1
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Zhao C, Gao R, Ma W, Li M, Li Y, Zhang Q, Guan W, Fu J. A facile synthesis of α,β-unsaturated imines via palladium-catalyzed dehydrogenation. Nat Commun 2024; 15:4329. [PMID: 38773128 PMCID: PMC11109338 DOI: 10.1038/s41467-024-48737-9] [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: 11/30/2023] [Accepted: 05/13/2024] [Indexed: 05/23/2024] Open
Abstract
The dehydrogenation adjacent to an electron-withdrawing group provides an efficient access to α,β-unsaturated compounds that serving as versatile synthons in organic chemistry. However, the α,β-desaturation of aliphatic imines has hitherto proven to be challenging due to easy hydrolysis and preferential dimerization. Herein, by employing a pre-fluorination and palladium-catalyzed dehydrogenation reaction sequence, the abundant simple aliphatic amides are amendable to the rapid construction of complex molecular architectures to produce α,β-unsaturated imines. Mechanistic investigations reveal a Pd(0)/Pd(II) catalytic cycle involving oxidative H-F elimination of N-fluoroamide followed by a smooth α,β-desaturation of the in-situ generated aliphatic imine intermediate. This protocol exhibits excellent functional group tolerance, and even the carbonyl groups are compatible without any competing dehydrogenation, allowing for late-stage functionalization of complex bioactive molecules. The synthetic utility of this transformation has been further demonstrated by a diversity-oriented derivatization and a concise formal synthesis of (±)-alloyohimbane.
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Affiliation(s)
- Chunyang Zhao
- Department of Chemistry, Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis and Institute of Functional Material Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Rongwan Gao
- Department of Chemistry, Institute of Functional Material Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Wenxuan Ma
- Department of Chemistry, Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis and Institute of Functional Material Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Miao Li
- Department of Chemistry, Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis and Institute of Functional Material Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Yifei Li
- Department of Chemistry, Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis and Institute of Functional Material Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Qian Zhang
- Department of Chemistry, Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis and Institute of Functional Material Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Wei Guan
- Department of Chemistry, Institute of Functional Material Chemistry, Northeast Normal University, Changchun, 130024, China.
| | - Junkai Fu
- Department of Chemistry, Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis and Institute of Functional Material Chemistry, Northeast Normal University, Changchun, 130024, China.
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2
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Verma P, Pallerla RR, Rolig A, Pihko PM. Humilisin E: Strategy for the Synthesis and Access to the Functionalized Bicyclic Core. J Org Chem 2024; 89:6987-6990. [PMID: 38670541 PMCID: PMC11110058 DOI: 10.1021/acs.joc.4c00358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/05/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024]
Abstract
Humilisin E is a diterpenoid possessing a rare epoxidized cyclononene trans-fused with a bicyclo[3.2.0]heptane core. We have identified the P atropisomer of the corresponding cyclononadiene as a potential biosynthetic/synthetic precursor to humilisin E and reported two different strategies for the stereocontrolled synthesis of the appropriately functionalized bicyclic cores of humilisin E. The first route involves a Stork epoxynitrile cyclization via a Mg alkoxide, and the second, more stereoselective approach utilizes the Wolff rearrangement as the key step.
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Affiliation(s)
| | | | - Aino Rolig
- Department of Chemistry and
NanoScience Center, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Petri M. Pihko
- Department of Chemistry and
NanoScience Center, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
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3
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Ma C, Meng H, He X, Jiang Y, Yu B. Visible-Light-Promoted Transition-Metal-Free Construction of 3-Perfluoroalkylated Thioflavones. Front Chem 2022; 10:953978. [PMID: 35910726 PMCID: PMC9326344 DOI: 10.3389/fchem.2022.953978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 06/15/2022] [Indexed: 11/30/2022] Open
Abstract
A visible-light-promoted transition-metal-free perfluoroalkylation/cyclization reaction was developed with 9-mesityl-10-methylacridinium perchlorate (Acr+-Mes·ClO4−) as the photocatalyst, by which various perfluoroalkyl-substituted heterocycles including thioflavones, oxindoles, and quinoline-2,4(1H,3H)-diones were prepared at room temperature. Moreover, the potential of this sustainable method is demonstrated by the excellent in vitro anti-lymphoma and cervical carcinoma activity of the novel 3-perfluoroalkylated thioflavone 3m.
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Affiliation(s)
- Chunhua Ma
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical, Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, China
| | - Hui Meng
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical, Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, China
| | - Xing He
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical, Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, China
| | - Yuqin Jiang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical, Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, China
- *Correspondence: Yuqin Jiang, ; Bing Yu,
| | - Bing Yu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, China
- *Correspondence: Yuqin Jiang, ; Bing Yu,
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4
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Zheng S, Zhang T, Maekawa H. Magnesium-Promoted Reductive Carboxylation of Aryl Vinyl Ketones: Synthesis of γ-Keto Carboxylic Acids. J Org Chem 2022; 87:7342-7349. [PMID: 35608163 DOI: 10.1021/acs.joc.2c00557] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Direct reductive carboxylation of easily prepared aryl vinyl ketones under the atmosphere of carbon dioxide led to the selective formation of γ-keto carboxylic acids in 38-86% yields. The reaction is characterized by the carbon-carbon bond formation of carbon dioxide at the β-position of enone, with the use of magnesium turnings that can be easily handled as the reducing agent and the eco-friendly reaction conditions such as no pressuring, no lower or higher reaction temperature, and short reaction time. This protocol showed a wide substrate scope and provided a useful and convenient alternative to access biologically important γ-keto carboxylic acids.
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Affiliation(s)
- Suhua Zheng
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1, Kamitomioka-cho, Nagaoka, Niigata 940-2188, Japan
| | - Tianyuan Zhang
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1, Kamitomioka-cho, Nagaoka, Niigata 940-2188, Japan
| | - Hirofumi Maekawa
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1, Kamitomioka-cho, Nagaoka, Niigata 940-2188, Japan
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5
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Ricca M, Zhang W, Li J, Fellowes T, White JM, Donnelly PS, Rizzacasa MA. Synthesis of acyloin natural products by Mukaiyama hydration. Org Biomol Chem 2022; 20:4038-4047. [PMID: 35506986 DOI: 10.1039/d2ob00651k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The acyloin natural products are a family of bioactive compounds isolated from fungi and myxobacteria. The total synthesis of 7 members of the acyloin family was achieved via a HWE reaction followed by Mukaiyama-Isayama hydration, using novel Co(II) and Co(III) Schiff base SALPN complexes as catalysts for the key enone hydration step. Furthermore, we have shown that a mild acyloin rearrangement is possible under Mukaiyama hydration conditions, which was crucial in the success of this approach.
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Affiliation(s)
- Michael Ricca
- School of Chemistry, The Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Victoria 3010, Australia.
| | - Wei Zhang
- School of Chemistry, The Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Victoria 3010, Australia.
| | - Jiaqi Li
- School of Chemistry, The Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Victoria 3010, Australia.
| | - Thomas Fellowes
- School of Chemistry, The Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Victoria 3010, Australia.
| | - Jonathan M White
- School of Chemistry, The Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Victoria 3010, Australia.
| | - Paul S Donnelly
- School of Chemistry, The Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Victoria 3010, Australia.
| | - Mark A Rizzacasa
- School of Chemistry, The Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Victoria 3010, Australia.
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6
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Bhadke PK, Pahelkar AR, Gadkari YU, Naik JM, Telvekar VN. Eco-Friendly and Efficient Greener Process for the Synthesis of Chalcones and Pyrazolones Using the Supramolecular Catalyst β-Cyclodextrin. ORG PREP PROCED INT 2022. [DOI: 10.1080/00304948.2022.2034462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Priyanka K. Bhadke
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, India
| | - Akshata R. Pahelkar
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, India
| | - Yatin U. Gadkari
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, India
| | - John M. Naik
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, India
| | - Vikas N. Telvekar
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, India
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7
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Lin D, Jiang S, Zhang A, Wu T, Qian Y, Shao Q. Structural derivatization strategies of natural phenols by semi-synthesis and total-synthesis. NATURAL PRODUCTS AND BIOPROSPECTING 2022; 12:8. [PMID: 35254538 PMCID: PMC8901917 DOI: 10.1007/s13659-022-00331-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 02/15/2022] [Indexed: 05/08/2023]
Abstract
Structural derivatization of natural products has been a continuing and irreplaceable source of novel drug leads. Natural phenols are a broad category of natural products with wide pharmacological activity and have offered plenty of clinical drugs. However, the structural complexity and wide variety of natural phenols leads to the difficulty of structural derivatization. Skeleton analysis indicated most types of natural phenols can be structured by the combination and extension of three common fragments containing phenol, phenylpropanoid and benzoyl. Based on these fragments, the derivatization strategies of natural phenols were unified and comprehensively analyzed in this review. In addition to classical methods, advanced strategies with high selectivity, efficiency and practicality were emphasized. Total synthesis strategies of typical fragments such as stilbenes, chalcones and flavonoids were also covered and analyzed as the supplementary for supporting the diversity-oriented derivatization of natural phenols.
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Affiliation(s)
- Ding Lin
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China.
- Zhejiang Provincial Key Laboratory of Resources Protection and Innovation of Traditional Chinese Medicine, Zhejiang A & F University, Hangzhou, 311300, China.
| | - Senze Jiang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China
- Zhejiang Provincial Key Laboratory of Resources Protection and Innovation of Traditional Chinese Medicine, Zhejiang A & F University, Hangzhou, 311300, China
| | - Ailian Zhang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China
- Zhejiang Provincial Key Laboratory of Resources Protection and Innovation of Traditional Chinese Medicine, Zhejiang A & F University, Hangzhou, 311300, China
| | - Tong Wu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China
- Zhejiang Provincial Key Laboratory of Resources Protection and Innovation of Traditional Chinese Medicine, Zhejiang A & F University, Hangzhou, 311300, China
| | - Yongchang Qian
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China
- Zhejiang Provincial Key Laboratory of Resources Protection and Innovation of Traditional Chinese Medicine, Zhejiang A & F University, Hangzhou, 311300, China
| | - Qingsong Shao
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China.
- Zhejiang Provincial Key Laboratory of Resources Protection and Innovation of Traditional Chinese Medicine, Zhejiang A & F University, Hangzhou, 311300, China.
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8
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Du X, Hu Y, Yang D, Huang D, Yang W, Wu H, Zhao H. Isoindolinone synthesis through Rh/Cu-catalyzed oxidative C-H/N-H annulation of N-methoxy benzamides with saturated ketones. Org Biomol Chem 2022; 20:783-789. [PMID: 34989388 DOI: 10.1039/d1ob02166d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of isoindolinones from N-methoxy benzamides and saturated ketones via a bimetallic tandem catalytic annulation has been accomplished. The reaction is catalyzed by a Rh/Cu-cocatalytic system and proceeds via the combination of Cu-catalyzed dehydrogenation of ketones and Rh-catalyzed direct C-H functionalization with the assistance of the N-methoxy amide group which also acts as an oxidant to regenerate the Rh catalyst. This method shows good compatibility with a wide range of substrates and functional groups, and provides an alternative strategy to obtain diverse isoindolinones.
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Affiliation(s)
- Xiao Du
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China.
| | - Yuntao Hu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China.
| | - Darun Yang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China.
| | - Decai Huang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China.
| | - Wendi Yang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China.
| | - Hailong Wu
- School of Mechanical and Resource Engineering, Wuzhou University, Wuzhou, China
| | - Huaiqing Zhao
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China.
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9
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Shibatani A, Kataoka Y, Ura Y. Palladium‐Catalyzed Aerobic α,β‐Dehydrogenation of Carboxylic Acids. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Ayaka Shibatani
- Department of Chemistry, Biology, and Environmental Science Faculty of Science Nara Women's University Kitauoyanishi-machi, Nara 630-8506 Japan
| | - Yasutaka Kataoka
- Department of Chemistry, Biology, and Environmental Science Faculty of Science Nara Women's University Kitauoyanishi-machi, Nara 630-8506 Japan
| | - Yasuyuki Ura
- Department of Chemistry, Biology, and Environmental Science Faculty of Science Nara Women's University Kitauoyanishi-machi, Nara 630-8506 Japan
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10
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Yoo HS, Yang YS, Kim SL, Son SH, Jang YH, Shin JW, Kim NJ. Syntheses of 1H-Indoles, Quinolines, and 6-Membered Aromatic N-Heterocycle-Fused Scaffolds via Palladium(II)-Catalyzed Aerobic Dehydrogenation under Alkoxide-Free Conditions. Chem Asian J 2021; 16:3469-3475. [PMID: 34494376 DOI: 10.1002/asia.202100861] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/25/2021] [Indexed: 12/14/2022]
Abstract
Aromatic N-heterocycle-fused scaffolds such as indoles and quinolines are important core structures found in various bioactive natural products and synthetic compounds. Recently, various dehydrogenation methods with the help of alkoxides, known to significantly promote dihydro- or tetrahydro-heterocycles to be oxidized, were developed for the heterocycle synthesis. However, these approaches are sometimes unsuitable due to resulting undesired side reactions such as reductive dehalogenation. Herein, expedient syntheses of 1H-indoles, quinolines, and 6-membered N-heterocycle-fused scaffolds from their hydrogenated forms through palladium(II)-catalyzed aerobic dehydrogenation under alkoxide-free conditions are reported. A total of 48 compounds were successfully synthesized with a wide range of functional groups including halogens (up to 99% yield). These methodologies provide facile routes for various privileged structures possessing aromatic N-heterocycles without the help of alkoxides, in highly efficient manners.
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Affiliation(s)
- Hyung-Seok Yoo
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Yo-Sep Yang
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Soo Lim Kim
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Seung Hwan Son
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Yoon Hu Jang
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Jeong-Won Shin
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Nam-Jung Kim
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea.,Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
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11
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Xue Y, Dong G. Total Synthesis of Penicibilaenes via C-C Activation-Enabled Skeleton Deconstruction and Desaturation Relay-Mediated C-H Functionalization. J Am Chem Soc 2021; 143:8272-8277. [PMID: 34038107 DOI: 10.1021/jacs.1c04335] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Herein, we describe the first total synthesis of sesquiterpene penicibilaenes A and B through a "C-C/C-H" approach. In the "C-C" stage, the Rh-catalyzed "cut-and-sew" transformation between trisubstituted alkene and cyclobutanone has been employed to construct the unique tricyclo[6.3.1.01,5]dodecane skeleton and the all-carbon quaternary center. Critical linker and Lewis acid effects have been identified for the C-C activation process. In the "C-H" stage, a desaturation relay-based strategy involving consecutive ketone α,β-dehydrogenation and β-functionalization has been adopted to introduce the 1,3,5-triad stereocenters to the core. The synthesis of penicibilaenes A and B has been completed in 13 and 14 steps, respectively, in the longest linear sequence.
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Affiliation(s)
- Yibin Xue
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
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12
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Zhu Q, Luo Y, Guo Y, Zhang Y, Tao Y. Saegusa Oxidation of Enol Ethers at Extremely Low Pd-Catalyst Loadings under Ligand-free and Aqueous Conditions: Insight into the Pd(II)/Cu(II)-Catalyst System. J Org Chem 2021; 86:5463-5476. [PMID: 33765382 DOI: 10.1021/acs.joc.0c02987] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A highly efficient and practical Pd(II)/Cu(OAc)2-catalyst system of Saegusa oxidation, which converts enol ethers to the corresponding enals with a number of diverse substrates at extremely low catalyst loadings (500 mol ppm) under ligand-free and aqueous conditions, is described. Its synthetic utility was demonstrated by large-scale applications of the catalyst system to important nature molecules. This work allows Saegusa oxidation to become a highly practical approach to preparing enals and also suggests new insight into the Pd(II)/Cu(II)-catalyst system for dehydrogenation of carbonyl compounds and decreasing Pd-catalyst loadings.
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Affiliation(s)
- Quan Zhu
- Kunming Biohome Technology Co. Limited, Kunming 650501, PR China
| | - Yunsong Luo
- Kunming Biohome Technology Co. Limited, Kunming 650501, PR China
| | - Yongyan Guo
- Kunming Biohome Technology Co. Limited, Kunming 650501, PR China
| | - Yushun Zhang
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China
| | - Yunhai Tao
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China.,Kunming Biohome Technology Co. Limited, Kunming 650501, PR China
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13
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Abstract
Spiroaxillarone A, a novel and unique spirocyclic dinaphthalene natural product with significant antimalarial activity, was regioselectively synthesized from tetrahydrocurcumin in five steps with an overall 10% yield. Key features of the synthesis involved an oxidized free radical cycloaddition to build the spiro ring central skeleton and an oxidized dehydrogenation to introduce two double bonds via enol silicon ether from diketones.
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Affiliation(s)
- Minjian Liao
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xiangxin Li
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yajuan Zheng
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Zhixiang Xie
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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14
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Zhang XW, Jiang GQ, Lei SH, Shan XH, Qu JP, Kang YB. Iron-Catalyzed α,β-Dehydrogenation of Carbonyl Compounds. Org Lett 2021; 23:1611-1615. [PMID: 33577342 DOI: 10.1021/acs.orglett.1c00043] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An iron-catalyzed α,β-dehydrogenation of carbonyl compounds was developed. A broad spectrum of carbonyls or analogues, such as aldehyde, ketone, lactone, lactam, amine, and alcohol, could be converted to their α,β-unsaturated counterparts in a simple one-step reaction with high yields.
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Affiliation(s)
- Xiao-Wei Zhang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.,Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guo-Qing Jiang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Shu-Hui Lei
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xiang-Huan Shan
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jian-Ping Qu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yan-Biao Kang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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15
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Gnaim S, Vantourout JC, Serpier F, Echeverria PG, Baran PS. Carbonyl Desaturation: Where Does Catalysis Stand? ACS Catal 2021. [DOI: 10.1021/acscatal.0c04712] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Samer Gnaim
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Julien C. Vantourout
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Fabien Serpier
- Minakem High Potent, 8 Rue Fond Jean Pâques, 1435 Mont-Saint-Guibert, Belgium
| | | | - Phil. S. Baran
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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16
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Öztürk BÖ, Sarıaslan B, Aşkun M, Tunalı Z, Şehitoğlu SK. One-pot synthesis of α,β-unsaturated ketones through sequential alkyne dimerization/hydration reactions using the Hoveyda–Grubbs catalyst. NEW J CHEM 2021. [DOI: 10.1039/d1nj02410h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The combination of HG2/PCy3 and CCl3COOH/p-TsOH·H2O through one-pot alkyne dimerization/hydration reactions gave α,β-unsaturated ketones in quantitative yields within 2.5–4 h.
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Affiliation(s)
- Bengi Özgün Öztürk
- Hacettepe University, Faculty of Science, Chemistry Department, 06800, Beytepe-Ankara, Turkey
| | - Begüm Sarıaslan
- Hacettepe University, Faculty of Science, Chemistry Department, 06800, Beytepe-Ankara, Turkey
- Hacettepe University, Graduate School of Science and Engineering, 06800, Beytepe-Ankara, Turkey
| | - Mina Aşkun
- Hacettepe University, Faculty of Science, Chemistry Department, 06800, Beytepe-Ankara, Turkey
| | - Zeynep Tunalı
- Hacettepe University, Faculty of Science, Chemistry Department, 06800, Beytepe-Ankara, Turkey
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17
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Kim YM, Yoo H, Son SH, Kim GY, Jang HJ, Kim DH, Kim SD, Park BY, Kim N. A Novel Approach to
N
‐Tf 2‐Aryl‐2,3‐Dihydroquinolin‐ 4(1
H
)‐ones via a Ligand‐Free Pd(II)‐Catalyzed Oxidative Aza‐Michael Cyclization. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001425] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Young Min Kim
- College of Pharmacy Kyung Hee University 26 Kyungheedae-ro, Dongdaemun-gu Seoul 02447, Republic of Korea
| | - Hyung‐Seok Yoo
- College of Pharmacy Kyung Hee University 26 Kyungheedae-ro, Dongdaemun-gu Seoul 02447, Republic of Korea
| | - Seung Hwan Son
- College of Pharmacy Kyung Hee University 26 Kyungheedae-ro, Dongdaemun-gu Seoul 02447, Republic of Korea
| | - Ga Yeong Kim
- College of Pharmacy Kyung Hee University 26 Kyungheedae-ro, Dongdaemun-gu Seoul 02447, Republic of Korea
| | - Hyu Jeong Jang
- College of Pharmacy Kyung Hee University 26 Kyungheedae-ro, Dongdaemun-gu Seoul 02447, Republic of Korea
| | - Dong Hwan Kim
- College of Pharmacy Kyung Hee University 26 Kyungheedae-ro, Dongdaemun-gu Seoul 02447, Republic of Korea
| | - Soo Dong Kim
- Department of Life and Nanopharmaceutical Sciences Kyung Hee University 26 Kyungheedae-ro, Dongdaemun-gu Seoul 02447, Republic of Korea
| | - Boyoung Y. Park
- Department of Life and Nanopharmaceutical Sciences Kyung Hee University 26 Kyungheedae-ro, Dongdaemun-gu Seoul 02447, Republic of Korea
| | - Nam‐Jung Kim
- College of Pharmacy Kyung Hee University 26 Kyungheedae-ro, Dongdaemun-gu Seoul 02447, Republic of Korea
- Department of Life and Nanopharmaceutical Sciences Kyung Hee University 26 Kyungheedae-ro, Dongdaemun-gu Seoul 02447, Republic of Korea
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18
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Hamama WS, Sofan MA, EL-Hawary II, Zoorob HH. Narrative in the chemistry of (aryl/hetaryl)thiopyran-4-one. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1846200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Wafaa S. Hamama
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Mamdouh A. Sofan
- Department of Chemistry, Faculty of Science, Damietta University, Damietta, Egypt
| | - Ibrahim I. EL-Hawary
- Department of Chemistry, Faculty of Science, Damietta University, Damietta, Egypt
| | - Hanafi H. Zoorob
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt
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19
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Chen H, Liu L, Huang T, Chen J, Chen T. Direct Dehydrogenation for the Synthesis of α,β‐Unsaturated Carbonyl Compounds. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000454] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Hong Chen
- Haikou Hospital affiliated to Xiangya School of MedicineCentral South University Haikou 570100 People's Republic of China
| | - Long Liu
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island ResourcesHainan Provincial Key Lab of Fine ChemHainan University Haikou 570228 People's Republic of China
| | - Tianzeng Huang
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island ResourcesHainan Provincial Key Lab of Fine ChemHainan University Haikou 570228 People's Republic of China
| | - Jing Chen
- Haikou Hospital affiliated to Xiangya School of MedicineCentral South University Haikou 570100 People's Republic of China
| | - Tieqiao Chen
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island ResourcesHainan Provincial Key Lab of Fine ChemHainan University Haikou 570228 People's Republic of China
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20
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Takei D, Yatabe T, Jin X, Yabe T, Mizuno N, Yamaguchi K. CeO2-Supported Pd(II)-on-Au Nanoparticle Catalyst for Aerobic Selective α,β-Desaturation of Carbonyl Compounds Applicable to Cyclohexanones. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00277] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Daisuke Takei
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takafumi Yatabe
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Xiongjie Jin
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Tomohiro Yabe
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Noritaka Mizuno
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kazuya Yamaguchi
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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21
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Li Q, Zhuang C, Wang D, Zhang W, Jia R, Sun F, Zhang Y, Du Y. Construction of trisubstituted chromone skeletons carrying electron-withdrawing groups via PhIO-mediated dehydrogenation and its application to the synthesis of frutinone A. Beilstein J Org Chem 2020; 15:2958-2965. [PMID: 31921367 PMCID: PMC6941426 DOI: 10.3762/bjoc.15.291] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 11/27/2019] [Indexed: 12/20/2022] Open
Abstract
The construction of the biologically interesting chromone skeleton was realized by PhIO-mediated dehydrogenation of chromanones under mild conditions. Interestingly, this method also found application in the synthesis of the naturally occurring frutinone A.
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Affiliation(s)
- Qiao Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Chen Zhuang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Donghua Wang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Wei Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Rongxuan Jia
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Fengxia Sun
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology; Hebei Research Center of Pharmaceutical and Chemical Engineering, Shijiazhuang 050018, China
| | - Yilin Zhang
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506-6045, United States
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
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22
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Cao Y, Liu L, Huang T, Chen T. Iodine-catalyzed α,β-dehydrogenation of ketones and aldehydes generating conjugated enones and enals. NEW J CHEM 2020. [DOI: 10.1039/d0nj01244k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A transition metal-free α,β-dehydrogenation of ketones and aldehydes was developed.
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Affiliation(s)
- Yuanjie Cao
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- China
| | - Long Liu
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources
- College of Chemical Engineering and Technology
- Hainan University
- Haikou
- China
| | - Tianzeng Huang
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources
- College of Chemical Engineering and Technology
- Hainan University
- Haikou
- China
| | - Tieqiao Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- China
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23
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Liu W, Zhao LL, Melaimi M, Cao L, Xu X, Bouffard J, Bertrand G, Yan X. Mesoionic Carbene (MIC)-Catalyzed H/D Exchange at Formyl Groups. Chem 2019. [DOI: 10.1016/j.chempr.2019.08.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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24
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Yoo HS, Son SH, Cho YY, Lee SJ, Jang HJ, Kim YM, Kim DH, Kim NY, Park BY, Lee YS, Kim NJ. Synthesis of Flavanones via Palladium(II)-Catalyzed One-Pot β-Arylation of Chromanones with Arylboronic Acids. J Org Chem 2019; 84:10012-10023. [DOI: 10.1021/acs.joc.9b01162] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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25
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Zhou X, Xu H, Yang Q, Chen H, Wang S, Zhao H. Co(ii)/Cu(ii)-cocatalyzed oxidative C–H/N–H functionalization of benzamides with ketones: a facile route to isoindolin-1-ones. Chem Commun (Camb) 2019; 55:8603-8606. [DOI: 10.1039/c9cc02661d] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Co/Cu-cocatalyzed oxidative C–H/N–H annulation of amides with ketones is developed to synthesize isoindolin-1-ones.
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Affiliation(s)
- Xi Zhou
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan
- P. R. China
| | - Hongyan Xu
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan
- P. R. China
| | - Qiaodan Yang
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan
- P. R. China
| | - Hua Chen
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan
- P. R. China
| | - Shoufeng Wang
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Huaiqing Zhao
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan
- P. R. China
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