1
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Hou J, Fan H, Zhang X, Liu X, Chen J, Lv G, He S, Hai L, Yang Z, Wu Y. Organic Photoredox-Catalyzed Site-Selective Alkylation of Glycine Derivatives and Peptides via Infrequent 1,2-Hydrogen Atom Transfer of Amidyl Radicals. Org Lett 2024. [PMID: 39230392 DOI: 10.1021/acs.orglett.4c02742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
Herein, we disclose a visible-light-driven photoredox-catalyzed protocol for site-selective alkylation of glycine derivatives via 1,2-hydrogen atom transfer, which is distinguished by metal free and mild conditions, high chemoselectivity, and good functional group compatibility. This protocol provides a unique approach for synthesizing valuable α,β-diamino acid derivatives. Furthermore, the potential synthetic merit of this transformation is proven by a scale-up reaction and late-stage functionalization of peptides.
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Affiliation(s)
- Jinyu Hou
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, No. 17 Southern Renmin Road, Chengdu, Sichuan 610041, People's Republic of China
| | - Hongying Fan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, No. 17 Southern Renmin Road, Chengdu, Sichuan 610041, People's Republic of China
| | - Xue Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, No. 17 Southern Renmin Road, Chengdu, Sichuan 610041, People's Republic of China
| | - Xingyu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, No. 17 Southern Renmin Road, Chengdu, Sichuan 610041, People's Republic of China
| | - Jian Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, No. 17 Southern Renmin Road, Chengdu, Sichuan 610041, People's Republic of China
| | - Guanghui Lv
- Department of Pharmacy, Hubei Provincial Clinical Research Center for Umbilical Cord Blood Hematopoietic Stem Cells, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei, China
| | - Shiyun He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, No. 17 Southern Renmin Road, Chengdu, Sichuan 610041, People's Republic of China
| | - Li Hai
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, No. 17 Southern Renmin Road, Chengdu, Sichuan 610041, People's Republic of China
| | - Zhongzhen Yang
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu 610041 China
| | - Yong Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, No. 17 Southern Renmin Road, Chengdu, Sichuan 610041, People's Republic of China
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2
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Nishikata T. α-Halocarbonyls as a Valuable Functionalized Tertiary Alkyl Source. ChemistryOpen 2024:e202400108. [PMID: 38989712 DOI: 10.1002/open.202400108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/21/2024] [Indexed: 07/12/2024] Open
Abstract
This review introduces the synthetic organic chemical value of α-bromocarbonyl compounds with tertiary carbons. This α-bromocarbonyl compound with a tertiary carbon has been used primarily only as a radical initiator in atom transfer radical polymerization (ATRP) reactions. However, with the recent development of photo-radical reactions (around 2010), research on the use of α-bromocarbonyl compounds as tertiary alkyl radical precursors became popular (around 2012). As more examples were reported, α-bromocarbonyl compounds were studied not only as radicals but also for their applications in organometallic and ionic reactions. That is, α-bromocarbonyl compounds act as nucleophiles as well as electrophiles. The carbonyl group of α-bromocarbonyl compounds is also attractive because it allows the skeleton to be converted after the reaction, and it is being applied to total synthesis. In our survey until 2022, α-bromocarbonyl compounds can be used to perform a full range of reactions necessary for organic synthesis, including multi-component reactions, cross-coupling, substitution, cyclization, rearrangement, stereospecific reactions, asymmetric reactions. α-Bromocarbonyl compounds have created a new trend in tertiary alkylation, which until then had limited reaction patterns in organic synthesis. This review focuses on how α-bromocarbonyl compounds can be used in synthetic organic chemistry.
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Affiliation(s)
- Takashi Nishikata
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
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3
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Ran YS, Jiang B, Shen YT, Fan TG, Jiang W, Zhang C, Li YM. Visible-Light-Promoted Cascade Cyclization of 3-Ethynyl-[1,1'-biphenyl]-2-Carbonitriles with Unsaturated α-Bromocarbonyls. Org Lett 2023; 25:7412-7416. [PMID: 37788358 DOI: 10.1021/acs.orglett.3c02938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
A visible-light-promoted cascade cyclization of 3-ethynyl-[1,1'-biphenyl]-2-carbonitriles with unsaturated α-bromocarbonyls for the synthesis of tetrahydrobenzo[mn]cyclopenta[b]acridines is described. Three C(sp3)-C(sp2) bonds, one C(sp2)-N bond, and three cycles can be formed in a single reaction through the addition of a C-centered radical to the carbon-carbon triple bond and three radical cyclizations. This reaction features mild conditions, wide substrate scope, and high bond-forming efficiency.
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Affiliation(s)
- Yu-Song Ran
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Bo Jiang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Yun-Tao Shen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Tai-Gang Fan
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Wei Jiang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Cui Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Ya-Min Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
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4
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Jiang Y, Liu D, Rotella ME, Deng G, Liu Z, Chen W, Zhang H, Kozlowski MC, Walsh PJ, Yang X. Net-1,2-Hydrogen Atom Transfer of Amidyl Radicals: Toward the Synthesis of 1,2-Diamine Derivatives. J Am Chem Soc 2023; 145:16045-16057. [PMID: 37441806 PMCID: PMC10411589 DOI: 10.1021/jacs.3c04376] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/15/2023]
Abstract
Hydrogen atom transfer (HAT) processes are among the most useful approaches for the selective construction of C(sp3)-C(sp3) bonds. 1,5-HAT with heteroatom-centered radicals (O•, N•) have been well established and are favored relative to other 1,n-HAT processes. In comparison, net 1,2-HAT processes have been observed infrequently. Herein, the first amidyl radicalls are reported that preferentially undergo a net 1,2-HAT over 1,5-HAT. Beginning with single electron transfer from 2-azaallyl anions to N-alkyl N-aryloxy amides, the latter generate amidyl radicals. The amidyl radical undergoes a net-1,2-HAT to generate a C-centered radical that participates in an intermolecular radical-radical coupling with the 2-azaallyl radical to generate 1,2-diamine derivatives. Mechanistic and EPR experiments point to radical intermediates. Density functional theory calculations provide support for a base-assisted, stepwise-1,2-HAT process. It is proposed that the generation of amidyl radicals under basic conditions can be greatly expanded to access α-amino C-centered radicals that will serve as valuable synthetic intermediates.
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Affiliation(s)
- Yonggang Jiang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming, 650500, P. R. China
| | - Dongxiang Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming, 650500, P. R. China
| | - Madeline E. Rotella
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania, 19104, United States
| | - Guogang Deng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming, 650500, P. R. China
| | - Zhengfen Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming, 650500, P. R. China
| | - Wen Chen
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming, 650500, P. R. China
| | - Hongbin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming, 650500, P. R. China
| | - Marisa C. Kozlowski
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania, 19104, United States
| | - Patrick J. Walsh
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania, 19104, United States
| | - Xiaodong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming, 650500, P. R. China
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5
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Liu K, Li F, Wang J, Zhang Z, Du F, Su H, Wang Y, Yuan Q, Li F, Wang T. Silver-catalyzed cyclization of α-imino-oxy acids to fused tetralone derivatives. Org Biomol Chem 2023; 21:2700-2704. [PMID: 36912118 DOI: 10.1039/d2ob02329f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
A silver-catalyzed intramolecular radical relay cyclization of α-imino-oxy acids under mild conditions has been described. This reaction offers facile access to a diverse range of fused tetralone derivatives with exquisite stereoselectivity in moderate to good yields (40-98%). Experimental studies show that the reaction undergoes a decarboxylation and acetone fragmentation/1,5-hydrogen atom transfer (HAT)/cyclization process.
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Affiliation(s)
- Kai Liu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China.
| | - Feng Li
- College of Food Science and Pharmaceutical Engineering, Zaozhuang University, Zaozhuang 277160, China. .,College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Jingjing Wang
- College of Food Science and Pharmaceutical Engineering, Zaozhuang University, Zaozhuang 277160, China. .,College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Zhaowei Zhang
- College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Fengge Du
- College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Hanxiao Su
- College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Yonghong Wang
- College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Qingqing Yuan
- College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Fei Li
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China.
| | - Teng Wang
- School of Chemistry, Beihang University, Beijing, 100191, China.
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6
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Tang B, Liu Y, Lian Y, Liu H. Radical annulation using a radical reagent as a two-carbon unit. Org Biomol Chem 2022; 20:9272-9281. [PMID: 36383141 DOI: 10.1039/d2ob01833k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Radical annulation has emerged as one of the most efficient and straightforward methods for synthesizing cyclic/polycyclic compounds as the core structures can be constructed through a single procedure comprising multiple bond-forming steps. Particularly, radical annulation using a radical reagent as a cyclization partner and two-carbon unit greatly expands the diversity of cyclic skeletons and the functionality of radical reagents. We herein have highlighted the representative processes reported in the past decade for radical annulation using a radical reagent as a two-carbon unit, including [2 + 2 + 2], [3 + 2], [4 + 2], and [5 + 2] modes, with an emphasis on their reaction mechanisms. These studies not only pave the way toward annulation but also provide insight into the exploration of a new reaction mode for radical chemistry.
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Affiliation(s)
- Boxiao Tang
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Material, Institute of Organic Synthesis, Huaihua University, Huaihua 418000, China.
| | - Yilin Liu
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Material, Institute of Organic Synthesis, Huaihua University, Huaihua 418000, China.
| | - Yan Lian
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Material, Institute of Organic Synthesis, Huaihua University, Huaihua 418000, China.
| | - Hongxin Liu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China.
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7
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Wang K, Yu Q, Mao W, Zheng Y, Xu J, Wang Y. Copper-catalyzed radical trans-selective hydroboration of ynamides with N-heterocyclic carbene boranes. iScience 2022; 25:104977. [PMID: 36065185 PMCID: PMC9440302 DOI: 10.1016/j.isci.2022.104977] [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: 06/06/2022] [Revised: 08/05/2022] [Accepted: 08/15/2022] [Indexed: 11/16/2022] Open
Abstract
Vinylboron compounds are important compounds in organic chemistry and biology. In this communication, we developed a copper(I)-catalyzed, highly regio- and stereoselective radical trans-hydroboration of ynamides with N-heterocyclic carbene (NHC)-ligated borane is reported, which leads to a series of trans-boryl enmides that can be conveniently transformed into various multi-substituted enamides. Further investigation showcased that our method is robust and scalable. The mechanism of this unique reaction is studied and discussed. A Cu-catalyzed highly regio- and stereoselective radical trans-hydroboration of ynamides Good to excellent yields, good functional group tolerance Further investigation showcased that our method is robust and scalable
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Affiliation(s)
- Kefeng Wang
- Department of Pharmacology, School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qingzhen Yu
- Clinical Medical Research Center, Southern University of Science and Technology Hospital, Shenzhen 518055, China
| | - Wenli Mao
- Department of Pharmacology, School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yuxin Zheng
- Department of Pharmacology, School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jing Xu
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
- Corresponding author
| | - Yukun Wang
- Department of Pharmacology, School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
- Department of Pharmacy, Southern University of Science and Technology Hospital, Shenzhen 518055, China
- Corresponding author
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8
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9
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Wang CY, Yu JX, Liu B, Zhang F, Wang ZQ, Xu ZF, Hu QY, Li JH. Metal-/solvent-free oxidative [4+2]/[3+2] annulation of 2-ethynylbenzaldehydes with arylalkenes: Facile synthesis of benzo[a]fluoren-5-ones. Org Chem Front 2022. [DOI: 10.1039/d1qo01888d] [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
We report here a DTBP-mediated oxidative [4+2]/[3+2] annulation between 2-alkynylbenzaldehydes and terminal arylalkenes enabled by aldehyde C(sp2)-H functionalization for assembling a range of benzo[a]fluoren-5-ones with high step-economy, simple operations under...
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10
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Copper-catalyzed radical cascade cyclization of 2-(allyloxy)arylaldehydes towards chroman-4-one derivatives. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Liu XJ, Zhou SY, Xiao Y, Sun Q, Lu X, Li Y, Li JH. Photocatalytic Decarboxylative [3 + 2] and [4 + 2] Annulation of Enynals and γ,σ-Unsaturated N-(Acyloxy)phthalimides by NaI/PPh 3 Catalysis. Org Lett 2021; 23:7839-7844. [PMID: 34581593 DOI: 10.1021/acs.orglett.1c02858] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A practical and eco-friendly strategy for the radical-mediated decarboxylative [3 + 2] and [4 + 2] annulation of enynals and γ,σ-unsaturated N-(acyloxy)phthalimides through the photoactivation of an electron donor-acceptor (EDA) complex has been developed. A wide range of primary, secondary, and tertiary alkyl N-hydroxyphthalimide (NHP) esters can be used as suitable substrates for the synthesis of fused ketones without any transition-metal catalysts or oxidants. This protocol features a broad substrate scope, excellent selectivity, and clean reaction conditions.
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Affiliation(s)
- Xiao-Jie Liu
- Key Laboratory of Jiangxi Province for Persistent Pollutant Control and Resource Recycling, Nanchang Hangkong University, Nanchang 330063, China.,State Key Laboratory of Physical Chemistry of Solid Surface and Fujian Provincial Key Laboratory for Theoretical and Computational Chemistry, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Sheng-Yun Zhou
- Key Laboratory of Jiangxi Province for Persistent Pollutant Control and Resource Recycling, Nanchang Hangkong University, Nanchang 330063, China.,State Key Laboratory of Physical Chemistry of Solid Surface and Fujian Provincial Key Laboratory for Theoretical and Computational Chemistry, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yuting Xiao
- Key Laboratory of Jiangxi Province for Persistent Pollutant Control and Resource Recycling, Nanchang Hangkong University, Nanchang 330063, China.,State Key Laboratory of Physical Chemistry of Solid Surface and Fujian Provincial Key Laboratory for Theoretical and Computational Chemistry, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Qing Sun
- Key Laboratory of Jiangxi Province for Persistent Pollutant Control and Resource Recycling, Nanchang Hangkong University, Nanchang 330063, China.,State Key Laboratory of Physical Chemistry of Solid Surface and Fujian Provincial Key Laboratory for Theoretical and Computational Chemistry, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xin Lu
- Key Laboratory of Jiangxi Province for Persistent Pollutant Control and Resource Recycling, Nanchang Hangkong University, Nanchang 330063, China.,State Key Laboratory of Physical Chemistry of Solid Surface and Fujian Provincial Key Laboratory for Theoretical and Computational Chemistry, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yang Li
- Key Laboratory of Jiangxi Province for Persistent Pollutant Control and Resource Recycling, Nanchang Hangkong University, Nanchang 330063, China.,State Key Laboratory of Physical Chemistry of Solid Surface and Fujian Provincial Key Laboratory for Theoretical and Computational Chemistry, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutant Control and Resource Recycling, Nanchang Hangkong University, Nanchang 330063, China.,State Key Laboratory of Physical Chemistry of Solid Surface and Fujian Provincial Key Laboratory for Theoretical and Computational Chemistry, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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12
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Zhu H, Zheng H, Zhang J, Feng J, Kong L, Zhang F, Xue XS, Zhu G. Solvent-controlled photocatalytic divergent cyclization of alkynyl aldehydes: access to cyclopentenones and dihydropyranols. Chem Sci 2021; 12:11420-11426. [PMID: 34567496 PMCID: PMC8409468 DOI: 10.1039/d1sc03416b] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 07/26/2021] [Indexed: 01/20/2023] Open
Abstract
Divergent synthesis is a powerful strategy for the fast assembly of different molecular scaffolds from identical starting materials. We describe here a solvent-controlled photocatalytic divergent cyclization of alkynyl aldehydes with sulfonyl chlorides for the direct construction of highly functionalized cyclopentenones and dihydropyranols that widely exist in bioactive molecules and natural products. Density functional theory calculations suggest that a unique N,N-dimethylacetamide-assisted 1,2-hydrogen transfer of alkoxy radicals is responsible for the cyclopentenone formation, whereas a C–C cleavage accounts for the selective production of dihydropyranols in acetonitrile and water at 50 °C. Given the simple and mild reaction conditions, excellent functional group compatibility, forming up to four chemical bonds, and tunable selectivity, it may find wide applications in synthetic chemistry. A solvent-controlled photocatalytic divergent cyclization of alkynyl aldehydes is developed, providing a facile access to sulfonylated cyclopentenones and dihydropyranols under mild conditions.![]()
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Affiliation(s)
- Haiqian Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University 688 Yingbin Road Jinhua 321004 P. R. China
| | - Hanliang Zheng
- State Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 P. R. China
| | - Junhua Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University 688 Yingbin Road Jinhua 321004 P. R. China
| | - Jian Feng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University 688 Yingbin Road Jinhua 321004 P. R. China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University 688 Yingbin Road Jinhua 321004 P. R. China
| | - Fang Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University 688 Yingbin Road Jinhua 321004 P. R. China
| | - Xiao-Song Xue
- State Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 P. R. China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University 688 Yingbin Road Jinhua 321004 P. R. China
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13
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Xiao L, Lang TT, Jiang Y, Zang ZL, Zhou CH, Cai GX. Aerobic Copper-Catalyzed Salicylaldehydic C formyl -H Arylations with Arylboronic Acids. Chemistry 2021; 27:3278-3283. [PMID: 33289166 DOI: 10.1002/chem.202004810] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/01/2020] [Indexed: 12/15/2022]
Abstract
We report a challenging copper-catalyzed Cformyl -H arylation of salicylaldehydes with arylboronic acids that involves unique salicylaldehydic copper species that differ from reported salicylaldehydic rhodacycles and palladacycles. This protocol has high chemoselectivity for the Cformyl -H bond compared to the phenolic O-H bond involving copper catalysis under high reaction temperatures. This approach is compatible with a wide range of salicylaldehyde and arylboronic acid substrates, including estrone and carbazole derivatives, which leads to the corresponding arylation products. Mechanistic studies show that the 2-hydroxy group of the salicylaldehyde substrate triggers the formation of salicylaldehydic copper complexes through a CuI /CuII /CuIII catalytic cycle.
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Affiliation(s)
- Lin Xiao
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
| | - Tao-Tao Lang
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
| | - Ying Jiang
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
| | - Zhong-Lin Zang
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
| | - Cheng-He Zhou
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
| | - Gui-Xin Cai
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
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14
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Zhu B, Han H, Su W, Yu C, Jiang X. Free‐radical Initialized Cyclization of 2‐(3‐Arylpropioloyl)benzaldehydes with Toluene Derivatives: Access to Benzylated 1,4‐Naphthoquinones via Copper‐Catalyzed Cascade Reaction. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000975] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Bingbin Zhu
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Hang Han
- College of pharmaceutical sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Wei‐Ke Su
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chuanming Yu
- College of pharmaceutical sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Xinpeng Jiang
- College of pharmaceutical sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
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15
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Zhou Y, Wu M, Liu Y, Cheng C, Zhu G. Synthesis of Polysubstituted Pyrroles via Silver-Catalyzed Oxidative Radical Addition of Cyclopropanols to Imines. Org Lett 2020; 22:7542-7546. [PMID: 32915585 DOI: 10.1021/acs.orglett.0c02735] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A silver-catalyzed formal [3 + 2] cycloaddition reaction, with cyclopropanols as a C3 subunit and imines as a two-atom subunit, is developed. The reaction takes place under mild conditions and produces a broad array of polysubstituted pyrroles in medium to high yields. It represents the first example of oxidative radical addition to imines, thus offering a new choice for the direct C-H functionalization of imines.
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Affiliation(s)
- Yulu Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P.R. China
| | - Mingchang Wu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P.R. China
| | - Yi Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P.R. China
| | - Cungui Cheng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P.R. China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P.R. China
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16
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Liu Q, Lu W, Xie G, Wang X. Metal-free synthesis of phosphinoylchroman-4-ones via a radical phosphinoylation-cyclization cascade mediated by K 2S 2O 8. Beilstein J Org Chem 2020; 16:1974-1982. [PMID: 32831954 PMCID: PMC7431760 DOI: 10.3762/bjoc.16.164] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 07/31/2020] [Indexed: 12/17/2022] Open
Abstract
A variety of chroman-4-ones bearing phosphine oxide motifs were conveniently synthesized from readily available diphenylphosphine oxides and alkenyl aldehydes via a metal-free tandem phosphinoylation/cyclization protocol. The reaction utilizes K2S2O8 as oxidant and proceeds in DMSO/H2O at environmentally benign conditions with a broad substrate scope and afforded the title compounds in moderate yields.
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Affiliation(s)
- Qiang Liu
- Dongguan University of Technology, Dongguan 523808, P. R. China
- Department of Applied Chemistry, School of Science, Xi’an Jiaotong University, Xi’an 710049, P. R. China
| | - Weibang Lu
- Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Guanqun Xie
- Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Xiaoxia Wang
- Dongguan University of Technology, Dongguan 523808, P. R. China
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17
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Han QQ, Li GH, Sun YY, Chen DM, Wang ZL, Yu XY, Xu XM. Silver-catalyzed cascade radical cyclization of sodium sulfinates and o-(allyloxy)arylaldehydes towards functionalized chroman-4-ones. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151704] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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18
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Hirata G, Yamane Y, Tsubaki N, Hara R, Nishikata T. Controlling alkyne reactivity by means of a copper-catalyzed radical reaction system for the synthesis of functionalized quaternary carbons. Beilstein J Org Chem 2020; 16:502-508. [PMID: 32273910 PMCID: PMC7113556 DOI: 10.3762/bjoc.16.45] [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: 12/17/2019] [Accepted: 03/13/2020] [Indexed: 01/06/2023] Open
Abstract
A terminal alkyne is one of the most useful reactants for the synthesis of alkyne and alkene derivatives. Because an alkyne undergoes addition reaction at a C-C triple bond or cross-coupling at a terminal C-H bond. Combining those reaction patterns could realize a new reaction methodology to synthesize complex molecules including C-C multiple bonds. In this report, we found that the reaction of 3 equivalents of terminal alkyne 1 (aryl substituted alkyne) and an α-bromocarbonyl compound 2 (tertiary alkyl radical precursor) undergoes tandem alkyl radical addition/Sonogashira coupling to produce 1,3-enyne compound 3 possessing a quaternary carbon in the presence of a copper catalyst. Moreover, the reaction of α-bromocarbonyl compound 2 and an alkyne 4 possessing a carboxamide moiety undergoes tandem alkyl radical addition/C-H coupling to produce indolinone derivative 5.
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Affiliation(s)
- Goki Hirata
- Graduate School of Science and Engineering, Yamaguchi University 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
| | - Yu Yamane
- Graduate School of Science and Engineering, Yamaguchi University 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
| | - Naoya Tsubaki
- Graduate School of Science and Engineering, Yamaguchi University 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
| | - Reina Hara
- Graduate School of Science and Engineering, Yamaguchi University 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
| | - Takashi Nishikata
- Graduate School of Science and Engineering, Yamaguchi University 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
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19
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Huang HL, Du JY, Li QL, Gao F, Ma CL. Visible-Light-Promoted Cascade Radical Cyclization: Synthesis of Chroman-4-ones and Dihydroquinolin-4-ones. J Org Chem 2020; 85:3963-3972. [PMID: 32037828 DOI: 10.1021/acs.joc.9b03253] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel visible-light photoredox catalysis protocol for the effective and efficient synthesis of 3-substituted chroman-4-ones and 2,3-dihydroquinolin-4(1H)-ones via tandem radical addition/cyclization of alkenyl aldehydes has been described. This reaction features a broad substrate scope, mild reaction conditions, and good functional group tolerance character.
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Affiliation(s)
- Hong-Li Huang
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Ji-Yuan Du
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Qian-Li Li
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Fei Gao
- Institude of Translation Medicine, Shanghai University, Shanghai, 2004444, China
| | - Chun-Lin Ma
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
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20
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Xiong L, Hu H, Wei CW, Yu B. Radical Reactions for the Synthesis of 3-Substituted Chroman-4-ones. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901581] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Li Xiong
- Department of Bioengineering; Zhuhai Campus of Zunyi Medical University; 519041 Zhuhai Guangdong Province China
| | - Hao Hu
- College of Chemistry; Zhengzhou University; 450001 Zhengzhou China
| | - Chuan-Wan Wei
- School of Chemistry and Chemical Engineering; University of South China; 421001 Hengyang China
| | - Bing Yu
- College of Chemistry; Zhengzhou University; 450001 Zhengzhou China
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21
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Zhong LJ, Wang HY, Ouyang XH, Li JH, An DL. Benzylic C–H heteroarylation of N-(benzyloxy)phthalimides with cyanopyridines enabled by photoredox 1,2-hydrogen atom transfer. Chem Commun (Camb) 2020; 56:8671-8674. [DOI: 10.1039/d0cc03619f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Visible light initiated α-C(sp3)–H hetroarylation of N-(benzyloxy)phthalimides with cyanopyridines via 1,2-hydrogen atom transfer is depicted.
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Affiliation(s)
- Long-Jin Zhong
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
| | - Hong-Yu Wang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Xuan-Hui Ouyang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Jin-Heng Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
| | - De-Lie An
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- China
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22
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Zhang J, Liu D, Liu S, Ge Y, Lan Y, Chen Y. Visible-Light-Induced Alkoxyl Radicals Enable α-C(sp 3)-H Bond Allylation. iScience 2019; 23:100755. [PMID: 31884167 PMCID: PMC6941871 DOI: 10.1016/j.isci.2019.100755] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 11/08/2019] [Accepted: 11/27/2019] [Indexed: 11/18/2022] Open
Abstract
The alkoxyl radical is an essential reactive intermediate in mechanistic studies and organic synthesis with hydrogen atom transfer (HAT) reactivity. However, compared with intramolecular 1,5-HAT or intermolecular HAT of alkoxyl radicals, the intramolecular 1,2-HAT reactivity has been limited to theoretical studies and rarely synthetically utilized. Here we report the first selective 1,2-HAT of alkoxyl radicals for α-C(sp3)-H bond allylation of α-carbonyl, α-cyano, α-trifluoromethyl, and benzylic N-alkoxylphthalimides. The mechanistic probing experiments, electron paramagnetic resonance (EPR) studies, and density functional theory (DFT) calculations confirmed the 1,2-HAT reactivity of alkoxyl radicals, and the use of protic solvents lowered the activation energy by up to 10.4 kcal/mol to facilitate the α-C(sp3)-H allylation reaction.
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Affiliation(s)
- Jing Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Dan Liu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Song Liu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
| | - Yuanyuan Ge
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yu Lan
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China; Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China.
| | - Yiyun Chen
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
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23
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Wang F, Meng Q. Density Functional Computations for Co(I)‐Catalyzed Intermolecular Hydroacylation of Benzaldehydes. ChemistrySelect 2019. [DOI: 10.1002/slct.201902097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Fen Wang
- College of Chemistry and Chemical EngineeringTaishan University, Taian Shandong 271021 People's Republic of China
| | - Qingxi Meng
- College of Chemistry and Material ScienceShandong Agricultural University, Taian Shandong 271018 People's Republic of China
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24
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Synthesis of chroman-4-one and indanone derivatives via silver catalyzed radical ring opening/coupling/cyclization cascade. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130490] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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25
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Wu M, Yang J, Luo F, Cheng C, Zhu G. Iron-catalyzed domino Knoevenagel-hetero-Diels-Alder reaction: facile access to oxabicyclo[3.3.1]nonene derivatives. Org Biomol Chem 2019; 17:5684-5687. [PMID: 31134253 DOI: 10.1039/c9ob00836e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A Fe-catalyzed domino Knoevenagel-hetero-Diels-Alder reaction of alkenyl aldehydes and 1,3-diketones has been developed. It provides straightforward access to a series of oxabicyclo[3.3.1]nonene derivatives in promising yields with excellent diastereoselectivity and functional group tolerance. The resultant bridged dihydropyrans can be smoothly converted into chromene derivatives, thus highlighting the synthetic utility of this method.
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Affiliation(s)
- Mingchang Wu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China.
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26
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Wan Y, Shang T, Lu Z, Zhu G. Photocatalytic 1,1-Hydrofluoroalkylation of Alkynes with a Concurrent Vicinal Acylation: An Access to Fluoroalkylated Cyclic Ketones. Org Lett 2019; 21:4187-4191. [DOI: 10.1021/acs.orglett.9b01366] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yimei Wan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People’s Republic of China
| | - Tianbo Shang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People’s Republic of China
| | - Zenghui Lu
- Wanzhou Ecological Environment Monitoring Station, 83 Anning Road, Wanzhou, Chongqing 404000, People’s Republic of China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People’s Republic of China
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27
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Zhou N, Wu M, Zhang M, Zhou X. Visible‐Light‐Induced Difluoroacetylation of O‐(Allyloxy)Aryl‐Aldehydes: Access to Difluoroacetylated Chroman‐4‐ones. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900121] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nengneng Zhou
- Key Laboratory of Functionalized Molecular Solids Ministry of Education Anhui Key Laboratory of Molecule-Based Materials College of Chemistry and Materials ScienceAnhui Normal University Wuhu, Anhui 241000 China
| | - Meixia Wu
- Key Laboratory of Functionalized Molecular Solids Ministry of Education Anhui Key Laboratory of Molecule-Based Materials College of Chemistry and Materials ScienceAnhui Normal University Wuhu, Anhui 241000 China
| | - Man Zhang
- Key Laboratory of Functionalized Molecular Solids Ministry of Education Anhui Key Laboratory of Molecule-Based Materials College of Chemistry and Materials ScienceAnhui Normal University Wuhu, Anhui 241000 China
| | - Xiaoqiang Zhou
- College of chemistry and materialWeinan Normal University Weinan 714099, Shaanxi province China
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28
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Zhang Y, Huang C, Lin X, Hu Q, Hu B, Zhou Y, Zhu G. Modular Synthesis of Alkylarylazo Compounds via Iron(III)-Catalyzed Olefin Hydroamination. Org Lett 2019; 21:2261-2264. [PMID: 30869900 DOI: 10.1021/acs.orglett.9b00540] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel Fe-catalyzed olefin hydroamination with aryldiazo sulfones for accessing alkylarylazo compounds has been successfully developed. Aryldiazo sulfones are used as radical acceptors, and N-N double bonds will be regenerated when an arene sulfonyl group leaves. The reaction features mild reaction conditions and a broad substrate scope, allowing access to many azo compounds that would be difficult or perhaps impossible to access using other methods.
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Affiliation(s)
- Yan Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China
| | - Chenchao Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China
| | - Xinru Lin
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China
| | - Qi Hu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China
| | - Boyue Hu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China
| | - Yulu Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China
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29
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Zhou Y, Xiong Z, Qiu J, Kong L, Zhu G. Visible light photocatalytic acyldifluoroalkylation of unactivated alkenes for the direct synthesis of gem-difluorinated ketones. Org Chem Front 2019. [DOI: 10.1039/c9qo00136k] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photoredox-catalyzed alkene acyldifluoroalkylation with difluoroacetic acids for the direct synthesis of gem-difluorinated cyclic ketones is developed.
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Affiliation(s)
- Yulu Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Zhimin Xiong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Jiayan Qiu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
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30
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Sheng J, Liu J, Chen L, Zhang L, Zheng L, Wei X. Silver-catalyzed cascade radical cyclization of 2-(allyloxy)arylaldehydes with cyclopropanols: access to chroman-4-one derivatives. Org Chem Front 2019. [DOI: 10.1039/c9qo00292h] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A convenient silver-catalyzed cascade radical cyclization of 2-(allyloxy)arylaldehydes with cyclopropanols was developed to synthesize carbonyl-containing alkyl-substituted chroman-4-one derivatives.
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Affiliation(s)
- Jie Sheng
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou
- P. R. China
| | - Jidan Liu
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou
- P. R. China
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
| | - Liuqing Chen
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou
- P. R. China
| | - Lingling Zhang
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou
- P. R. China
| | - Liyao Zheng
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou
- P. R. China
| | - Xingchuan Wei
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou
- P. R. China
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31
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Gao Y, Zhang P, Li G, Zhao Y. Cascade Annulation of 2-Alkynylthioanisoles with Unsaturated α-Bromocarbonyls Leading to Thio-Benzobicyclic Skeletons. J Org Chem 2018; 83:13726-13733. [PMID: 30346173 DOI: 10.1021/acs.joc.8b02001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A protocol of Cu-catalyzed annulation of phenylethynylsulfanes with unsaturated α-bromocarbonyls for the construction of thio-benzobicyclic skeletons is described. In this single reaction, three new bonds and two new rings can be established, highlighting the step-economics and high efficiency of this protocol.
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Affiliation(s)
- Yuzhen Gao
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou , Fujian 350002 , China
| | - Pengbo Zhang
- School of Public Health , Xinxiang Medical University , Xinxiang 453003 , China
| | - Gang Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou , Fujian 350002 , China
| | - Yufen Zhao
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen , Fujian 361005 , China
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32
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Shen ZJ, Shi HN, Hao WJ, Tu SJ, Jiang B. Visible-light photocatalytic bicyclization of β-alkynyl propenones for accessing diastereoenriched syn-fluoren-9-ones. Chem Commun (Camb) 2018; 54:11542-11545. [PMID: 30175828 DOI: 10.1039/c8cc06086j] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A novel visible-light photocatalytic bicyclization of β-alkynyl propenones with α-bromocarbonyls for highly diastereoselective synthesis of richly decorated syn-fluoren-9-ones is described. The reaction proceeds via a radical-triggered 5-exo-dig cyclization/1,6-H-abstraction/6-endo-trig cyclization cascade and offers a new and practical method for the assembly of 6/5/6 carbocyclic skeletons via C(sp3)-H alkenylation.
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Affiliation(s)
- Zheng-Jia Shen
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
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33
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Hu H, Chen X, Sun K, Wang J, Liu Y, Liu H, Fan L, Yu B, Sun Y, Qu L, Zhao Y. Silver-Catalyzed Radical Cascade Cyclization toward 1,5-/1,3-Dicarbonyl Heterocycles: An Atom-/Step-Economical Strategy Leading to Chromenopyridines and Isoxazole-/Pyrazole-Containing Chroman-4-Ones. Org Lett 2018; 20:6157-6160. [PMID: 30251870 DOI: 10.1021/acs.orglett.8b02627] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A novel and convenient silver-catalyzed radical cascade cyclization toward a large variety of 1,5-/1,3-dicarbonyl heterocycles containing a chroman-4-one, indanone, or 2,3-dihydroquinolin-4(1 H)-one moiety was developed, by reacting various 2-functionalized benzaldehydes, including 2-allyloxy benzaldehydes, 2-allyl benzaldehyde, and 2-N(Ts)CH2-CH═CH2 substituted benzaldehyde, with 1,3-dicarbonyl compounds in the presence of AgNO3/K2S2O8 in one pot under mild reaction conditions. The newly obtained 1,5-/1,3-dicarbonyl-containing heterocycles were further used directly to synthesize more structurally diverse polyheterocycles, mainly including chromenopyridines as well as isoxazole- or pyrazole-containing chroman-4-ones.
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Affiliation(s)
- Hao Hu
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications. College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Xiaolan Chen
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications. College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China.,The Key Laboratory for Chemical Biology of Fujian Province , Xiamen University , Xiamen 361005 , China
| | - Kai Sun
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications. College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Junchao Wang
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications. College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Yan Liu
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications. College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Hui Liu
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications. College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Lulu Fan
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications. College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Bing Yu
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications. College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Yuanqiang Sun
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications. College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Lingbo Qu
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications. College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Yufen Zhao
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications. College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China.,The Key Laboratory for Chemical Biology of Fujian Province , Xiamen University , Xiamen 361005 , China
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34
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Huang MH, Hao WJ, Jiang B. Recent Advances in Radical-Enabled Bicyclization and Annulation/1,n
-Bifunctionalization Reactions. Chem Asian J 2018; 13:2958-2977. [DOI: 10.1002/asia.201801119] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Min-Hua Huang
- School of Chemistry & Materials Science; Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou 221116 P. R. China
- Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing 210009, Jiangsu P. R. China
| | - Wen-Juan Hao
- School of Chemistry & Materials Science; Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou 221116 P. R. China
| | - Bo Jiang
- School of Chemistry & Materials Science; Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou 221116 P. R. China
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35
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Li Y, Li JH. Decarbonylative Formation of Homoallyl Radical Capable of Annulation with N-Arylpropiolamides via Aldehyde Auto-oxidation. Org Lett 2018; 20:5323-5326. [PMID: 30146885 DOI: 10.1021/acs.orglett.8b02243] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new metal-free aldehyde auto-oxidation strategy that allows the decarbonylative formation of homoallyl radical capable of cascade annulations with alkynes is described. By using various N-arylpropiolamides, the oxidative radical [3 + 2]/[5 + 2] cascade annulation reaction was achieved to produce benzo[ b]cyclopenta[ e]azepin-4(1 H)-ones, which represent a powerful new platform for the intermolecular cycloadditions of alkyne with broad substrate scope and high selectivity.
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Affiliation(s)
- Yang Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China.,State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou 730000 , China
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36
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Xu ZQ, Wang C, Li L, Duan L, Li YM. Construction of 3,4-Dihydroisoquinolinones and Indanones via DTBP-Promoted Oxidative Coupling of N-Allylbenzamides with Aromatic Aldehydes. J Org Chem 2018; 83:9718-9728. [DOI: 10.1021/acs.joc.8b01242] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Zhong-Qi Xu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, People’s Republic of China
| | - Chao Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, People’s Republic of China
| | - Lin Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, People’s Republic of China
| | - Lili Duan
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, People’s Republic of China
| | - Yue-Ming Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, People’s Republic of China
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37
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Mechanism for Co(dppp)-catalyzed regioselective intermolecular hydroacylation of 1,3-dienes and benzaldehydes: Insights from density functional calculations. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.04.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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38
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Ouyang XH, Song RJ, Li JH. Developments in the Chemistry of α-Carbonyl Alkyl Bromides. Chem Asian J 2018; 13:2316-2332. [DOI: 10.1002/asia.201800630] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 07/01/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Xuan-Hui Ouyang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
| | - Ren-Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
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39
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Tappin NDC, Gnägi-Lux M, Renaud P. Radical-Triggered Three-Component Coupling Reaction of Alkenylboronates, α-Halocarbonyl Compounds, and Organolithium Reagents: The Inverse Ylid Mechanism. Chemistry 2018; 24:11498-11502. [PMID: 29877598 DOI: 10.1002/chem.201802384] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 06/06/2018] [Indexed: 11/05/2022]
Abstract
An operationally simple protocol to affect a radical addition to alkenylboronates that spontaneously undergo a [1,2]-metalate shift is described. Overall, the reaction is a three-component coupling of an organolithium, alkenylboronic ester, and halide which takes place with broad scope and good to excellent yields. Experimental mechanistic investigations support the formation of a boron inverse ylid intermediate.
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Affiliation(s)
- Nicholas D C Tappin
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland
| | - Manuel Gnägi-Lux
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland
| | - Philippe Renaud
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland
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40
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Zheng HX, Shan XH, Qu JP, Kang YB. Strategy for Overcoming Full Reversibility of Intermolecular Radical Addition to Aldehydes: Tandem C-H and C-O Bonds Cleaving Cyclization of (Phenoxymethyl)arenes with Carbonyls to Benzofurans. Org Lett 2018; 20:3310-3313. [PMID: 29775071 DOI: 10.1021/acs.orglett.8b01207] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An intermolecular addition of carbon radicals enabled by a cascade radical coupling strategy is developed. It includes an intermolecular alkyl radical addition to a carbonyl group followed by an intramolecular alkoxy radical addition to haloarenes and produces substituted benzofurans in high yields. The radical nature of this reaction is explored by radical trapping experiments and EPR analysis. The mechanism is investigated by KIE experiments and control experiments. This method could provide rapid and practical access to the key intermediate of TAM-16, a safe and potent antibacterial agent for treating tuberculosis, and, therefore, is of great importance for organic synthesis and the pharmaceutical industry.
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Affiliation(s)
- Hong-Xing Zheng
- Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , 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, Jiangsu National Synergetic Innovation Center for Advanced Materials , 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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41
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Zhang Y, Zhang J, Hu B, Ji M, Ye S, Zhu G. Synthesis of Difluoromethylated and Phosphorated Spiro[5.5]trienones via Dearomative Spirocyclization of Biaryl Ynones. Org Lett 2018; 20:2988-2992. [PMID: 29737173 DOI: 10.1021/acs.orglett.8b01027] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Copper- or silver-catalyzed cascade radical addition/dearomative spirocyclization of biaryl ynones with fluoroalkyl bromides or diethylphosphite has been realized for the first time. This method provides a novel and step-economical protocol for the divergent synthesis of a wide range of difluoromethylated or monofluoromethylated and phosphorated spiro[5.5]trienones in moderate to high yields.
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Affiliation(s)
- Yan Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China
| | - Junhua Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China
| | - Boyue Hu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China
| | - Mingming Ji
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China
| | - Shangyi Ye
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China
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42
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Che C, Qian Z, Wu M, Zhao Y, Zhu G. Intermolecular Oxidative Radical Addition to Aromatic Aldehydes: Direct Access to 1,4- and 1,5-Diketones via Silver-Catalyzed Ring-Opening Acylation of Cyclopropanols and Cyclobutanols. J Org Chem 2018; 83:5665-5673. [DOI: 10.1021/acs.joc.8b00666] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chao Che
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Zhaosheng Qian
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Mingchang Wu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Ying Zhao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
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43
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Liu B, Yu JX, Li Y, Li JH, He DL. Copper-Catalyzed Annulation Cascades of Alkyne-Tethered α-Bromocarbonyls with Alkynes: An Access to Heteropolycycles. Org Lett 2018; 20:2129-2132. [DOI: 10.1021/acs.orglett.8b00236] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bang Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Jiang-Xi Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Yang Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Jin-Heng Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - De-Liang He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
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44
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Wang CY, Pan GH, Chen F, Li JH. Oxidative cyclization of 2-allenyl-1,1'-biphenyls with α-carbonyl alkyl bromides: facile access to functionalized phenanthrenes. Chem Commun (Camb) 2018; 53:4730-4733. [PMID: 28405640 DOI: 10.1039/c7cc00483d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A new copper-facilitated oxidative cyclization of 2-allenyl-1,1'-biphenyls with α-carbonyl alkyl bromides for producing functionalized phenanthrenes is presented, which represents the first allene 2,3-dicarbofunctionalization triggered by oxidative radical-medicated C3-addition of the terminal allene moiety and C-Br/C-H functionalization.
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Affiliation(s)
- Cheng-Yong Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China.
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45
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Jin W, Zhou Y, Zhao Y, Ma Q, Kong L, Zhu G. Nickel-Catalyzed Remote Arylation of Alkenyl Aldehydes Initiated by Radical Alkylation with Tertiary α-Carbonyl Alkyl Bromides. Org Lett 2018; 20:1435-1438. [DOI: 10.1021/acs.orglett.8b00221] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Weiwei Jin
- Key Laboratory of the Ministry of Education
for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Yulu Zhou
- Key Laboratory of the Ministry of Education
for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Ying Zhao
- Key Laboratory of the Ministry of Education
for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Qianqian Ma
- Key Laboratory of the Ministry of Education
for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education
for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education
for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
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46
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Chen Y, Shu C, Luo F, Xiao X, Zhu G. Photocatalytic acylarylation of unactivated alkenes with diaryliodonium salts toward indanones and related compounds. Chem Commun (Camb) 2018; 54:5373-5376. [DOI: 10.1039/c8cc02636j] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A photocatalytic acylarylation of unactivated alkenes using diaryliodonium salts is described, giving 2-benzyl indanones and related compounds in promising yields with excellent diastereoselectivity.
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Affiliation(s)
- Yongtao Chen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Chenyun Shu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Fang Luo
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Xiaohui Xiao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
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47
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Hu H, Chen X, Sun K, Wang J, Liu Y, Liu H, Yu B, Sun Y, Qu L, Zhao Y. Silver-catalyzed decarboxylative cascade radical cyclization of tert-carboxylic acids and o-(allyloxy)arylaldehydes towards chroman-4-one derivatives. Org Chem Front 2018. [DOI: 10.1039/c8qo00882e] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A convenient silver-catalyzed decarboxylative cascade radical cyclization of tertiary carboxylic acids and o-(allyloxy)arylaldehydes was developed to synthesize 3-alkyl-substituted chroman-4-one derivatives.
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Affiliation(s)
- Hao Hu
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications. College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Xiaolan Chen
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications. College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- The Key Laboratory for Chemical Biology of Fujian Province
| | - Kai Sun
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications. College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Junchao Wang
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications. College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yan Liu
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications. College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- College of Biological and Pharmaceutical Engineering
| | - Hui Liu
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications. College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Bing Yu
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications. College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yuanqiang Sun
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications. College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Lingbo Qu
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications. College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yufen Zhao
- Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications. College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- The Key Laboratory for Chemical Biology of Fujian Province
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48
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Zhang J, Jin W, Cheng C, Luo F. Copper-catalyzed remote oxidation of alcohols initiated by radical difluoroalkylation of alkenes: facile access to difluoroalkylated carbonyl compounds. Org Biomol Chem 2018; 16:3876-3880. [DOI: 10.1039/c8ob00889b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A Cu-catalyzed oxidation of alcohols triggered by the radical difluoroalkylation of alkenes has been developed.
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Affiliation(s)
- Jian Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Weiwei Jin
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Cungui Cheng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Fang Luo
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- China
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49
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Pitzer L, Sandfort F, Strieth-Kalthoff F, Glorius F. Intermolecular Radical Addition to Carbonyls Enabled by Visible Light Photoredox Initiated Hole Catalysis. J Am Chem Soc 2017; 139:13652-13655. [DOI: 10.1021/jacs.7b08086] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Lena Pitzer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Frederik Sandfort
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Felix Strieth-Kalthoff
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
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50
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Zheng L, Liang YM. Copper-Catalyzed [2 + 2 + 3] Annulation of 1,6-Enynes with α-Bromo-1,3-Dicarbonyl Compounds: Synthesis of Dihydrooxepines. J Org Chem 2017; 82:7000-7007. [DOI: 10.1021/acs.joc.7b00879] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Lan Zheng
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China
| | - Yong-Min Liang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China
- State
Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical
Physics, Chinese Academy of Sciences, Lanzhou, 730000, P.R. China
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