1
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Betcke I, Götzinger AC, Kornet MM, Müller TJJ. Multicomponent syntheses of pyrazoles via (3 + 2)-cyclocondensation and (3 + 2)-cycloaddition key steps. Beilstein J Org Chem 2024; 20:2024-2077. [PMID: 39161713 PMCID: PMC11331544 DOI: 10.3762/bjoc.20.178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Accepted: 07/19/2024] [Indexed: 08/21/2024] Open
Abstract
Pyrazoles are rarely found in nature but are traditionally used in the agrochemical and pharmaceutical industries, while other areas of use are also actively developing. However, they have also found numerous other applications. The search for new and efficient syntheses of these heterocycles is therefore highly relevant. The modular concept of multicomponent reactions (MCR) has paved a broad alley to heteroaromatics. The advantages over traditional methods are the broader scope and increased efficiency of these reactions. In particular, traditional multistep syntheses of pyrazoles have considerably been extended by MCR. Progress has been made in the cyclocondensation of 1,3-dielectrophiles that are generated in situ. Limitations in the regioselectivity of cyclocondensation with 1,3-dicarbonyls were overcome by the addition-cyclocondensation of α,β-unsaturated ketones. Embedding 1,3-dipolar cycloadditions into a one-pot process has additionally been developed for concise syntheses of pyrazoles. The MCR strategy also allows for concatenating classical condensation-based methodology with modern cross-coupling and radical chemistry, as well as providing versatile synthetic approaches to pyrazoles. This overview summarizes the most important MCR syntheses of pyrazoles based on ring-forming sequences in a flashlight fashion.
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Affiliation(s)
- Ignaz Betcke
- Heinrich-Heine-Universität Düsseldorf, Math.-Nat. Fakultät, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Alissa C Götzinger
- Heinrich-Heine-Universität Düsseldorf, Math.-Nat. Fakultät, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Maryna M Kornet
- Heinrich-Heine-Universität Düsseldorf, Math.-Nat. Fakultät, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
- Zaporizhzhia National University, Faculty of Biology, Department of Chemistry, Zhukovskogo Street 66, 69600 Zaporizhzhia, Ukraine
| | - Thomas J J Müller
- Heinrich-Heine-Universität Düsseldorf, Math.-Nat. Fakultät, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
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2
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Dias HVR, Parasar D, Yakovenko AA, Stephens PW, Muñoz-Castro Á, Vanga M, Mykhailiuk P, Slobodyanyuk E. In situ studies of reversible solid-gas reactions of ethylene responsive silver pyrazolates. Chem Sci 2024; 15:2019-2025. [PMID: 38332831 PMCID: PMC10848740 DOI: 10.1039/d3sc04182d] [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] [Received: 08/10/2023] [Accepted: 11/28/2023] [Indexed: 02/10/2024] Open
Abstract
Solid-gas reactions and in situ powder X-ray diffraction investigations of trinuclear silver complexes {[3,4,5-(CF3)3Pz]Ag}3 and {[4-Br-3,5-(CF3)2Pz]Ag}3 supported by highly fluorinated pyrazolates reveal that they undergo intricate ethylene-triggered structural transformations in the solid-state producing dinuclear silver-ethylene adducts. Despite the complexity, the chemistry is reversible producing precursor trimers with the loss of ethylene. Less reactive {[3,5-(CF3)2Pz]Ag}3 under ethylene pressure and low-temperature conditions stops at an unusual silver-ethylene complex in the trinuclear state, which could serve as a model for intermediates likely present in more common trimer-dimer reorganizations described above. Complete structural data of three novel silver-ethylene complexes are presented together with a thorough computational analysis of the mechanism.
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Affiliation(s)
- H V Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington Arlington Texas 76019 USA
| | - Devaborniny Parasar
- Department of Chemistry and Biochemistry, The University of Texas at Arlington Arlington Texas 76019 USA
| | - Andrey A Yakovenko
- X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory Argonne Illinois 60439 USA
| | - Peter W Stephens
- Department of Physics and Astronomy, Stony Brook University Stony Brook NY 11794-3800 USA
| | - Álvaro Muñoz-Castro
- Facultad de Ingeniería, Arquitectura y Diseño, Universidad San Sebastián Bellavista 7 Santiago 8420524 Chile
| | - Mukundam Vanga
- Department of Chemistry and Biochemistry, The University of Texas at Arlington Arlington Texas 76019 USA
| | - Pavel Mykhailiuk
- Enamine Ltd. Winston Churchill Street 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv, Faculty of Chemistry Volodymyrska 60 01601 Kyiv Ukraine
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3
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Liashuk OS, Andriashvili VA, Tolmachev AO, Grygorenko OO. Chemoselective Reactions of Functionalized Sulfonyl Halides. CHEM REC 2024; 24:e202300256. [PMID: 37823680 DOI: 10.1002/tcr.202300256] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/13/2023] [Indexed: 10/13/2023]
Abstract
Chemoselective transformations of functionalized sulfonyl fluorides and chlorides are surveyed comprehensively. It is shown that sulfonyl fluorides provide an excellent selectivity control in their reactions. Thus, numerous conditions are tolerated by the SO2 F group - from amide and ester formation to directed ortho-lithiation and transition-metal-catalyzed cross-couplings. Meanwhile, sulfur (VI) fluoride exchange (SuFEx) is also compatible with numerous functional groups, thus confirming its title of "another click reaction". On the contrary, with a few exceptions, most transformations of functionalized sulfonyl chlorides typically occur at the SO2 Cl moiety.
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Affiliation(s)
- Oleksandr S Liashuk
- Enamine Ltd. (www.enamine.net), Winston Churchill Street 78, Kyїv, 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyїv, 01601, Ukraine
| | - Vladyslav A Andriashvili
- Enamine Ltd. (www.enamine.net), Winston Churchill Street 78, Kyїv, 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyїv, 01601, Ukraine
| | - Andriy O Tolmachev
- Enamine Ltd. (www.enamine.net), Winston Churchill Street 78, Kyїv, 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyїv, 01601, Ukraine
| | - Oleksandr O Grygorenko
- Enamine Ltd. (www.enamine.net), Winston Churchill Street 78, Kyїv, 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyїv, 01601, Ukraine
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4
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Altarejos J, Merino E, Sucunza D, Vaquero JJ, Carreras J. One-Pot (3 + 2) Cycloaddition-Isomerization-Oxidation of 2,2,2-Trifluorodiazoethane and Styryl Derivatives. J Org Chem 2023; 88:11258-11262. [PMID: 37478336 PMCID: PMC10407847 DOI: 10.1021/acs.joc.3c00396] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Indexed: 07/23/2023]
Abstract
A facile access to 5-aryl-3-trifluoromethylpyrazoles has been developed by a one-pot (3 + 2) cycloaddition-isomerization-oxidation sequence employing 2,2,2-trifluorodiazoethane and styryl derivatives. A broad variety of functional groups and good yields are achieved under mild conditions. Additionally, the functionalization of 3-trifluoromethylpyrazoles was studied. DFT calculations of the cycloaddition transition state energies are consistent with the experimentally observed reactivity.
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Affiliation(s)
- Julia Altarejos
- Universidad
de Alcalá, Departamento de Química
Orgánica y Química Inorgánica, Instituto de Investigación
Química “Andrés M. del Río” (IQAR), 28805, Alcala de
Henares, Madrid, Spain
- Instituto
Ramón y Cajal de Investigación Sanitaria (IRYCIS) 28034, Madrid, Spain
| | - Estíbaliz Merino
- Universidad
de Alcalá, Departamento de Química
Orgánica y Química Inorgánica, Instituto de Investigación
Química “Andrés M. del Río” (IQAR), 28805, Alcala de
Henares, Madrid, Spain
- Instituto
Ramón y Cajal de Investigación Sanitaria (IRYCIS) 28034, Madrid, Spain
| | - David Sucunza
- Universidad
de Alcalá, Departamento de Química
Orgánica y Química Inorgánica, Instituto de Investigación
Química “Andrés M. del Río” (IQAR), 28805, Alcala de
Henares, Madrid, Spain
- Instituto
Ramón y Cajal de Investigación Sanitaria (IRYCIS) 28034, Madrid, Spain
| | - Juan J. Vaquero
- Universidad
de Alcalá, Departamento de Química
Orgánica y Química Inorgánica, Instituto de Investigación
Química “Andrés M. del Río” (IQAR), 28805, Alcala de
Henares, Madrid, Spain
- Instituto
Ramón y Cajal de Investigación Sanitaria (IRYCIS) 28034, Madrid, Spain
| | - Javier Carreras
- Universidad
de Alcalá, Departamento de Química
Orgánica y Química Inorgánica, Instituto de Investigación
Química “Andrés M. del Río” (IQAR), 28805, Alcala de
Henares, Madrid, Spain
- Instituto
Ramón y Cajal de Investigación Sanitaria (IRYCIS) 28034, Madrid, Spain
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5
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Wu JH, Tan JP, Zheng JY, He J, Song Z, Su Z, Wang T. Towards Axially Chiral Pyrazole-Based Phosphorus Scaffolds by Dipeptide-Phosphonium Salt Catalysis. Angew Chem Int Ed Engl 2023; 62:e202215720. [PMID: 36694276 DOI: 10.1002/anie.202215720] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 01/26/2023]
Abstract
Given the comparatively lower rotational barriers, the catalytic asymmetric construction of axially chiral biaryl structures, especially those containing a five-membered heterocycle, still remains a challenge. Herein, we described a general and modular protocol to access atropisomeric arylpyrazole scaffolds containing a phosphorus unit by a dipeptide phosphonium salt catalyzed reaction involving an oxidative central-to-axial chirality conversion. This reaction features excellent yields and enantioselectivities, broad substrate scope, and a low catalyst loading, delivering axially chiral phosphine compounds.
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Affiliation(s)
- Jia-Hong Wu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Jian-Ping Tan
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China.,Hunan Province Key Laboratory of Environmental Catalysis and Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, 411104, P. R. China
| | - Jia-Yan Zheng
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Jiajia He
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Zhenlei Song
- West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China
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6
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Feng Y, Chang B, Ren Y, Zhao F, Wang KH, Wang J, Huang D, Lv X, Hu Y. Synthesis of trifluoromethylpyrrolopyrazole derivatives via [3+2] cycloaddition of trifluoromethyl N-acylhydrazones or trifluoroacetohydrazonoyl bromides with maleimides. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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7
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Zhou Y, Pang T, Liu Y, Zhong F, Wu G. Iodine-Mediated Coupling of 2,2,2-Trifluorodiazoethane and Alkynes To Access Bistrifluoromethylated 1,3,5-Trienes. Org Lett 2023; 25:538-542. [PMID: 36652331 DOI: 10.1021/acs.orglett.2c04297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Multi-component reaction of higher degree ultilization of diazo molecules for polyene formation is highly intriuging but still underexplored. We present herein an unprecedented coupling of 2,2,2-trifluorodiazoethane and aryl alkynes mediated by iodine under visible light. The multi-component reaction involving two diazo units and two alkyne units provides a straightforward and step-economic access to bistrifluoromethylated 1,3,5-trienes in high stereoselectivity by creation of three C═C bonds in a single step under mild conditions.
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Affiliation(s)
- Yangjinxiu Zhou
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China
| | - Tengfei Pang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China
| | - Yu Liu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China
| | - Fangrui Zhong
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China
| | - Guojiao Wu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China
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8
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Xing CH, Chen WB, Lu L, Xie YB, Liu XD, Zhang MX. A Convenient Synthesis of 5-Trifluoromethyl-5-cyclopropyl-Substituted Pyrazolines. HETEROCYCLES 2023. [DOI: 10.3987/com-23-14815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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9
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Zhang Y, Zeng JL, Chen Z, Wang R. Base-Promoted (3 + 2) Cycloaddition of Trifluoroacetohydrazonoyl Chlorides with Imidates En Route to Trifluoromethyl-1,2,4-Triazoles. J Org Chem 2022; 87:14514-14522. [PMID: 36264227 DOI: 10.1021/acs.joc.2c01926] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A base-mediated (3 + 2) cycloaddition of trifluoroacetohydrazonoyl chlorides with imidates for the construction of 3-trifluoromethyl-1,2,4-triazoles has been described. This reaction is characterized by readily starting materials, simple reaction conditions, good yields, a broad substrate scope, and excellent regioselectivity. The utility of this protocol has been validated by the synthesis of a drug-like molecule.
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Affiliation(s)
- Yue Zhang
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, the Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Jun-Liang Zeng
- School of Chemistry and Chemical Engineering, Xuchang University, Henan 461000, China
| | - Zhen Chen
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, Nanjing Forestry University, Nanjing 210037, Jiangsu, China
| | - Ren Wang
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, the Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
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10
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11
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Ma Z, Deng Y, He J, Cao S. Solvent-controlled base-free synthesis of bis(trifluoromethyl)-cyclopropanes and -pyrazolines via cycloaddition of 2-trifluoromethyl-1,3-enynes with 2,2,2-trifluorodiazoethane. Org Biomol Chem 2022; 20:5071-5075. [PMID: 35704947 DOI: 10.1039/d2ob00894g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A highly efficient solvent-controlled synthesis of bis(trifluoromethyl)cyclopropanes and bis(trifluoromethyl)pyrazolines via a [2 + 1] or [3 + 2] cycloaddition reaction of 2-trifluoromethyl-1,3-conjugated enynes with CF3CHN2 was developed. The reactions of 2-trifluoromethyl-1,3-conjugated enynes with CF3CHN2 proceeded smoothly under transition-metal and base-free conditions, affording the expected cycloaddition products in good to excellent yields. When DMAc (N,N-dimethylacetamide) was used as the solvent, bis(trifluoromethyl)pyrazolines were obtained; however, in contrast, bis(trifluoromethyl)cyclopropanes were formed by changing the solvent from DMAc to DCE (1,2-dichloroethane).
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Affiliation(s)
- Zhihong Ma
- Biotalk Company Limited, Shanghai, 200090, China
| | - Yupian Deng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China.
| | - Jingjing He
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China.
| | - Song Cao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China.
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12
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Yamanushkin P, Kaya K, Feliciano MAM, Gold B. SuFExable NH-Pyrazoles via 1,3-Dipolar Cycloadditions of Diazo Compounds with Bromoethenylsulfonyl Fluoride. J Org Chem 2022; 87:3868-3873. [PMID: 35143195 DOI: 10.1021/acs.joc.1c03105] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
"Click" reactions have transformed the molecular sciences. Augmenting cycloaddition reactions, sulfur(VI) fluoride exchange (SuFEx) chemistry has diversified the landscape of molecular assembly. Herein, we report a facile strategy to access SuFExable NH-pyrazoles via strain and catalyst-free 1,3-dipolar cycloadditions of stabilized diazo compounds under mild conditions. Subsequent SuFEx proceeds efficiently with various N- and O-nucleophiles. Access to SuFExable NH-pyrazoles─a class of compounds containing two common pharmacophores─enables future opportunities within drug discovery, chemical biology, materials chemistry, and related fields.
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Affiliation(s)
- Pavel Yamanushkin
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Kemal Kaya
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States.,Department of Biochemistry, Kütahya Dumlupınar University, 43100 Kütahya, Turkey
| | - Mark Aldren M Feliciano
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Brian Gold
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
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13
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Fang Z, Jin Q, Wang X, Ning Y. Metal-free [2 + 1 + 3] Cycloaddition of Trifluoroacetaldehyde N-Sulfonylhydrazones with Hexahydro-1,3,5-triazines Leading to Trifluoromethylated 2,3,4,5-Tetrahydro-1,2,4-triazines. J Org Chem 2022; 87:2966-2974. [PMID: 35133818 DOI: 10.1021/acs.joc.1c02810] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A transition-metal-free [2 + 1 + 3] cycloaddition of trifluoroacetaldehyde N-sulfonylhydrazone and hexahydro-1,3,5-triazine was described. This operationally simple protocol provides a general synthesis of diverse trifluoromethylated 2,3,4,5-tetrahydro-1,2,4-triazines in 81-97% yield with a broad substrate scope, including aryl, benzyl, and alkyl hexahydro-1,3,5-triazine.
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Affiliation(s)
- Zhongxue Fang
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Qihao Jin
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Xinyu Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yongquan Ning
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
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14
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[3+2] Cycloaddition reactions of 1-substituted 3,3,3-trifluoropropenes with diazo compounds and nitrilimines – synthesis of pyrazolines and pyrazoles. Chem Heterocycl Compd (N Y) 2022. [DOI: 10.1007/s10593-021-03029-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Expanding 1,2,4-triketone toolbox for use as fluorinated building blocks in the synthesis of pyrazoles, pyridazinones and β-diketohydrazones. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2021.109932] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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16
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Kumar A, Khan WA, Ahamad S, Mohanan K. Trifluorodiazoethane: A versatile building block to access trifluoromethylated heterocycles. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anuj Kumar
- Medicinal and Process Chemistry Division CSIR‐Central Drug Research Institute Lucknow India
| | | | - Shakir Ahamad
- Department of Chemistry Aligarh Muslim University Aligarh India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division CSIR‐Central Drug Research Institute Lucknow India
- Medicinal and Process Chemistry Division Academy of Scientific and Innovative Research Ghaziabad India
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17
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Zhao Z, Ou Z, Kalita SJ, Cheng F, Huang Q, Gu Y, Wang Y, Zhao Y, Huang Y. Stereoconvergent and stepwise 1,3-dipolar cycloadditions of nitrile oxides and nitrile imines. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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18
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Grygorenko OO, Volochnyuk DM, Vashchenko BV. Emerging Building Blocks for Medicinal Chemistry: Recent Synthetic Advances. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100857] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Oleksandr O. Grygorenko
- Enamine Ltd. Chervonotkatska 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Dmitriy M. Volochnyuk
- Enamine Ltd. Chervonotkatska 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
- Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska Street 5 Kyiv 02094 Ukraine
| | - Bohdan V. Vashchenko
- Enamine Ltd. Chervonotkatska 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
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19
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20
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Zhong T, Chen Z, Yi J, Lu G, Weng J. Recent progress in the synthesis of sulfonyl fluorides for SuFEx click chemistry. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.03.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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21
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Su Y, Dong K, Zheng H, Doyle MP. Generation of Diazomethyl Radicals by Hydrogen Atom Abstraction and Their Cycloaddition with Alkenes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105472] [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)
- Yong‐Liang Su
- Department of Chemistry The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| | - Kuiyong Dong
- Department of Chemistry The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| | - Haifeng Zheng
- Department of Chemistry The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| | - Michael P. Doyle
- Department of Chemistry The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
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22
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Chen YJ, Zhang FG, Ma JA. Zinc-Enabled Annulation of Trifluorodiazoethane with 2 H-Azirines to Construct Trifluoromethyl Pyrazolines, Pyrazoles, and Pyridazines. Org Lett 2021; 23:6062-6066. [PMID: 34319752 DOI: 10.1021/acs.orglett.1c02139] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A diethylzinc-promoted unconventional annulation reaction of 2,2,2-trifluorodiazoethane with 2H-azirines is described. This transformation involves two [3 + 2] cycloaddition steps and one dinitrogen extrusion process in one pot, thus giving a broad array of 3-trifluoromethyl pyrazolines in good yields with excellent diastereoselectivities. Further transformations provide facile access to 3-trifluoromethyl pyrazoles and 3,5-ditrifluoromethyl pyridazines with good efficiency.
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Affiliation(s)
- Yue-Ji Chen
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Frontiers Science Center for Synthetic Biology (Ministry of Education), and Tianjin Collaborative Innovation Center of Chemical Science & Engineering, Tianjin University, Tianjin 300072, P. R. China.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, P. R. 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 Center of Chemical Science & Engineering, Tianjin University, Tianjin 300072, P. R. China.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, P. R. 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 Center of Chemical Science & Engineering, Tianjin University, Tianjin 300072, P. R. China.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, P. R. China
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23
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Kumar A, Dhami A, Fairoosa J, Kant R, Mohanan K. Silver-Catalyzed Direct Synthesis of Trifluoromethylated Enaminopyridines and Isoquinolinones Employing Trifluorodiazoethane. Org Lett 2021; 23:5815-5820. [PMID: 34264078 DOI: 10.1021/acs.orglett.1c01969] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This Letter reports a Ag-catalyzed three-component approach for the N-alkenylation of 2-aminopyridines employing aldehydes and trifluorodiazoethane. Unlike the known reactions of trifluorodiazoethane with imines, which generate Mannich adducts, aziridines, or triazolines depending on the substrates and conditions, this reaction, after Mannich addition, proceeds via a carbene formation and 1,2-aryl migration sequence to afford (E)-enaminopyridines. This surprising selectivity, which is effective for a wide range of aldehydes and 2-aminopyridines, has been subsequently explored to access trifluoromethylated isoquinolinones.
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Affiliation(s)
| | | | | | | | - Kishor Mohanan
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India
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24
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Su YL, Dong K, Zheng H, Doyle MP. Generation of Diazomethyl Radicals by Hydrogen Atom Abstraction and Their Cycloaddition with Alkenes. Angew Chem Int Ed Engl 2021; 60:18484-18488. [PMID: 34043866 DOI: 10.1002/anie.202105472] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/23/2021] [Indexed: 12/16/2022]
Abstract
A general catalytic methodology for the synthesis of pyrazolines from α-diazo compounds and conjugated alkenes is reported. The direct hydrogen atom transfer (HAT) process of α-diazo compounds promoted by the tert-butylperoxy radical generates electrophilic diazomethyl radicals, thereby reversing the reactivity of the carbon atom attached with the diazo group. The regiocontrolled addition of diazomethyl radicals to carbon-carbon double bonds followed by intramolecular ring closure on the terminal diazo nitrogen and tautomerization affords a diverse set of pyrazolines in good yields with excellent regioselectivity. This strategy overcomes the limitations of electron-deficient alkenes in traditional dipolar [3+2]-cycloaddition of α-diazo compounds with alkenes. Furthermore, the straightforward formation of the diazomethyl radicals provides umpolung reactivity, thus opening new opportunities for the versatile transformations of diazo compounds.
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Affiliation(s)
- Yong-Liang Su
- Department of Chemistry, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249, USA
| | - Kuiyong Dong
- Department of Chemistry, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249, USA
| | - Haifeng Zheng
- Department of Chemistry, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249, USA
| | - Michael P Doyle
- Department of Chemistry, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249, USA
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25
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Tian Y, Li J, Zhang F, Ma J. Regioselective Decarboxylative Cycloaddition Route to Fully Substituted 3‐CF
3
‐Pyrazoles from Nitrilimines and Isoxazolidinediones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100091] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yu‐Chen 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
| | - Jun‐Kuan Li
- 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
| | - 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
- 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
- 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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26
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Mei H, Wang L, Pajkert R, Wang Q, Xu J, Liu J, Röschenthaler GV, Han J. In Situ Generation of Unstable Difluoromethylphosphonate-Containing Diazoalkanes and Their Use in [3 + 2] Cycloaddition Reactions with Vinyl Sulfones. Org Lett 2021; 23:1130-1134. [PMID: 33480704 DOI: 10.1021/acs.orglett.1c00150] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A [3 + 2] cycloaddition reaction of unstable difluoromethylphosphonate-containing diazoalkanes with vinyl sulfones under simple reaction conditions is developed, which provides an efficient route toward functionalized fluorinated pyrazolines derivatives in good chemical yields. The difluoro diazoalkanes are generated in situ using t-BuONO for the diazotization of (β-amino-α,α-difluoroethyl)phosphonates, and their stabilities and reactivities were carefully investigated.
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Affiliation(s)
- Haibo Mei
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Li Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Romana Pajkert
- Department of Life Sciences and Chemistry, Jacobs University Bremen gGmbH, Campus Ring 1, 28759 Bremen, Germany
| | - Qian Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jingcheng Xu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jiang Liu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Gerd-Volker Röschenthaler
- Department of Life Sciences and Chemistry, Jacobs University Bremen gGmbH, Campus Ring 1, 28759 Bremen, Germany
| | - Jianlin Han
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
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27
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Zeng H, Fang X, Yang Z, Zhu C, Jiang H. Regioselective Synthesis of 5-Trifluoromethylpyrazoles by [3 + 2] Cycloaddition of Nitrile Imines and 2-Bromo-3,3,3-trifluoropropene. J Org Chem 2021; 86:2810-2819. [PMID: 33423498 DOI: 10.1021/acs.joc.0c02765] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A general and practical method for the synthesis of 5-trifluoromethylpyrazoles is reported that occurs by the coupling of hydrazonyl chlorides with environmentally friendly and large-tonnage industrial feedstock 2-bromo-3,3,3-trifluoropropene (BTP). This exclusively regioselective [3 + 2] cycloaddition of nitrile imines and with BTP is catalyst-free and operationally simple and features mild conditions, high yields, gram-scalable, a broad substrate scope, and valuable functional group tolerance. Significantly, our method has been applied for the synthesis of the key intermediate of an active agonist of sphingosine 1-phosphate receptor.
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Affiliation(s)
- Hao Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiaojie Fang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhiyi Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Chuanle Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.,National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huaian 223003, People's Republic of China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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28
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Affiliation(s)
- Pavel K. Mykhailiuk
- Enamine Ltd., Chervonotkatska 78, 02094 Kyiv, Ukraine
- Chemistry Department, Taras Shevchenko National University of Kyiv, Volodymyrska 64, 01601 Kyiv, Ukraine
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29
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Li C, Zhang X, He J, Xu S, Cao S. Et
3
N‐Catalyzed
Cycloaddition Reactions of α‐(Trifluoromethyl)styrenes with 2,2,
2‐Trifluorodiazoethane
to Access Bis(trifluoromethyl)‐Substituted Pyrazolines. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000480] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Chunmei Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology Shanghai 200237 China
| | - Xuxue Zhang
- College of Chemistry and Chemical Engineering, Qilu Normal University Jinan Shandong 250200 China
| | - Jingjing He
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology Shanghai 200237 China
| | - Sixue Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology Shanghai 200237 China
| | - Song Cao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology Shanghai 200237 China
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30
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Meng X, Yang M, Peng J, Zhao Y. Silver‐Catalyzed Three‐Component Coupling Reaction of Amines, 2‐Isocyanobenzaldehydes, and 2,2,2‐Trifluorodiazoethane and Synthesis of Trifluoromethyl‐Substituted Indolo[1,2‐
c
]quinazolines. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000957] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xiang‐He Meng
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Faculty of Chemistry Northeast Normal University Changchun 130024 People's Republic of China
| | - Ming Yang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Faculty of Chemistry Northeast Normal University Changchun 130024 People's Republic of China
| | - Ju‐Yin Peng
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Faculty of Chemistry Northeast Normal University Changchun 130024 People's Republic of China
| | - Yu‐Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Faculty of Chemistry Northeast Normal University Changchun 130024 People's Republic of China
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31
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Affiliation(s)
- Pavel K. Mykhailiuk
- Enamine Ltd., Chervonotkatska 78, 02094 Kyiv, Ukraine
- Chemistry Department, Taras Shevchenko National University of Kyiv, Volodymyrska 64, 01601 Kyiv, Ukraine
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32
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Tairov MA, Levchenko V, Stadniy IA, Dmytriv YV, Dehtiarov SO, Kibalnyi MO, Melnyk AV, Veselovych SY, Borodulin YV, Kolotilov SV, Ryabukhin SV, Volochnyuk DM. Practical Synthetic Method for Functionalized 1-Methyl-3/5-(trifluoromethyl)-1H-pyrazoles. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00300] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Maxim A. Tairov
- Enamine Ltd., 78 Chervonotkatska Street, Kyiv 02094, Ukraine
| | | | - Ivan A. Stadniy
- Enamine Ltd., 78 Chervonotkatska Street, Kyiv 02094, Ukraine
| | - Yurii V. Dmytriv
- Enamine Ltd., 78 Chervonotkatska Street, Kyiv 02094, Ukraine
- National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 37 Peremohy Avenue, Kyiv 03056, Ukraine
| | | | | | - Anton V. Melnyk
- Enamine Ltd., 78 Chervonotkatska Street, Kyiv 02094, Ukraine
| | | | | | - Sergey V. Kolotilov
- L. V. Pisarzhevskii Institute of Physical Chemistry of the National Academy of Sciences of Ukraine, Prospekt Nauki 31, Kyiv 03028, Ukraine
| | - Sergey V. Ryabukhin
- Enamine Ltd., 78 Chervonotkatska Street, Kyiv 02094, Ukraine
- Taras Shevchenko National University of Kyiv, 60 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Dmitriy M. Volochnyuk
- Enamine Ltd., 78 Chervonotkatska Street, Kyiv 02094, Ukraine
- Taras Shevchenko National University of Kyiv, 60 Volodymyrska Street, Kyiv 01601, Ukraine
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska Street, Kyiv 02660, Ukraine
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33
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Li C, Zheng Y, Rakesh KP, Qin HL. But-3-ene-1,3-disulfonyl difluoride (BDF): a highly selective SuFEx clickable hub for the quick assembly of sultam-containing aliphatic sulfonyl fluorides. Chem Commun (Camb) 2020; 56:8075-8078. [PMID: 32542267 DOI: 10.1039/d0cc03248d] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A versatile selectively addressable SuFEx click chemistry hub, but-3-ene-1,3-disulfonyl difluoride (BDF) was designed and synthesized through head-to-tail dimerization of ethenesulfonyl fluoride (ESF). BDF possesses three active sites to selectively participate in the construction of 4-membered, 5-membered and 6-membered cyclic sulfonamide (sultams) bearing aliphatic sulfonyl fluoride moieties for further manipulations in a fast, efficient and practical manner.
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Affiliation(s)
- Chen Li
- State Key Laboratory of Silicate Materials for Architectures, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China.
| | - Yujie Zheng
- State Key Laboratory of Silicate Materials for Architectures, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China.
| | - K P Rakesh
- State Key Laboratory of Silicate Materials for Architectures, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China.
| | - Hua-Li Qin
- State Key Laboratory of Silicate Materials for Architectures, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China.
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34
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Javed, Mandal PK. Metal-free [3+2] cycloaddition of glycosyl olefinic ester with in situ generated CF 3CHN 2: Access to CF 3-substituted pyrazoline glycoconjugates. Carbohydr Res 2020; 495:108080. [PMID: 32679339 DOI: 10.1016/j.carres.2020.108080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 06/10/2020] [Accepted: 06/12/2020] [Indexed: 11/26/2022]
Abstract
An efficient [3 + 2] cycloaddition of glycosyl olefinic ester with in situ generated CF3CHN2 for the syntheses of CF3-substituted pyrazoline glycoconjugate has been developed. This mild, one-pot reaction condition avoiding the use of metallic catalyst and additive will be useful in the pharmaceutical industry. This reaction features are the broad substrate scope, good functional group tolerance with good to high yields.
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Affiliation(s)
- Javed
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226 031, India
| | - Pintu Kumar Mandal
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226 031, India; Academy of Scientific and Innovative Research, New Delhi, 110001, India.
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35
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Neto JSS, Zeni G. Alkynes and Nitrogen Compounds: Useful Substrates for the Synthesis of Pyrazoles. Chemistry 2020; 26:8175-8189. [PMID: 31990413 DOI: 10.1002/chem.201905276] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/24/2020] [Indexed: 02/06/2023]
Abstract
The easy preparation and functionalization of pyrazoles associated with their innumerable biological properties have made this class of N-heterocycles very attractive for the development of new synthetic routes and applications. The cyclization reactions of alkynes and nitrogen compounds represent a powerful tool for the preparation of pyrazoles. This Review covers the recent advances in the preparation of pyrazoles by reacting alkynes and nitrogen compounds under transition-metal-catalyzed or metal-free conditions.
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Affiliation(s)
- Jose S S Neto
- Department of Biochemistry and Molecular Biology Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNE, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Gilson Zeni
- Department of Biochemistry and Molecular Biology Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNE, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
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36
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Li J, Zhang D, Chen J, Ma C, Hu W. Enantioselective Synthesis of Fluoroalkyl-Substituted syn-Diamines by the Asymmetric gem-Difunctionalization of 2,2,2-Trifluorodiazoethane. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00972] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiuling Li
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- School Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Dan Zhang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Jianghui Chen
- School Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Chaoqun Ma
- School Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Wenhao Hu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- School Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
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37
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Jamali MF, Gupta E, Kumar A, Kant R, Mohanan K. Ag-Catalyzed Trifluoromethylative Ring Expansion of Isatins and Isatin Ketimines with Trifluorodiazoethane. Chem Asian J 2020; 15:757-761. [PMID: 32017397 DOI: 10.1002/asia.201901799] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/03/2020] [Indexed: 01/06/2023]
Abstract
A general method for the construction of trifluoromethylated 2-quinolinones has been established herein by using a trifluoromethylative ring expansion of isatin with trifluorodiazoethane. The strategy provides a platform for the rapid synthesis of a wide range of substituted 3-hydroxy-4-trifluoromethyl-2-quinolinones. This operationally simple and robust Ag-catalyzed protocol successfully transforms isatin ketimines to 3-amino-4-trifluoromethylquinolinones in excellent yields. The utility of this novel method is further illustrated by the conversion of the products into various synthetically and medicinally relevant molecules.
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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, 110025, New Delhi, India
| | - Ekta Gupta
- 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.,Academy of Scientific and Innovative Research, 110025, New Delhi, India
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38
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Wang H, Ning Y, Sun Y, Sivaguru P, Bi X. Cycloaddition of Trifluoroacetaldehyde N-Triftosylhydrazone (TFHZ-Tfs) with Alkynes for Synthesizing 3-Trifluoromethylpyrazoles. Org Lett 2020; 22:2012-2016. [DOI: 10.1021/acs.orglett.0c00395] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Hongwei Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yongquan Ning
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yue Sun
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Paramasivam Sivaguru
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Xihe Bi
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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39
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Xu Y, Chen Q, Tian Y, Wu W, You Y, Weng Z. Silver-catalyzed synthesis of 5-aryl-3-trifluoromethyl pyrazoles. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151455] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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40
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Hryschuk OV, Yurov Y, Tymtsunik AV, Kovtunenko VO, Komarov IV, Grygorenko OO. Multigram Synthesis and C−C/C−N Couplings of Functionalized 1,2‐Disubstituted Cyclopropyltrifluoroborates. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900879] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Oleksandr V. Hryschuk
- Enamine Ltd. (www.enamine.net) Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Yevhen Yurov
- Enamine Ltd. (www.enamine.net) Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | | | | | - Igor V. Komarov
- Enamine Ltd. (www.enamine.net) Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Oleksandr O. Grygorenko
- Enamine Ltd. (www.enamine.net) Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
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41
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Yagupolskii YL, Pavlenko NV, Gerus II, Peng S, Nappa M. 1,1,1,4,4,4‐Hexafluorobut‐2‐yne (HFB) as a Versatile Dipolarophile for [3+2] Cycloaddition with 1,3‐Dipoles toward Azoles with Adjacent CF
3
Groups. ChemistrySelect 2019. [DOI: 10.1002/slct.201900387] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yurii L. Yagupolskii
- Institute of Organic ChemistryNational Academy of Sciences of Ukraine Murmanska St. 5 Kiev 02660 Ukraine
| | - Natalia V. Pavlenko
- Institute of Organic ChemistryNational Academy of Sciences of Ukraine Murmanska St. 5 Kiev 02660 Ukraine
| | - Igor I. Gerus
- Institute of Bioorganic Chemistry and PetrochemistryNational Academy of Sciences of Ukraine Murmanska St. 1 Kiev 02660 Ukraine
| | - Sheng Peng
- The Chemours Company Experimental Station. Bldg. 262 Wilmington, De 19880 United States
| | - Mario Nappa
- The Chemours Company Experimental Station. Bldg. 262 Wilmington, De 19880 United States
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42
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Chen Z, Ren N, Ma X, Nie J, Zhang FG, Ma JA. Silver-Catalyzed [3 + 3] Dipolar Cycloaddition of Trifluorodiazoethane and Glycine Imines: Access to Highly Functionalized Trifluoromethyl-Substituted Triazines and Pyridines. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00846] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhen Chen
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Nan Ren
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Xiaoxiao Ma
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Jing Nie
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering, Tianjin University, Tianjin 300072, People’s Republic 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, People’s Republic 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, People’s Republic of China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
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43
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Kumar A, Ahamad S, Kant R, Mohanan K. Silver-Catalyzed Three-Component Route to Trifluoromethylated 1,2,3-Triazolines Using Aldehydes, Amines, and Trifluorodiazoethane. Org Lett 2019; 21:2962-2965. [DOI: 10.1021/acs.orglett.9b01159] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | - Shakir Ahamad
- Academy of Scientific and Innovative Research, New Delhi 110001, India
| | | | - Kishor Mohanan
- Academy of Scientific and Innovative Research, New Delhi 110001, India
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44
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Mykhailiuk PK, Koenigs RM. Difluorodiazoethane (CF
2
HCHN
2
): A New Reagent for the Introduction of the Difluoromethyl Group. Chemistry 2019; 25:6053-6063. [DOI: 10.1002/chem.201804953] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 12/07/2018] [Indexed: 01/22/2023]
Affiliation(s)
- Pavel K. Mykhailiuk
- Enamine Ltd. Chervonotkatska 78 02094 Kyiv Ukraine
- Chemistry DepartmentTaras Shevchenko National University of Kyiv Volodymyrska 64 01601 Kyiv Ukraine
| | - Rene M. Koenigs
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
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45
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Yu Y, Zhang Y, Wang Z, Liang YX, Zhao YL. A rhodium-catalyzed three-component reaction of arylisocyanides, trifluorodiazoethane, and activated methylene isocyanides or azomethine ylides: an efficient synthesis of trifluoroethyl-substituted imidazoles. Org Chem Front 2019. [DOI: 10.1039/c9qo00856j] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A novel method for the synthesis of trifluoroethyl-substituted imidazoles is reported via a rhodium-catalyzed three-component reaction of isocyanides, 2,2,2-trifluorodiazoethane and activated methylene isocyanides or azomethine ylides.
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Affiliation(s)
- Yang Yu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Yan Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Zhuo Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Yong-Xin Liang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Yu-Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
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46
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Jayaratna NB, Cowan MG, Parasar D, Funke HH, Reibenspies J, Mykhailiuk PK, Artamonov O, Noble RD, Dias HVR. Low Heat of Adsorption of Ethylene Achieved by Major Solid-State Structural Rearrangement of a Discrete Copper(I) Complex. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810460] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Naleen B. Jayaratna
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX 76019 USA
| | - Matthew G. Cowan
- Department of Chemical and Process Engineering; University of Canterbury; Christchurch 8140 New Zealand
- Department of Chemical and Biological Engineering; University of Colorado Boulder; Boulder CO 80302 USA
| | - Devaborniny Parasar
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX 76019 USA
| | - Hans H. Funke
- Department of Chemical and Biological Engineering; University of Colorado Boulder; Boulder CO 80302 USA
| | - Joseph Reibenspies
- Department of Chemistry; Texas A&M University; College Station TX 77842 USA
| | | | | | - Richard D. Noble
- Department of Chemical and Biological Engineering; University of Colorado Boulder; Boulder CO 80302 USA
| | - H. V. Rasika Dias
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX 76019 USA
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47
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Jayaratna NB, Cowan MG, Parasar D, Funke HH, Reibenspies J, Mykhailiuk PK, Artamonov O, Noble RD, Dias HVR. Low Heat of Adsorption of Ethylene Achieved by Major Solid-State Structural Rearrangement of a Discrete Copper(I) Complex. Angew Chem Int Ed Engl 2018; 57:16442-16446. [DOI: 10.1002/anie.201810460] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Naleen B. Jayaratna
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX 76019 USA
| | - Matthew G. Cowan
- Department of Chemical and Process Engineering; University of Canterbury; Christchurch 8140 New Zealand
- Department of Chemical and Biological Engineering; University of Colorado Boulder; Boulder CO 80302 USA
| | - Devaborniny Parasar
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX 76019 USA
| | - Hans H. Funke
- Department of Chemical and Biological Engineering; University of Colorado Boulder; Boulder CO 80302 USA
| | - Joseph Reibenspies
- Department of Chemistry; Texas A&M University; College Station TX 77842 USA
| | | | | | - Richard D. Noble
- Department of Chemical and Biological Engineering; University of Colorado Boulder; Boulder CO 80302 USA
| | - H. V. Rasika Dias
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX 76019 USA
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48
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Gupta E, Nair SR, Kant R, Mohanan K. Additive-Free Three-Component Synthesis of Spiro-isoxazolidine-oxindoles Employing Trifluorodiazoethane. J Org Chem 2018; 83:14811-14819. [DOI: 10.1021/acs.joc.8b02504] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
| | | | | | - Kishor Mohanan
- Academy of Scientific and Innovative Research, New Delhi 110001, India
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49
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Li Y, Wang H, Su Y, Li R, Li C, Liu L, Zhang J. Phosphine-Catalyzed [3 + 2] Cycloaddition Reaction of α-Diazoacetates and β-Trifluoromethyl Enones: A Facile Access to Multisubstituted 4-(Trifluoromethyl)pyrazolines. Org Lett 2018; 20:6444-6448. [DOI: 10.1021/acs.orglett.8b02757] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yongfeng Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Huamin Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Yuwei Su
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Runchen Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Cao Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Lu Liu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Junliang Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
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50
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Xie MS, Guo Z, Qu GR, Guo HM. Regiodivergent Synthesis of Pyrazolines with a Quaternary Carbon Center via Cycloaddition of Diazoesters to N-Purine-Substituted Allenes. Org Lett 2018; 20:5010-5014. [PMID: 30067368 DOI: 10.1021/acs.orglett.8b02161] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Diversity-oriented synthesis of pyrazoline derivatives that contain a quaternary carbon center has been achieved via the 1,3-dipolar cycloaddition between N-purine-substituted allenes and α-alkyl/aryl diazoesters. Using Pd2(dba)3 as a catalyst, only 1-pyrazoline derivatives are produced in a regioselective manner. When DPPB is used as a catalyst, diverse 1-pyrazolines and 2-pyrazolines are obtained in moderate to good total yields.
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Affiliation(s)
- Ming-Sheng Xie
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China
| | - Zhen Guo
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China
| | - Gui-Rong Qu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China
| | - Hai-Ming Guo
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China
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