1
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Wei J, Xing Y, Ye X, Nguyen B, Wojtas L, Hong X, Shi X. Gold-Catalyzed Amine Cascade Addition to Diyne-Ene: Enantioselective Synthesis of 1,2-Dihydropyridines. Angew Chem Int Ed Engl 2023; 62:e202305409. [PMID: 37167070 PMCID: PMC10524696 DOI: 10.1002/anie.202305409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/10/2023] [Accepted: 05/11/2023] [Indexed: 05/13/2023]
Abstract
With the well-documented chemical and biological applications, piperidine and pyridine are among the most important N-heterocycles, and a new synthetic strategy, especially one with an alternative bond-forming design, is of general interest. Using the gold-catalyzed intermolecular condensation of amine and diyne-ene, we report herein the first example of enantioselective 1,2-dihydropyridine synthesis through a formal [3+2+1] fashion (up to 95 % yield, up to 99 % e.e.).
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Affiliation(s)
- Jingwen Wei
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Yangyang Xing
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, 310027, Hangzhou, China
| | - Xiaohan Ye
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Bao Nguyen
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Xin Hong
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, 310027, Hangzhou, China
| | - Xiaodong Shi
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
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2
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Lin LC, Suresh S, Lin KW, Kavala V, Yao CF. One-Pot Knoevenagel/Imination/6π-Azaelectrocyclization Sequence for the Synthesis of Disubstituted Nicotinonitriles. J Org Chem 2023. [PMID: 37437261 DOI: 10.1021/acs.joc.3c00929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
We report on a copper-catalyzed three-component reaction for the synthesis of disubstituted nicotinonitriles using 3-bromopropenals, benzoylacetonitriles, and ammonium acetate (NH4OAc). The Knoevenagel-type condensation of 3-bromopropenals with benzoylacetonitriles gives δ-bromo-2,4-dienones that contain strategically placed functional groups that react with the ammonia generated in situ to give the corresponding azatrienes. These azatrienes can then be transformed into trisubstituted pyridines under the reaction conditions via a reaction sequence involving 6π-azaelectrocyclization and aromatization.
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Affiliation(s)
- Li-Chun Lin
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Sundaram Suresh
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Kun-Wu Lin
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Veerababurao Kavala
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Ching-Fa Yao
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
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3
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Kolb B, Silva dos Santos D, Krause S, Zens A, Laschat S. Sequential hydrozirconation/Pd-catalyzed cross coupling of acyl chlorides towards conjugated (2 E,4 E)-dienones. Beilstein J Org Chem 2023; 19:176-185. [PMID: 36814450 PMCID: PMC9940601 DOI: 10.3762/bjoc.19.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 02/07/2023] [Indexed: 02/19/2023] Open
Abstract
Dienones are challenging building blocks in natural product synthesis due to their high reactivity and complex synthesis. Based on previous work and own initial results, a new stereospecific sequential hydrozirconation/Pd-catalyzed acylation of enynes with acyl chlorides towards conjugated (2E,4E)-dienones is reported. We investigated a number of substrates with different alkyl and aryl substituents in the one-pot reaction and showed that regardless of the substitution pattern, the reactions lead to the stereoselective formation (≥95% (2E,4E)) of the respective dienones under mild conditions. It was found that enynes with alkyl chains gave higher yields than the corresponding aryl-substituted analogues, whereas the variation of the acyl chlorides did not affect the reaction significantly. The synthetic application is demonstrated by formation of non-natural and natural dienone-containing terpenes such as β-ionone which was available in 4 steps and 6% overall yield.
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Affiliation(s)
- Benedikt Kolb
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Daniela Silva dos Santos
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Sanja Krause
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Anna Zens
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Sabine Laschat
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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4
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Aleksić J, Stojanović M, Bošković J, Baranac-Stojanović M. Solid-state silica gel-catalyzed synthesis of fluorescent polysubstituted 1,4- and 1,2-dihydropyridines. Org Biomol Chem 2023; 21:1187-1205. [PMID: 36648494 DOI: 10.1039/d2ob02119f] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
We present the green, highly atom-economical, solid-state silica gel-catalyzed synthesis of polysubstituted 1,4- and 1,2-dihydropyridines (DHPs) from commercially available materials, amines and ethyl propiolate. The DHP skeleton was assembled by heating the reactants and silica gel in a closed vessel. Aliphatic amines provided 1,4-isomers as the main or only DHP products, but the reactions of aromatic amines yielded a mixture of 1,4- and 1,2-isomers. To the best of our knowledge, this is the first example of the formation of a 1,2-DHP structure by the reaction of an amine with propiolic ester. Addition of 1 mass percent of H2SO4 to silica gel shifted the product distribution to 1,4-DHP as the main or the only isomer obtained. Experimental and theoretical analyses led to the identification of two key intermediates en route to DHPs and the explanation of the observed regioisomeric ratios. 1,2-DHPs show blue-cyan fluorescence in MeOH with the quantum yield Φ = 0.10-0.22 relative to quinine sulfate Φ = 0.58 and 1,4-DHPs show blue-violet fluorescence with Φ = 0.09-0.81.
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Affiliation(s)
- Jovana Aleksić
- University of Belgrade - Institute of Chemistry, Technology and Metallurgy - Center for Chemistry, Njegoševa 12, P.O.Box 473, 11000 Belgrade, Serbia.
| | - Milovan Stojanović
- University of Belgrade - Institute of Chemistry, Technology and Metallurgy - Center for Chemistry, Njegoševa 12, P.O.Box 473, 11000 Belgrade, Serbia.
| | - Jakša Bošković
- University of Belgrade - Faculty of Chemistry, Studentski trg 12-16, P.O.Box 158, 11000 Belgrade, Serbia.
| | - Marija Baranac-Stojanović
- University of Belgrade - Faculty of Chemistry, Studentski trg 12-16, P.O.Box 158, 11000 Belgrade, Serbia.
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5
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Synthesis of alkynyl Z-ketimines and their application in amine-catalyzed asymmetric Mannich reactions and conjugate addition. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132225] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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6
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Mu BS, Cui XY, Zeng XP, Yu JS, Zhou J. Modular synthesis of chiral 1,2-dihydropyridines via Mannich/Wittig/cycloisomerization sequence that internally reuses waste. Nat Commun 2021; 12:2219. [PMID: 33833227 PMCID: PMC8032725 DOI: 10.1038/s41467-021-22374-y] [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: 01/15/2021] [Accepted: 03/05/2021] [Indexed: 12/18/2022] Open
Abstract
1,2-Dihydropyridines are valuable and reactive synthons, and particularly useful precursors to synthesize piperidines and pyridines that are among the most common structural components of pharmaceuticals. However, the catalytic enantioselective synthesis of structurally diverse 1,2-dihydropyridines is limited to enantioselective addition of nucleophiles to activated pyridines. Here, we report a modular organocatalytic Mannich/Wittig/cycloisomerization sequence as a flexible strategy to access chiral 1,2-dihydropyridines from N-Boc aldimines, aldehydes, and phosphoranes, using a chiral amine catalyst. The key step in this protocol, cycloisomerization of chiral N-Boc δ-amino α,β-unsaturated ketones recycles the waste to improve the yield. Specifically, recycling by-product water from imine formation to gradually release the true catalyst HCl via hydrolysis of SiCl4, whilst maintaining a low concentration of HCl to suppress side reactions, and reusing waste Ph3PO from the Wittig step to modulate the acidity of HCl. This approach allows facile access to enantioenriched 2-substituted, 2,3- or 2,6-cis-disubstituted, and 2,3,6-cis-trisubstituted piperidines.
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Affiliation(s)
- Bo-Shuai Mu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai, 200062, China
| | - Xiao-Yuan Cui
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai, 200062, China
| | - Xing-Ping Zeng
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai, 200062, China
| | - Jin-Sheng Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai, 200062, China. .,Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, China.
| | - Jian Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai, 200062, China. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, Shanghai, 200032, China.
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7
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Tracy JS, Kalnmals CA, Toste FD. Beyond Allylic Alkylation: Applications of Trost Chemistry in Complex Molecule Synthesis. Isr J Chem 2021. [DOI: 10.1002/ijch.202000103] [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)
- Jacob S. Tracy
- Dept. of Chemistry University of California, Berkeley MC 1460 Berkeley CA 94720 USA
| | | | - F. Dean Toste
- Dept. of Chemistry University of California, Berkeley MC 1460 Berkeley CA 94720 USA
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8
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Ding R, Fu JM, Tian HY, Chen NS, Liu L, Guo Y, Wang PL. Sulfonyl radical-induced regioselective cyclization of 3-aza-1,5-enynes with sulfonyl chlorides to produce 1,2-dihydropyridines by copper catalysis. NEW J CHEM 2021. [DOI: 10.1039/d1nj01821c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A Cu-catalyzed regioselective cyclization of 3-aza-1,5-enynes with sulfonyl chlorides for the synthesis of 1,2-dihydropyridines is described.
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Affiliation(s)
- Ran Ding
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- P. R. China
| | - Jian-Ming Fu
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- P. R. China
| | - Hai-Yu Tian
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- P. R. China
| | - Nian-Shou Chen
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- P. R. China
| | - Lei Liu
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- P. R. China
| | - Yu Guo
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- P. R. China
| | - Pei-Long Wang
- School of Chemistry and Materials Science
- Huaibei Normal University
- Huaibei
- P. R. China
- Information College
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9
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Mu BS, Zhang ZH, Wu WB, Yu JS, Zhou J. Recent Advances in Synthesis of Chiral 1,2-Dihydropyridines. ACTA CHIMICA SINICA 2021. [DOI: 10.6023/a21040131] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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10
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Huang Y, Liao J, Wang W, Liu H, Guo H. Synthesis of heterocyclic compounds through nucleophilic phosphine catalysis. Chem Commun (Camb) 2020; 56:15235-15281. [PMID: 33320123 DOI: 10.1039/d0cc05699e] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Nucleophilic phosphine catalysis is a practical and powerful tool for the synthesis of various heterocyclic compounds with the advantages of environmentally friendly, metal-free, and mild reaction conditions. The present report summarizes the construction of four to eight-membered heterocyclic compounds containing nitrogen, oxygen and sulphur atoms through phosphine-catalyzed intramolecular annulations and intermolecular [2+2], [3+2], [4+1], [3+1+1], [5+1], [4+2], [2+2+2], [3+3], [4+3] and [3+2+3] annulations of electron-deficient alkenes, allenes, alkynes and Morita-Baylis-Hillman carbonates.
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Affiliation(s)
- Yifan Huang
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China.
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11
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Homma C, Takeshima A, Kano T, Maruoka K. Construction of chiral α- tert-amine scaffolds via amine-catalyzed asymmetric Mannich reactions of alkyl-substituted ketimines. Chem Sci 2020; 12:1445-1450. [PMID: 34163907 PMCID: PMC8179053 DOI: 10.1039/d0sc05269h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Stereoselective Mannich reactions of aldehydes with ketimines provide chiral β-amino aldehydes that bear an α-tert-amine moiety. However, the structural variation of the ketimines is limited due to the formation of inseparable E/Z isomers, low reactivity, and other synthetic difficulties. In this study, a highly diastereodivergent synthesis of hitherto difficult-to-access β-amino aldehydes that bear a chiral α-tert-amine moiety was achieved using the amine-catalyzed Mannich reactions of aldehydes with less-activated Z-ketimines that bear both alkyl and alkynyl groups.
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Affiliation(s)
- Chihiro Homma
- Department of Chemistry, Graduate School of Science, Kyoto University Sakyo Kyoto 606-8502 Japan
| | - Aika Takeshima
- Department of Chemistry, Graduate School of Science, Kyoto University Sakyo Kyoto 606-8502 Japan
| | - Taichi Kano
- Department of Chemistry, Graduate School of Science, Kyoto University Sakyo Kyoto 606-8502 Japan
| | - Keiji Maruoka
- Graduate School of Science, Graduate School of Pharmaceutical Sciences, Kyoto University Kyoto 606-8502 Japan .,School of Chemical Engineering and Light Industry, Guangdong University of Technology Guangzhou 510006 China
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12
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Synthesis of 1,2-Dihydro-Substituted Aniline Analogues Involving N-Phenyl-3-aza-Cope Rearrangement Using a Metal-Free Catalytic Approach. J CHEM-NY 2020. [DOI: 10.1155/2020/9139648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An efficient metal-free domino reaction leading to structural/electronically divergent 1,2-dihydropyridines from easily accessible propargyl vinyl anilines via N-phenyl 3-aza-Cope sigmatropic rearrangement is reported with good to excellent yields using 1,2-dichlorobenzene as solvent under thermal conditions. Spirocyclic substitution is also tolerated under the present optimized conditions.
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13
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Srivastava N, Macha L, Ha HJ. Stereoselective synthesis of 2,6-disubstituted piperidine alkaloids. Org Biomol Chem 2020; 18:5493-5512. [PMID: 32478370 DOI: 10.1039/d0ob00918k] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Among the large number of structurally diverse alkaloids, 2,6-disubstituted piperidine and its analogs have often been targeted when exploiting new synthetic techniques perhaps because of their strong pharmacological properties. This review outlines synthetic strategies to build the 2,6-disubstituted piperidine structural motif with a focus on stereochemical control of two substituents at C2 and C6. The key reactions in this process are then classified on the basis of how the piperidine rings were built with specific examples of natural products that control the stereochemical outcomes and their transition states.
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Affiliation(s)
- Nikhil Srivastava
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin 17035, Korea.
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14
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Stereoselective synthesis of δ-amino-α,β,γ,δ-unsaturated cycloketones via Mannich-type reaction. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Lee J, Kim HY, Oh K. Tandem Reaction Approaches to Isoquinolones from 2-Vinylbenzaldehydes and Anilines via Imine Formation-6π-Electrocyclization-Aerobic Oxidation Sequence. Org Lett 2020; 22:474-478. [PMID: 31880465 DOI: 10.1021/acs.orglett.9b04233] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Two distinctive transition-metal-promoted aerobic oxidation protocols have been developed for the synthesis of isoquinolones from 2-vinylbenzaldehydes and aniline derivatives. Thus, the one-pot tandem reaction sequence of imine formation, thermal 6π-electrocyclization, followed by either Cu(OAc)2-mediated or Pd(OAc)2-catalyzed aerobic oxidation protocol allowed the ready access to isoquinolone derivatives. The control experiments revealed that the 1,2-dihydroisoquinoline intermediates from the 6π-electrocyclization of 1-azatrienes were aerobically oxidized to isoquinolones in the presence of either Cu(OAc)2 or Pd(OAc)2 catalyst.
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Affiliation(s)
- Jiyeon Lee
- Center for Metareceptome Research, Graduate School of Pharmaceutical Sciences , Chung-Ang University , 84 Heukseok-ro, Dongjak , Seoul 06974 , Republic of Korea
| | - Hun Young Kim
- Center for Metareceptome Research, Graduate School of Pharmaceutical Sciences , Chung-Ang University , 84 Heukseok-ro, Dongjak , Seoul 06974 , Republic of Korea
| | - Kyungsoo Oh
- Center for Metareceptome Research, Graduate School of Pharmaceutical Sciences , Chung-Ang University , 84 Heukseok-ro, Dongjak , Seoul 06974 , Republic of Korea
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16
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17
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Pan GF, Zhang XL, Zhu XQ, Guo RL, Wang YQ. Synthesis of (E,E)-Dienones and (E,E)-Dienals via Palladium-Catalyzed γ,δ-Dehydrogenation of Enones and Enals. iScience 2019; 20:229-236. [PMID: 31590075 PMCID: PMC6817633 DOI: 10.1016/j.isci.2019.09.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 09/17/2019] [Accepted: 09/18/2019] [Indexed: 11/30/2022] Open
Abstract
A new strategy for the synthesis of conjugated (E,E)-dienones and (E,E)-dienals via a palladium-catalyzed aerobic γ,δ-dehydrogenation of enones and enals has been developed. The method can be employed in the direct and efficient synthesis of various (E,E)-dienones and (E,E)-dienals, including non-substituted α-, β-, and γ- and/or δ-substituted (E,E)-dienones and (E,E)-dienals. The protocol is featured by the ready accessibility and elaboration of the starting materials, good functional group compatibility, and mild reaction conditions. Furthermore, the reaction is of complete E,E-stereoselectivity and uses molecular oxygen as the sole clean oxidant.
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Affiliation(s)
- Gao-Fei Pan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Xing-Long Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Xue-Qing Zhu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Rui-Li Guo
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Yong-Qiang Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China.
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18
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Vargas DF, Larghi EL, Kaufman TS. The 6π-azaelectrocyclization of azatrienes. Synthetic applications in natural products, bioactive heterocycles, and related fields. Nat Prod Rep 2019; 36:354-401. [PMID: 30090891 DOI: 10.1039/c8np00014j] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Covering: 2006 to 2018 The application of the 6π-azaelectrocyclization of azatrienes as a key strategy for the synthesis of natural products, their analogs and related bioactive or biomedically-relevant compounds (from 2006 to date) is comprehensively reviewed. Details about reaction optimization studies, relevant reaction mechanisms and conditions are also discussed.
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Affiliation(s)
- Didier F Vargas
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531, 2000 Rosario, Argentina.
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19
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Virk S, Pansare SV. Biomimetic Organocatalytic Approach to 4-Arylquinolizidine Alkaloids and Application in the Synthesis of (-)-Lasubine II and (+)-Subcosine II. Org Lett 2019; 21:5524-5528. [PMID: 31246480 DOI: 10.1021/acs.orglett.9b01840] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An enantioselective, biomimetic organocatalytic synthesis of 4-arylquinolizidin-2-ones, key intermediates in the synthesis of several Lythraceae alkaloids, was developed. The methodology features S-proline-mediated Mannich/aza-Michael reactions of readily available arylideneacetones and Δ1-piperideine. The total syntheses of (-)-lasubine II and (+)-subcosine II as well as the formal syntheses of structurally related Lythraceae alkaloids were achieved. The use of Δ1-pyrroline in the Mannich/aza-Michael reaction provides enantiomerically enriched 5-arylindolizidin-7-ones, which are precursors to nonopiate antinociceptive agents.
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Affiliation(s)
- Seerat Virk
- Department of Chemistry , Memorial University , St. John's , Newfoundland , Canada A1B 3X7
| | - Sunil V Pansare
- Department of Chemistry , Memorial University , St. John's , Newfoundland , Canada A1B 3X7
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20
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Eskici M, Karanfil A. Stereoselective synthesis of cis-2,6-disubstituted piperidines from 1,2-cyclic sulfamidates. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.01.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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21
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Yedoyan J, Wurzer N, Klimczak U, Ertl T, Reiser O. Regio- und stereoselektive Synthese von funktionalisierten Dihydropyridinen, Pyridinen und 2H
-Pyranen: Heck-Kupplung an monocyclopropanierten Heterocyclen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813716] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Julietta Yedoyan
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Nikolai Wurzer
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Urszula Klimczak
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Thomas Ertl
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Oliver Reiser
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
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22
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Yedoyan J, Wurzer N, Klimczak U, Ertl T, Reiser O. Regio- and Stereoselective Synthesis of Functionalized Dihydropyridines, Pyridines, and 2H-Pyrans: Heck Coupling of Monocyclopropanated Heterocycles. Angew Chem Int Ed Engl 2019; 58:3594-3598. [PMID: 30629786 DOI: 10.1002/anie.201813716] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 01/02/2019] [Indexed: 12/18/2022]
Abstract
A palladium-catalyzed coupling between aryl halides and monocyclopropanated pyrroles or furans has been developed, leading to valuable six-membered N- and O-heterocycles. As the key step, a selective cleavage of the non-activated endocyclic C-C bond of the 2-heterobicyclo-[3.1.0]hexane framework is achieved. The developed method offers access to highly functionalized piperidines, pyridines, and pyrans that are challenging to access by traditional methods.
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Affiliation(s)
- Julietta Yedoyan
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, 93053, Regensburg, Deutschland
| | - Nikolai Wurzer
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, 93053, Regensburg, Deutschland
| | - Urszula Klimczak
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, 93053, Regensburg, Deutschland
| | - Thomas Ertl
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, 93053, Regensburg, Deutschland
| | - Oliver Reiser
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, 93053, Regensburg, Deutschland
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23
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Komendantova AS, Fakhrutdinov AN, Menchikov LG, Sukhorukov AY, Zavarzin IV, Volkova YA. Cyclization of β-Chlorovinyl Thiohydrazones into Pyridazines: A Mechanistic Study. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Anna S. Komendantova
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russia
| | - Artem N. Fakhrutdinov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russia
| | - Leonid G. Menchikov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russia
| | - Alexey Yu. Sukhorukov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russia
| | - Igor V. Zavarzin
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russia
| | - Yulia A. Volkova
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russia
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24
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Abstract
The hallmark of nucleophilic phosphine catalysis is the initial nucleophilic addition of a phosphine to an electrophilic starting material, producing a reactive zwitterionic intermediate, generally under mild conditions. In this Review, we classify nucleophilic phosphine catalysis reactions in terms of their electrophilic components. In the majority of cases, these electrophiles possess carbon-carbon multiple bonds: alkenes (section 2), allenes (section 3), alkynes (section 4), and Morita-Baylis-Hillman (MBH) alcohol derivatives (MBHADs; section 5). Within each of these sections, the reactions are compiled based on the nature of the second starting material-nucleophiles, dinucleophiles, electrophiles, and electrophile-nucleophiles. Nucleophilic phosphine catalysis reactions that occur via the initial addition to starting materials that do not possess carbon-carbon multiple bonds are collated in section 6. Although not catalytic in the phosphine, the formation of ylides through the nucleophilic addition of phosphines to carbon-carbon multiple bond-containing compounds is intimately related to the catalysis and is discussed in section 7. Finally, section 8 compiles miscellaneous topics, including annulations of the Hüisgen zwitterion, phosphine-mediated reductions, iminophosphorane organocatalysis, and catalytic variants of classical phosphine oxide-generating reactions.
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Affiliation(s)
- Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yi Chiao Fan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095-1569, USA
| | - Zhanhu Sun
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yang Wu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095-1569, USA
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25
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Wan Y, Zheng X, Ma C. Conjugated Dienyne-Imides as Robust Precursors of 1-Azatrienes for 6π Electrocyclizations to Furo[2,3-b
]dihydropyridine Cores. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800303] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yanjun Wan
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
| | - Xuchun Zheng
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
| | - Cheng Ma
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
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26
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Wan Y, Zheng X, Ma C. Conjugated Dienyne-Imides as Robust Precursors of 1-Azatrienes for 6π Electrocyclizations to Furo[2,3-b
]dihydropyridine Cores. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/anie.201800303] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yanjun Wan
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
| | - Xuchun Zheng
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
| | - Cheng Ma
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
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27
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Xie YB, Ye SP, Chen WF, Hu YL, Li DJ, Wang L. Brønsted-Acid-Catalyzed Multicomponent One-Pot Reaction: Efficient Synthesis of Polysubstituted 1,2-Dihydropyridines. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700127] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yi-Bi Xie
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials; College of Materials and Chemical Engineering; China Three Gorges University; Yichang Hubei 443002 China
| | - Si-Pei Ye
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials; College of Materials and Chemical Engineering; China Three Gorges University; Yichang Hubei 443002 China
| | - Wei-Feng Chen
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials; College of Materials and Chemical Engineering; China Three Gorges University; Yichang Hubei 443002 China
| | - Yu-Lin Hu
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials; College of Materials and Chemical Engineering; China Three Gorges University; Yichang Hubei 443002 China
| | - De-Jiang Li
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials; College of Materials and Chemical Engineering; China Three Gorges University; Yichang Hubei 443002 China
| | - Long Wang
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials; College of Materials and Chemical Engineering; China Three Gorges University; Yichang Hubei 443002 China
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28
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Zhu CZ, Sun YL, Wei Y, Shi M. Phosphine-Mediated Dimerization of Conjugated Ene-Yne Ketones: Stereoselective Construction of Dihydrobenzofurans. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700031] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Cheng-Zhi Zhu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Yao-Liang Sun
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 354 Fenglin Lu Shanghai 200032 People's Republic of China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; Tianjin 300071 People's Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 354 Fenglin Lu Shanghai 200032 People's Republic of China
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29
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Nebe M, Opatz T. Synthesis of Piperidines and Dehydropiperidines. ADVANCES IN HETEROCYCLIC CHEMISTRY 2017. [DOI: 10.1016/bs.aihch.2016.10.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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30
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Funakoshi Y, Miura T, Murakami M. Synthesis of Penta-2,4-dien-1-imines and 1,2-Dihydropyridines by Rhodium-Catalyzed Reaction of N-Sulfonyl-1,2,3-triazoles with 2-(Siloxy)furans. Org Lett 2016; 18:6284-6287. [PMID: 27978682 DOI: 10.1021/acs.orglett.6b03143] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A rhodium(II)-catalyzed reaction of N-sulfonyl-1,2,3-triazoles with 2-(siloxy)furans is reported. Either open-chain penta-2,4-dien-1-imines or cyclic 1,2-dihydropyridines are selectively obtained depending on the ligand on rhodium(II).
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Affiliation(s)
- Yuuta Funakoshi
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University , Katsura, Kyoto 615-8510, Japan
| | - Tomoya Miura
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University , Katsura, Kyoto 615-8510, Japan
| | - Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University , Katsura, Kyoto 615-8510, Japan
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31
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Yang X, Jin X, Wang C. Manganese-Catalyzed ortho
-C−H Alkenylation of Aromatic N−H Imidates with Alkynes: Versatile Access to Mono
-Alkenylated Aromatic Nitriles. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600128] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Xiaoxu Yang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
| | - Xiqing Jin
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
| | - Congyang Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
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32
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Abstract
A Ni-catalyzed cross coupling of arylzinc reagents with pyridinium ions provides enantioenriched dihydropyridines, which are precursors to diverse piperidine derivatives.
We report an enantioselective Ni-catalyzed cross coupling of arylzinc reagents with pyridinium ions formed in situ from pyridine and a chloroformate. This reaction provides enantioenriched 2-aryl-1,2-dihydropyridine products that can be elaborated to numerous piperidine derivatives with little or no loss in ee. This method is notable for its use of pyridine, a feedstock chemical, to build a versatile, chiral heterocycle in a single synthetic step.
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Affiliation(s)
- J Patrick Lutz
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
| | - Stephen T Chau
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
| | - Abigail G Doyle
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
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33
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Kano T, Kobayashi R, Maruoka K. Synthesis of N-Boc-Propargylic and Allylic Amines by Reaction of Organomagnesium Reagents with N-Boc-Aminals and Their Oxidation to N-Boc-Ketimines. Org Lett 2016; 18:276-9. [DOI: 10.1021/acs.orglett.5b03446] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Taichi Kano
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Ryohei Kobayashi
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Keiji Maruoka
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
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34
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Volkova YA, Antonov YS, Komkov AV, Scherbakov AM, Shashkov AS, Menchikov LG, Chernoburova EI, Zavarzin IV. Access to steroidal pyridazines via modified thiohydrazides. RSC Adv 2016. [DOI: 10.1039/c6ra06881b] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Cytotoxic effects against breast cancer cells.
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Affiliation(s)
- Y. A. Volkova
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Y. S. Antonov
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - A. V. Komkov
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - A. M. Scherbakov
- Blokhin N. N. Cancer Research Centre
- Ministry of Health of the Russian Federation
- 115478 Moscow
- Russia
| | - A. S. Shashkov
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - L. G. Menchikov
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - E. I. Chernoburova
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - I. V. Zavarzin
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russia
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35
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Kim HY, Oh K. 1,3-Dienones and 2H-Pyran-2-ones from Soft α-Vinyl Enolization of β-Chlorovinyl Ketones: Defined Roles of Brönsted and Lewis Base. Org Lett 2015; 17:6254-7. [PMID: 26649772 DOI: 10.1021/acs.orglett.5b03265] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The eliminative reaction pathways of (E)-β-chlorovinyl ketones were investigated in the presence of both Brönsted and Lewis bases. The Brönsted base, Et3N, effected the soft α-vinyl enolization of (E)-β-chlorovinyl ketones to [3]cumulenol intermediates; in turn, a catalytic amount of Lewis base, PPh3, initiated isomerization to provide 1,3-dienones in high yields. The introduction of a carbon-based nucleophile into the reaction mixture provided the highly efficient synthetic route to 2H-pyran-2-ones in one pot, where the carbon-based nucleophile generated by an extra equivalent of Brönsted base, Et3N, attacked the electrophilic [3]cumulenol intermediates to initiate cyclization to give 2H-pyran-2-ones.
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Affiliation(s)
- Hun Young Kim
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University , 84 Heukseok-ro, Dongjak, Seoul 156-756, Republic of Korea
| | - Kyungsoo Oh
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University , 84 Heukseok-ro, Dongjak, Seoul 156-756, Republic of Korea
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36
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Ramaraju P, Mir NA, Singh D, Gupta VK, Kant R, Kumar I. Enantioselective Synthesis of N-PMP-1,2-dihydropyridines via Formal [4 + 2] Cycloaddition between Aqueous Glutaraldehyde and Imines. Org Lett 2015; 17:5582-5. [PMID: 26516787 DOI: 10.1021/acs.orglett.5b02744] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A simple and highly practical one-pot formal [4 + 2] cycloaddition approach for the enantioselective synthesis of N-PMP-1,2-dihydropyridines (DHPs) is described. This chemistry involves an amino-catalytic direct Mannich reaction/cyclization followed by IBX-mediated chemo- and regioselective oxidation sequence between readily available aqueous glutaraldehyde and imines under very mild conditions. A series of N-PMP-1,2-DHPs have been prepared in high yields and excellent enantioselectivity. This method also gives access to both enantiomers of 1,2-DHPs in surplus amount by shifting the catalyst configuration.
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Affiliation(s)
- Panduga Ramaraju
- Department of Chemistry, Birla Institute of Technology and Science , Pilani 333 031, Rajasthan India
| | - Nisar A Mir
- Department of Chemistry, Birla Institute of Technology and Science , Pilani 333 031, Rajasthan India
| | - Deepika Singh
- Instrumentation Division, IIIM-CSIR Laboratory , Jammu 180 001, Jammu and Kashmir, India
| | - Vivek K Gupta
- X-ray Crystallography Laboratory, Post-Graduate Department of Physics & Electronics, University of Jammu , Jammu 180 006, Jammu and Kashmir, India
| | - Rajni Kant
- X-ray Crystallography Laboratory, Post-Graduate Department of Physics & Electronics, University of Jammu , Jammu 180 006, Jammu and Kashmir, India
| | - Indresh Kumar
- Department of Chemistry, Birla Institute of Technology and Science , Pilani 333 031, Rajasthan India
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37
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Komkov AV, Komendantova AS, Menchikov LG, Chernoburova EI, Volkova YA, Zavarzin IV. A Straightforward Approach toward Multifunctionalized Pyridazines via Imination/Electrocyclization. Org Lett 2015; 17:3734-7. [PMID: 26158207 DOI: 10.1021/acs.orglett.5b01718] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A facile synthesis of functionalized 3-carbamide pyridazines starting from readily available chlorovinyl aldehydes and oxamic acid thiohydrazides via cascade imination/electrocyclization is reported. In the presence of p-toluenesulfuric acid, various ketones have been efficiently incorporated into the pyridazine derivatives through a two-step sequence involving a Vilsmeier-Haack reaction and imination. The synthetic value of this method has been demonstrated by efficient synthesis of steroidal pyridazines.
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Affiliation(s)
- Alexander V Komkov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russia
| | - Anna S Komendantova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russia
| | - Leonid G Menchikov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russia
| | - Elena I Chernoburova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russia
| | - Yulia A Volkova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russia
| | - Igor V Zavarzin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russia
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38
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Undeela S, Thadkapally S, Nanubolu JB, Singarapu KK, Menon RS. Catalyst-controlled divergence in cycloisomerisation reactions of N-propargyl-N-vinyl sulfonamides: gold-catalysed synthesis of 2-sulfonylmethyl pyrroles and dihydropyridines. Chem Commun (Camb) 2015; 51:13748-51. [DOI: 10.1039/c5cc04871k] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Gold-catalysed, divergent synthesis of 2-sulfonylmethyl pyrroles and dihydropyridines from readily available N-propargyl-N-vinyl sulfonamides is reported.
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Affiliation(s)
- Sridhar Undeela
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Srinivas Thadkapally
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | | | - Kiran Kumar Singarapu
- Centre for Nuclear Magnetic Resonance
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Rajeev S. Menon
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
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