1
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Synthesis of Ester-Containing Chroman-4-Ones via Cascade Radical Annulation of 2-(Allyloxy)Arylaldehydes with Oxalates under Metal Free Conditions. Int J Mol Sci 2023; 24:ijms24055028. [PMID: 36902464 PMCID: PMC10003100 DOI: 10.3390/ijms24055028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/23/2023] [Accepted: 03/01/2023] [Indexed: 03/08/2023] Open
Abstract
A convenient and practical method for the synthesis of bioactive ester-containing chroman-4-ones through the cascade radical cyclization of 2-(allyloxy)arylaldehydes and oxalates is described. The preliminary studies suggest that an alkoxycarbonyl radical might be involved in the current transformation, which was generated via the decarboxylation of oxalates in the presence of (NH4)2S2O8.
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2
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Tang L, Lv G, Cheng R, Yang F, Zhou Q. Three-Component Perfluoroalkylvinylation of Alkenes Enabled by Dual DBU/Fe Catalysis. Chemistry 2023; 29:e202203332. [PMID: 36351885 DOI: 10.1002/chem.202203332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/06/2022] [Accepted: 11/09/2022] [Indexed: 11/11/2022]
Abstract
Herein, a simple and efficient strategy that involves dual 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU)/iron-catalyzed alkene perfluoroalkylvinylation by using perfluoroalkyl iodides and 2-aminonaphthalene-1,4-diones as coupling partners is demonstrated. In terms of the developed catalytic system, various styrenes and aliphatic alkenes are well-tolerated, leading to the accurate preparation of perfluoroalkyl-containing 2-aminonaphthalene-1,4-diones in excellent regioselectivity. Moreover, the protocol can be readily applied in late-stage modifications of natural products and pharmaceuticals. The title reactions are featured by easily accessible and inexpensive catalysts and substrates, broad substrate applicability, and mild reaction conditions. Mechanistic investigations reveal a tandem C-I cleavable alkylation and C-C vinylation enabled by cooperative DBU/iron catalysis.
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Affiliation(s)
- Lin Tang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P.R. China.,Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan, Xinyang, 464000, P.R. China
| | - Ge Lv
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P.R. China
| | - Ruimin Cheng
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P.R. China
| | - Fang Yang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P.R. China
| | - Qiuju Zhou
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P.R. China
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3
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Zhang H, Yang N, Li J, Wang P, Li S, Xie L, Liao S. Radical Fluorosulfonyl Arylation of Alkenes: Accessing FSO 2-Functionalized Chromanes via Formal Endo and Exo Cyclization. Org Lett 2022; 24:8170-8175. [DOI: 10.1021/acs.orglett.2c03224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Honghai Zhang
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Na Yang
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Jing Li
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Peng Wang
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Shaojie Li
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Lili Xie
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Saihu Liao
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
- Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing 100190, P. R. China
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4
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Tang L, Lv G, Fu Y, Chang XP, Cheng R, Wang L, Zhou Q. Bifunctional 1,8-Diazabicyclo[5.4.0]undec-7-ene for Visible Light-Induced Heck-Type Perfluoroalkylation of Alkenes. J Org Chem 2022; 87:14763-14777. [DOI: 10.1021/acs.joc.2c02093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lin Tang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
- China Province Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan, Xinyang, Henan 464000, China
| | - Ge Lv
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Ya Fu
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Xue-Ping Chang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Ruimin Cheng
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Lingling Wang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Qiuju Zhou
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
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5
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Xie LY, Peng S, Yang LH, Liu XW. Metal-Free Synthesis of Carbamoylated Chroman-4-Ones via Cascade Radical Annulation of 2-(Allyloxy)arylaldehydes with Oxamic Acids. Molecules 2022; 27:molecules27207049. [PMID: 36296640 PMCID: PMC9609457 DOI: 10.3390/molecules27207049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/12/2022] [Accepted: 10/12/2022] [Indexed: 11/17/2022] Open
Abstract
An efficient and straightforward approach for the synthesis of carbamoylated chroman-4-ones has been well-developed. The reaction is triggered through the generation of carbamoyl radicals from oxamic acids under metal-free conditions, which subsequently undergoes decarboxylative radical cascade cyclization on 2-(allyloxy)arylaldehydes to afford various amide-containing chroman-4-one scaffolds with high functional group tolerance and a broad substrate scope.
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6
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Escorihuela J, Wolf LM. Computational Study on the Co-Mediated Intramolecular Pauson–Khand Reaction of Fluorinated and Chiral N-Tethered 1,7-Enynes. Organometallics 2022; 41:2525-2534. [PMID: 36185394 PMCID: PMC9516775 DOI: 10.1021/acs.organomet.2c00227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Indexed: 11/28/2022]
Abstract
![]()
The Co2(CO)8-mediated intramolecular
Pauson–Khand
reaction is an elegant approach to obtain cyclopentenone derivatives
containing asymmetric centers. In this work, we employed density functional
theory calculations at the M11/6-311+G(d,p) level of theory to investigate
the mechanism and reactivity for the Pauson–Khand reaction
of fluorinated and asymmetric N-tethered 1,7-enynes.
The rate-determining step was found to be the intramolecular alkene
insertion into the carbon–cobalt bond. The stereoselectivity
of the alkene insertion step was rationalized by the different transition
states showing the coordination of the alkene through the Re- and Si-face. The effects of different
fluorine groups and steric effects on both the alkenyl and alkynyl
moieties were also theoretically investigated.
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Affiliation(s)
- Jorge Escorihuela
- Departamento de Química Orgánica, Facultad de Farmacia, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100Burjassot, València, Spain
| | - Lawrence M. Wolf
- Department of Chemistry, University of Massachusetts−Lowell, 1 University Avenue, Lowell, Massachusetts01854, United States
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7
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Mao LL, Zhou AX, Zhu XH, Peng H, Quan LX, Wan JP, Yang SD. Visible-Light-Mediated Tandem Difluoromethylation/Cyclization of Alkenyl Aldehydes toward CF 2H-Substituted Chroman-4-one Derivatives. J Org Chem 2022; 87:12414-12423. [PMID: 36007244 DOI: 10.1021/acs.joc.2c01689] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient and facile visible-light-mediated tandem difluoromethylation/cyclization of alkenyl aldehydes, with easily accessible and air-stable [Ph3PCF2H]+Br- as the difluoromethylation reagent, has been established. A range of CF2H-substituted chroman-4-one skeletons and their derivatives, such as 2,3-dihydroquinolin-4(1H)-ones, chroman, 3,4-dihydronaphthalen-1(2H)-one, 2,3-dihydrobenzofuran, and 2,3-dihydro-1H-inden-1-one, are efficiently produced in moderate to good yields with excellent chemoselectivity under mild reaction conditions.
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Affiliation(s)
- Liu-Liang Mao
- College of Chemistry and Environment Science, Shangrao Normal University, Shangrao 334001, China
| | - An-Xi Zhou
- College of Chemistry and Environment Science, Shangrao Normal University, Shangrao 334001, China
| | - Xian-Hong Zhu
- College of Chemistry and Environment Science, Shangrao Normal University, Shangrao 334001, China
| | - Huanan Peng
- College of Chemistry and Environment Science, Shangrao Normal University, Shangrao 334001, China
| | - Li-Xia Quan
- College of Chemistry and Environment Science, Shangrao Normal University, Shangrao 334001, China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Shang-Dong Yang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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8
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Tang L, Yang F, Zhang S, Lv G, Zhou Q, Zheng L. Fe-Catalyzed Radical Trifluoromethyl-Alkenylation of Alkenes or Alkynes with 2-Amino-1,4-naphthoquinones. J Org Chem 2022; 87:7274-7290. [PMID: 35594549 DOI: 10.1021/acs.joc.2c00477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first Fe-catalyzed three-component radical trifluoromethyl-alkenylation of alkenes with 2-amino-1,4-naphthoquinones and CF3SO2Na is reported. The developed reaction enables the highly regioselective preparation of a variety of valuable CF3-substituted 1,4-naphthoquinones in acceptable yields. In the light of the catalytic system, alkynes smoothly afford the corresponding three- or four-component trifluoromethyl-alkenylation products. This protocol features use of easily available and inexpensive reagents, broad substrate scope, and simple reaction conditions.
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Affiliation(s)
- Lin Tang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Fang Yang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Shuai Zhang
- Nanjing Harris Bio-Pharmaceutical Technology Co. LTD, Nanjing, Jiangsu 211100, China
| | - Ge Lv
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Qiuju Zhou
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Lingyun Zheng
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
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9
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Remete AM, Nonn M, Novák TT, Csányi D, Kiss L. Recent progress in aryltrifluoromethylation reactions of carbon-carbon multiple bonds. Chem Asian J 2022; 17:e202200395. [PMID: 35584374 DOI: 10.1002/asia.202200395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/18/2022] [Indexed: 11/06/2022]
Abstract
Due to the increasing relevance of fluorine-containing organic molecules in drug design, the synthesis of organofluorine compounds has gained high significance in synthetic organic chemistry. Trifluoromethylative difunctionalizations of carbon-carbon multiple bonds, with the simultaneous incorporation of a CF 3 group and another functional element, have considerable potential. Because of the high importance of carbon-carbon bond-forming reactions in organic synthesis, carbotrifluoromethylations and, in particular, aryltrifluoromethylations or heteroaryltrifluoromethylations are considered to be increasing fields of synthetic organic chemistry. The aim of the current review is to summarize recent developments of aryltrifluoromethylation or heteroaryltrifluoromethylation reactions.
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Affiliation(s)
- Attila M Remete
- University of Szeged: Szegedi Tudomanyegyetem, INSTITUTE OF PHARMACEUTICAL CHEMISTRY, HUNGARY
| | - Melinda Nonn
- HAS RCNS: Termeszettudomanyi Kutatokozpont, INSTITUTE OF MATERIALS AND ENVIRONMENTAL CHEMISTRY, HUNGARY
| | - Tamás T Novák
- HAS RCNS: Termeszettudomanyi Kutatokozpont, INSTITUTE OF ORGANIC CHEMISTRY, HUNGARY
| | - Dorottya Csányi
- HAS RCNS: Termeszettudomanyi Kutatokozpont, INSTITUTE OF ORGANIC CHEMISTRY, HUNGARY
| | - Lorand Kiss
- Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont, Institute of Organic Chemistry, Magyar Tudósok krt, 1117, Budapest, HUNGARY
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10
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Ma R, Deng Z, Wang KH, Wang J, Huang D, Su Y, Hu Y, Lv X. Photoinduced Trifluoromethylation with CF 3Br as a Trifluoromethyl Source: Synthesis of α-CF 3-Substituted Ketones. ACS OMEGA 2022; 7:14357-14362. [PMID: 35573213 PMCID: PMC9089747 DOI: 10.1021/acsomega.2c01241] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 03/31/2022] [Indexed: 05/22/2023]
Abstract
An efficient and novel photoinduced trifluoromethylation employing CF3Br as a trifluoromethyl source is described. With commercially accessible fac-Ir(III)(ppy)3 as the catalyst, radical trifluoromethylation between O-silyl enol ether and CF3Br occurs successfully. This method provides various α-CF3-substituted ketones with a broad substrate scope in good yields under mild reaction conditions.
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Affiliation(s)
- Ransong Ma
- College
of Chemistry and Chemical Engineering, Northwest
Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
| | - Zhoubin Deng
- College
of Chemistry and Chemical Engineering, Northwest
Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
| | - Ke-Hu Wang
- College
of Chemistry and Chemical Engineering, Northwest
Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
| | - Junjiao Wang
- College
of Chemistry and Chemical Engineering, Northwest
Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
| | - Danfeng Huang
- College
of Chemistry and Chemical Engineering, Northwest
Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
| | - Yingpeng Su
- College
of Chemistry and Chemical Engineering, Northwest
Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
| | - Yulai Hu
- College
of Chemistry and Chemical Engineering, Northwest
Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiaobo Lv
- Shanghai
Sinofluoro Chemicals Co., Ltd., Shanghai 201321, P. R.
China
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11
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Liu L, Zhang W, Xu C, He J, Xu Z, Yang Z, Ling F, Zhong W. Electrosynthesis of CF
3
‐Substituted Polycyclic Quinazolinones via Cascade Trifluoromethylation/Cyclization of Unactivated Alkene. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101422] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Lei Liu
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Wangqin Zhang
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chao Xu
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Jiaying He
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Zhenhui Xu
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Zehui Yang
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Fei Ling
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Weihui Zhong
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
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12
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Liu YC, Chen P, Li XJ, Xiong BQ, Liu Y, Tang KW, Huang PF. Visible-Light-Induced Dual Acylation of Alkenes for the Construction of 3-Substituted Chroman-4-ones. J Org Chem 2022; 87:4263-4272. [PMID: 35234478 DOI: 10.1021/acs.joc.1c03100] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Heterocyclic compounds, especially oxygen-containing heterocyclic compounds, are crucial moieties in bioactive compounds and drug leads. Substituted chroman-4-ones are a kind of the most significant structural skeletons. Herein, we report a visible-light-induced dual acylation of alkenes for constructing 3-substituted chroman-4-ones, which undergoes a radical tandem cyclization reaction through carbon-carbon bond cleavage of oxime esters by a nitrogen-centered radical strategy. A series of 3-substituted chroman-4-ones were prepared with up to 86% yield.
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Affiliation(s)
- Yi-Chen Liu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Pu Chen
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Xue-Jiao Li
- 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
| | - Yu Liu
- 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
| | - Peng-Fei Huang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
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13
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Lu H, Lu Z, Shang M. Organic Sulfinic Acids and Salts in Visible Light-Induced Reactions. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1671-0085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
AbstractSulfinic acids and their salts are a useful source of sulfur-containing structures. Photocatalysis of these compounds with visible light enables to achieve various transformations under mild conditions. This review summarizes visible-light-induced reactions of sulfinic acids and their salts. It is organized by reaction type and brief discussions on plausible reaction mechanisms for typical transformations are presented.1 Introduction2 Sulfonylation Reactions2.1 Sulfonylation of Alkenes2.2 Sulfonylation of Alkynes2.3 Sulfonylation of Arenes2.4 sp3 C–H Functionalization3 Desulfonylation Reactions4 Sulfenylation Reactions4.1 Sulfenylation of Heteroarenes4.2 Sulfenylation of Carbonyl Chlorides5 Conclusions
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Affiliation(s)
- Hongjian Lu
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University
| | - Zheng Lu
- School of Pharmacy, Jiangsu University
| | - Mingzhou Shang
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University
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14
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Wang A, Feng Y, Jiang TS, Li S, Shi X. Oxidant-Free Selective Synthesis of Functionalized Chroman-4-ones from ortho-Hydroxyacetophenones under HOAc/DMSO Conditions. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0040-1719880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractA metal-free and oxidant-free acid-promoted DMSO activation and subsequent reaction is reported. In this protocol, two molecules of DMSO are activated by HOAc and serve as dual synthons which react with ortho-hydroxyacetophenones, affording 3-(methylthiomethyl)chroman-4-ones in moderate to good yields with high selectivity.
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15
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Ma X, Zhu Y, Yu J, Zhao G, Duanmu J, Yuan Y, Chang XP, Xu D, Zhou Q. Unprecedented observation and characterization of sulfur-centred bifurcated hydrogen bonds. Phys Chem Chem Phys 2021; 23:26519-26523. [PMID: 34807205 DOI: 10.1039/d1cp04601b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Owing to the small electronegativity of the sulfur atom, it is commonly supposed that at most one weak H-bond can be formed between a sulfur atom and an H-bond donor. In this paper, an unprecedented 2 : 1 binding species generated from two molecules of phenol and a molecule of thioether was observed and characterized by various nuclear magnetic resonance (NMR) techniques, Fourier transform-infrared (FT-IR) techniques and density functional theory (DFT) calculations, revealing the formation of sulfur-centred O-H⋯S⋯H-O bifurcated H-bonds. This work may provide a simple and efficient method for the quantitative analysis of weak H-bonds between small organic molecules.
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Affiliation(s)
- Xiantao Ma
- College of Chemistry and Chemical Engineering, Green Catalysis & Synthesis Key Laboratory of Xinyang City, Xinyang Normal University, Xinyang, Henan 464000, China.
| | - Yingying Zhu
- College of Chemistry and Chemical Engineering, Green Catalysis & Synthesis Key Laboratory of Xinyang City, Xinyang Normal University, Xinyang, Henan 464000, China.
| | - Jing Yu
- College of Chemistry and Chemical Engineering, Green Catalysis & Synthesis Key Laboratory of Xinyang City, Xinyang Normal University, Xinyang, Henan 464000, China.
| | - Geng Zhao
- College of Chemistry and Chemical Engineering, Green Catalysis & Synthesis Key Laboratory of Xinyang City, Xinyang Normal University, Xinyang, Henan 464000, China.
| | - Jiaxin Duanmu
- College of Chemistry and Chemical Engineering, Green Catalysis & Synthesis Key Laboratory of Xinyang City, Xinyang Normal University, Xinyang, Henan 464000, China.
| | - Yiyun Yuan
- College of Chemistry and Chemical Engineering, Green Catalysis & Synthesis Key Laboratory of Xinyang City, Xinyang Normal University, Xinyang, Henan 464000, China.
| | - Xue-Ping Chang
- College of Chemistry and Chemical Engineering, Green Catalysis & Synthesis Key Laboratory of Xinyang City, Xinyang Normal University, Xinyang, Henan 464000, China.
| | - Dongli Xu
- College of Chemistry and Chemical Engineering, Green Catalysis & Synthesis Key Laboratory of Xinyang City, Xinyang Normal University, Xinyang, Henan 464000, China.
| | - Qiuju Zhou
- College of Chemistry and Chemical Engineering, Green Catalysis & Synthesis Key Laboratory of Xinyang City, Xinyang Normal University, Xinyang, Henan 464000, China.
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16
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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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17
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Luo T, Wu H, Liao LH, Wan JP, Liu Y. Synthesis of 3,3-Dihalogenated 2-Aminochromanones via Tandem Dihalogenation and Cyclization of o-Hydroxyarylenaminones with NXS (X = Cl or Br). J Org Chem 2021; 86:15785-15791. [PMID: 34645268 DOI: 10.1021/acs.joc.1c01851] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An unprecedented method for the synthesis of dichlorinated and dibrominated 2-amino-substituted chromanones is developed by employing enaminones and NCS/NBS as starting materials under microwave irradiation. The reactions proceed quickly to deliver products without using any catalyst or additive, thus providing practical access to 3,3-dihalogenated 2-aminochromanones.
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Affiliation(s)
- Tian Luo
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Haozhi Wu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Li-Hua Liao
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
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18
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Llobat A, Escorihuela J, Fustero S, Medio-Simón M. Diastereoselectivity of the Addition of Propargylic Magnesium Reagents to Fluorinated Aromatic Sulfinyl Imines. Org Lett 2021; 23:3691-3695. [PMID: 33881896 PMCID: PMC9490847 DOI: 10.1021/acs.orglett.1c01076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
![]()
The
addition of propargylmagnesium bromide to fluorinated aromatic
sulfinyl imines gave homopropargyl amines with total regio- and diastereoselection.
Complete reversal of diastereoselectivity can be achieved in some
cases using coordinating (THF) or noncoordinating (DCM) solvents.
Substituted propargylic magnesium reagents have been also tested toward
fluorinated aryl sulfinyl imines affording chiral homoallenyl amines
with good yields and selectivity control. DFT calculations helped
to rationalize the origin of the experimental regio- and diastereoselectivities
observed in each case.
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Affiliation(s)
- Alberto Llobat
- Departamento de Química Orgánica, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, València, Spain
| | - Jorge Escorihuela
- Departamento de Química Orgánica, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, València, Spain
| | - Santos Fustero
- Departamento de Química Orgánica, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, València, Spain
| | - Mercedes Medio-Simón
- Departamento de Química Orgánica, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, València, Spain
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19
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Wang L, Jiang M, Shi MQ. Copper-catalyzed synthesis of CN-containing chroman-4-ones via intramolecular radical cascade acyl-cyanation reaction. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Sharma S, Sarma B, Baishya G. Direct synthesis of 4-hydroxycoumarins and 4-hydroxy-6-methyl-2-pyrone containing chroman-4-ones via a silver catalyzed radical cascade cyclization reaction. NEW J CHEM 2021. [DOI: 10.1039/d1nj03437e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A novel AgNO3/K2S2O8 catalyzed radical cascade cyclization reaction of 2-(allyloxy)arylaldehydes with 4-hydroxycoumarins and 4-hydroxy-6-methyl-2-pyrone produces two new series of chroman-2-ones.
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Affiliation(s)
- Suraj Sharma
- Chemical Science & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Bipul Sarma
- Department of Chemical Sciences, Tezpur University, Tezpur, 784028, India
| | - Gakul Baishya
- Chemical Science & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
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21
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Du K, Zhang Z, Sheng W. Copper-Catalyzed the Synthesis of 3-Trifluoromethylchromone via Trifluoromethyl Radical Addition Tandem Cyclization Reaction of 2-Hydroxyphenyl Enaminones. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202102007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Tang L, Yang F, Yang Z, Chen H, Cheng H, Zhang S, Zhou Q, Rao W. Application of Bifunctional 2-Amino-1,4-naphthoquinones in Visible-Light-Promoted Photocatalyst-Free Alkene Perfluoroalkyl-Alkenylation. Org Lett 2020; 23:519-524. [PMID: 33382626 DOI: 10.1021/acs.orglett.0c04036] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple and practical photochemical strategy for intermolecular perfluoroalkyl-alkenylation of alkenes with 2-amino-1,4-naphthoquinones and perfluoroalkyl iodides has been demonstrated under visible-light irradiation. Mechanistic studies reveal that easily available 2-amino-1,4-naphthoquinone substrates can serve as efficient photosensitizers to activate perfluoroalkyl iodides through a photoredox process. Therefore, the developed radical relay reaction proceeds smoothly without additional transition metals and photocatalysts.
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Affiliation(s)
- Lin Tang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China.,Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the Sourth of Henan, Xinyang 464000, China
| | - Fang Yang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Zhen Yang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Hanfei Chen
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Hao Cheng
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Shuaifei Zhang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Qiuju Zhou
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Weihao Rao
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
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23
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Li GH, Han QQ, Sun YY, Chen DM, Wang ZL, Xu XM, Yu XY. Visible-light induced cascade radical cyclization of sulfinic acids and o-(allyloxy)arylaldehydes towards functionalized chroman-4-ones. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.03.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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24
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Chen DM, Sun YY, Han QQ, Wang ZL. Hypervalent iodine mediated radical cyclization of o-(allyloxy)arylaldehydes and N-hydroxyphthalimide (NHPI) under metal-free conditions. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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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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26
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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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27
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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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28
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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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29
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Wu Y, Zhang M, Zhang Y, Li M, Feng W, Zheng X, Tang L. NBS-activated cross-dehydrogenative esterification of carboxylic acids with DMSO. Org Chem Front 2020. [DOI: 10.1039/d0qo00617c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient and versatile cross-dehydrogenative esterification of carboxylic acids with DMSO for preparing (methylsulfinyl)methyl esters has been developed in the presence of N-bromosuccinimide.
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Affiliation(s)
- Ya Wu
- School of Pharmacy & Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province
- Henan University of Chinese Medicine
- Zhengzhou
- China
| | - Mengsha Zhang
- School of Pharmacy & Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province
- Henan University of Chinese Medicine
- Zhengzhou
- China
| | - Yanli Zhang
- School of Pharmacy & Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province
- Henan University of Chinese Medicine
- Zhengzhou
- China
| | - Mingyang Li
- School of Pharmacy & Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province
- Henan University of Chinese Medicine
- Zhengzhou
- China
| | - Weisheng Feng
- School of Pharmacy & Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province
- Henan University of Chinese Medicine
- Zhengzhou
- China
| | - Xiaoke Zheng
- School of Pharmacy & Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province
- Henan University of Chinese Medicine
- Zhengzhou
- China
| | - Lin Tang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang
- China
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30
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Keerthika K, Nath S, Geetharani K. Transition-metal-free trifluoromethylative difunctionalization of olefins and alkynes: approaches and challenges ahead. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01692f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Transition metal free trifluoromethylative difunctionalization of olefins and alkynes represents one of the most efficient methods to generate pharmaceutically and agrochemically important organofluoride compounds.
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Affiliation(s)
- K. Keerthika
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore-560012
- India
| | - Shounak Nath
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore-560012
- India
| | - K. Geetharani
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore-560012
- India
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31
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Kumar S, Padala K. The recent advances in K2S2O8-mediated cyclization/coupling reactions via an oxidative transformation. Chem Commun (Camb) 2020; 56:15101-15117. [DOI: 10.1039/d0cc06036d] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Recently the K2S2O8 mediated cyclization/coupling reactions to construct carbon–carbon/carbon–heteroatom bond via oxidative transformation is became much interesting in organic synthesis.
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Affiliation(s)
- Sumit Kumar
- Department of Chemistry
- School of Advanced Science
- Vellore Institute of Technology
- Vellore
- India
| | - Kishor Padala
- Department of Chemistry
- School of Advanced Science
- Vellore Institute of Technology
- Vellore
- India
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32
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Gao F, Meng FX, Du JY, Zhang S, Huang HL. One-Step Synthesis of Trifluoroethylated Chromones via Radical Cascade Cyclization-Coupling of 2-(Allyloxy)arylaldehydes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901636] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Fei Gao
- Institute of Molecular Medicine; Renji Hospital, School of Medicine; Shanghai Jiao Tong University; 200127 Shanghai China
| | - Fan-Xiao Meng
- College of Chemistry and Chemical Engineering; Liaocheng University; 252059 Liaocheng Shandong China
| | - Ji-Yuan Du
- College of Chemistry and Chemical Engineering; Liaocheng University; 252059 Liaocheng Shandong China
| | - Shiyan Zhang
- Institute of Molecular Medicine; Renji Hospital, School of Medicine; Shanghai Jiao Tong University; 200127 Shanghai China
| | - Hong-Li Huang
- College of Chemistry and Chemical Engineering; Liaocheng University; 252059 Liaocheng Shandong China
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33
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Jung HI, Kim Y, Kim DY. Electrochemical trifluoromethylation/semipinacol rearrangement sequences of alkenyl alcohols: synthesis of β-CF 3-substituted ketones. Org Biomol Chem 2019; 17:3319-3323. [PMID: 30869722 DOI: 10.1039/c9ob00373h] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrochemical oxidative radical trifluoromethylation/semipinacol rearrangement sequences of alkenyl alcohols were developed in this study. This approach is environmentally benign and uses the shelf-stable Langlois reagent as a trifluoromethyl radical precursor and electrons as the oxidizing reagents. The present protocol offers a facile route to prepare β-trifluoromethylated ketone derivatives.
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Affiliation(s)
- Hye Im Jung
- Department of Chemistry, Soonchunhyang University, Asan 31538, Chungnam, Republic of Korea.
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34
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Tang L, Yang Z, Yang F, Huang Y, Chen H, Cheng H, Song W, Ren B, Zhou Q. Catalyst‐Free α‐Aminoxylation of 1,3‐Dicarbonyl Compounds with TEMPO Using Selectfluor as an Oxidant. ChemistrySelect 2019. [DOI: 10.1002/slct.201903856] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Lin Tang
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 P. R. China
| | - Zhen Yang
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 P. R. China
| | - Fang Yang
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 P. R. China
| | - Yifan Huang
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 P. R. China
| | - Hanfei Chen
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 P. R. China
| | - Hao Cheng
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 P. R. China
| | - Weiyan Song
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 P. R. China
| | - Bo Ren
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 P. R. China
| | - Qiuju Zhou
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 P. R. China
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35
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Zhou MD, Peng Z, Li L, Wang H. Visible-light-promoted organic dye catalyzed perfluoroalkylation of hydrazones under mild conditions. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151124] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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36
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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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37
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Wu Y, Zhang Y, Yang Z, Jiao J, Zheng X, Feng W, Zhang M, Cheng H, Tang L. Dual Roles of tert-Butyl Nitrite in the Transition Metal- and External Oxidant-Free Trifluoromethyloximation of Alkenes. CHEMSUSCHEM 2019; 12:3960-3966. [PMID: 31359635 DOI: 10.1002/cssc.201901856] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 07/29/2019] [Indexed: 06/10/2023]
Abstract
By employing tert-butyl nitrite as both nitrogen source and oxidant, the trifluoromethyloximation of alkenes proceeds smoothly in a free-radical process. The developed difunctionalization reaction enables practical and efficient synthesis of a wide range of α-CF3 ketoximes in moderate yields with excellent regioselectivity. This method features the use of readily available and stable alkenes as substrates and inexpensive CF3 SO2 Na as a CF3 reagent, no involvement of transition metals or external oxidant, and room-temperature conditions. Moreover, a scale-up of the reaction, further transformation of the products into various valuable CF3 -containing compounds, and removal of the trifluoromethyl group are readily achieved.
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Affiliation(s)
- Ya Wu
- School of Pharmacy &, Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment &, Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, 450046, P. R. China
| | - Yanli Zhang
- School of Pharmacy &, Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment &, Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, 450046, P. R. China
| | - Zhen Yang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P. R. China
| | - Jingchao Jiao
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P. R. China
| | - Xiaoke Zheng
- School of Pharmacy &, Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment &, Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, 450046, P. R. China
| | - Weisheng Feng
- School of Pharmacy &, Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment &, Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, 450046, P. R. China
| | - Mengsha Zhang
- School of Pharmacy &, Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment &, Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, 450046, P. R. China
| | - Hao Cheng
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P. R. China
| | - Lin Tang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P. R. China
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38
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Yang Z, Chen S, Yang F, Zhang C, Dou Y, Zhou Q, Yan Y, Tang L. PPh3
/Selectfluor-Mediated Transformation of Carboxylic Acids into Acid Anhydrides and Acyl Fluorides and Its Application in Amide and Ester Synthesis. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901092] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhen Yang
- College of Chemistry and Chemical Engineering; Xinyang Normal University; 464000 Xinyang P. R. China
| | - Siwei Chen
- College of Chemistry and Chemical Engineering; Xinyang Normal University; 464000 Xinyang P. R. China
| | - Fang Yang
- College of Chemistry and Chemical Engineering; Xinyang Normal University; 464000 Xinyang P. R. China
| | - Chenxi Zhang
- College of Chemistry and Chemical Engineering; Xinyang Normal University; 464000 Xinyang P. R. China
| | - You Dou
- College of Chemistry and Chemical Engineering; Xinyang Normal University; 464000 Xinyang P. R. China
| | - Qiuju Zhou
- College of Chemistry and Chemical Engineering; Xinyang Normal University; 464000 Xinyang P. R. China
| | - Yizhe Yan
- School of Food and Biological Engineering; Zhengzhou University of Light Industry; 450000 Zhengzhou P. R. China
| | - Lin Tang
- College of Chemistry and Chemical Engineering; Xinyang Normal University; 464000 Xinyang P. R. China
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39
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Tang L, Yang Z, Jiao J, Cui Y, Zou G, Zhou Q, Zhou Y, Rao W, Ma X. Chemoselective Mono- and Difluorination of 1,3-Dicarbonyl Compounds. J Org Chem 2019; 84:10449-10458. [PMID: 31335142 DOI: 10.1021/acs.joc.9b01808] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
By altering the amount of Selectfluor, the highly selective mono- and difluorination of 1,3-dicarbonyl compounds has been achieved, affording a variety of 2-fluoro- and 2,2-difluoro-1,3-dicarbonyl compounds in good to excellent yields. The reaction can be readily performed in aqueous media without any catalyst and base, which features practical and convenient fluorination. Importantly, a gram-scale reaction, transformation of 2-fluoro-1,3-diphenylpropane-1,3-dione to 4-fluoro-1,3,5-triphenyl-1H-pyrazole, and chlorination and bromination of 1,3-dicarbonyl compounds are realized to further exhibit its synthetic utility.
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Affiliation(s)
- Lin Tang
- Henan Key Laboratory of Utilization of Non-metallic Mineral in the Sourth of Henan , Xinyang 464000 , P. R. China
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40
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Li L, Ma Y, Tang M, Guo J, Yang Z, Yan Y, Ma X, Tang L. Photoredox‐Catalyzed Oxydifluoroalkylation of Styrenes for Access to Difluorinated Ketones with DMSO as an Oxidant. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900521] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lixin Li
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 People's Republic of China
| | - Yan‐Na Ma
- College of Chemistry and Chemical EngineeringHenan Normal University Xinxiang 453000 People's Republic of China
| | - Mi Tang
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 People's Republic of China
| | - Jing Guo
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 People's Republic of China
| | - Zhen Yang
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 People's Republic of China
| | - Yizhe Yan
- School of Food and Biological EngineeringZhengzhou University of Light Industry Zhengzhou 450000 People's Republic of China
| | - Xiantao Ma
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 People's Republic of China
| | - Lin Tang
- College of Chemistry and Chemical EngineeringXinyang Normal University Xinyang 464000 People's Republic of China
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41
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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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42
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Li M, Zhu X, Qiu Y, Han Y, Xia Y, Wang C, Li X, Wei W, Liang Y. Metal‐Free Promoted CF
2
/CF
3
‐Difunctionalization of Unactivated Alkenes. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900231] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ming Li
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Xin‐Yu Zhu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Yi‐Feng Qiu
- College of Chemistry and Chemical EngineeringNorthwest Normal University Lanzhou, Gansu 730070 People's Republic of China
| | - Ya‐Ping Han
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Yu Xia
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Cui‐Tian Wang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Xue‐Song Li
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Wan‐Xu Wei
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Yong‐Min Liang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
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43
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Zhang Z, Zhu L, Li C. Copper‐Catalyzed Carbotrifluoromethylation of Unactivated Alkenes Driven by Trifluoromethylation of Alkyl Radicals. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900075] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Zhenzhen Zhang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic ChemistryChinese Academy of Sciences, 345 Lingling Road Shanghai 200032 China
| | - Lin Zhu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic ChemistryChinese Academy of Sciences, 345 Lingling Road Shanghai 200032 China
| | - Chaozhong Li
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic ChemistryChinese Academy of Sciences, 345 Lingling Road Shanghai 200032 China
- School of Materials and Chemical EngineeringNingbo University of Technology, No. 201 Fenghua Road, Ningbo Zhejiang 315211 China
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44
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Guo J, Xu C, Liu X, Wang M. Aryltrifluoromethylative cyclization of unactivated alkenes by the use of PhICF 3Cl under catalyst-free conditions. Org Biomol Chem 2019; 17:2162-2168. [PMID: 30720035 DOI: 10.1039/c8ob03189d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A concise and catalyst-free aryltrifluoromethylative cyclization of unactivated alkenes has been developed herein. The use of PhICF3Cl as a powerful trifluoromethylating agent allows easy transformations. A set of trifluoroethylated carbocycles and aza-hereocycles were efficiently synthesized in good yield and selectivity. A broad substrate scope, mild reaction conditions, and easy operation would make this method well-suited for applications.
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Affiliation(s)
- Jia Guo
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, China
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45
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Xiao YM, Liu Y, Mai WP, Mao P, Yuan JW, Yang LR. A Novel and Facile Synthesis of Chroman-4-one Derivatives via
Cascade Radical Cyclization Under Metal-free Condition. ChemistrySelect 2019. [DOI: 10.1002/slct.201900147] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yong-Mei Xiao
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
| | - Yang Liu
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
| | - Wen-Peng Mai
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
- School of Materials and Chemical Engineering; Henan University of Engineering; Zhengzhou 450006 China
| | - Pu Mao
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
| | - Jin-Wei Yuan
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
| | - Liang-Ru Yang
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
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46
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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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47
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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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48
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Huang Y, Hong H, Zou Z, Liao C, Lu J, Qin Y, Li Y, Chen L. Electrochemical vicinal aminotrifluoromethylation of alkenes: high regioselective acquisition of β-trifluoromethylamines. Org Biomol Chem 2019; 17:5014-5020. [DOI: 10.1039/c9ob00717b] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A high-regioselective electrochemical aminotrifluoromethylation of alkenes leading to β-trifluoromethylamines using CF3SO2Na as a trifluoromethyl precursor and acetonitrile as an N-nucleophile was achieved.
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Affiliation(s)
- Yubing Huang
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- China
| | - Huanliang Hong
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- China
| | - Zirong Zou
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- China
| | - Chunshu Liao
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- China
| | - Jingjun Lu
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- China
| | - Yongwei Qin
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- China
| | - Yibiao Li
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- China
| | - Lu Chen
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- China
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49
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Guo J, Xu C, Wang L, Huang W, Wang M. Catalyst-free and selective trifluoromethylative cyclization of acryloanilides using PhICF3Cl. Org Biomol Chem 2019; 17:4593-4599. [DOI: 10.1039/c9ob00601j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Trifluoromethylative cyclization and biscyclization reactions of acryloanilides efficiently occurred under catalyst-free conditions.
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Affiliation(s)
- Jia Guo
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- College of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Cong Xu
- National Engineering Laboratory for Druggable Gene and Protein Screening
- School of Life Sciences
- Northeast Normal University
- Changchun
- China
| | - Ling Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- College of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Wanqiao Huang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- College of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Mang Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- College of Chemistry
- Northeast Normal University
- Changchun
- China
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