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Muzalevskiy VM, Sizova ZA, Panyushkin VV, Chertkov VA, Khrustalev VN, Nenajdenko VG. α,β-Disubstituted CF 3-Enones as a Trifluoromethyl Building Block: Regioselective Preparation of Totally Substituted 3-CF 3-Pyrazoles. J Org Chem 2021; 86:2385-2405. [PMID: 33423495 DOI: 10.1021/acs.joc.0c02516] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An efficient pathway toward a novel class of trifluoromethyl building blocks was elaborated. The reaction of α-CF3-enamines with arylaldehydes resulted in direct synthesis of α,β-diaryl-CF3-enones isolated in up to 93% yield as E-isomers. The possible reaction mechanism was proposed using the Zimmerman-Traxler model. The reaction of α,β-diaryl-CF3-enones with hydrazines opens a novel pathway to trifluoromethylated pyrazolines. Oxidation of pyrazolines with DDQ opened access to totally regioselective preparation of 3-CF3-pyrazoles isolated in high yield. Using this strategy, 4-arylated derivatives of known drugs Celebrex, Mavacoxib, and SC-560 can be synthesized.
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Affiliation(s)
- Vasiliy M Muzalevskiy
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Zoia A Sizova
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Vasiliy V Panyushkin
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Vyacheslav A Chertkov
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia, Moscow 117198, Russia.,N. D. Zelinsky Institute of Organic Chemistry of RAS, 47 Leninsky Prospect, Moscow 119991, Russia
| | - Valentine G Nenajdenko
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
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Sun X, Gong M, Huang M, Li Y, Kim JK, Kovalev V, Shokova E, Wu Y. "One-Pot" Synthesis of γ-Pyrones from Aromatic Ketones/Heteroarenes and Carboxylic Acids. J Org Chem 2020; 85:15051-15061. [PMID: 33147963 DOI: 10.1021/acs.joc.0c01924] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Despite the various attractive properties of γ-pyrones, there are still some deficiencies in their synthetic approaches such as lower atom economy, multistep processes, and prefunctionalization of the reagents. In this work, an efficient and simple (CF3CO)2O/CF3SO3H-mediated "one-pot" approach was realized to produce γ-pyrones by applying aromatic ketones/heteroarenes and carboxylic acids as the starting materials. The target products were isolated in moderate to excellent yields. The reaction mechanism was studied by density functional theory calculational methods. The results of experimental and theoretical investigations not only helped us explain the reason of high selectivity formation of β-diketones but also proved that 1,3,5-ketones might be important intermediates for the cyclization to afford γ-pyrones.
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Affiliation(s)
- Xiangyu Sun
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
| | - Ming Gong
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
| | - Mengmeng Huang
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
| | - Yabo Li
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
| | - Jung Keun Kim
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
| | - Vladimir Kovalev
- Department of Chemistry, Moscow State University, Lenin's Hills, Moscow 119991, Russia
| | - Elvira Shokova
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
| | - Yangjie Wu
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
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Philippov AA, Chibiryaev AM. Meerwein–Ponndorf–Verley–Oppenauer Non-catalytic Reaction of Monoterpenoids in Supercritical Fluids. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2020. [DOI: 10.1134/s1990793119070054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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4
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Ganina TA, Chertkov VA. Dynamic Structure of Organic Compounds in Solution According to NMR Data and Quantum Chemical Calculations: III. Noradrenaline. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2019. [DOI: 10.1134/s107042801903014x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Okuma K, Yamaguchi H, Nagatoshi R, Matsui H, Iwashita H, Nagahora N, Shioji K. Neighboring Group Participation of Thiofenchone with Acyl Chlorides: Novel Formation of 2-Acyloxy-2,7,7-trimethylnorbornan-1-thiols. CHEM LETT 2017. [DOI: 10.1246/cl.170245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kentaro Okuma
- Department of Chemistry, Fukuoka University, Jonan-ku, Fukuoka 814-0180
| | - Hazuki Yamaguchi
- Department of Chemistry, Fukuoka University, Jonan-ku, Fukuoka 814-0180
| | - Risa Nagatoshi
- Department of Chemistry, Fukuoka University, Jonan-ku, Fukuoka 814-0180
| | - Hiroyuki Matsui
- Department of Chemistry, Fukuoka University, Jonan-ku, Fukuoka 814-0180
| | - Hidefumi Iwashita
- Dojindo Laboratories, 2025-5 Tabaaru, Mashiki-machi, Kumamoto 861-2022
| | | | - Kosei Shioji
- Department of Chemistry, Fukuoka University, Jonan-ku, Fukuoka 814-0180
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