1
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Zhang Z, Sun H, Zhang M, Song S, Peng M, Dai W, Wang Y, Yu F. Switchable Skeletal Rearrangement of Hexahydro-4 H-indol-4-ones: Divergent Synthesis of Dihydroxy-4 H-cyclopenta[ b]pyridin-4-ones and 8-Alkenyl Oxepane-2,6-diones. Org Lett 2024; 26:4205-4211. [PMID: 38743606 DOI: 10.1021/acs.orglett.4c00908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
An unprecedented base-controlled selective skeletal rearrangement reaction of hexahydro-4H-indol-4-ones has been developed. In this protocol, highly functionalized dihydroxy-4H-cyclopenta[b]pyridin-4-ones and 8-alkenyl oxepane-2,6-diones were prepared with a broad substrate scope and high chemoselectivity in moderate to excellent yields selectively by modulating LiOH and Et3N. In addition, the newly formed 8-alkenyl oxepane-2,6-dione scaffolds could be easily further derivatized to 5-(pyrrol-2-yl)dihydrofuran-2(3H)-ones through a rare intramolecular rearrangement reaction.
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Affiliation(s)
- Zhilai Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. of China
| | - Haifeng Sun
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. of China
| | - Mingshuai Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. of China
| | - Siyu Song
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. of China
| | - Menglin Peng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. of China
| | - Weifeng Dai
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. of China
| | - Yongchao Wang
- College of Vocational and Technical Education, Yunnan Normal University, Kunming 650092, People's Republic of China
| | - Fuchao Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. of China
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2
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Yang Q, Huang S, Yin L, Wang Z, Chen X, Huang C. NBS-Promoted Synthesis of Thiocyanated Aminomaleimides and Site-Selective Intramolecular Cyclization Access to 1,4-Benzothiazepines via S-CN Bond Cleavage. J Org Chem 2024; 89:5266-5276. [PMID: 38592168 DOI: 10.1021/acs.joc.3c02607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
A transition metal-free concise and efficient protocol for the synthesis of thiocyanated aminomaleimides and benzo[e][1,4]thiazepine derivatives has been developed. The method involves an initial α-C-H thiocyanation of aminomaleimides with KSCN and TEMPO-mediated tandem S-CN bond cleavage/intramolecular cyclization substitution processes, which enables the formation of seven-membered S/N-heterocycles. This synthetic strategy provides a reliable method for the synthesis of biologically interesting benzo[e][1,4]thiazepine derivatives by using KSCN as sulfur sources as well as expands the application of enaminones thiocyanation reactions in heterocycles synthesis.
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Affiliation(s)
- Qi Yang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
- School of Chemistry and Resource Engineering, Honghe University, Mengzi 661199, P.R. China
| | - Shuntao Huang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
| | - Lu Yin
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
| | - Zhuoyu Wang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
| | - Xuebing Chen
- School of Chemistry and Resource Engineering, Honghe University, Mengzi 661199, P.R. China
| | - Chao Huang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
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3
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Luo W, Zheng X, Zhang F, Luo Q, Deng WT, Long L, Yu D, Wang ZX, Chen Z. Synthesis of functionalized tetrahydrodibenzo[ b, g][1,8]naphthyridin-1(2 H)-ones through base-promoted annulation of quinoline-derived dipolarophiles and cyclic enaminones. Org Biomol Chem 2023. [PMID: 37997680 DOI: 10.1039/d3ob01547e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
An eco-friendly and metal-free method for the synthesis of tetrahydrodibenzo[b,g][1,8]naphthyridin-1(2H)-ones was established. Quinoline-derived dipolarophiles and cyclic enaminones as starting materials undergo a 1,4-Michael addition/SNAr tandem annulation reaction affording the target products. This approach features transition metal-free conditions, good functional group tolerance and operational simplicity.
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Affiliation(s)
- Wenjun Luo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P.R. China.
| | - Xinghua Zheng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P.R. China.
| | - Fanglian Zhang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P.R. China.
| | - Qiuya Luo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P.R. China.
| | - Wen-Ting Deng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P.R. China.
| | - Lipeng Long
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P.R. China.
| | - Daohong Yu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P.R. China.
| | - Zhong-Xia Wang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P.R. China.
| | - Zhengwang Chen
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P.R. China.
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4
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Sun Y, Liu Z, Liu D, Zhang M, Chen L, Chai Z, Chen XB, Yu F. Synthesis of 4-Alkylated 1,4-Dihydropyridines: Fe(II)-Mediated Oxidative Cascade Cyclization Reaction of Cyclic Ethers with Enaminones. J Org Chem 2023; 88:11627-11636. [PMID: 37556793 DOI: 10.1021/acs.joc.3c00925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Syntheses of highly functionalized 4-alkylated 1,4-dihydropyridines (1,4-DHPs) from cyclic ethers and enaminones via iron(II)-mediated oxidative free radical cascade C(sp3)-H bond functionalization/C(sp3)-O bond cleavage/cyclization reaction have been first developed. This novel synthetic strategy offers an alternative method for the construction of 1,4-DHPs by using esters as the C4 sources, as well as expands the application of ethers in heterocycle synthesis.
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Affiliation(s)
- Yulin Sun
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Zhuoyuan Liu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Donghan Liu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Mingshuai Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Longkun Chen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Zhangmengjie Chai
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Xue-Bing Chen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
- College of Science, Honghe University, Mengzi 661199 Yunnan, P. R. China
| | - Fuchao Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
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5
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Liu D, Song S, Chen L, Zhang M, Liu Z, Lu X, Huang J, Yu F. Access to thiionized-, selenolized-, and alkylated 5-alkylidene 3-pyrrolin-2-one derivatives via a regioselective oxidative annulation reaction. Org Biomol Chem 2023; 21:2596-2602. [PMID: 36891944 DOI: 10.1039/d3ob00014a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
A metal-free regioselective oxidative annulation reaction of readily available 2,4-pentanediones with primary amines has been described. This protocol provides a divergent strategy for the incorporation of various radical donors into 5-alkylidene 3-pyrrolin-2-one skeletons, producing a variety of thiionized-, selenolized-, and alkylated 5-alkylidene 3-pyrrolin-2-one derivatives. Moreover, the diverse synthetic transformations of the 5-alkylidene 3-pyrrolin-2-one products were also investigated.
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Affiliation(s)
- Donghan Liu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
| | - Siyu Song
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
| | - Longkun Chen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
| | - Mingshuai Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
| | - Zhuoyuan Liu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
| | - Xihang Lu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
| | - Jiuzhong Huang
- School of Pharmacy and Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou, 341000, P. R. China.
| | - Fuchao Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
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6
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Chen D, Zhou L, Liu Y, Wan JP. Three-component synthesis of N-naphthyl pyrazoles via Rh(III)-catalyzed cascade pyrazole annulation and Satoh-Miura benzannulation. Chem Commun (Camb) 2023; 59:4036-4039. [PMID: 36924202 DOI: 10.1039/d3cc00649b] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
The synthesis of N-naphthyl pyrazoles has been realized by the direct three-component reactions of enaminones, aryl hydrazine hydrochlorides and internal alkynes via Rh(III) catalysis. The synthetic reactions employing simple substrates lead to simultaneous construction of dual cyclic moieties, including a pyrazole ring and a phenyl ring, via sequential formation of two C-N and three C-C bonds.
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Affiliation(s)
- Demao Chen
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China.
| | - Liyun Zhou
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China.
| | - Yunyun Liu
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China.
| | - Jie-Ping Wan
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China. .,International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
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7
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Plater MJ, Harrison WTA. Heterocyclic Synthesis of Crowded Aposafranones: Structure of 1-Methyl-8-dimethylamino-10-phenylphenazin-2-(10H)one and Related Compounds. ChemistryOpen 2023; 12:e202300007. [PMID: 36782392 PMCID: PMC9925832 DOI: 10.1002/open.202300007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 01/26/2023] [Indexed: 02/15/2023] Open
Abstract
Oxidative condensation of three p-phenylenediamines with 3-hydroxy-2-methyl-N-(phenylamino)benzene gives new coloured aposafranones. 2-Methylresorcinol is easy to convert into the asymmetric building block 3-hydroxy-2-methyl-N-(phenylamino)benzene with aniline. The aposafranones are sterically crowded because of the 1-methyl and N-phenyl groups. The UV/Vis absorption maxima are in the range 530-545 nm.
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Affiliation(s)
- M. John Plater
- Department of ChemistryUniversity of Aberdeen Meston WalkAberdeenAB24 3UEUnited Kingdom
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8
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Plater MJ, Harrison WTA. Reactions of 4,5-difluoro-1,2-dinitrobenzene with amines in dimethylformamide or EtOH. JOURNAL OF CHEMICAL RESEARCH 2023. [DOI: 10.1177/17475198231154812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Substitution reactions of 1,2-difluoro-4,5-dinitrobenzene were explored in dimethylformamide alone and with KOH/H2O, Hünig’s base or Et3N and with Me2NHCl/Et3N in EtOH. The fluorine atoms were always displaced in preference to the nitro groups. Three compounds were prepared from these studies and were characterised by X-ray single crystal structure determinations.
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Affiliation(s)
- M John Plater
- Department of Chemistry, University of Aberdeen, Aberdeen, UK
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9
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Wang S, Li R, Chen S, Mao G, Shao W, Deng GJ. Chemoselective synthesis of α-carboline derivatives via hypervalent iodine-catalyzed [3+3] annulation under metal-free conditions. GREEN SYNTHESIS AND CATALYSIS 2023. [DOI: 10.1016/j.gresc.2023.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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10
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Rao K, Chai Z, Zhou P, Liu D, Sun Y, Yu F. Transition-metal-free approach to quinolines via direct oxidative cyclocondensation reaction of N,N-dimethyl enaminones with o-aminobenzyl alcohols. Front Chem 2022; 10:1008568. [PMID: 36212061 PMCID: PMC9532769 DOI: 10.3389/fchem.2022.1008568] [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: 08/01/2022] [Accepted: 08/09/2022] [Indexed: 11/13/2022] Open
Abstract
A transition-metal-free method for the construction of 3-substituted or 3,4-disubstituted quinolines from readily available N,N-dimethyl enaminones and o-aminobenzyl alcohols is reported. The direct oxidative cyclocondensation reaction tolerates broad functional groups, allowing the efficient synthesis of various quinolines in moderate to excellent yields. The reaction involves a C (sp3)-O bond cleavage and a C=N bind and a C=C bond formation during the oxidative cyclization process, and the mechanism was proposed.
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11
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Zeng J, Wan JP, Liu Y. Photocatalytic C–H Thiocyanation of NH 2-Enaminones and the Tunable Synthetic Routes to 2-Aminothiazoles and 2-Thiazolinones. J Org Chem 2022; 87:13195-13203. [DOI: 10.1021/acs.joc.2c01667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Junlong Zeng
- National Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Jie-Ping Wan
- National Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Yunyun Liu
- National Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Zhejiang 312000, P.R. China
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12
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Wu H, Luo T, Wan JP, Jiang J, Liu Y. Nickel‐Catalyzed Tandem Ring Contraction of TEMPO and C‐N Bond Transamination of Enaminones toward Amino Diversity of Enaminones. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Haozhi Wu
- Jiangxi Normal University College of Chemistry and Chemical Engineering CHINA
| | - Tian Luo
- Jiangxi Normal University College of Chemistry and Chemical Engineering CHINA
| | - Jie-Ping Wan
- Jiangxi Normal University College of Chemistry and Chemical Engineering CHINA
| | - Jianwen Jiang
- Jiangxi Normal University College of Chemistry and Chemical Engineering CHINA
| | - Yunyun Liu
- Jiangxi Normal University College of Chemistry and Chemical Engineering 99 Ziyang Road 330022 Nanchang CHINA
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13
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Zhang B, Fu Z, Yang H, Liu D, Sun Y, Xu Y, Yu F, Yan S. Transition‐Metal‐Free C(
sp
2
)−H Phosphorothiolation/Cyclization of
o
‐Hydroxyarylenaminones: Access to
S
‐3‐Chromon Phosphorothioates. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Biao Zhang
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Zhonghui Fu
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Haoqi Yang
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Donghan Liu
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Yulin Sun
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Yu Xu
- School of nursing Xi'An Innovation College of Yan'An University Xi'An 710100 People's Republic of China
| | - Fuchao Yu
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Sheng‐Jiao Yan
- Key Laboratory of Medicinal Chemistry for Natural Resources Ministry of Education and Yunnan Province School of Chemical Science and Technology Yunnan University Kunming 650091 People's Republic of China
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14
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Liu D, Lu X, Zhang Q, Zhao Y, Zhang B, Sun Y, Dai W, Xu Y, Yu F. Facile approach to multifunctionalized 5-alkylidene-3-pyrrolin-2-ones via regioselective oxidative cyclization of 2,4-pentanediones with primary amines and sodium sulfinates. Org Chem Front 2022. [DOI: 10.1039/d2qo00473a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Highly functionalized 5-alkylidene-3-pyrrolin-2-ones were efficiently synthesized via a four-component cascade cyclization/sulfonylation reaction between readily available 2,4-pentanediones, primary amines and sodium sulfinates under mild conditions.
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Affiliation(s)
- Donghan Liu
- Faculty of Life Science and Technology, Kunming, University of Science and Technology, Kunming, 650500, P. R. China
| | - Xihang Lu
- Faculty of Life Science and Technology, Kunming, University of Science and Technology, Kunming, 650500, P. R. China
| | - Qiaohe Zhang
- Faculty of Life Science and Technology, Kunming, University of Science and Technology, Kunming, 650500, P. R. China
| | - Yuxuan Zhao
- Faculty of Life Science and Technology, Kunming, University of Science and Technology, Kunming, 650500, P. R. China
| | - Biao Zhang
- Faculty of Life Science and Technology, Kunming, University of Science and Technology, Kunming, 650500, P. R. China
| | - Yulin Sun
- Faculty of Life Science and Technology, Kunming, University of Science and Technology, Kunming, 650500, P. R. China
| | - Weifeng Dai
- Faculty of Life Science and Technology, Kunming, University of Science and Technology, Kunming, 650500, P. R. China
| | - Yu Xu
- School of nursing, Xi'an Innovation College of Yan'an University, Xi'an, 710100, P. R. China
| | - Fuchao Yu
- Faculty of Life Science and Technology, Kunming, University of Science and Technology, Kunming, 650500, P. R. China
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15
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Che Y, Qi X, Qu W, Shi B, Lin Q, Yao H, Zhang Y, Wei T. Synthetic strategies of phenazine derivatives: a review. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yu‐Xin Che
- Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu China
| | - Xiao‐Ni Qi
- Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu China
| | - Wen‐Juan Qu
- Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu China
| | - Bing‐Bing Shi
- Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu China
| | - Qi Lin
- Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu China
| | - Hong Yao
- Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu China
| | - You‐Ming Zhang
- Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu China
| | - Tai‐Bao Wei
- Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu China
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16
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Liu T, Wan JP, Liu Y. Metal-free enaminone C-N bond cyanation for the stereoselective synthesis of ( E)- and ( Z)-β-cyano enones. Chem Commun (Camb) 2021; 57:9112-9115. [PMID: 34498638 DOI: 10.1039/d1cc03292e] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A highly practical method for C-CN bond formation by C-N bond cleavage on enaminones leading to the efficient synthesis of β-cyano enones is developed. The reactions take place efficiently to provide (E)-β-cyano enones with only a molecular iodine catalyst. In addition, the additional employment of oxalic acid enables the selective synthesis of (Z)-β-cyano enones.
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Affiliation(s)
- Ting Liu
- 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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17
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Zhang B, Zhou P, Xu H, Huang J, Sun Y, Liu D, Yu F. Copper(II)‐Mediated Intermolecular Radical [3+2]‐Annulation of
N
,
N
‐Dimethyl Enaminones: Direct Access to 5‐Acyl‐3‐Furancarboxaldehydes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100633] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Biao Zhang
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Pan Zhou
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Hui Xu
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Jiuzhong Huang
- School of Pharmacy Gannan Medical University Ganzhou 341000 People's Republic of China
| | - Yulin Sun
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Donghan Liu
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Fuchao Yu
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
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