1
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Zhang S, Zhu HT, Xi JJ, Wang SB, Chang X, Shen CP, Feng Y, Zhang ZY, Zhao MT, Zhang LK, Li M, Jin X, Zhou AX, Zhou NN. Brønsted Acid-Catalyzed Intramolecular Tandem Double Cyclization of γ-Hydroxy Acetylenic Ketones with Alkynes into Naphtho[1,2- b]furan-3-ones. J Org Chem 2024; 89:1633-1647. [PMID: 38235569 DOI: 10.1021/acs.joc.3c02300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
A metal-free and atom-economic route for the synthesis of naphtho[1,2-b]furan-3-ones has been realized via p-TsOH·H2O-catalyzed intramolecular tandem double cyclization of γ-hydroxy acetylenic ketones with alkynes in formic acid. The benzene-linked furanonyl-ynes are the key intermediates obtained by the scission/recombination of C-O double bonds. Further, the structural modifications of the representative product were implemented by reduction, demethylation, substitution, and [5 + 2]-cycloaddition.
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Affiliation(s)
- Sen Zhang
- College of Chemistry and Chemical Engineering, Shannxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Hai-Tao Zhu
- College of Chemistry and Chemical Engineering, Shannxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Jia-Jun Xi
- College of Chemistry and Chemical Engineering, Shannxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China
| | - San-Bao Wang
- College of Chemistry and Chemical Engineering, Shannxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Xin Chang
- College of Chemistry and Chemical Engineering, Shannxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Cheng-Ping Shen
- College of Chemistry and Chemical Engineering, Shannxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Yue Feng
- College of Chemistry and Chemical Engineering, Shannxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Zhao-Yang Zhang
- College of Chemistry and Chemical Engineering, Shannxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Meng-Ting Zhao
- College of Chemistry and Chemical Engineering, Shannxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Li-Kun Zhang
- College of Chemistry and Chemical Engineering, Shannxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Mi Li
- Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - Xiaojie Jin
- Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - An-Xi Zhou
- key Laboratory of Applied Organic Chemistry, Higher Institutions of Jiangxi Province, Shangrao Normal University, Shangrao 334000, China
| | - Ni-Ni Zhou
- College of Chemistry and Chemical Engineering, Shannxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China
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2
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Cao TY, Qi L, Wang LJ. Switchable Regioselective 7- endo or 6- exo Iodocyclization of O-Homoallyl Benzimidates. J Org Chem 2023. [PMID: 36757344 DOI: 10.1021/acs.joc.2c02729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
We present a facile switchable regioselective 7-endo or 6-exo iodocyclization of O-homoallyl benzimidates here, which affords various iodo-substituted 1,3-oxazines and tetrahydro-1,3-oxazepines in a controllable manner. The products can further undergo substitution reactions to afford a series of rich functionalized target heterocyclic molecules. The developed protocol has the advantages of mild conditions, simple operation, and excellent functional group compatibility.
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Affiliation(s)
- Tong-Yang Cao
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
| | - Lin Qi
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
| | - Li-Jing Wang
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
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3
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Ashtekar KD, Gholami H, Moemeni M, Chakraborty A, Kiiskila L, Ding X, Toma E, Rahn C, Borhan B. A Mechanistically Inspired Halenium Ion Initiated Spiroketalization: Entry to Mono- and Dibromospiroketals. Angew Chem Int Ed Engl 2022; 61:e202115173. [PMID: 34881491 PMCID: PMC9254888 DOI: 10.1002/anie.202115173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Indexed: 11/09/2022]
Abstract
Employing halenium affinity (HalA) as a guiding tool, the weak nucleophilic character of alkyl ketones was modulated by the templating effect of a tethered 2-tetrahydropyranyl(THP)-protected alcohol towards realizing a bromenium ion initiated spiroketalization cascade. Addition of ethanol aided an early termination of the cascade by scavenging the THP group after the halofunctionalization stage, furnishing monobromospiroketals. Alternatively, exclusion of ethanol from the reaction mixture biased the transient oxocarbenium towards α-deprotonation that precedes a second bromofunctionalization event thus, furnishing dibrominated spiroketals. The regio- and stereoselectivity exploited in the current methodology provides a novel and rapid access to the dibrominated spiroketal motifs exhibited by several natural products.
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Affiliation(s)
| | | | - Mehdi Moemeni
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
| | - Ankush Chakraborty
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
| | - Lindsey Kiiskila
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
| | - Xinliang Ding
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
| | - Edmond Toma
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
| | - Christopher Rahn
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
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4
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Ashtekar KD, Gholami H, Moemeni M, Chakraborty A, Kiiskila L, Ding X, Toma E, Rahn C, Borhan B. A Mechanistically Inspired Halenium Ion Initiated Spiroketalization: Entry to Mono‐ and Dibromospiroketals. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115173] [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)
- Kumar Dilip Ashtekar
- Cancer Biology Institute Yale School of Medicine West Haven Connecticut 06516 USA
| | - Hadi Gholami
- Department of Chemistry Michigan State University East Lansing MI 48824 USA
| | - Mehdi Moemeni
- Department of Chemistry Michigan State University East Lansing MI 48824 USA
| | - Ankush Chakraborty
- Department of Chemistry Michigan State University East Lansing MI 48824 USA
| | - Lindsey Kiiskila
- Department of Chemistry Michigan State University East Lansing MI 48824 USA
| | - Xinliang Ding
- Department of Chemistry Michigan State University East Lansing MI 48824 USA
| | - Edmond Toma
- Department of Chemistry Michigan State University East Lansing MI 48824 USA
| | - Christopher Rahn
- Department of Chemistry Michigan State University East Lansing MI 48824 USA
| | - Babak Borhan
- Department of Chemistry Michigan State University East Lansing MI 48824 USA
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5
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Jiang S, Ma H, Yang R, Song XR, Xiao Q. Recent advances in the cascade reactions of enynols/diynols for the synthesis of carbo- and heterocycles. Org Chem Front 2022. [DOI: 10.1039/d2qo01154a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review summaries a view of the advances in the cascade reactions of enynols/diynols for the construction of carbo- and heterocycles.
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Affiliation(s)
- Shimin Jiang
- Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Haojie Ma
- Key Laboratory of New Energy & New Functional Materials, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P. R. China
| | - Ruchun Yang
- Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Xian-Rong Song
- Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Qiang Xiao
- Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
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6
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Baire B, Santhi J. Ag(I)-Promoted homo-dimerization of 2-(alk-2-yn-1-onyl)-1-alkynylbenzenes via a [4 + 2] cycloaddition of benzopyrylium ions: access to structurally unique naphthalenes. Org Biomol Chem 2021; 20:247-251. [PMID: 34904139 DOI: 10.1039/d1ob02229f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report a Ag(I)-promoted homo-dimerization of 2-(alk-2-yn-1-onyl)-1-alkynylbenzenes for the synthesis of structurally novel and functionalized naphthalene derivatives. This transformation exhibits a broad scope for the alkyl as well as aryl groups present on alkynes. Observations made from control experiments suggest the possible mechanism as (i) the homo-dimerization of the in situ generated benzopyrylium ion intermediates through a head-tail [4 + 2] cycloaddition, followed by (ii) the competitive ring-opening vs. decarbonylative aromatization of the adduct to give formylated and deformylated naphthalenes, respectively.
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Affiliation(s)
- Beeraiah Baire
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India.
| | - Jampani Santhi
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India.
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7
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Yasui M, Inoue M, Nakao K, Takeda N, Ueda M. Sc(OTf) 3-Catalyzed Iodocyclization/Ritter-Type Amidation of N-Alkoxypropiolamides: A Synthetic Strategy for Isoxazol-3(2 H)-ones. J Org Chem 2021; 86:15498-15508. [PMID: 34670082 DOI: 10.1021/acs.joc.1c01987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A Sc(OTf)3-catalyzed iodocyclization/Ritter-type amidation of N-alkoxypropiolamides for the synthesis of 4-iodoisoxazol-3(2H)-ones bearing an amide group has been developed. This domino protocol allows the construction of a valuable heterocycle, isoxazol-3(2H)-one, as well as the introduction of two functional groups. The reaction has a broad substrate scope and can be carried out on a large scale. Control experiments suggest that Sc(OTf)3 acts as a dual activator for both the iodocyclization and amidation steps. In addition, the N-alkoxy group in the substrate suppresses some of the side reactions.
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Affiliation(s)
- Motohiro Yasui
- Kobe Pharmaceutical University Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Maki Inoue
- Kobe Pharmaceutical University Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Kotone Nakao
- Kobe Pharmaceutical University Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Norihiko Takeda
- Kobe Pharmaceutical University Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Masafumi Ueda
- Kobe Pharmaceutical University Motoyamakita, Higashinada, Kobe 658-8558, Japan
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8
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Rasras AJ, Shehadi IA, Younes EA, Jaradat DMM, AlQawasmeh RA. An efficient synthesis of furan-3(2 H)-imine scaffold from alkynones. ROYAL SOCIETY OPEN SCIENCE 2021; 8:211145. [PMID: 34849246 PMCID: PMC8611349 DOI: 10.1098/rsos.211145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
A novel efficient method to generate spiro furan-3(2H)-imine derivatives is established by the reaction between the α,β-unsaturated ketones and aniline derivatives. The reaction involves 1,4- addition of aniline followed by the subsequent intramolecular cyclization mediated by tertiary alcohol to produce the furan-3(2H)-imine. All the synthesized compounds are characterized using nuclear magnetic resonance and high-resolution mass spectrometry (HRMS).
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Affiliation(s)
- Anas J. Rasras
- Faculty of Science, Department of Chemistry, Al-Balqa Applied University, PO Box 19117, Al-Salt, Jordan
| | - Ihsan A. Shehadi
- College of Science, Department of Chemistry, University of Sharjah, Pure and Applied Chemistry Research Group, PO Box 27272, Sharjah, United Arab Emirates
| | - Eyad A. Younes
- Department of Chemistry, Faculty of Science, The Hashemite University, PO Box 330127, Zarqa 13133, Jordan
| | - Da'san M. M. Jaradat
- Faculty of Science, Department of Chemistry, Al-Balqa Applied University, PO Box 19117, Al-Salt, Jordan
| | - Raed A. AlQawasmeh
- College of Science, Department of Chemistry, University of Sharjah, Pure and Applied Chemistry Research Group, PO Box 27272, Sharjah, United Arab Emirates
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9
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Ning SS, Meng D, Zhang JY, Liu SL, Zhou NN, Jin X, Zhu HT. Metal-Free Intramolecular [3+2] Cycloaddition of γ-Hydroxy Acetylenic Ketones with Alkynes for the Synthesis of Naphtho[1,2- c]furan-5-ones and Its Derivatization via a Selective C(sp 2)-H Deuteration Reaction. J Org Chem 2021; 86:7347-7358. [PMID: 34032437 DOI: 10.1021/acs.joc.1c00224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A metal-free intramolecular [3+2] cycloaddtion has been achieved by treating benzene-linked propynol-ynes with AcOH/H2O in a one-pot manner. The reaction provides greener, 100% atom-economic, highly regioselective, and more practical access to functionalized naphtho[1,2-c]furan-5-ones with valuable and versatile applications. The regioselective α-deuteration of naphtho[1,2-c]furan-5-ones has been also presented with excellent deuterium incorporation and chemical yields. Moreover, the fluorescent properties of naphtho[1,2-c]furan-5-one products have been investigated in solution.
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Affiliation(s)
- Si-Si Ning
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Dan Meng
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Jie-Yun Zhang
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Shi-Lei Liu
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Ni-Ni Zhou
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Xiaojie Jin
- Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - Hai-Tao Zhu
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
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10
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Tiekink ERT. Supramolecular architectures sustained by delocalised C–I⋯π(arene) interactions in molecular crystals and the propensity of their formation. CrystEngComm 2021. [DOI: 10.1039/d0ce01677b] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A survey of delocalised C–I⋯π(chelate ring) interactions is presented.
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Affiliation(s)
- Edward R. T. Tiekink
- Research Centre for Crystalline Materials
- School of Science and Technology
- Sunway University
- Bandar Sunway
- Malaysia
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11
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Zhang L, Mou NJ, Xiao DR, Zhuang X, Lin XL, Cai T, Luo QL. Regioselective synthesis of fused oxa-heterocycles via iodine-mediated annulation of cyclic 1,3-dicarbonyl compounds with propargylic alcohols. Org Chem Front 2021. [DOI: 10.1039/d0qo01496f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The synthesis of structurally diverse fused oxa-heterocycles is established through the iodine-mediated cascade annulation of cyclic 1,3-dicarbonyl compounds with propargylic alcohols.
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Affiliation(s)
- Liang Zhang
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Neng-Jie Mou
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Dong-Rong Xiao
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Xin Zhuang
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Xiao-Long Lin
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Tian Cai
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
- Key Laboratory of Applied Chemistry of Chongqing Municipality
| | - Qun-Li Luo
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
- Key Laboratory of Applied Chemistry of Chongqing Municipality
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12
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Du LJ, Zhang Y, Zhang HY, Yin G, Wang XY, Zhao J, Han YP. Synthesis of 1,6-Dihydropyridine-3-carbonitrile Derivatives via Lewis Acid-Catalyzed Annulation of Propargylic Alcohols with ( E)-3-Amino-3-phenylacrylonitriles. J Org Chem 2020; 85:9863-9875. [PMID: 32666794 DOI: 10.1021/acs.joc.0c01171] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A novel Lewis acid-catalyzed, highly efficient, practical, and atom-economical protocol for the synthesis of functionalized 1,2-dihydropyridine-3-carbonitrile derivatives in the presence of Bi(OTf)3 (10 mol %) in tetrahydrofuran (2.0 mL) at 80 °C for 8 h in air is described, starting from readily accessed propargylic alcohols and (E)-3-amino-3-phenylacrylonitriles. This cycloaddition protocol, which is scalable and proceeds under mild conditions, is amenable to the gram-scale construction of valuable 1,2-dihydropyridine-3-carbonitriles. Furthermore, the good functional group compatibility and broad scope of this strategy were demonstrated by a broad range of propargylic alcohols and (E)-3-amino-3-phenylacrylonitriles, with yields ranging from 34 to 96%.
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Affiliation(s)
- Li-Juan Du
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Yuecheng Zhang
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Hong-Yu Zhang
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Guohui Yin
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Xiao-Yan Wang
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Jiquan Zhao
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Ya-Ping Han
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
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13
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Wang ZY, Wang KK, Chen R, Liu H, Chen K. Ynones in Reflex-Michael Addition, CuAAC, and Cycloaddition, as Well as their Use as Nucleophilic Enols, Electrophilic Ketones, and Allenic Precursors. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901921] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Zhan-Yong Wang
- College of Chemistry and Chemical Engineering; Xinxiang University; 453000 Xinxiang Henan P. R. of China
| | - Kai-Kai Wang
- College of Chemistry and Chemical Engineering; Xinxiang University; 453000 Xinxiang Henan P. R. of China
| | - Rongxiang Chen
- College of Chemistry and Chemical Engineering; Xinxiang University; 453000 Xinxiang Henan P. R. of China
| | - Huan Liu
- College of Chemistry and Chemical Engineering; Xinxiang University; 453000 Xinxiang Henan P. R. of China
| | - Kaijun Chen
- Department of Chemistry; Lishui University; No. 1, Xueyuan Road 323000 Lishui City Zhejiang Province P. R. China
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14
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Qiu YF, Niu YJ, Song XR, Wei X, Chen H, Li SX, Wang XC, Huo C, Quan ZJ, Liang YM. Iodine promoted cascade cycloisomerization of 1-en-6,11-diynes. Chem Commun (Camb) 2020; 56:1421-1424. [PMID: 31912818 DOI: 10.1039/c9cc08286g] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An iodine promoted cascade cycloisomerization of 1-en-6,11-diynes is presented for the easy preparation of tetrahydrobenzo[f]isoquinolines. This developed reaction system is identified as having good functional-group applicability and can be scaled up to gram quantities. In this transformation, two new cyclic frameworks and one carbonyl group are formed with four new bonds constructed. Additionally, the resulting iodo-substituted compounds could be further derived through simple elimination reactions.
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Affiliation(s)
- Yi-Feng Qiu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, People's Republic of China.
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15
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Khan T, Yaragorla S. Iodocyclization of Propargyl Alcohols: Highly Facile Approach to Hetero/Carbocyclic Iodides. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900474] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Tabassum Khan
- School of Chemistry; University of Hyderabad; P.O.Central Universit; 500046 Gachibowli Hyderabad India
| | - Srinivasarao Yaragorla
- School of Chemistry; University of Hyderabad; P.O.Central Universit; 500046 Gachibowli Hyderabad India
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16
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N-Halo succinimide-promoted one-pot three-component electrophilic cyclization: Facile access to dihalogenated heterocycles under mild conditions. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.09.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Jin DP, Gao P, Chen DQ, Chen S, Wang J, Liu XY, Liang YM. AgSCF3-Mediated Oxidative Trifluoromethythiolation of Alkynes with Dearomatization to Synthesize SCF3-Substituted Spiro[4,5]trienones. Org Lett 2016; 18:3486-9. [PMID: 27355104 DOI: 10.1021/acs.orglett.6b01702] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A new method for the AgSCF3-mediated radical cascade difunctionalizing trifluoromethythiolation of alkynes with dearomatization is developed. This protocol provides a novel route to SCF3-substituted spirocyclic compounds via the formation of one C-SCF3 bond, one C-C bond, and one C-O double bond in a single step.
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Affiliation(s)
- Dong-Po Jin
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
| | - Pin Gao
- Department of Chemistry, School of Science and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University , Xi'an 710049, China
| | - Dao-Qian Chen
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
| | - Si Chen
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
| | - Jia Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
| | - Xue-Yuan Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
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18
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Jung Y, Kim I. Chemoselective reduction of quinols as an alternative to Sonogashira coupling: synthesis of polysubstituted benzofurans. Org Biomol Chem 2016; 14:10454-10472. [DOI: 10.1039/c6ob01941b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
An efficient synthetic approach to polysubstituted benzofurans is described, using 2-methoxyquinone as a benzofuran backbone.
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Affiliation(s)
- Youngeun Jung
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences
- Yonsei University
- Incheon
- Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences
- Yonsei University
- Incheon
- Republic of Korea
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19
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Aggarwal T, Kumar S, Verma AK. Iodine-mediated synthesis of heterocycles via electrophilic cyclization of alkynes. Org Biomol Chem 2016; 14:7639-53. [DOI: 10.1039/c6ob01054g] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Syntheses of heterocyclesvia5-exoor 6-endo-digiodocyclizations from alkynes.
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Affiliation(s)
- Trapti Aggarwal
- Synthetic Organic Chemistry Research Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
| | - Sonu Kumar
- Synthetic Organic Chemistry Research Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
| | - Akhilesh K. Verma
- Synthetic Organic Chemistry Research Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
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20
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Jung Y, Kim I. Synthesis of 6-Aryl-5-iodobenzo[e]pyrido[1,2-a]indoles by 6-endo-digIodocyclization. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500423] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Youngeun Jung
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences; Yonsei University; 85 Songdogwahak-ro, Yeonsu-gu Incheon 21983 Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences; Yonsei University; 85 Songdogwahak-ro, Yeonsu-gu Incheon 21983 Republic of Korea
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21
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Domaradzki ME, Long Y, She Z, Liu X, Zhang G, Chen Y. Gold-Catalyzed Ammonium Acetate Assisted Cascade Cyclization of 2-Alkynylarylketones. J Org Chem 2015; 80:11360-8. [DOI: 10.1021/acs.joc.5b01939] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Maciej E. Domaradzki
- Department of Chemistry and
Biochemistry, Queens College and the Graduate Center of the City University of New York, 65-30 Kissena Boulevard, Flushing, New York 11367, United States
| | - Yuhua Long
- Department of Chemistry and
Biochemistry, Queens College and the Graduate Center of the City University of New York, 65-30 Kissena Boulevard, Flushing, New York 11367, United States
| | - Zhigang She
- Department of Chemistry and
Biochemistry, Queens College and the Graduate Center of the City University of New York, 65-30 Kissena Boulevard, Flushing, New York 11367, United States
| | - Xiaochen Liu
- Department of Chemistry and
Biochemistry, Queens College and the Graduate Center of the City University of New York, 65-30 Kissena Boulevard, Flushing, New York 11367, United States
| | - Gan Zhang
- Department of Chemistry and
Biochemistry, Queens College and the Graduate Center of the City University of New York, 65-30 Kissena Boulevard, Flushing, New York 11367, United States
| | - Yu Chen
- Department of Chemistry and
Biochemistry, Queens College and the Graduate Center of the City University of New York, 65-30 Kissena Boulevard, Flushing, New York 11367, United States
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22
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Hosseini A, Seidel D, Miska A, Schreiner PR. Fluoride-Assisted Activation of Calcium Carbide: A Simple Method for the Ethynylation of Aldehydes and Ketones. Org Lett 2015; 17:2808-11. [DOI: 10.1021/acs.orglett.5b01219] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Abolfazl Hosseini
- Institute
of Organic Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 58, 35392 Giessen, Germany
| | - Daniel Seidel
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Andreas Miska
- Institute
of Inorganic and Analytical Chemistry, Justus-Liebig University, Heinrich-Buff-Ring
58, 35392 Giessen, Germany
| | - Peter R. Schreiner
- Institute
of Organic Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 58, 35392 Giessen, Germany
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23
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Huang H, Zhu X, He G, Liu Q, Fan J, Zhu H. Controlled Synthesis of 1,3,5-Oxadiazin-2-ones and Oxazolones through Regioselective Iodocyclization of Ynamides. Org Lett 2015; 17:2510-3. [DOI: 10.1021/acs.orglett.5b01045] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hai Huang
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Xiaolin Zhu
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Guangke He
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Qi Liu
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Junzhen Fan
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Hongjun Zhu
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
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24
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Qiu Y, Ye Y, Song X, Zhu X, Yang F, Song B, Wang J, Hua H, He Y, Han Y, Liu X, Liang Y. Convenient and Highly Efficient Routes to 2
H
‐Chromene and 4‐Chromanone Derivatives: Iodine‐Promoted and
p
‐Toluenesulfonic Acid Catalyzed Cascade Cyclizations of Propynols. Chemistry 2015; 21:3480-7. [DOI: 10.1002/chem.201406100] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Indexed: 12/18/2022]
Affiliation(s)
- Yi‐Feng Qiu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)
| | - Yu‐Ying Ye
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)
| | - Xian‐Rong Song
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)
| | - Xin‐Yu Zhu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)
| | - Fang Yang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)
| | - Bo Song
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)
| | - Jia Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)
| | - Hui‐Liang Hua
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)
| | - Yu‐Tao He
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)
| | - Ya‐Ping Han
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)
| | - Xue‐Yuan Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)
| | - Yong‐Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)
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