1
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Chen XW, Hou ZC, Chen C, Zhang LH, Chen ME, Zhang FM. Enantioselective total syntheses of six natural and two proposed meroterpenoids from Psoralea corylifolia. Chem Sci 2023; 14:5699-5704. [PMID: 37265714 PMCID: PMC10231314 DOI: 10.1039/d3sc00582h] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 05/01/2023] [Indexed: 06/03/2023] Open
Abstract
The first enantioselective total syntheses of six natural and two proposed meroterpenoids isolated from Psoralea corylifolia have been achieved in 7-9 steps from 2-methylcyclohexanone. The current synthetic approaches feature a high level of synthetic flexibility, stereodivergent fashion and short synthetic route, thereby providing a potential platform for the preparation of numerous this-type meroterpenoids and their pseudo-natural products.
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Affiliation(s)
- Xiao-Wei Chen
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 China
| | - Zi-Chao Hou
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 China
| | - Chi Chen
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 China
| | - Ling-Hui Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 China
| | - Meng-En Chen
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 China
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200062 China
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2
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Chen Q, Sun H, Li L, Tian J, Xu Q, Ma N, Li L, Zhang L, Li C. The Ir-Catalyzed Asymmetric Hydrogenation of α-Halogenated Ketones Utilizing Cinchona-Alkaloid-Derived NNP Ligand to Produce ( R)- and ( S)-Halohydrins. J Org Chem 2022; 87:15986-15997. [PMID: 36397210 DOI: 10.1021/acs.joc.2c02109] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The asymmetric hydrogenation of α-halogenated ketones with iridium catalyst was developed, utilizing easily accessed cinchona-alkaloid-based NNP ligands. Various α-chloroacetophenones, heterocyclic thienyl and furanyl substrates, and even bromoketones were completely converted to the desired chiral halohydrins by this protocol. Both (R)- and (S)-chiral halohydrins can be prepared by changing the configurations of the chiral ligand NNP with up to 99.6% ee (enantiomeric excess) and 98.8% ee, respectively. Also, a gram-scale experiment was carried out efficiently.
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Affiliation(s)
- Qian Chen
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, People's Republic of China
| | - Hao Sun
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, People's Republic of China
| | - Linlin Li
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, People's Republic of China
| | - Jie Tian
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, People's Republic of China
| | - Qian Xu
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, People's Republic of China
| | - Nana Ma
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, People's Republic of China
| | - Li Li
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, People's Republic of China
| | - Lin Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, People's Republic of China
| | - Chun Li
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, People's Republic of China
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3
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Chen Y, Hee S, Liu X, Das S, Hong D, Leung PH, Li Y, Li J, Liu J. ICl-Mediated Functional Group Interconversion from Methyl Homopropargyl Ether to α-Iodo-γ-chloroketone. J Org Chem 2022; 87:15129-15138. [PMID: 36331559 PMCID: PMC10174042 DOI: 10.1021/acs.joc.2c01638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
An ICl-mediated highly chemo- and regioselective functional group interconversion from methyl homopropargyl ether to α-iodo-γ-chloro-ketone is reported. Density functional theory (DFT)-calculated reaction coordinate and potential energy surface support the high chemo-selectivity observed for the formation of α-iodo-γ-chloroketone over furan. The five-membered oxonium ring formation-ring opening mechanism is a potential template for the preparation of polyfunctionalized carbonyl compounds.
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Affiliation(s)
- Yu Chen
- Department of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, New York11367, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Ave., New York, New York10016, United States
| | - Samual Hee
- Department of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, New York11367, United States
| | - Xiaochen Liu
- Department of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, New York11367, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Ave., New York, New York10016, United States
| | - Sajal Das
- Department of Chemistry, University of North Bengal, Darjeeling734 013, India
| | - Dongsub Hong
- Department of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, New York11367, United States
| | - Pak-Hing Leung
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Yongxin Li
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Jiaming Li
- Department of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, New York11367, United States
| | - Jianbo Liu
- Department of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, New York11367, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Ave., New York, New York10016, United States
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4
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Synthetic Access to Aromatic α-Haloketones. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27113583. [PMID: 35684526 PMCID: PMC9182500 DOI: 10.3390/molecules27113583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 11/24/2022]
Abstract
α-Haloketones play an essential role in the synthesis of complex N-, S-, O-heterocycles; of which some exhibit a remarkable biological activity. Research further illustrated that α-bromo-, α-chloro-, and α-iodoketones are key precursors for blockbuster pharmacological compounds. Over the past twenty years, substantial advances have been made in the synthesis of these industrially relevant building blocks. Efforts have focused on rendering the synthetic protocols greener, more effective and versatile. In this survey, we summarised and thoroughly evaluated the progress of the field, established in the past two decades, in terms of generality, efficacy and sustainability.
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5
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Ou W, Wang R, Liu R, Huang H. An Improved and Suitable Method for Large Scale Production of
α-Monochlorocyclodecanone. LETT ORG CHEM 2022. [DOI: 10.2174/1570178618666210217121023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
:
α-Monochlorocyclododecanone was synthesized from cyclododecane and 1,3-Dichloro-5,5-dimethylhydantoin (DCDMH) catalyzed with silica gel in MeOH. The product was obtained by crystallization with nearly 85% yield. The presented method used cheap raw materials, mild reaction conditions, simple separation method and environment-friendly process. Additionally, the current synthesis provided an ideal approach for large-scale production.
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Affiliation(s)
- Wenhua Ou
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, 200235, China
| | - Ruolin Wang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, 200235, China
| | - Ruonan Liu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, 200235, China
| | - Hong Huang
- College of
Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
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6
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Tu D, Luo J, Jiang W, Tang Q. Solvent-free preparation of α,α-dichloroketones with sulfuryl chloride. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153335] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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7
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Stockhammer L, Schörgenhumer J, Mairhofer C, Waser M. Asymmetric α-Chlorination of β-Keto Esters Using Hypervalent Iodine-Based Cl-Transfer Reagents in Combination with Cinchona Alkaloid Catalysts. European J Org Chem 2021; 2021:82-86. [PMID: 33519300 PMCID: PMC7821243 DOI: 10.1002/ejoc.202001217] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Indexed: 01/29/2023]
Abstract
We herein report an unprecedented strategy for the asymmetric α-chlorination of β-keto esters with hypervalent iodine-based Cl-transfer reagents using simple Cinchona alkaloid catalysts. Our investigations support an α-chlorination mechanism where the Cinchona species serves as a nucleophilic catalyst by reacting with the chlorinating agent to generate a chiral electrophilic Cl-transfer reagent in situ. Using at least 20 mol-% of the alkaloid catalyst allows for good yields and enantioselectivities for a variety of different β-keto esters under operationally simple conditions.
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Affiliation(s)
- Lotte Stockhammer
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstr. 694040LinzAustria
| | - Johannes Schörgenhumer
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstr. 694040LinzAustria
| | - Christopher Mairhofer
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstr. 694040LinzAustria
| | - Mario Waser
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstr. 694040LinzAustria
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8
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Bian HL, Tang SZ, Chen ME, Zhang XM, Lv JW, Chen XW, Qi FM, Chen SW, Zhang FM. Transition-Metal-Free Site-Selective γ-C(sp 2)-H Monoiodination of Arenes Directed by an Aliphatic Keto Group. Org Lett 2020; 22:5314-5319. [PMID: 32589432 DOI: 10.1021/acs.orglett.0c01466] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A general γ-C(sp2)-H iodination method directed by an aliphatic keto group has been developed under transition-metal-free conditions for the first time, generating iodoarenes in good to excellent yields with excellent site selectivity. This protocol features a wide range of aryl-substituted ketones, short reaction times, mild reaction conditions, and scalable synthetic procedures. A possible reaction mechanism was also proposed based on several control experiments.
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Affiliation(s)
- Hong-Li Bian
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.,School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Shi-Zhong Tang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Meng-En Chen
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Jian-Wei Lv
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xiao-Wei Chen
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Feng-Ming Qi
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Shi-Wu Chen
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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9
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Huo S, Wang Q, Zuo W. An iron variant of the Noyori hydrogenation catalyst for the asymmetric transfer hydrogenation of ketones. Dalton Trans 2020; 49:7959-7967. [PMID: 32497166 DOI: 10.1039/d0dt01204a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We report the design of a new iron catalyst for the asymmetric transfer hydrogenation of ketones. This type of iron catalyst combines the structural characteristics of the Noyori hydrogenation catalyst (an axially chiral 2,2'-bis(phosphino)-1,1'-binaphthyl fragment and the metal-ligand bifunctional motif) and an ene(amido) group that can activate the iron center. After activation by 8 equivalents of potassium tert-butoxide, (SA,RP,SS)-7a and (SA,RP,SS)-7b are active but nonenantioselective catalysts for the transfer hydrogenation of acetophenone and α,β-unsaturated aldehydes at room temperature in isopropanol. A maximum turnover number of 14480 was observed for (SA,RP,SS)-7a in the reduction of acetophenone. The right combination of the stereochemistry of the axially chiral 2,2'-bis(phosphino)-1,1'-binaphthyl group and the carbon-centered chiral amine-imine moiety in (SA,RP,RR)-7b' afforded an enantioselective catalyst for the preparation of chiral alcohols with moderate to good yields and a broad functional group tolerance.
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Affiliation(s)
- Shangfei Huo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of materials science and engineering, Donghua University, China.
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10
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Beng TK, Omar Farah A. Modular access to formamide-tethered α-halo ynones via the deconstructive oxo-halogenation of readily available α-alkynyl eneformamides. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Guan D, Luan H, Patiguli M, Jiao Q, Yun Q, Chen Q, Xu C, Nie X, Hu F, Huang G. Metal–free Efficient Method for the Synthesis of N‐(2‐haloethyl)benzamides through the Ring‐opening of2‐oxazolines. ChemistrySelect 2019. [DOI: 10.1002/slct.201901109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Dan Guan
- Xinjiang Laboratory of Petroleum Reserve in Conglomerate, Kalamay 834000 China
- Research institute of Enhance Oil RecoveryExp& Testing Res of Xinjiang Oilfield Co Petrochina Co.,Ltd,Kelamayi 834000 Xinjiang China
| | - Huo‐Xin Luan
- Xinjiang Laboratory of Petroleum Reserve in Conglomerate, Kalamay 834000 China
- Research institute of Enhance Oil RecoveryExp& Testing Res of Xinjiang Oilfield Co Petrochina Co.,Ltd,Kelamayi 834000 Xinjiang China
| | - Maimaiti Patiguli
- Xinjiang Laboratory of Petroleum Reserve in Conglomerate, Kalamay 834000 China
- Research institute of Enhance Oil RecoveryExp& Testing Res of Xinjiang Oilfield Co Petrochina Co.,Ltd,Kelamayi 834000 Xinjiang China
| | - Qiu‐Ju Jiao
- Xinjiang Laboratory of Petroleum Reserve in Conglomerate, Kalamay 834000 China
- Research institute of Enhance Oil RecoveryExp& Testing Res of Xinjiang Oilfield Co Petrochina Co.,Ltd,Kelamayi 834000 Xinjiang China
| | - Qing‐Qing Yun
- Xinjiang Laboratory of Petroleum Reserve in Conglomerate, Kalamay 834000 China
- Research institute of Enhance Oil RecoveryExp& Testing Res of Xinjiang Oilfield Co Petrochina Co.,Ltd,Kelamayi 834000 Xinjiang China
| | - Quan‐Sheng Chen
- Xinjiang Laboratory of Petroleum Reserve in Conglomerate, Kalamay 834000 China
- Research institute of Enhance Oil RecoveryExp& Testing Res of Xinjiang Oilfield Co Petrochina Co.,Ltd,Kelamayi 834000 Xinjiang China
| | - Chong‐Jun Xu
- Xinjiang Laboratory of Petroleum Reserve in Conglomerate, Kalamay 834000 China
- Research institute of Enhance Oil RecoveryExp& Testing Res of Xinjiang Oilfield Co Petrochina Co.,Ltd,Kelamayi 834000 Xinjiang China
| | - Xiao‐Bin Nie
- Xinjiang Laboratory of Petroleum Reserve in Conglomerate, Kalamay 834000 China
- Research institute of Enhance Oil RecoveryExp& Testing Res of Xinjiang Oilfield Co Petrochina Co.,Ltd,Kelamayi 834000 Xinjiang China
| | - Fang‐Peng Hu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceDepartment of Chemistry, Lanzhou University Lanzhou 730000 China
| | - Guo‐Sheng Huang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceDepartment of Chemistry, Lanzhou University Lanzhou 730000 China
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12
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Liu Y, Wang QL, Chen Z, Zhou Q, Li H, Xu WY, Xiong BQ, Tang KW. Oxone-Mediated Radical C–C Bond Acetmethylation/Arylation of Methylenecyclopropanes and Vinylcyclopropanes with α-Alkyl Ketones: Facile Access to Oxoalkyl-Substituted 3,4-Dihydronaphthalenes. J Org Chem 2019; 84:5413-5424. [DOI: 10.1021/acs.joc.9b00407] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yu Liu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Qiao-Lin Wang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Zan Chen
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Quan Zhou
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Hua Li
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Wen-Yuan Xu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
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13
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Zhou Y, Chen X, Yin D, Ling Y, Wang S, Zhang X, Rao W. Gold-Catalyzed Cycloisomerization-Halogenation Sequence of 1,3-Enyne Esters with NXS: Efficient Synthesis of 5-Bromo/Iodo Cyclopentenones. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801530] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Yuanyuan Zhou
- Jiangsu Key Lab of Biomass-based Green Fuels and Chemicals; College of Chemical Engineering; Nanjing Forestry University; 210037 Nanjing P. R. China
| | - Xianxiao Chen
- Jiangsu Key Lab of Biomass-based Green Fuels and Chemicals; College of Chemical Engineering; Nanjing Forestry University; 210037 Nanjing P. R. China
| | - Dongliang Yin
- Jiangsu Key Lab of Biomass-based Green Fuels and Chemicals; College of Chemical Engineering; Nanjing Forestry University; 210037 Nanjing P. R. China
| | - Yuan Ling
- Jiangsu Key Lab of Biomass-based Green Fuels and Chemicals; College of Chemical Engineering; Nanjing Forestry University; 210037 Nanjing P. R. China
| | - Shifa Wang
- Jiangsu Key Lab of Biomass-based Green Fuels and Chemicals; College of Chemical Engineering; Nanjing Forestry University; 210037 Nanjing P. R. China
| | - Xiaoxiang Zhang
- Jiangsu Key Lab of Biomass-based Green Fuels and Chemicals; College of Chemical Engineering; Nanjing Forestry University; 210037 Nanjing P. R. China
| | - Weidong Rao
- Jiangsu Key Lab of Biomass-based Green Fuels and Chemicals; College of Chemical Engineering; Nanjing Forestry University; 210037 Nanjing P. R. China
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14
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Chapuis C, Richard CA. A One Pot Synthesis of Dehydrohedione (DHH) from a Hedione
®
Precursor. Helv Chim Acta 2018. [DOI: 10.1002/hlca.201800063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Christian Chapuis
- Corporate R&D Division, New Ingredients; Firmenich SA; P.O.Box 239 CH-1211 Geneva 8 Switzerland
| | - Claude-Alain Richard
- Corporate R&D Division, New Ingredients; Firmenich SA; P.O.Box 239 CH-1211 Geneva 8 Switzerland
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15
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Felipe‐Blanco D, Gonzalez‐Gomez JC. Salicylic Acid‐Catalyzed Arylation of Enol Acetates with Anilines. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800427] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Diego Felipe‐Blanco
- Instituto de Síntesis Orgánica (ISO) and Departamento de Química Orgánica, Facultad de CienciasUniversidad de Alicante Apdo. 99 03080 Alicante Spain
| | - Jose C. Gonzalez‐Gomez
- Instituto de Síntesis Orgánica (ISO) and Departamento de Química Orgánica, Facultad de CienciasUniversidad de Alicante Apdo. 99 03080 Alicante Spain
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16
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Facile and efficient preparation of α-halomethyl ketones from α-diazo ketones catalyzed by iron(III) halides and silica gel. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.02.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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