1
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Long L, Li X, Huang Z, Yu Z, Yu D, Luo W, Qiao L, Chen Z, Wang ZX. Hypervalent Iodine Promoted Selective [2 + 2 + 1] Cycloaddition of Aromatic Ketones and Methylamines: A One-Pot Access to 1-Pyrrolines. J Org Chem 2024. [PMID: 38981120 DOI: 10.1021/acs.joc.4c00830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Herein, a versatile highly regioselective three-component annulation of simple aromatic ketones and methylamines using a hypervalent iodine reagent for polyarylated 1-pyrrolines has been described in good to excellent yields. Meanwhile, unsymmetrical 1-pyrroline isomers could be realized and synthesized. Such an intriguing one-pot two-step tandem assembly strategy with green conditions and high regioselectivity shows predictable inspiration in related annulation reactions.
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Affiliation(s)
- Lipeng Long
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Xin Li
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Ziwen Huang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Ziyi Yu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Daohong Yu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Wenjun Luo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Liang Qiao
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Zhengwang Chen
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Zhong-Xia Wang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
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2
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Deng M, Yang J, Kong Z, Li Y, Wang Q, Liu H, Deng SZ, Li N. Manganese/Enzyme Sequential Catalytic Pathway for the Production of Optically Active γ-Functionalized Alcohols. J Org Chem 2024; 89:9103-9109. [PMID: 38842047 DOI: 10.1021/acs.joc.4c00776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
A brief, practical catalytic process for the production of optically active γ-functionalized alcohols from relevant alkenes has been developed by using a robust Mn(III)/air/(Me2SiH)2O catalytic system combined with lipase-catalyzed kinetic resolution. This approach demonstrates exceptional tolerance toward proximal functional groups present on alkenes, enabling the achievement of high yields and exclusive enantioselectivity. Under this sequential catalytic system, the chiral alkene precursors can also be converted into γ-functionalized alcohols and related acetates as separable single enantiomers.
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Affiliation(s)
- Meng Deng
- College of Food and Drug, Luoyang Normal University, Luoyang, Henan Province 471934, China
| | - Jiaqi Yang
- College of Food and Drug, Luoyang Normal University, Luoyang, Henan Province 471934, China
| | - Zhiyi Kong
- College of Food and Drug, Luoyang Normal University, Luoyang, Henan Province 471934, China
| | - Yaning Li
- College of Food and Drug, Luoyang Normal University, Luoyang, Henan Province 471934, China
| | - Quanpeng Wang
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, Henan Province 471934, China
| | - Huan Liu
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, Henan Province 471023, China
| | - Shu-Zhen Deng
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, Henan Province 471023, China
| | - Nan Li
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, Henan Province 471934, China
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3
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Darzina M, Jirgensons A. Electrochemical Formation of Oxazolines by 1,3-Oxyfluorination of Non-activated Cyclopropanes. Org Lett 2024; 26:2158-2162. [PMID: 38456832 DOI: 10.1021/acs.orglett.4c00143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
The C-C bond in non-activated cyclopropanes can be intramolecularly cleaved with an electrochemically generated amidyl radical forming oxazolines. In the presence of TBABF4, this provides 1,3-oxyfluorination products. C-C bond cleavage of cyclopropane proceeds with inversion of the configuration, suggesting an intramolecular homolytic substitution (SHi) mechanism. The performance of TBABF4 as an efficient fluoride source was explained by accumulation of the BF4- anion at the anode surface, at which a carbocation is formed by the oxidation of the C-centered radical.
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Affiliation(s)
- Madara Darzina
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Aigars Jirgensons
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
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4
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Sheng W, Huang X, Cai J, Zheng Y, Wen Y, Song C, Li J. Electrochemical Oxidation Enables Regioselective 1,3-Hydroxyfunctionalization of Cyclopropanes. Org Lett 2023; 25:6178-6183. [PMID: 37584476 DOI: 10.1021/acs.orglett.3c02309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
The direct construction of 1,3-hydroxyfunctionalized molecules is still a significant challenge, as they can currently be obtained through multiple synthetic steps. Herein, we report a general and efficient 1,3-hydroxyfunctionalization of arylcyclopropanes by electrochemical oxidation with a strategic choice of nucleophiles and H2O. 1,3-Amino alcohols, 1,3-alkynyl alcohols, 1,3-hydroxyesters, and 1,3-halo alcohols are achieved with high levels of chemo- and regio-selectivity, opening a new dimension for 1,3-difunctionalization reaction.
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Affiliation(s)
- Wei Sheng
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Xuejin Huang
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Jianhua Cai
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Ye Zheng
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Yuxi Wen
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Chunlan Song
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Jiakun Li
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
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5
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Yang S, Wu JY, Lin S, Pu M, Huang ZS, Wang H, Li Q. Divergent Fluorinations of Vinylcyclopropanes: Ring-Opening 1,5-Hydrofluorination and Ring-Retaining 1,2-Difluorination. Chem Asian J 2023; 18:e202300476. [PMID: 37366264 DOI: 10.1002/asia.202300476] [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: 05/29/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 06/28/2023]
Abstract
Organofluorine compounds have been widely used in pharmaceutical, agrochemical, and material sciences. Reported herein are divergent fluorination reactions of vinylcyclopropanes with different electrophiles, which allow the facile synthesis of homoallylic monofluorides and vicinal-difluorides through ring-opening 1,5-hydrofluorination and ring-retaining 1,2-difluorination, respectively. Both protocols feature mild conditions, simple operations, good functional group tolerance, and generally good yields. The practicality of these reactions is demonstrated by their scalability, as well as the successful conversion of the formed homoallylic monofluorides into other complex fluorinated molecules.
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Affiliation(s)
- Shuang Yang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Jun-Yunzi Wu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Shuang Lin
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Meicen Pu
- Department of Endocrinology and Metabolism, Nanfang Hospital of Southern Medical University, Guangzhou, 510515, P. R. China
| | - Zhi-Shu Huang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Honggen Wang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Qingjiang Li
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
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6
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Nguyen TVT, Wodrich MD, Waser J. Substrate-controlled C-H or C-C alkynylation of cyclopropanes: generation of aryl radical cations by direct light activation of hypervalent iodine reagents. Chem Sci 2022; 13:12831-12839. [PMID: 36519037 PMCID: PMC9645386 DOI: 10.1039/d2sc04344k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 10/10/2022] [Indexed: 09/16/2023] Open
Abstract
We report the first oxidative C-H alkynylation of arylcyclopropanes. Irradiation of ethynylbenziodoxolone (EBX) reagents with visible light at 440 nm promoted the reaction. By the choice of the aryl group on the cyclopropane, it was possible to completely switch the outcome of the reaction from the alkynylation of the C-H bond to the oxyalkynylation of the C-C bond, which proceeded without the need for a catalyst, in contrast to previous works. The oxyalkynylation could also be extended to aminocyclopropanes as well as styrenes. Computations indicated that the C-H activation became a favoured nearly barrierless process in the presence of two ortho methyl groups on the benzene ring.
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Affiliation(s)
- Tin V T Nguyen
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemistry and Chemical Engineering, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
| | - Matthew D Wodrich
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemistry and Chemical Engineering, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemistry and Chemical Engineering, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
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7
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Liu K, Wang G, Zhang ZW, Shi YY, Ye ZS. C-C Bond Activation of Cyclopropanes Enabled by Phosphine-Catalyzed In Situ Formation of High-Strain Methylenecycopropane Intermediate. Org Lett 2022; 24:6489-6493. [PMID: 36069728 DOI: 10.1021/acs.orglett.2c02201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An effective strategy for the ring-opening/elaboration of cyclopropanes by phosphine catalyst is documented, providing the 2,4-pentadiene sulfonamides and isoindolines in moderate to good yields. The key to the success of this reaction is phosphine-catalyzed introduction of a trigonal center into cyclopropanes, which results in the formation of higher ring strain cyclopropylidenemethyl phosphonium salt. Moreover, this methodology is employed as the key step for the synthesis of bioactive molecules.
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Affiliation(s)
- Kui Liu
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P.R. China
| | - Gang Wang
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P.R. China
| | - Zhe-Wen Zhang
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P.R. China
| | - Yu-Yang Shi
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P.R. China
| | - Zhi-Shi Ye
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P.R. China
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8
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Zhang Q, Chan Y, Zhang M, Yeung Y, Ke Z. Hypervalent Chalcogenonium⋅⋅⋅π Bonding Catalysis. Angew Chem Int Ed Engl 2022; 61:e202208009. [DOI: 10.1002/anie.202208009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Qingyu Zhang
- School of Science and Engineering The Chinese University of Hong Kong Shenzhen 518172, Guangdong China
- School of Chemistry and Materials Science University of Science and Technology of China Hefei 230026, Anhui China
| | - Yung‐Yin Chan
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry The Chinese University of Hong Kong Shatin, NT Hong Kong China
| | - Muyin Zhang
- School of Science and Engineering The Chinese University of Hong Kong Shenzhen 518172, Guangdong China
| | - Ying‐Yeung Yeung
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry The Chinese University of Hong Kong Shatin, NT Hong Kong China
| | - Zhihai Ke
- School of Science and Engineering The Chinese University of Hong Kong Shenzhen 518172, Guangdong China
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9
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Zhang Q, Chan YY, Zhang M, Yeung YY, Ke Z. Hypervalent Chalcogenonium•••π Bonding Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Qingyu Zhang
- The Chinese University of Hong Kong - Shenzhen School of Science and Engineering CHINA
| | - Yung-Yin Chan
- The Chinese University of Hong Kong Department of Chemistry HONG KONG
| | - Muyin Zhang
- The Chinese University of Hong Kong - Shenzhen School of Science and Engineering CHINA
| | - Ying-Yeung Yeung
- The Chinese University of Hong Kong Department of Chemistry HONG KONG
| | - Zhihai Ke
- The Chinese University of Hong Kong - Shenzhen School of Science and Engineering School of Science and Engineering2001 Longxiang Road, Longgang District 518172 Shenzhen CHINA
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10
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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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11
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Liao LL, Wang ZH, Cao KG, Sun GQ, Zhang W, Ran CK, Li Y, Chen L, Cao GM, Yu DG. Electrochemical Ring-Opening Dicarboxylation of Strained Carbon-Carbon Single Bonds with CO 2: Facile Synthesis of Diacids and Derivatization into Polyesters. J Am Chem Soc 2022; 144:2062-2068. [PMID: 35084189 DOI: 10.1021/jacs.1c12071] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Diacids are important monomers in the polymer industry to construct valuable materials. Dicarboxylation of unsaturated bonds, such as alkenes and alkynes, with CO2 has been demonstrated as a promising synthetic method. However, dicarboxylation of C─C single bonds with CO2 has rarely been investigated. Herein we report a novel electrochemical ring-opening dicarboxylation of C─C single bonds in strained rings with CO2. Structurally diverse glutaric acid and adipic acid derivatives were synthesized from substituted cyclopropanes and cyclobutanes in moderate to high yields. In contrast to oxidative ring openings, this is also the first realization of an electroreductive ring-opening reaction of strained rings, including commercialized ones. Control experiments suggested that radical anions and carbanions might be the key intermediates in this reaction. Moreover, this process features high step and atom economy, mild reaction conditions (1 atm, room temperature), good chemoselectivity and functional group tolerance, low electrolyte concentration, and easy derivatization of the products. Furthermore, we conducted polymerization of the corresponding diesters with diols to obtain a potential UV-shielding material with a self-healing function and a fluorine-containing polyester, whose performance tests showed promising applications.
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Affiliation(s)
- Li-Li Liao
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Zhe-Hao Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Ke-Gong Cao
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Guo-Quan Sun
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Wei Zhang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Chuan-Kun Ran
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Yiwen Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Li Chen
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Guang-Mei Cao
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Da-Gang Yu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China.,Beijing National Laboratory for Molecular Sciences, Beijing 100190, People's Republic of China
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12
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Long L, Jieyan W, Li X, Peng S, Qiao L, Luo G, Chen Z. Hypervalent Iodine(III) Promoted Tandem Reaction of o-Fluoroanilines with Formamides to Construct 2-Aminobenzoxazoles. Org Chem Front 2022. [DOI: 10.1039/d2qo00049k] [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
A simple and practical synthesis of 2-aminobenzoxaoles has been developed from commercially available o-fluoroanilines, and formamides. The process can be performed in the absence of metal catalyst with high levels...
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13
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Zuo Z, Daniliuc CG, Studer A. Cooperative NHC/Photoredox Catalyzed Ring‐Opening of Aryl Cyclopropanes to 1‐Aroyloxylated‐3‐Acylated Alkanes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110304] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhijun Zuo
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Armido Studer
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
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14
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Zuo Z, Daniliuc CG, Studer A. Cooperative NHC/Photoredox Catalyzed Ring-Opening of Aryl Cyclopropanes to 1-Aroyloxylated-3-Acylated Alkanes. Angew Chem Int Ed Engl 2021; 60:25252-25257. [PMID: 34580972 PMCID: PMC9298441 DOI: 10.1002/anie.202110304] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/18/2021] [Indexed: 12/30/2022]
Abstract
Cyclopropanes are an important class of building blocks in organic synthesis. Herein, a ring‐opening/arylcarboxylation/acylation cascade reaction for the 1,3‐difunctionalization of aryl cyclopropanes enabled by cooperative NHC and organophotoredox catalysis is reported. The cascade works on monosubstituted cyclopropanes that are in contrast to the heavily investigated donor–acceptor cyclopropanes more challenging to be difunctionalized. The key step is a radical/radical cross coupling of a benzylic radical generated in the photoredox catalysis cycle with a ketyl radical from the NHC catalysis cycle. The transformation features metal‐free reaction conditions and tolerates a diverse range of functionalities.
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Affiliation(s)
- Zhijun Zuo
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149, Münster, Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149, Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149, Münster, Germany
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15
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Pan L, Ke Z, Yeung YY. Lewis Base Catalyzed Dioxygenation of Olefins with Hypervalent Iodine Reagents. Org Lett 2021; 23:8174-8178. [PMID: 34632779 DOI: 10.1021/acs.orglett.1c02872] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
1,2-Diols are extremely useful building blocks in organic synthesis. Hypervalent iodine reagents are useful for the vicinal dihydroxylation of olefins to give 1,2-diols under metal-free conditions, but strongly acidic promoters are often required. Herein, we report a catalytic vicinal dioxygenation of olefins with hypervalent iodine reagents using Lewis bases as catalysts. The conditions are mild and compatible with various functional groups.
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Affiliation(s)
- Liangkun Pan
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Zhihai Ke
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Ying-Yeung Yeung
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
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16
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Ren J, Du FH, Jia MC, Hu ZN, Chen Z, Zhang C. Ring Expansion Fluorination of Unactivated Cyclopropanes Mediated by a New Monofluoroiodane(III) Reagent. Angew Chem Int Ed Engl 2021; 60:24171-24178. [PMID: 34523779 DOI: 10.1002/anie.202108589] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 09/03/2021] [Indexed: 11/08/2022]
Abstract
Herein, we report a new strategy for carbon-carbon bond scission and intramolecular ring expansion fluorination of unactivated cyclopropanes, which was accomplished with a new hypervalent fluoroiodane(III) reagent 1. This novel method delivers medicinally relevant 4-fully substituted fluoropiperidines in moderate to high yields with excellent regio- and diastereoselectivity. Reagent 1, which has an N-acetylbenziodazole framework, was readily synthesized via three steps in 76 % overall yield and was characterized by NMR spectroscopy and X-ray crystallography. Owing to the presence of a secondary I⋅⋅⋅O bonding interaction between the λ3 -iodane atom and the carbonyl oxygen of the acetyl group of the N-acetylbenziodazole framework, 1 has excellent stability and can be stored at ambient temperature for 6 months without any detectable decomposition. Density functional theory calculations and experimental studies showed that the reaction proceeds via a carbocation intermediate that readily combines with a fluoride ion to generate the product.
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Affiliation(s)
- Jing Ren
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Feng-Huan Du
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Meng-Cheng Jia
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Ze-Nan Hu
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Ze Chen
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Chi Zhang
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
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17
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Ren J, Du F, Jia M, Hu Z, Chen Z, Zhang C. Ring Expansion Fluorination of Unactivated Cyclopropanes Mediated by a New Monofluoroiodane(III) Reagent. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jing Ren
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Feng‐Huan Du
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Meng‐Cheng Jia
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Ze‐Nan Hu
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Ze Chen
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Chi Zhang
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
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18
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Taily IM, Saha D, Banerjee P. Arylcyclopropane yet in its infancy: the challenges and recent advances in its functionalization. Org Biomol Chem 2021; 19:8627-8645. [PMID: 34549770 DOI: 10.1039/d1ob01432c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Electronically unbiased arylcyclopropane functionalization has always been a challenge to organic chemists, and the emergence of donor-acceptor cyclopropanes (DACs) has not only vehemently overshadowed them but still dominates the cyclopropane chemistry. Unlike DACs, the absence of pre-installed functional groups makes it harder for them to activate and participate in a reaction. The field has witnessed considerably slow progress since its inception due to the inherent challenges. There are only a few strategies available to open arylcyclopropanes. Therefore, this work is still in its infancy stage in spite of these materials being one of the earliest known type of cyclopropanes. This review manifests the history, endeavors, and achievements alongside the associated challenges, opportunities, and the need for concerted efforts to accomplish the long-awaited golden age of arylcyclopropanes.
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Affiliation(s)
- Irshad Maajid Taily
- Department of Chemistry, Indian Institute of Technology, Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
| | - Debarshi Saha
- Department of Chemistry, Indian Institute of Technology, Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology, Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
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19
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Saha D, Maajid Taily I, Banerjee P. Electricity Driven 1,3‐Oxohydroxylation of Donor‐Acceptor Cyclopropanes: a Mild and Straightforward Access to β‐Hydroxy Ketones. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101022] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Debarshi Saha
- Department of Chemistry Indian Institute of Technology Ropar Rupnagar Punjab 140001
| | - Irshad Maajid Taily
- Department of Chemistry Indian Institute of Technology Ropar Rupnagar Punjab 140001
| | - Prabal Banerjee
- Department of Chemistry Indian Institute of Technology Ropar Rupnagar Punjab 140001
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20
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Electrochemical C-C bond cleavage of cyclopropanes towards the synthesis of 1,3-difunctionalized molecules. Nat Commun 2021; 12:3075. [PMID: 34031421 PMCID: PMC8144616 DOI: 10.1038/s41467-021-23401-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 04/23/2021] [Indexed: 02/04/2023] Open
Abstract
Electrochemistry has a lot of inherent advantages in organic synthesis and many redox reactions have been achieved under electrochemical condition. However, the electrochemical C-C bond cleavage and functionalization reactions are less studied. Here we develop electrochemical C-C bond cleavage and 1,3-difuntionalization of arylcyclopropanes under catalyst-free and external-oxidant-free conditions. 1,3-difluorination, 1,3-oxyfluorination and 1,3-dioxygenation of arylcyclopropanes are achieved with a high chemo- and regioselectivity by the strategic choice of nucleophiles. This protocol has good functional groups tolerance and can be scaled up. Mechanistic studies demonstrate that arylcyclopropane radical cation obtained from the anode oxidation and the subsequently generated benzyl carbonium are the key intermediates in this transformation. This development provides a scenario for constructing 1,3-difunctionalized molecules.
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21
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Qiao X, Lin Y, Li J, Ma W, Zhao J. All at once arrangement of both oxygen atoms of dioxygen into aliphatic C(sp3)-C(sp3) bonds for hydroxyketone difunctionalization. Sci China Chem 2021. [DOI: 10.1007/s11426-020-9949-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Intermolecular Electrophilic Bromoesterification and Bromoetherification of Unactivated Cyclopropanes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901665] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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23
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Deng R, Zhan S, Li C, Gu Z. Hypervalent‐Iodine‐Mediated Carbon–Carbon Bond Cleavage and Dearomatization of 9
H
‐Fluoren‐9‐ols. Angew Chem Int Ed Engl 2020; 59:3093-3098. [DOI: 10.1002/anie.201913373] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 11/23/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Ruixian Deng
- Department of ChemistryCenter for Excellence in Molecular SynthesisHefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Shuming Zhan
- Department of ChemistryCenter for Excellence in Molecular SynthesisHefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Chunyu Li
- Department of ChemistryCenter for Excellence in Molecular SynthesisHefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Zhenhua Gu
- Department of ChemistryCenter for Excellence in Molecular SynthesisHefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
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24
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Deng R, Zhan S, Li C, Gu Z. Hypervalent‐Iodine‐Mediated Carbon–Carbon Bond Cleavage and Dearomatization of 9
H
‐Fluoren‐9‐ols. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913373] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Ruixian Deng
- Department of Chemistry Center for Excellence in Molecular Synthesis Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Shuming Zhan
- Department of Chemistry Center for Excellence in Molecular Synthesis Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Chunyu Li
- Department of Chemistry Center for Excellence in Molecular Synthesis Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Zhenhua Gu
- Department of Chemistry Center for Excellence in Molecular Synthesis Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
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25
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Luo N, Liu J, Wang S, Wang C. DBU-promoted ring-opening reactions of multi-substituted donor–acceptor cyclopropanes: access to functionalized chalcones with a quaternary carbon group. Org Biomol Chem 2020; 18:9210-9215. [DOI: 10.1039/d0ob01895c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A strategy to synthesize highly stereoselective chalcones with alkylcyanoacetate subunits via DBU-promoted ring-opening reactions of multi-substituted D–A cyclopropanes has been developed without the requirement of a transition metal catalyst and extra solvent.
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Affiliation(s)
- Naili Luo
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- P. R. China
| | - Jiamin Liu
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- P. R. China
| | - Shan Wang
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- P. R. China
| | - Cunde Wang
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- P. R. China
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26
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Kuboki Y, Arisawa M, Murai K. Ring-opening 1,3-arylboration of arylcyclopropanes mediated by BCl3. RSC Adv 2020; 10:37797-37799. [PMID: 35515187 PMCID: PMC9057229 DOI: 10.1039/d0ra08151e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 10/07/2020] [Indexed: 12/26/2022] Open
Abstract
Herein, we report a ring-opening 1,3-arylboration of aryl cyclopropanes using BCl3 in the presence of arene nucleophiles.
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Affiliation(s)
- Yuichi Kuboki
- Graduate School of Pharmaceutical Sciences
- Osaka University
- Suita
- Japan
| | - Mitsuhiro Arisawa
- Graduate School of Pharmaceutical Sciences
- Osaka University
- Suita
- Japan
| | - Kenichi Murai
- Graduate School of Pharmaceutical Sciences
- Osaka University
- Suita
- Japan
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27
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Wang L, Zhao J, Sun Y, Zhang HY, Zhang Y. A Catalyst-Free Minisci-Type Reaction: the C-H Alkylation of Quinoxalinones with Sodium Alkylsulfinates and Phenyliodine(III) Dicarboxylates. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901266] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Liping Wang
- School of Chemical Engineering and Technology; Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, Tianjin Key Laboratory of Chemical Process Safety; Hebei University of Technology; Guangrong Road No. 8 300130 Tianjin P. R. China
| | - Jiquan Zhao
- School of Chemical Engineering and Technology; Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, Tianjin Key Laboratory of Chemical Process Safety; Hebei University of Technology; Guangrong Road No. 8 300130 Tianjin P. R. China
| | - Yuting Sun
- School of Chemical Engineering and Technology; Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, Tianjin Key Laboratory of Chemical Process Safety; Hebei University of Technology; Guangrong Road No. 8 300130 Tianjin P. R. China
| | - Hong-Yu Zhang
- School of Chemical Engineering and Technology; Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, Tianjin Key Laboratory of Chemical Process Safety; Hebei University of Technology; Guangrong Road No. 8 300130 Tianjin P. R. China
| | - Yuecheng Zhang
- School of Chemical Engineering and Technology; Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, Tianjin Key Laboratory of Chemical Process Safety; Hebei University of Technology; Guangrong Road No. 8 300130 Tianjin P. R. China
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28
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Photoredox-catalyzed oxo-amination of aryl cyclopropanes. Nat Commun 2019; 10:4367. [PMID: 31554813 PMCID: PMC6761154 DOI: 10.1038/s41467-019-12403-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 09/03/2019] [Indexed: 01/14/2023] Open
Abstract
Cyclopropanes represent a class of versatile building blocks in modern organic synthesis. While the release of ring strain offers a thermodynamic driving force, the control of selectivity for C–C bond cleavage and the subsequent regiochemistry of the functionalization remains difficult, especially for unactivated cyclopropanes. Here we report a photoredox-coupled ring-opening oxo-amination of electronically unbiased cyclopropanes, which enables the expedient construction of a host of structurally diverse β-amino ketone derivatives. Through one electron oxidation, the relatively inert aryl cyclopropanes are readily converted into reactive radical cation intermediates, which in turn participate in the ensuing ring-opening functionalizations. Based on mechanistic studies, the present oxo-amination is proposed to proceed through an SN2-like nucleophilic attack/ring-opening manifold. This protocol features wide substrate scope, mild reaction conditions, and use of dioxygen as an oxidant both for catalyst regeneration and oxygen-incorporation. Moreover, a one-pot formal aminoacylation of olefins is described through a sequential cyclopropanation/oxo-amination. The ring-opening and functionalization of electronically unbiased cyclopropanes is highly challenging to achieve in a regioselective fashion. Here, the authors report a mild photoredox-coupled oxoamination of electronically unactivated aryl cyclopropanes with simple azaarenes and molecular oxygen.
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29
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Jang WJ, Song SM, Park Y, Yun J. Asymmetric Synthesis of γ-Hydroxy Pinacolboronates through Copper-Catalyzed Enantioselective Hydroboration of α,β-Unsaturated Aldehydes. J Org Chem 2019; 84:4429-4434. [PMID: 30895787 DOI: 10.1021/acs.joc.8b03045] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a copper-catalyzed enantioselective hydroboration of α,β-unsaturated aldehydes with pinacolborane. α,β-Unsaturated aldehydes were converted to the corresponding γ-pinacolboronate alcohols in good yields and enantioselectivities through consecutive hydroboration of the C═O and C═C bonds. This process provides simple access to the hydroborated product of allylic alcohols, and the resulting γ-pinacolboronate alcohols could be utilized in various transformations.
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Affiliation(s)
- Won Jun Jang
- Department of Chemistry , Sungkyunkwan University , Suwon 16419 , Korea
| | - Seung Min Song
- Department of Chemistry , Sungkyunkwan University , Suwon 16419 , Korea
| | - Yeji Park
- Department of Chemistry , Sungkyunkwan University , Suwon 16419 , Korea
| | - Jaesook Yun
- Department of Chemistry , Sungkyunkwan University , Suwon 16419 , Korea
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30
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Skvorcova M, Lukasevics LT, Jirgensons A. Amination of Carbenium Ions Generated by Directed Protonolysis of Cyclopropane. J Org Chem 2019; 84:3780-3792. [DOI: 10.1021/acs.joc.8b02576] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Marija Skvorcova
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | | | - Aigars Jirgensons
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
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31
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Wang L, Wang X, Zhang G, Yang S, Li Y, Zhang Q. Copper-catalyzed 1,3-aminoazidation of arylcyclopropanes: a facile access to 1,3-diamine derivatives. Org Chem Front 2019. [DOI: 10.1039/c9qo00638a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Copper-catalyzed 1,3-aminoazidation of arylcyclopropanes with N-fluorobenzenesulfonimide (NFSI) and trimethylsilyl azide (TMSN3) has been developed, providing various 1,3-diamine derivatives in moderate to good yields under mild conditions.
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Affiliation(s)
- Lihong Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Xiaomin Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Ge Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Shengbiao Yang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Yan Li
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Qian Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
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32
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Wang D, Xue X, Houk KN, Shi Z. Mild Ring‐Opening 1,3‐Hydroborations of Non‐Activated Cyclopropanes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811036] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Di Wang
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Xiao‐Song Xue
- Department of Chemistry and BiochemistryUniversity of California Los Angeles CA 90095 USA
- State Key Laboratory of Elemento-organic ChemistryCollege of ChemistryNankai University Tianjin 300071 China
| | - Kendall N. Houk
- Department of Chemistry and BiochemistryUniversity of California Los Angeles CA 90095 USA
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
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33
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Wang D, Xue X, Houk KN, Shi Z. Mild Ring‐Opening 1,3‐Hydroborations of Non‐Activated Cyclopropanes. Angew Chem Int Ed Engl 2018; 57:16861-16865. [DOI: 10.1002/anie.201811036] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Di Wang
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Xiao‐Song Xue
- Department of Chemistry and BiochemistryUniversity of California Los Angeles CA 90095 USA
- State Key Laboratory of Elemento-organic ChemistryCollege of ChemistryNankai University Tianjin 300071 China
| | - Kendall N. Houk
- Department of Chemistry and BiochemistryUniversity of California Los Angeles CA 90095 USA
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
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34
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Zheng L, Zhou B, Jin H, Li T, Liu Y. Radical-Triggered Tandem Cyclization of 1,6-Enynes with H2O: A Way to Access Strained 1H-Cyclopropa[b]naph thalene-2,7-diones. Org Lett 2018; 20:7053-7056. [DOI: 10.1021/acs.orglett.8b03007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Limeng Zheng
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Bingwei Zhou
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Hongwei Jin
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Ting Li
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nangyang, Henan 473061, P. R. China
| | - Yunkui Liu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
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35
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Gieuw MH, Leung VMY, Ke Z, Yeung YY. Electrophilic Bromolactonization of Cyclopropyl Diesters Using Lewis Basic Chalcogenide Catalysts. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800886] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Matthew H. Gieuw
- Department of Chemistry; The Chinese University of Hong Kong; Shatin, NT, Hong Kong People's Republic of China
| | - Vincent Ming-Yau Leung
- Department of Chemistry; The Chinese University of Hong Kong; Shatin, NT, Hong Kong People's Republic of China
| | - Zhihai Ke
- Department of Chemistry; The Chinese University of Hong Kong; Shatin, NT, Hong Kong People's Republic of China
| | - Ying-Yeung Yeung
- Department of Chemistry; The Chinese University of Hong Kong; Shatin, NT, Hong Kong People's Republic of China
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36
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Chennaiah A, Verma AK, Vankar YD. TEMPO-Catalyzed Oxidation of 3- O-Benzylated/Silylated Glycals to the Corresponding Enones Using a PIFA-Water Reagent System. J Org Chem 2018; 83:10535-10540. [PMID: 30124295 DOI: 10.1021/acs.joc.8b01191] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A simple, highly efficient and regiospecific method for the direct conversion of 3- O-benzylated as well as silylated glycals into the corresponding enones has been developed using PIFA-TEMPO and water reagent system. The reaction is scalable on a gram scale under mild conditions with a yield up to 86%.
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Affiliation(s)
- Ande Chennaiah
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur 208016 , India
| | - Ashish Kumar Verma
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur 208016 , India
| | - Yashwant D Vankar
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur 208016 , India
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