotection in dopaminergic cell death. Many efforts have been made to obtain these derivatives with high yield and excellent regio-, diastereo- and enantioselectivities. Most of the spiroprazole synthesis methods were proceeded in good to excellent yield in the presence of organic catalysts as for examples squaramide, NHC pre-catalyst, pyrrole derivatives, bis-oxazoline, DMAP, DABCO, thiourea derivatives, DBU, acetic acid and quinoline catalysts. In addition, the inorganic and organo-metallic catalysts have been proven their efficiency in synthesis of various types of spiro-pyrazoles in excellent yield. Thus, in this review we have compiled all citations for the synthesis of spiropyrazoles in the presence of various types of catalysts such as organic, inorganic, and metalorganic catalysts in the range 2020 to 2012. This review article is a useful compilation for researchers interested in the synthesis of spiropyrazole derivatives and will assist them in selecting appropriate catalysts for preparation of their spiropyrazoles.
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Affiliation(s)
- Thoraya A. Farghaly
- Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Sami A. Al-Hussain
- Department of Chemistry, Faculty of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Magdi E. A. Zaki
- Department of Chemistry, Faculty of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Basim H. Asghar
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Zeinab A. Muhammad
- Department of Organic Chemistry, National Organization for Drug Control and Research (NODCAR), Giza 12311, Egypt
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4
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Pati S, Rayi S, Namboothiri INN. Stereoselective Synthesis of Tri- and Tetrasubstituted Olefins via 1,6-Additions of Diazo Compounds and Their Precursors to p-Quinone Methides. ACS ORGANIC & INORGANIC AU 2021; 1:51-59. [PMID: 36855755 PMCID: PMC9954373 DOI: 10.1021/acsorginorgau.1c00012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Reactions of para-quinone methides (p-QMs) with α-diazo-β-ketosulfones and their corresponding esters as well as simple β-dicarbonyl compounds and β-ketosulfones have been carried out under basic conditions. While the reaction of diazosulfone with p-QMs afforded trisubstituted olefins via deacylative 1,6-addition and elimination, α-diazo-β-ketoesters and various active methylene compounds such as 1,3-dicarbonyls and β-ketosulfones afforded tetrasubstituted olefins via 1,6-addition and aerial oxidation. These simple, environmentally benign, and mechanistically diverse protocols provided the products in moderate to excellent yields and selectivities.
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5
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Enantioselective 1,6‐Conjugate Addition of Dialkyl α‐Diazo Methylphosphonate to
para
‐Quinone Methides. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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6
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Tian YT, Zhang FG, Ma JA. Regioselective [3 + 2] Cycloaddition Reaction of 3-Alkynoates with Seyferth-Gilbert Reagent. J Org Chem 2021; 86:3574-3582. [PMID: 33507737 DOI: 10.1021/acs.joc.0c02957] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A Et3N-triggered regioselective [3 + 2] cycloaddition reaction of 3-alkynoates with Seyferth-Gilbert reagent has been developed to furnish a series of trisubstituted pyrazole-3-phosphonates. A one-pot cycloaddition/alkylation sequence further offered access to the corresponding fully substituted pyrazoles.
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Affiliation(s)
- Yu-Ting Tian
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Frontiers Science Center for Synthetic Biology (Ministry of Education), and Tianjin Collaborative Innovation Centre of Chemical Science & Engineering, Tianjin University, Tianjin 300072, People's Republic of China.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, People's Republic of China
| | - Fa-Guang Zhang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Frontiers Science Center for Synthetic Biology (Ministry of Education), and Tianjin Collaborative Innovation Centre of Chemical Science & Engineering, Tianjin University, Tianjin 300072, People's Republic of China.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, People's Republic of China
| | - Jun-An Ma
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Frontiers Science Center for Synthetic Biology (Ministry of Education), and Tianjin Collaborative Innovation Centre of Chemical Science & Engineering, Tianjin University, Tianjin 300072, People's Republic of China.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, People's Republic of China
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7
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Tu L, Gao L, Wang X, Shi R, Ma R, Li J, Lan X, Zheng Y, Liu J. [3 + 2] Cycloaddition of Nitrile Imines with Enamides: An Approach to Functionalized Pyrazolines and Pyrazoles. J Org Chem 2020; 86:559-573. [PMID: 33301335 DOI: 10.1021/acs.joc.0c02244] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient [3 + 2] cycloaddition of in situ generated nitrile imines with enamides has been established. A wide range of functionalized pyrazoline derivatives (53 examples) were obtained in moderate to good yields (up to 96%) under very mild conditions. This protocol features broad substrate scope, good functional group tolerance, and operational simplicity. Practical transformation of the products into useful pyrazoles via a one-pot process and the scalability of this protocol highlight the utility of this synthetic methodology.
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Affiliation(s)
- Liang Tu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Limei Gao
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Xiaomeng Wang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Ruijie Shi
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Rupei Ma
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Junfei Li
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Xiaoshuang Lan
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Yongsheng Zheng
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Jikai Liu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
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8
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Jamali MF, Vaishanv NK, Mohanan K. The Bestmann-Ohira Reagent and Related Diazo Compounds for the Synthesis of Azaheterocycles. CHEM REC 2020; 20:1394-1408. [PMID: 32986304 DOI: 10.1002/tcr.202000091] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 09/03/2020] [Accepted: 09/03/2020] [Indexed: 12/14/2022]
Abstract
Azaheterocycles are one of the most prevalent classes of compounds present in numerous bioactive compounds, natural products, and agrochemicals, and undoubtedly, new methods to access them are always in high demand. Among the methods available, the 1,3-dipolar cycloaddition reactions involving diazo compounds are particularly attractive because of their ability to rapidly construct densely functionalized azaheterocycles in a regioselective manner. In this context, the Bestmann-Ohira reagent has become a well-known reagent for the 1,3-dipolar cycloaddition reactions to produce phosphonylated heterocycles, besides its widespread use as a homologating agent for the conversion of aldehydes to alkynes. This account details our efforts toward broadening the synthetic utility of the Bestmann-Ohira reagent and related compounds for the preparation of azaheterocycles such as pyrazoles, spirooxindoles, triazoles, triazolines, and spiropyrazolines, emphasizing on domino multicomponent reactions employing readily available feedstock reagents.
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Affiliation(s)
- Muhammad Fahad Jamali
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Narendra Kumar Vaishanv
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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9
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Zhai SJ, Peng X, Zhang FG, Ma JA. Catalytic Direct Regioselective Synthesis of Phosphonylated Tetrazoles from Aryl Diazonium Salts and Seyferth-Gilbert Reagent. Org Lett 2019; 21:9884-9888. [PMID: 31808697 DOI: 10.1021/acs.orglett.9b03800] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Here we report a Ag-catalyzed [3 + 2] cycloaddition reaction between aryl diazonium salts and Seyferth-Gilbert reagent in a regioselective manner. This operationally simple transformation proceeds in an atom-economical way under mild reaction conditions, providing facile access to a broad set of phosphonylated tetrazoles. The synthetic utility of this method is further showcased by a straightforward procedure from upstream aromatic amines, denitrogenation transformations, and preparation of a phosphonylated drug scaffold.
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Affiliation(s)
- Shi-Jing Zhai
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering , Tianjin University , Tianjin 300072 , P. R. of China
| | - Xing Peng
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering , Tianjin University , Tianjin 300072 , P. R. of China
| | - Fa-Guang Zhang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering , Tianjin University , Tianjin 300072 , P. R. of China.,Joint School of NUS & TJU , International Campus of Tianjin University , Fuzhou 350207 , P. R. of China
| | - Jun-An Ma
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering , Tianjin University , Tianjin 300072 , P. R. of China.,Joint School of NUS & TJU , International Campus of Tianjin University , Fuzhou 350207 , P. R. of China
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10
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Synthesis of Pyrazolo-Fused 4-Azafluorenones in an Ionic Liquid. Mechanistic Insights by Joint Studies Using DFT Analysis and Mass Spectrometry. Catalysts 2019. [DOI: 10.3390/catal9100820] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A series of pyrazolo-fused 4-azafluorenones (indeno[1,2-b]pyrazolo[4,3-e]pyridines, IPP) were synthesized via the three-component reaction between arylaldehydes, 3-methyl-1H-pyrazol-5-amine and 1,3-indanedione in an ionic liquid as a catalyst at room temperature. The applied synthetic route has the advantages of easy work-up under mild reaction conditions presenting moderate yields and an environmentally benign procedure. A theoretical study based on conceptual-density functional theory has been done, bond reactivity indices have been calculated and an electrophilic and nucleophilic character of localized orbitals has been determined to analyze the possible electronic mechanisms.
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11
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Su Y, Zhao Y, Chang B, Zhao X, Zhang R, Liu X, Huang D, Wang KH, Huo C, Hu Y. [3 + 2] Cycloaddition of para-Quinone Methides with Nitrile Imines: Approach to Spiro-pyrazoline-cyclohexadienones. J Org Chem 2019; 84:6719-6728. [PMID: 31021088 DOI: 10.1021/acs.joc.9b00434] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
[3 + 2] cycloaddition of para-quinone methides with nitrile imines under mild conditions has been achieved. The corresponding spiro-pyrazoline-cyclohexadienone products were constructed in good to excellent yields (up to 97% yield) with high regioselectivity. This straightforward protocol exhibits good functional group tolerance and scalability and provides the spiro-pyrazoline-cyclohexadienones.
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Affiliation(s)
- Yingpeng Su
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Yanan Zhao
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Bingbing Chang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Xiaolong Zhao
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Rong Zhang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Xuan Liu
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Danfeng Huang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Ke-Hu Wang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Congde Huo
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Yulai Hu
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
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12
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Deacylative 1,6-addition of Bestmann-Ohira reagent to p-quinone methides for the synthesis of α-diazo-β-diarylphosphonates and cis-stilbenyl phosphonates. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.02.055] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Sadiq Z, Naz S, Hussain EA, Aslam U. Spiropyrazolines: A Worthy Insight into the Recent Strategies and Synthetic Applications. LETT ORG CHEM 2019. [DOI: 10.2174/1570178615666181022141147] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The structural diversity of spiro heterocycles has achieved an extensive attention of organic chemists due to their vast synthetic applications. Among these, spiropyrazolines are gaining considerable prominence due to their biological and pharmacological activities, electrophotographic photosensitivity as well as their application as beneficial synthons for spirocyclopropanes, cyclobutanes, pyrrolidinones, pyrazoles, 3-amino oxindoles and several natural products molecular architecture. In view of all these, this review aims to provide the classical and advanced regioselective approaches as well as synthetic applications of spiropyrazolines. The key reactions for its synthesis are 1,3-dipolar cycloaddition and condensations that are described completely in this piece of work.
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Affiliation(s)
- Zubi Sadiq
- Department of Chemistry, Lahore College for Women University, Lahore, Pakistan
| | - Sadia Naz
- Institute of Chemistry, University of the Punjab, Lahore, Pakistan
| | - Erum Akbar Hussain
- Department of Chemistry, Lahore College for Women University, Lahore, Pakistan
| | - Umbreen Aslam
- Department of Chemistry, Lahore College for Women University, Lahore, Pakistan
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14
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Benzylidine indane-1,3-diones: As novel urease inhibitors; synthesis, in vitro, and in silico studies. Bioorg Chem 2018; 81:658-671. [PMID: 30253339 DOI: 10.1016/j.bioorg.2018.09.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Accepted: 09/18/2018] [Indexed: 01/26/2023]
Abstract
Current study deals with the evaluation of indane-1,3-dione based compounds as new class of urease inhibitors. For that purpose, benzylidine indane-1,3-diones (1-30) were synthesized and fully characterized by different spectroscopic techniques including EI-MS, HREI-MS, 1H, and 13C NMR. All synthetic molecules 1-30 were evaluated for urease inhibitory activity and showed good to moderate inhibitory potential within the range of (IC50 = 11.60 ± 0.3-257.05 ± 0.7 µM) as compared to the standard acetohydroxamic acid (IC50 = 27.0 ± 0.5 µM). Compound 1 (IC50 = 11.60 ± 0.3 µM) was found to be most potent inhibitor amongst all derivatives. The key binding interactions of most active compounds within the enzyme pocket were evaluated through in silico studies.
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15
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Hussein EM, Moussa Z, Ahmed SA. Exclusive regioselective 1,3-dipolar cycloaddition of 9-diazo-9H-fluorene and diphenyldiazomethane to 2-arylideneindane-1,3-diones: new approach toward effective synthesis of novel spiropyrazole derivatives. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-018-2249-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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16
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Gupta AK, Ahamad S, Vaishanv NK, Kant R, Mohanan K. Base-mediated 1,6-conjugate addition of the Seyferth-Gilbert reagent to para-quinone methides. Org Biomol Chem 2018; 16:4623-4627. [PMID: 29876566 DOI: 10.1039/c8ob01017j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A 1,6-conjugate addition reaction of the Seyferth-Gilbert reagent (SGR) to p-quinone methides is reported. This base-mediated protocol allows rapid access to diarylmethylated diazomethylphosphonates. The reaction proceeds under mild basic conditions, making it a practical approach for the synthesis of diarylmethylated diazomethylphosphonates with a broad substrate scope. Interestingly, the treatment of the conjugate adduct with a catalytic amount of rhodium acetate resulted in the 1,2-aryl migration of the rhodium carbenoid intermediate to generate the corresponding 1,2-diaryl alkenylphosphonates in excellent yields.
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Affiliation(s)
- Ashis Kumar Gupta
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India. and Academy of Scientific and Innovative Research, New Delhi, India
| | - Shakir Ahamad
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India. and Academy of Scientific and Innovative Research, New Delhi, India
| | - Narendra Kumar Vaishanv
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.
| | - Ruchir Kant
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India. and Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
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17
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Nair D, Pavashe P, Namboothiri IN. 1,3-Dipolar cycloaddition of chalcones and arylidene-1,3-dicarbonyls with diazosulfone for the regioselective synthesis of functionalized pyrazoles and pyrazolines. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.04.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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18
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Ahamad S, Patidar RK, Kumar A, Kant R, Mohanan K. Three-Component Synthesis of 3,4-Disubstituted Pyrazoles Using Diazosulfone as a Diazomethane Surrogate. ChemistrySelect 2017. [DOI: 10.1002/slct.201702384] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shakir Ahamad
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
| | - Rajesh Kumar Patidar
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
| | - Anuj Kumar
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
| | - Ruchir Kant
- Molecular and Structural Biology; CSIR-Central Drug Research Institute; Lucknow 226031 India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
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