1
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Tian D, Chen G, Wang X, Zhang HJ. Modular Access to Functionalized Oxetanes as Benzoyl Bioisosteres. J Am Chem Soc 2024. [PMID: 38905313 DOI: 10.1021/jacs.4c04504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/23/2024]
Abstract
Bioisosterism is a valuable principle exploited in drug discovery to fine-tune physicochemical properties of bioactive compounds. Functionalized 3-aryl oxetanes, as an important class of bioisosteres for benzoyl groups (highly prevalent structures in approved drugs), have been rarely utilized in agrochemicals and pharmaceuticals due to significant synthetic challenges. Here, we present a modular synthetic strategy based on the unexplored yet readily available reagents, oxetanyl trichloroacetimidates, inspired by Schmidt glycosylation, enabling easy access to a library of functionalized oxetanes. This operationally simple protocol leverages the vast existing libraries of aryl halides and various nucleophiles. The power and generality of this approach is demonstrated by late-stage functionalization of complex molecules, as well as the rapid synthesis of oxetane analogues of bioactive molecules and marketed drugs. Preliminary mechanistic study suggests that the oxygen atom in the oxetane ring plays a crucial role in stabilizing the carbocation intermediates.
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Affiliation(s)
- Dayu Tian
- Key Laboratory of Precision and Intelligent Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guang Chen
- Key Laboratory of Precision and Intelligent Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaocheng Wang
- Key Laboratory of Precision and Intelligent Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Hai-Jun Zhang
- Key Laboratory of Precision and Intelligent Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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2
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Poláčková V, Krištofíková D, Némethová B, Górová R, Mečiarová M, Šebesta R. N-Sulfinylpyrrolidine-containing ureas and thioureas as bifunctional organocatalysts. Beilstein J Org Chem 2021; 17:2629-2641. [PMID: 34795800 PMCID: PMC8561142 DOI: 10.3762/bjoc.17.176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 10/14/2021] [Indexed: 11/23/2022] Open
Abstract
The synthesis of bifunctional N-sulfinylureas and thioureas with an appended pyrrolidine unit is presented. These organocatalysts were evaluated in Michael additions of aldehydes to nitroalkenes both under solvent-free conditions and in solution. The N-sulfinylurea catalyst was more efficient than the corresponding thiourea. For some substrates, enantioselectivities reached 98% ee. The stereogenic center on the sulfur did not have a considerable influence on the catalytic reactions. Under ball-milling conditions, the Michael adducts were obtained in good yields but with slightly lower enantiomeric purities than in solution. DFT calculations elucidated its mode of action and confirmed a dual activation mode, which combines enamine activation of aldehydes and hydrogen-bond activation of nitroalkenes.
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Affiliation(s)
- Viera Poláčková
- Department of Organic Chemistry,Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Dominika Krištofíková
- Department of Organic Chemistry,Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Boglárka Némethová
- Department of Organic Chemistry,Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Renata Górová
- Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Mária Mečiarová
- Department of Organic Chemistry,Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry,Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
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3
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Chowdhury R, Dubey AK, Ghosh SK. Organocatalytic Enantioselective Michael Addition of Pyrazol‐5‐ones to β‐Silylmethylene Malonates: Synthesis of Chiral Organosilanes Under Metal‐ free Conditions. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Raghunath Chowdhury
- Bio-Organic Division Bhabha Atomic Research Centre, Trombay Mumbai 400085 India
- Homi Bhabha National Institute Bhabha Atomic Research Centre, Trombay Mumbai 400085 India
| | - Akhil K. Dubey
- Bio-Organic Division Bhabha Atomic Research Centre, Trombay Mumbai 400085 India
| | - Sunil K. Ghosh
- Homi Bhabha National Institute Bhabha Atomic Research Centre, Trombay Mumbai 400085 India
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4
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Zhang Y, Zhang X, Ma S. Stretchable chiral pockets for palladium-catalyzed highly chemo- and enantioselective allenylation. Nat Commun 2021; 12:2416. [PMID: 33893276 PMCID: PMC8065118 DOI: 10.1038/s41467-021-22498-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 03/09/2021] [Indexed: 11/17/2022] Open
Abstract
Pyrazolones are a vital class of heterocycles possessing various biological properties and much attention is paid to the diversified synthesis of enantiopure pyrazolone derivatives. We describe here the development of diphenylphosphinoalkanoic acid based chiral bisphosphine ligands, which are successfully applied to the palladium-catalyzed asymmetric allenylation of racemic pyrazol-5-ones. The reaction affords C-allenylation products, optically active pyrazol-5-ones bearing an allene unit, in high chemo- and enantioselectivity, with DACH-ZYC-Phos-C1 as the best ligand. The synthetic potential of the C-allenylation products is demonstrated. Furthermore, the enantioselectivity observed with DACH-ZYC-Phos-C1 is rationalized by density functional theory studies. Chiral pyrazolone derivatives show promising biological activity in commercial drugs. Here, the authors report an enantioselective allenylation of pyrazolones by fine tuning of Trost’s ligands, which leads to a chiral pocket featuring high efficiency and asymmetric induction in the catalytic process.
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Affiliation(s)
- Yuchen Zhang
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, P. R. China
| | - Xue Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, P. R. China.
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, P. R. China. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, P. R. China.
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5
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Das T, Mohapatra S, Mishra NP, Nayak S, Raiguru BP. Recent Advances in Organocatalytic Asymmetric Michael Addition Reactions to α, β‐Unsaturated Nitroolefins. ChemistrySelect 2021. [DOI: 10.1002/slct.202100679] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tapaswini Das
- Organic Synthesis Laboratory, Department of Chemistry Ravenshaw University Cuttack 753003, Odisha India
| | - Seetaram Mohapatra
- Organic Synthesis Laboratory, Department of Chemistry Ravenshaw University Cuttack 753003, Odisha India
| | - Nilima P. Mishra
- Organic Synthesis Laboratory, Department of Chemistry Ravenshaw University Cuttack 753003, Odisha India
| | - Sabita Nayak
- Organic Synthesis Laboratory, Department of Chemistry Ravenshaw University Cuttack 753003, Odisha India
| | - Bishnu P. Raiguru
- Organic Synthesis Laboratory, Department of Chemistry Ravenshaw University Cuttack 753003, Odisha India
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6
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Cao J, Zhu SF. Catalytic Enantioselective Proton Transfer Reactions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200350] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jin Cao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Shou-Fei Zhu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
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7
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Das S, Hu Q, Kondoh A, Terada M. Enantioselective Protonation: Hydrophosphinylation of 1,1-Vinyl Azaheterocycle N-Oxides Catalyzed by Chiral Bis(guanidino)iminophosphorane Organosuperbase. Angew Chem Int Ed Engl 2021; 60:1417-1422. [PMID: 33030798 DOI: 10.1002/anie.202012492] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Indexed: 12/30/2022]
Abstract
Enantioselective protonation by hydrophosphinylation of diarylphosphine oxides with 2-vinyl azaheterocycle N-oxide derivatives was demonstrated using chiral bis(guanidino)iminophosphorane as the higher-order organosuperbase catalyst. It was confirmed by several control experiments that a chiral weak conjugate acid of the chiral bis(guanidino)iminophosphorane, instead of achiral diarylphosphine oxides, directly functioned as the proton source to afford the corresponding product in a highly enantioselective manner in most cases. Enantioselective protonation by a weak conjugate acid generated from the higher-order organosuperbase would broaden the scope of enantioselective reaction systems because of utilization of a range of less acidic pronucleophiles. This method is highlighted by the valuable synthesis of a series of chiral P,N-ligands for chiral metal complexes through the reduction of phosphine oxide and N-oxide units of the corresponding product without loss of enantiomeric purity.
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Affiliation(s)
- Saikat Das
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Qiupeng Hu
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Azusa Kondoh
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Masahiro Terada
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
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8
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Das S, Hu Q, Kondoh A, Terada M. Enantioselective Protonation: Hydrophosphinylation of 1,1‐Vinyl Azaheterocycle
N
‐Oxides Catalyzed by Chiral Bis(guanidino)iminophosphorane Organosuperbase. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012492] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Saikat Das
- Department of Chemistry Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Qiupeng Hu
- Department of Chemistry Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Azusa Kondoh
- Research and Analytical Center for Giant Molecules Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Masahiro Terada
- Department of Chemistry Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
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9
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Hasanzadeh Esfahani M, Behzad M, Dusek M, Kucerakova M. Synthesis and characterization of a series of acylpyrazolone transition metal complexes: Crystal structures and catalytic performance in the epoxidation of cyclooctene. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119637] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Wojaczyńska E, Wojaczyński J. Modern Stereoselective Synthesis of Chiral Sulfinyl Compounds. Chem Rev 2020; 120:4578-4611. [PMID: 32347719 PMCID: PMC7588045 DOI: 10.1021/acs.chemrev.0c00002] [Citation(s) in RCA: 107] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Indexed: 12/22/2022]
Abstract
Chiral sulfinyl compounds, sulfoxides, sulfoximines, sulfinamides, and other derivatives, play an important role in asymmetric synthesis as versatile auxiliaries, ligands, and catalysts. They are also recognized as pharmacophores found in already marketed and well-sold drugs (e.g., esomeprazole) and used in drug design. This review is devoted to the modern methods of preparation of sulfinyl derivatives in enantiopure or enantiomerically enriched form. Selected new approaches leading to racemic products for which the asymmetric variant can be developed in the future are mentioned as well.
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Affiliation(s)
- Elżbieta Wojaczyńska
- Faculty
of Chemistry, Wrocław University of
Science and Technology, Wybrzeże Wyspiańskiego
27, 50 370 Wrocław, Poland
| | - Jacek Wojaczyński
- Faculty
of Chemistry, University of Wrocław 14 F. Joliot-Curie St., 50 383 Wrocław, Poland
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11
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Ji DS, Luo YC, Hu XQ, Xu PF. Enantioselective Synthesis of Spirorhodanine-Pyran Derivatives via Organocatalytic [3 + 3] Annulation Reactions between Pyrazolones and Rhodanine-Derived Ketoesters. Org Lett 2020; 22:1028-1033. [DOI: 10.1021/acs.orglett.9b04571] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Dong-Sheng Ji
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Yong-Chun Luo
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Xiu-Qin Hu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
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12
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Leng J, Qin HL. SO2F2 mediated transformation of pyrazolones into pyrazolyl fluorosulfates. Org Biomol Chem 2019; 17:5001-5008. [DOI: 10.1039/c9ob00903e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The construction of a class of novel N-heterocyclic molecules containing both pyrazole and fluorosulfate functionalities was achieved through the reactions of pyrazolones with SO2F2 in good to excellent yields.
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Affiliation(s)
- Jing Leng
- State Key Laboratory of Silicate Materials for Architectures
- and School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
| | - Hua-Li Qin
- State Key Laboratory of Silicate Materials for Architectures
- and School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
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13
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Jung HI, Park JH, Kim DY. Enantioselective Organocatalytic Mannich Reaction and Fluorination Sequence of Pyrazolones to Isatin‐derived Ketimines. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11625] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hye Im Jung
- Department of ChemistrySoonchunhyang University Chungnam South Korea
| | - Jin Hwa Park
- Department of ChemistrySoonchunhyang University Chungnam South Korea
| | - Dae Young Kim
- Department of ChemistrySoonchunhyang University Chungnam South Korea
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14
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Luo W, Song D, Fang L, Nian S, Hou H, Ling F, Zhong W. Chiral Bifunctional Ferrocenylphosphine‐Catalyzed Enantioselective Allylic Alkylation of Morita−Baylis−Hillman Carbonates with Pyrazolin‐5‐ones. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800547] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Wenjun Luo
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
| | - Dingguo Song
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
| | - Lu Fang
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
| | - Sanfei Nian
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
| | - Huacui Hou
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
| | - Fei Ling
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
| | - Weihui Zhong
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
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15
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Rana NK, Shukla K, Mahto P, Jha RK, Singh VK. A facile and highly diastereoselective synthesis of carbocyclic spiro-pyrazolones via DABCO catalyzed Michael-Michael domino reaction. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Kim YS, Lee MH, Kim DY. Asymmetric Michael Addition of Pyrazolones to β,γ-Unsaturated α-Keto Esters Catalyzed by Binaphthyl-modified Thiourea. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11425] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- You Sun Kim
- Department of Chemistry; Soonchunhyang University; Soonchunhyang-Ro 22, Chungnam 31538 South Korea
| | - Min Hee Lee
- Department of Chemistry; Soonchunhyang University; Soonchunhyang-Ro 22, Chungnam 31538 South Korea
| | - Dae Young Kim
- Department of Chemistry; Soonchunhyang University; Soonchunhyang-Ro 22, Chungnam 31538 South Korea
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17
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Li SW, Wan Q, Kang Q. Chiral-at-Metal Rh(III) Complex-Catalyzed Michael Addition of Pyrazolones with α,β-Unsaturated 2-Acyl Imidazoles. Org Lett 2018; 20:1312-1315. [PMID: 29446638 DOI: 10.1021/acs.orglett.8b00040] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient enantioselective conjugate addition of pyrazolones with α,β-unsaturated 2-acyl imidazoles catalyzed by chiral-at-metal rhodium complex is reported. The corresponding adducts were obtained in good yields (85%-96%) with excellent enantioselectivities (up to >99%). This protocol exhibits extraordinary reactivity, because of the fact that a complex with as little as 0.05 mol % Rh(III) can catalyze the title reaction on a gram-scale with excellent enantioselectivity.
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Affiliation(s)
- Shi-Wu Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou, 350002, China.,University of Chinese Academy of Sciences , Beijing, 100049, China
| | - Qian Wan
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou, 350002, China
| | - Qiang Kang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou, 350002, China
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18
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Ding R, Wolf C. Organocatalytic Asymmetric Synthesis of α-Oxetanyl and α-Azetidinyl Tertiary Alkyl Fluorides and Chlorides. Org Lett 2018; 20:892-895. [PMID: 29360370 PMCID: PMC5937693 DOI: 10.1021/acs.orglett.8b00039] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Asymmetric thiourea and squaramide catalysis provides access to synthetically versatile α-oxetanyl and α-azetidinyl alkyl halides exhibiting a tetrasubstituted chiral carbon center with high yields and enantioselectivities. The products are readily transformed with negligible erosion of enantiopurity and excellent diastereoselectivity to a diverse group of multifunctional compounds including fluorooxindoles with two contiguous chirality centers, fluorinated heterocyclic spiranes, and polyspiro compounds.
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Affiliation(s)
- Ransheng Ding
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, USA
| | - Christian Wolf
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, USA
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19
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Liu S, Bao X, Wang B. Pyrazolone: a powerful synthon for asymmetric diverse derivatizations. Chem Commun (Camb) 2018; 54:11515-11529. [DOI: 10.1039/c8cc06196c] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This feature article reports recent advances in the asymmetric diverse derivatizations of the pyrazolone scaffold.
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Affiliation(s)
- Siyuan Liu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Xiaoze Bao
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
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20
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Li F, Pei W, Wang J, Liu J, Wang J, Zhang ML, Chen Z, Liu L. Organocatalytic asymmetric synthesis of compounds bearing both isoxazole and pyrazole moieties via 1,6-addition of pyrazol-5-ones to 3-methyl-4-nitro-5-alkenylisoxazoles. Org Chem Front 2018. [DOI: 10.1039/c8qo00084k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Bifunctional thiourea catalyzed 1,6-addition of pyrazol-5-ones to 3-methyl-4-nitro-5-alkenylisoxazoles to provide the desired products in 72–90% yield and 83–94% ee.
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Affiliation(s)
- Feng Li
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Wenlong Pei
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Jingjing Wang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Jie Liu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Juan Wang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Ming-liang Zhang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Zhiming Chen
- School of Chemistry and Materials Science
- Guizhou Normal University
- Guiyang
- People's Republic of China
| | - Lantao Liu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
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21
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Kim YH, Yoon JH, Lee MY, Kim DY. Enantioselective Conjugate Addition of Pyrazolones to Nitroalkenes Catalyzed by Binaphthyl-modified Squaramide Organocatalyst. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11241] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yong Hwan Kim
- Department of Chemistry; Soonchunhyang University; Asan Chungnam 31538 Korea
| | - Ji Hee Yoon
- Department of Chemistry; Soonchunhyang University; Asan Chungnam 31538 Korea
| | - Min Young Lee
- Department of Chemistry; Soonchunhyang University; Asan Chungnam 31538 Korea
| | - Dae Young Kim
- Department of Chemistry; Soonchunhyang University; Asan Chungnam 31538 Korea
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Alonso DA, Baeza A, Chinchilla R, Gómez C, Guillena G, Pastor IM, Ramón DJ. Recent Advances in Asymmetric Organocatalyzed Conjugate Additions to Nitroalkenes. Molecules 2017; 22:E895. [PMID: 28555049 PMCID: PMC6152790 DOI: 10.3390/molecules22060895] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 05/26/2017] [Accepted: 05/26/2017] [Indexed: 11/16/2022] Open
Abstract
The asymmetric conjugate addition of carbon and heteroatom nucleophiles to nitroalkenes is a very interesting tool for the construction of highly functionalized synthetic building blocks. Thanks to the rapid development of asymmetric organocatalysis, significant progress has been made during the last years in achieving efficiently this process, concerning chiral organocatalysts, substrates and reaction conditions. This review surveys the advances in asymmetric organocatalytic conjugate addition reactions to α,β-unsaturated nitroalkenes developed between 2013 and early 2017.
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Affiliation(s)
- Diego A Alonso
- Department of Organic Chemistry and Institute of Organic Synthesis (ISO), Faculty of Sciences, University of Alicante, PO Box 99, 03080 Alicante, Spain.
| | - Alejandro Baeza
- Department of Organic Chemistry and Institute of Organic Synthesis (ISO), Faculty of Sciences, University of Alicante, PO Box 99, 03080 Alicante, Spain.
| | - Rafael Chinchilla
- Department of Organic Chemistry and Institute of Organic Synthesis (ISO), Faculty of Sciences, University of Alicante, PO Box 99, 03080 Alicante, Spain.
| | - Cecilia Gómez
- Department of Organic Chemistry and Institute of Organic Synthesis (ISO), Faculty of Sciences, University of Alicante, PO Box 99, 03080 Alicante, Spain.
| | - Gabriela Guillena
- Department of Organic Chemistry and Institute of Organic Synthesis (ISO), Faculty of Sciences, University of Alicante, PO Box 99, 03080 Alicante, Spain.
| | - Isidro M Pastor
- Department of Organic Chemistry and Institute of Organic Synthesis (ISO), Faculty of Sciences, University of Alicante, PO Box 99, 03080 Alicante, Spain.
| | - Diego J Ramón
- Department of Organic Chemistry and Institute of Organic Synthesis (ISO), Faculty of Sciences, University of Alicante, PO Box 99, 03080 Alicante, Spain.
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Kumar M, Chauhan P, Valkonen A, Rissanen K, Enders D. Asymmetric Synthesis of Functionalized Tricyclic Chromanes via an Organocatalytic Triple Domino Reaction. Org Lett 2017; 19:3025-3028. [DOI: 10.1021/acs.orglett.7b01322] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mukesh Kumar
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Pankaj Chauhan
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Arto Valkonen
- Department
of Chemistry, Nanoscience Center University of Jyvaskyla, 40014 Jyvaskyla, Finland
| | - Kari Rissanen
- Department
of Chemistry, Nanoscience Center University of Jyvaskyla, 40014 Jyvaskyla, Finland
| | - Dieter Enders
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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24
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Enantioselective access to tetrahydropyrano[2,3- c ]pyrazoles via an organocatalytic domino Michael-hydroalkoxylation reaction. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.059] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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25
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Bull JA, Croft RA, Davis OA, Doran R, Morgan KF. Oxetanes: Recent Advances in Synthesis, Reactivity, and Medicinal Chemistry. Chem Rev 2016; 116:12150-12233. [DOI: 10.1021/acs.chemrev.6b00274] [Citation(s) in RCA: 241] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- James A. Bull
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
| | - Rosemary A. Croft
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
| | - Owen A. Davis
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
| | - Robert Doran
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
| | - Kate F. Morgan
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
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26
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Phelan JP, Ellman JA. Conjugate addition-enantioselective protonation reactions. Beilstein J Org Chem 2016; 12:1203-28. [PMID: 27559372 PMCID: PMC4979737 DOI: 10.3762/bjoc.12.116] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 05/31/2016] [Indexed: 12/20/2022] Open
Abstract
The addition of nucleophiles to electron-deficient alkenes represents one of the more general and commonly used strategies for the convergent assembly of more complex structures from simple precursors. In this review the addition of diverse protic and organometallic nucleophiles to electron-deficient alkenes followed by enantioselective protonation is summarized. Reactions are first categorized by the type of electron-deficient alkene and then are further classified according to whether catalysis is achieved with chiral Lewis acids, organocatalysts, or transition metals.
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Affiliation(s)
- James P Phelan
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, CT 06520, USA
| | - Jonathan A Ellman
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, CT 06520, USA
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