1
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Yaragorla S, Sneha Latha D, Kumar R. Mechanochemical Regioselective [3+3] Annulation of 6-Amino Uracil with Propargyl Alcohols Catalyzed by a Brønsted Acid/Hexafluoroisopropanol. Chemistry 2024:e202401480. [PMID: 38727792 DOI: 10.1002/chem.202401480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Indexed: 06/19/2024]
Abstract
A mechanochemistry approach is developed for regioselective synthesis of functionalized dihydropyrido[2,3-d]pyrimidines by milling propargylic alcohols and 6-aminouracils with HFIP/p-TsOH. In the case of tert-propargyl alcohols, this [3+3] cascade annulation proceeded through allenylation of uracil followed by a 6-endo trig cyclization. With sec-propargyl alcohols, the reaction furnished the propargylation of uracil. This atom economy ball milling reaction allows access to a broad range of dihydropyrido[2,3-d]pyrimidine derivatives in excellent yields. We demonstrated the gram scale synthesis of 3 g and post-synthetic modifications to effect the cyclization of 5 to 6.
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Affiliation(s)
- Srinivasarao Yaragorla
- University of Hyderabad (an Institute of Eminence), P.O. Central University, Gachibowli, 500046, Hyderabad, Telangana State, India
| | - Dandugula Sneha Latha
- University of Hyderabad (an Institute of Eminence), P.O. Central University, Gachibowli, 500046, Hyderabad, Telangana State, India
| | - Rituraj Kumar
- University of Hyderabad (an Institute of Eminence), P.O. Central University, Gachibowli, 500046, Hyderabad, Telangana State, India
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2
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Li G, Luo D, Luo Q, Huang Z, Zhuang W, Luo H, Yang W. Chemoselectivity of the CuAAC/Ring Cleavage/Cyclization Reaction between Enaminones and α-Acylketenimine. J Org Chem 2024; 89:2190-2199. [PMID: 38279922 DOI: 10.1021/acs.joc.3c02095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2024]
Abstract
Ketenimines represent an important class of reactive species, useful synthetic intermediates, and synthons. However, in general, ketenimines preferentially undergoes nucleophilic addition reactions with hydroxyl and amino groups, and carbon functional groups remain a less studied subset of such systems. Herein, we develop a straightforward syntheses of pyridin-4(1H)-imines that is achieved by cyclization of a reacting enaminone unit with α-acylketenimine which is generated from the reactions of sulfonyl azides and terminal ynones in situ (CuAAC/Ring cleavage reaction). The cascade process preferentially starts with the nucleophilic α-C of the enaminone unit instead of an amino group, attacking the electron-deficient central carbon of ketenimine, and the chemoselectivity unconventional products pyridin-4(1H)-imines were formed by intramolecular cyclization.
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Affiliation(s)
- Guanrong Li
- GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Danyang Luo
- GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Qiaoli Luo
- School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang 524048, P. R. China
| | - Zixin Huang
- GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Weimin Zhuang
- GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Hui Luo
- GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Weiguang Yang
- GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
- The Marine Biomedical Research Institute of Guangdong, Zhanjiang, Guangdong 524023, China
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3
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Smile S, Athira M, Harichandran G, Shanmugam P. Synthesis of Blue Emissive Quaternary 9,9-Disubstituted N-Methyl-7-azaindole-Appended (Phenylethynyl)-fluorene Derivatives. ACS OMEGA 2023; 8:17043-17052. [PMID: 37214695 PMCID: PMC10193392 DOI: 10.1021/acsomega.3c01255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/11/2023] [Indexed: 05/24/2023]
Abstract
A highly functionalized 9,9-disubstituted (phenylethynyl)-fluorene-appended N-methyl-7-azaindole derivatives has been synthesized from various fluorene propargylic alcohols and substituted-7-azaindoles using BF3OEt2 as a catalyst. The scope of the reaction was demonstrated by selecting a range of fluorene propargylic alcohols and substituting 7-azaindoles. A plausible reaction mechanism for forming title compounds via propargylic carbocation is postulated. The synthetic transformation of the products has been demonstrated by the Suzuki coupling and Click reaction. The Suzuki coupled compounds 5a-5e were evaluated for photophysical properties such as absorption, solvatochromism, emission, and Stokes shift and found blue emissive in nature.
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Affiliation(s)
- Suresh
Snoxma Smile
- Organic
and Bioorganic Chemistry Division, Council
of Scientific and Industrial Research (CSIR)-Central Leather Research
Institute (CLRI), Adyar, Chennai 600020, India
| | - Mohanakumaran Athira
- Organic
and Bioorganic Chemistry Division, Council
of Scientific and Industrial Research (CSIR)-Central Leather Research
Institute (CLRI), Adyar, Chennai 600020, India
| | - Gurusamy Harichandran
- Department
of Polymer Science, University of Madras, Guindy Campus, Chennai 600025, India
| | - Ponnusamy Shanmugam
- Organic
and Bioorganic Chemistry Division, Council
of Scientific and Industrial Research (CSIR)-Central Leather Research
Institute (CLRI), Adyar, Chennai 600020, India
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4
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Medishetti N, Banda BP, Nanubolu JB, Atmakur K. TPP‐NBS Induced [3+3] Cascade Annulation of Propargylic Alcohols and 1,3‐Bis Nucleophiles: Access to Chromenopyridines, 1,2‐Dihydropyridines**. ChemistrySelect 2023. [DOI: 10.1002/slct.202204964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Nagaraju Medishetti
- Fluoro-Agrochemicals Department CSIR-Indian Institute of Chemical Technology, Tarnaka Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
| | - Bhanu Prasad Banda
- Fluoro-Agrochemicals Department CSIR-Indian Institute of Chemical Technology, Tarnaka Hyderabad 500 007 India
| | - Jagadeesh Babu Nanubolu
- Laboratory of X-ray Crystallography CSIR-Indian Institute of Chemical Technology, Tarnaka Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
| | - Krishnaiah Atmakur
- Fluoro-Agrochemicals Department CSIR-Indian Institute of Chemical Technology, Tarnaka Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
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5
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Mokkarat A, Kruanetr S, Sakee U. Facial preparation of trifluoroacetic acid-immobilized amino-functionalized silica magnetite nano-catalysts as a highly efficient and reusable for synthesis of β-enaminones. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132745] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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6
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Mishra S, Nair SR, Baire B. Recent approaches for the synthesis of pyridines and (iso)quinolines using propargylic Alcohols. Org Biomol Chem 2022; 20:6037-6056. [PMID: 35678139 DOI: 10.1039/d2ob00587e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Propargylic alcohols are one of the readily available and highly explored building blocks in organic synthesis. They show distinct reactivities compared to simple alcohols and/or alkynes, and hence provide diverse possibilities to develop novel synthetic strategies for the construction of polycyclic systems, including heterocycles. The six-membered heterocycles, pyridines, quinolines, and isoquinolines, are very important privileged structures in medicinal chemistry and drug discovery due to their broad spectrum of biological activities. They are also part of vitamins, nucleic acids, pharmaceuticals, antibiotics, dyes, and agrochemicals. Many synthetic strategies have been developed for the rapid and efficient generation of these cyclic systems. One such strategy is employing the propargylic alcohols as reactants in the form of either a 3-carbon component or 2-carbon unit. Thus, in this review article, we aimed to summarize various approaches to pyridines, quinolines, and isoquinolines from propargylic alcohols. To the best of our knowledge, so far, no focused reviews have appeared on this topic in the literature. Due to the many reports available, we also restricted ourselves to the developments during the past 17 years, i.e., 2005-2021. We strongly believe that this review article provides comprehensive coverage of research articles on the title topic, and will be of great value for the organic synthetic community for further developments in this area of research.
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Affiliation(s)
- Surabhi Mishra
- Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India.
| | - Sindoori R Nair
- Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India.
| | - Beeraiah Baire
- Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India.
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7
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Medishetti N, Ittamalla C, Nanubolu JB, Atmakur K. Lewis Acid Zn(OTf)
2
Catalyzed Synthesis ofImidazo[1,2‐
a
]pyridines by [3+2] Annulation of 2‐Amino Pyridines and Propargylic Alcohols. ChemistrySelect 2022. [DOI: 10.1002/slct.202200063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nagaraju Medishetti
- Fluoro & Agrochemicals Department CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
| | - Chaitanya Ittamalla
- Fluoro & Agrochemicals Department CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 007 India
| | - Jagadeesh Babu Nanubolu
- Laboratory of X-ray Crystallography CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
| | - Krishnaiah Atmakur
- Fluoro & Agrochemicals Department CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
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8
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Athira M, Smile SS, Shanmugam P. BF 3·OEt 2 catalyzed synthesis of functionalized 9-fluorene-9-ylidene appended quinazolin-4-ones. NEW J CHEM 2022. [DOI: 10.1039/d1nj05379e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An efficient method for the construction of the quinazolinone skeleton from the reaction of 9-(phenylethynyl)-9H-fluoren-9-ols with substituted 2-aminobenzamides catalyzed by boron trifluoride is achieved.
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Affiliation(s)
- Mohanakumaran Athira
- Organic and Bio-Organic Chemistry Division, CSIR-Central Leather Research Institute (CLRI), Adyar, Chennai – 600020, India
| | - Suresh Snoxma Smile
- Organic and Bio-Organic Chemistry Division, CSIR-Central Leather Research Institute (CLRI), Adyar, Chennai – 600020, India
| | - Ponnusamy Shanmugam
- Organic and Bio-Organic Chemistry Division, CSIR-Central Leather Research Institute (CLRI), Adyar, Chennai – 600020, India
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9
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Zhao X, Ling Q, Cao G, Huo X, Zhao X, Su Y. Research Progress in the Cyclization Reactions with Propargyl Alcohols. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202203037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Yaragorla S, Latha DS, Rajesh P. Calcium‐Catalyzed Intramolecular Hydroamination‐Deacylation Reaction of in situ formed
β
‐Amino Allenes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Srinivasarao Yaragorla
- School of Chemistry University of Hyderabad Prof. C. R. Rao Road, Gachibowli Hyderabad 500046 India
| | - Dandugula Sneha Latha
- School of Chemistry University of Hyderabad Prof. C. R. Rao Road, Gachibowli Hyderabad 500046 India
| | - Pallava Rajesh
- School of Chemistry University of Hyderabad Prof. C. R. Rao Road, Gachibowli Hyderabad 500046 India
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11
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Polychronidou V, Krupp A, Strohmann C, Antonchick AP. Cascade aza-Wittig/6π-Electrocyclization in the Synthesis of 1,6-Dihydropyridines. Org Lett 2021; 23:6024-6029. [PMID: 34291925 PMCID: PMC8397428 DOI: 10.1021/acs.orglett.1c02099] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
A metal-free protocol
for the synthesis of substituted 1,6-dihydropyridines
with quaternary stereogenic centers via a cascade aza-Wittig/6π-electrocyclization
process has been developed. The high functional group compatibility
and broad scope of this method were demonstrated by using a wide range
of easily available vinyliminophosphoranes and ketones, with
yields up to 97%. A modification of the obtained products allowed
for an increase in complexity and chemical diversity. Finally, attempts
for asymmetric synthesis of 1,6-dihydropyridines are demonstrated.
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Affiliation(s)
- Vasiliki Polychronidou
- Max-Planck-Institut für Molekulare Physiologie, Abteilung Chemische Biologie, Otto-Hahn-Straße 11, 44227 Dortmund, Germany.,Technische Universität Dortmund, Fakultät für Chemie und Chemische Biologie, Otto-Hahn- Straße 6, 44227 Dortmund, Germany
| | - Anna Krupp
- Technische Universität Dortmund, Fakultät für Chemie und Chemische Biologie, Otto-Hahn- Straße 6, 44227 Dortmund, Germany
| | - Carsten Strohmann
- Technische Universität Dortmund, Fakultät für Chemie und Chemische Biologie, Otto-Hahn- Straße 6, 44227 Dortmund, Germany
| | - Andrey P Antonchick
- Max-Planck-Institut für Molekulare Physiologie, Abteilung Chemische Biologie, Otto-Hahn-Straße 11, 44227 Dortmund, Germany.,Technische Universität Dortmund, Fakultät für Chemie und Chemische Biologie, Otto-Hahn- Straße 6, 44227 Dortmund, Germany.,Nottingham Trent University, Department of Chemistry and Forensics, Clifton Lane, NG11 8NS Nottingham, United Kingdom
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12
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Ding R, Fu JM, Tian HY, Chen NS, Liu L, Guo Y, Wang PL. Sulfonyl radical-induced regioselective cyclization of 3-aza-1,5-enynes with sulfonyl chlorides to produce 1,2-dihydropyridines by copper catalysis. NEW J CHEM 2021. [DOI: 10.1039/d1nj01821c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A Cu-catalyzed regioselective cyclization of 3-aza-1,5-enynes with sulfonyl chlorides for the synthesis of 1,2-dihydropyridines is described.
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Affiliation(s)
- Ran Ding
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- P. R. China
| | - Jian-Ming Fu
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- P. R. China
| | - Hai-Yu Tian
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- P. R. China
| | - Nian-Shou Chen
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- P. R. China
| | - Lei Liu
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- P. R. China
| | - Yu Guo
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- P. R. China
| | - Pei-Long Wang
- School of Chemistry and Materials Science
- Huaibei Normal University
- Huaibei
- P. R. China
- Information College
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13
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Song X, Yang R, Xiao Q. Recent Advances in the Synthesis of Heterocyclics via Cascade Cyclization of Propargylic Alcohols. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001142] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xian‐Rong Song
- Institute of Organic Chemistry Jiangxi Science & Technology Normal University Key Laboratory of Organic Chemistry Nanchang 330013 People's Republic of China
| | - Ruchun Yang
- Institute of Organic Chemistry Jiangxi Science & Technology Normal University Key Laboratory of Organic Chemistry Nanchang 330013 People's Republic of China
| | - Qiang Xiao
- Institute of Organic Chemistry Jiangxi Science & Technology Normal University Key Laboratory of Organic Chemistry Nanchang 330013 People's Republic of China
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14
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Sun QS, Sun J, Pan LN, Yan CG. Selective Construction of Diverse Polycyclic Spirooxindoles via a Three-Component Reaction of Cyclic Mercapto-Substituted β-Enamino Esters, Isatins, and Cyclic 1,3-Diketones. J Org Chem 2020; 85:12117-12127. [PMID: 32901479 DOI: 10.1021/acs.joc.0c01290] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The three-component reaction of alkyl 2-(benzo[b][1,4]thiazin-3-ylidene)acetates, isatins, and 1,3-indanedione (1,3-cyclopentanedione) in ethanol in the presence of acetic acid conveniently afforded spiro[indeno[1,2-b]phenothiazine-6,3'-indolines] or spiro[cyclopenta[b]phenothiazine-4,3'-indolines] in good yields and with high diastereoselectivity. More interestingly, a similar three-component reaction with 4-hydroxychromen-2-one resulted in the unexpected polycyclic spiro[benzo[b]chromeno[3',4':5,6]pyrano[2,3-e][1,4]thiazine-7,3'-indolines] in satisfactory yields. A plausible reaction mechanism was rationally proposed for formation of different kinds of the spiro compounds, and the stereochemistries of the various spiro compounds were clearly elucidated.
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Affiliation(s)
- Quan-Shun Sun
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Jing Sun
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Liu-Na Pan
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chao-Guo Yan
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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15
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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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16
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Li XS, Han YP, Xu DT, Li M, Wei WX, Liang YM. Silver Trifluoromethanesulfonate-Catalyzed Annulation of Propargylic Alcohols with 3-Methyleneisoindolin-1-one. J Org Chem 2020; 85:2626-2634. [PMID: 31880453 DOI: 10.1021/acs.joc.9b02533] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A silver-catalyzed formal [3 + 3] annulation of 3-methyleneisoindolin-1-one with alkynol for the synthesis of 1,5-dihydroindolizin-3(2H)-one derivatives is disclosed. The protocol allows practical synthesis of N-heterocyclic scaffolds with a broad scope of functional groups and could be efficiently scaled up to gram scale, which incarnates a potential application of this methodology. In addition, a range of chlorine anion substitution of alkenes can be constructed by adjusting the structure of the alkynol substrates with the use of TMSCl.
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Affiliation(s)
- Xue-Song Li
- State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou 730000 , P.R. China
| | - Ya-Ping Han
- School of Chemical Engineering and Technology , Hebei University of Technology , Tianjin 300130 , P.R. China
| | - Dan-Tong Xu
- State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou 730000 , P.R. China
| | - Ming Li
- State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou 730000 , P.R. China
| | - Wan-Xu Wei
- State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou 730000 , P.R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou 730000 , P.R. China
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17
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Song B, Wang M, Xu M, Kong L, Xie H, Wang C, Li Y. Controllable synthesis of pyrido[2,3-b]indol-4-ones or indolo[3,2-b]quinolines via formal intramolecular C(sp 2)-H functionalization. Org Biomol Chem 2019; 17:9960-9965. [PMID: 31730146 DOI: 10.1039/c9ob02108f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel Fe-catalyzed protocol for the controllable synthesis of pyrido[2,3-b]indol-4-ones or indolo[3,2-b]quinolines has been developed by using indole-2-carboxylic derivatives as starting materials. Indole-2-carboxenamines were transformed into pyrido[2,3-b]indol-4-ones through intramolecular N-H/C-H coupling, in which a carbonyl 1,2-migration was involved. Whereas, when indole-2-carboxarylamines were employed, indolo[3,2-b]quinolones were produced through direct N-H/C-H coupling. The desired products were obtained under mild reaction conditions in moderate to good yields with wide substrate scope. The natural product quindolinone was conveniently prepared by this reaction.
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Affiliation(s)
- Bo Song
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.
| | - Mengdan Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.
| | - Murong Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.
| | - Lingkai Kong
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.
| | - Huihui Xie
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.
| | - Chengyu Wang
- School of Chemistry and Chemical Engineering, Linyi University, Shuangling Road, Linyi, Shandong 276000, China
| | - Yanzhong Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.
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18
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Tong P, Sun Z, Wang S, Zhang Y, Li Y. Zn(OTf) 2-Catalyzed Formal [3 + 3] Cascade Annulation of Propargylic Alcohols with 2-Aminochromones: Accessing the Chromeno[2,3- b]pyridines. J Org Chem 2019; 84:13967-13974. [PMID: 31552742 DOI: 10.1021/acs.joc.9b02120] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A Zn(OTf)2-catalyzed formal [3 + 3] cascade annulation strategy for the synthesis of functionalized chromeno[2,3-b]pyridines has been developed using propargylic alcohols and 2-aminochromones as the substrates. The protocol provides a convenient and atom-economical method of accessing a broad range of chromeno[2,3-b]pyridine derivatives in excellent yields with good functional-group tolerance. The method is also effective on the gram scale, which highlights the inherent practicality of this synthetic transformation.
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Affiliation(s)
- Pei Tong
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Zhou Sun
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , People's Republic of China.,Institute for Advanced Interdisciplinary Research , Qilu University of Technology , Daxue Road No. 3501 , Jinan , Shandong 250353 , People's Republic of China
| | - Shutao Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Yuan Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Ying Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , People's Republic of China
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19
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Avadhani A, Iniyavan P, Acharya A, Gautam V, Chakrabarti S, Ila H. Aza-Annulation of 1,2,3,4-Tetrahydro-β-carboline Derived Enaminones and Nitroenamines: Synthesis of Functionalized Indolizino[8,7- b]indoles, Pyrido[1,2- a:3,4- b']diindoles, Indolo[2,3- a]quinolizidine-4-ones and Other Tetrahydro-β-carboline Fused Heterocycles. ACS OMEGA 2019; 4:17910-17922. [PMID: 31681901 PMCID: PMC6822222 DOI: 10.1021/acsomega.9b02957] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 10/02/2019] [Indexed: 06/10/2023]
Abstract
Aza-annulation of novel 1,2,3,4-tetrahydro-β-carboline derived enaminones and nitroenamines with various 1,2- and 1,3-bis electrophiles, such as oxalyl chloride, maleic anhydride, 1,4-benzoquinone, 3-bromopropionyl chloride, itaconic anhydride, and imines (from formaldehyde and primary amines), has been investigated. These methodologies provide simple one-step pathways for efficient construction of highly functionalized tetrahydro-β-carboline 1,2-fused, five- and six-membered heterocyclic frameworks, such as indolizino[8,7-b]indoles, pyrido[1,2-a:3,4-b']diindoles, indolo[2,3-a]quinolizidines, and pyrimido[1',6':1,2]pyrido[3,4-b]indoles, which are core structures of many naturally occurring indole alkaloids with diverse bioactivity.
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Affiliation(s)
- Anusha Avadhani
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore560064, India
| | - Pethaperumal Iniyavan
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore560064, India
| | - Anand Acharya
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore560064, India
| | - Vibha Gautam
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore560064, India
| | | | - Hiriyakkanavar Ila
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore560064, India
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20
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Ren Z, Su L, Cai S, Lu W, Qiao Y, He P, Ding M. Synthesis of Polysubstituted Pyridine Derivatives via Sequential AlCl
3
‐Catalyzed Condensation/Aza‐Wittig/Isomerization Reactions and a Study of their Antifungal Activities. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900291] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zhi‐Lin Ren
- College of Chemical EngineeringHubei University of Arts and Science Xiangyang 441053, Hubei Province P. R. of China
- Key Laboratory of Pesticide & Chemical Biology of Ministry of EducationCentral China Normal University Wuhan 430079 P. R. China
| | - Lei Su
- College of Chemical EngineeringHubei University of Arts and Science Xiangyang 441053, Hubei Province P. R. of China
| | - Shuang Cai
- College of Chemical EngineeringHubei University of Arts and Science Xiangyang 441053, Hubei Province P. R. of China
| | - Wen‐Ting Lu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of EducationCentral China Normal University Wuhan 430079 P. R. China
| | - Yue Qiao
- College of Chemical EngineeringHubei University of Arts and Science Xiangyang 441053, Hubei Province P. R. of China
| | - Ping He
- College of Chemical EngineeringHubei University of Arts and Science Xiangyang 441053, Hubei Province P. R. of China
| | - Ming‐Wu Ding
- Key Laboratory of Pesticide & Chemical Biology of Ministry of EducationCentral China Normal University Wuhan 430079 P. R. China
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21
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Affiliation(s)
- Hongwei Qian
- Department of ChemistryLishui University 1 Xueyuan Road Lishui City Zhejiang Province 323000 People's Republic of China
| | - Dayun Huang
- Department of ChemistryLishui University 1 Xueyuan Road Lishui City Zhejiang Province 323000 People's Republic of China
| | - Yicheng Bi
- Qingdao University of Science & TechnologySifang Campus 53 Zhengzhou Road Qingdao Shandong 266042 People's Republic of China
| | - Guobing Yan
- Department of ChemistryLishui University 1 Xueyuan Road Lishui City Zhejiang Province 323000 People's Republic of China
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22
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Uruvakili A, Kumara Swamy KC. Gold catalysed transformation of 2-arylindoles to terphenyl amines via 3-dienyl indoles and Brønsted acid promoted formation of 2-carboxyindoles to 3-indenylindoles via 3-allenylindoles. Org Biomol Chem 2019; 17:3275-3284. [PMID: 30848275 DOI: 10.1039/c9ob00232d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold-catalysed intramolecular reaction of unprotected/protected 3-dienyl indoles leads to the formation of functionalised terphenylamines with high efficiency; this reaction can also be accomplished in one pot by starting with 2-arylindole and propargylic alcohols. This reaction occurs via 3-dienyl indoles and proceeds likely by gold-catalysed cascade cyclisation, aromatisation and fragmentation of the indole heterocyclic moiety. We have also found that PTSA can work well giving comparable yields, but at least one mole equivalent of PTSA is required. On the other hand, 3-indenylindoles have been synthesised from indole-2-carboxylates (2-carboxyindoles) and propargylic alcohols through Brønsted acid mediation. Many of these indenylindoles exhibit isomerism (probably diastereomers) in the solution state (1H NMR). Two examples of indolo-indenyl acetates have been prepared by reacting the above terphenylanilines with PhI(OAc)2. Key products are characterised by X-ray crystallography.
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Affiliation(s)
- Anasuyamma Uruvakili
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India.
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23
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Li X, Han Y, Zhu X, Xia Y, Wei W, Li M, Liang Y. Lewis Acid‐Catalyzed Annulation of Propargylic Alcohols with (
Z
)‐2‐Styryl‐1
H
‐Indoles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800907] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xue‐Song Li
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Ya‐Ping Han
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Xin‐Yu Zhu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Yu Xia
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Wan‐Xu Wei
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Ming Li
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Yong‐Min Liang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
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24
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Huang W, Zhu C, Li M, Yu Y, Wu W, Tu Z, Jiang H. TBAI or KI-Promoted Oxidative Coupling of Enamines and N
-Tosylhydrazine: An Unconventional Method toward 1,5- and 1,4,5-Substituted 1,2,3-Triazoles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800487] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Wei Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, Guangdong Engineering Research Center for Green Fine Chemicals, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 People's Republic of China
| | - Chuanle Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, Guangdong Engineering Research Center for Green Fine Chemicals, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 People's Republic of China
| | - Minke Li
- Drug Discovery Pipeline & Guangdong Provincial Key Laboratory of Biocomputing; Guangzhou Institutes of Biomedicine and Health; Guangzhou 510530 People's Republic of China
| | - Yue Yu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, Guangdong Engineering Research Center for Green Fine Chemicals, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 People's Republic of China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, Guangdong Engineering Research Center for Green Fine Chemicals, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 People's Republic of China
| | - Zhengchao Tu
- Drug Discovery Pipeline & Guangdong Provincial Key Laboratory of Biocomputing; Guangzhou Institutes of Biomedicine and Health; Guangzhou 510530 People's Republic of China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, Guangdong Engineering Research Center for Green Fine Chemicals, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 People's Republic of China
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25
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Shi X, Chen X, Wang M, Zhang X, Fan X. Regioselective Synthesis of Acylated N-Heterocycles via the Cascade Reactions of Saturated Cyclic Amines with 2-Oxo-2-arylacetic Acids. J Org Chem 2018; 83:6524-6533. [DOI: 10.1021/acs.joc.8b00805] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Xiaonan Shi
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xi Chen
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Muhua Wang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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26
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Han Y, Li X, Li M, Zhu X, Liang Y. Lewis Acid‐Catalyzed Formal [3+3] Annulation of Propargylic Alcohols with 4‐Hydroxy‐2
H
‐chromen‐2‐ones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800131] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ya‐Ping Han
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Xue‐Song Li
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Ming Li
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Xin‐Yu Zhu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Yong‐Min Liang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
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27
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Sun QS, Sun J, Jiang W, Yan CG. Annulation reaction of methyl 2-(benzo[ b ][1,4]thiazin-3-ylidene)acetate with β -nitrostyrenes and 3-nitrochromenes. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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28
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Scapin E, Salbego PRS, Bender CR, Meyer AR, Pagliari AB, Orlando T, Zimmer GC, Frizzo CP, Bonacorso HG, Zanatta N, Martins MAP. Synthesis, effect of substituents on the regiochemistry and equilibrium studies of tetrazolo[1,5- a]pyrimidine/2-azidopyrimidines. Beilstein J Org Chem 2017; 13:2396-2407. [PMID: 29181120 PMCID: PMC5687014 DOI: 10.3762/bjoc.13.237] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 10/05/2017] [Indexed: 12/02/2022] Open
Abstract
An efficient synthesis methodology for a series of tetrazolo[1,5-a]pyrimidines substituted at the 5- and 7-positions from the cyclocondensation reaction [CCC + NCN] was developed. The NCN corresponds to 5-aminotetrazole and CCC to β-enaminone. Two distinct products were observed in accordance with the β-enaminone substituent. When observed in solution, the compounds can be divided into two groups: (a) precursor compounds with R = CF3 or CCl3, which leads to tetrazolo[1,5-a]pyrimidines in high regioselectivity with R at the 7-position of the heterocyclic ring; and (b) precursor compounds with R = aryl or methyl, which leads to a mixture of compounds, tetrazolo[1,5-a] pyrimidines (R in the 5-position of the ring) and 2-azidopyrimidines (R in the 4-position of the ring), which was attributed to an equilibrium of azide–tetrazole. In the solid state, all compounds were found as 2-azidopyrimidines. The regiochemistry of the reaction and the stability of the products are discussed on the basis of the data obtained by density functional theory (DFT) for energetic and molecular orbital (MO) calculations.
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Affiliation(s)
- Elisandra Scapin
- Laboratório de Química, Universidade Federal do Tocantins, Palmas, TO 77001-090, Brazil
| | - Paulo R S Salbego
- Núcleo de Química de Heterociclos (NUQUIMHE), Department of Chemistry, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - Caroline R Bender
- Núcleo de Química de Heterociclos (NUQUIMHE), Department of Chemistry, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - Alexandre R Meyer
- Núcleo de Química de Heterociclos (NUQUIMHE), Department of Chemistry, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - Anderson B Pagliari
- Núcleo de Química de Heterociclos (NUQUIMHE), Department of Chemistry, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - Tainára Orlando
- Núcleo de Química de Heterociclos (NUQUIMHE), Department of Chemistry, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - Geórgia C Zimmer
- Núcleo de Química de Heterociclos (NUQUIMHE), Department of Chemistry, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - Clarissa P Frizzo
- Núcleo de Química de Heterociclos (NUQUIMHE), Department of Chemistry, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - Helio G Bonacorso
- Núcleo de Química de Heterociclos (NUQUIMHE), Department of Chemistry, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - Nilo Zanatta
- Núcleo de Química de Heterociclos (NUQUIMHE), Department of Chemistry, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - Marcos A P Martins
- Núcleo de Química de Heterociclos (NUQUIMHE), Department of Chemistry, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
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29
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Li XS, Han YP, Zhu XY, Li M, Wei WX, Liang YM. Synthesis of Organophosphorus Compounds through Copper-Catalyzed Annulation Involving C–O and C–P Bond Formations. J Org Chem 2017; 82:11636-11643. [DOI: 10.1021/acs.joc.7b01947] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xue-Song Li
- 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
| | - Xin-Yu Zhu
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Ming Li
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Wan-Xu Wei
- 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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30
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Sun L, Liu P, Wang J, Lu P, Wang Y. Preparation of Spiro[indene-1,1′-isoindolin]-3′-ones via Sulfuric Acid-Promoted Cascade Cyclization. J Org Chem 2017; 82:8407-8418. [DOI: 10.1021/acs.joc.7b00958] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Lang Sun
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Peng Liu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Jing Wang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Ping Lu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yanguang Wang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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31
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Han Y, Li X, Sun Z, Zhu X, Li M, Song X, Liang Y. Lewis Acid‐Catalyzed [4+2] Annulation between Propargylic Alcohols with Benzo[
d
]isoxazoles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700495] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ya‐Ping Han
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 People's Republic of China
| | - Xue‐Song Li
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 People's Republic of China
| | - Zhou Sun
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 People's Republic of China
| | - Xin‐Yu Zhu
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 People's Republic of China
| | - Ming Li
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 People's Republic of China
| | - Xian‐Rong Song
- Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science Technology Normal University Nanchang 330013 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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32
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Activity of immobilized metallic phthalocyanines in the multicomponent synthesis of dihydropyridine derivatives and their subsequent aromatization. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.03.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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33
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Xiao M, Yan C. Molecular Diversity of Three-Component Reaction ofβ-Enamino Imide, Malononitrile and Cyclicα-Diketones. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201700142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Man Xiao
- College of Chemistry & Chemical Engineering; Yangzhou University; Yangzhou Jiangsu 225002 China
| | - Chaoguo Yan
- College of Chemistry & Chemical Engineering; Yangzhou University; Yangzhou Jiangsu 225002 China
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34
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Xie YB, Ye SP, Chen WF, Hu YL, Li DJ, Wang L. Brønsted-Acid-Catalyzed Multicomponent One-Pot Reaction: Efficient Synthesis of Polysubstituted 1,2-Dihydropyridines. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700127] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yi-Bi Xie
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials; College of Materials and Chemical Engineering; China Three Gorges University; Yichang Hubei 443002 China
| | - Si-Pei Ye
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials; College of Materials and Chemical Engineering; China Three Gorges University; Yichang Hubei 443002 China
| | - Wei-Feng Chen
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials; College of Materials and Chemical Engineering; China Three Gorges University; Yichang Hubei 443002 China
| | - Yu-Lin Hu
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials; College of Materials and Chemical Engineering; China Three Gorges University; Yichang Hubei 443002 China
| | - De-Jiang Li
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials; College of Materials and Chemical Engineering; China Three Gorges University; Yichang Hubei 443002 China
| | - Long Wang
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials; College of Materials and Chemical Engineering; China Three Gorges University; Yichang Hubei 443002 China
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35
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Xiao M, Jiang YH, Yan CG. Construction of Spiro[indeno[2,1-e]pyrrolo[3,4-b]pyridine-10,3′-indoline] and Indeno[1,2-b]pyrrolo[3,4-e]pyridine via Three-Component Reaction. ChemistrySelect 2017. [DOI: 10.1002/slct.201602042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Man Xiao
- College of Chemistry & Chemical Engineering; Yangzhou University; Yangzhou 225002 China
| | - Yan-Hong Jiang
- College of Chemistry & Chemical Engineering; Yangzhou University; Yangzhou 225002 China
| | - Chao-Guo Yan
- College of Chemistry & Chemical Engineering; Yangzhou University; Yangzhou 225002 China
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36
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Zhu X, Hong G, Hu C, Wu S, Wang L. Scandium(III) Trifluoromethanesulfonate Catalyzed Selective Reactions of Donor-Acceptor Cyclopropanes with 1,1-Diphenylethanols: An Approach to Polysubstituted Olefins. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700221] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaoyan Zhu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; 130 Meilong Road 200237 Shanghai P. R. China
| | - Gang Hong
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; 130 Meilong Road 200237 Shanghai P. R. China
| | - Chen Hu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; 130 Meilong Road 200237 Shanghai P. R. China
| | - Shengying Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; 130 Meilong Road 200237 Shanghai P. R. China
| | - Limin Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; 130 Meilong Road 200237 Shanghai P. R. China
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37
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Zhang XB, Hu ZY, Zhou GE, Wang S. Theoretical Insights into the Synthesis of 2,3-Dihydropyridines from Unsaturated Oximes by Rh III-Catalyzed C-H Activation - A DFT Study. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Xiang-Biao Zhang
- School of Chemical Engineering; Anhui University of Science and Technology; 232001 Huainan People's Republic of China
| | - Zhen-Yuan Hu
- School of Chemical Engineering; Anhui University of Science and Technology; 232001 Huainan People's Republic of China
| | - Gui-E Zhou
- School of Chemical Engineering; Anhui University of Science and Technology; 232001 Huainan People's Republic of China
| | - Song Wang
- Institute of Theoretical Chemistry; Jilin University; 130023 Changchun People's Republic of China
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38
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Zhang Y, Sun J, Shen GL, Yan CG. Selective synthesis of tetrahydroimidazo[1,2-a]pyridine and pyrrolidine derivatives via a one-pot two-step reaction. Org Biomol Chem 2017; 15:8072-8077. [DOI: 10.1039/c7ob01860f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In the presence of triethylamine, the addition reaction of substituted α-amino acid alkyl esters with dialkyl but-2-ynedioate afforded active β-enamino esters, which in turn reacted with aromatic aldehydes and malononitrile to give tetrahydroimidazo[1,2-a]pyridine derivatives in moderate yields.
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Affiliation(s)
- Yu Zhang
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Jing Sun
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Guo-Liang Shen
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Chao-Guo Yan
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
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39
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Jiang H, Huang W, Yu Y, Yi S, Li J, Wu W. Transition-metal-free synthesis of β-trifluoromethylated enamines with trifluoromethanesulfinate. Chem Commun (Camb) 2017. [DOI: 10.1039/c7cc03125d] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Direct olefinic C–H trifluoromethylation of enamines is developed under transition metal-free conditions by using Langlois' reagent (NaSO2CF3).
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Affiliation(s)
- Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Wei Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Yue Yu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Songjian Yi
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Jiawei Li
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
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40
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Li Y, Cao X, Liu Y, Wan JP. Regioselective three-component synthesis of 2,3-disubstituted quinolines via the enaminone modified Povarov reaction. Org Biomol Chem 2017; 15:9585-9589. [DOI: 10.1039/c7ob02411h] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The enaminone modified three-component Povarov reactions enable the regioselective synthesis of 2,3-disubstituted quinolines.
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Affiliation(s)
- Yi Li
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P.R. China
| | - Xiaoji Cao
- Research Center of Analysis and Measurement
- Zhejiang University of Technology
- Hangzhou
- P. R. China
| | - Yunyun 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
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41
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Jiang Y, Yan C. Selective Synthesis of 1,2-Diarylpyrrolo[3,4-b]pyridine-5,7-diones via Cyclization Reaction ofβ-Enamino Imides with Cinnamaldehydes. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201600504] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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42
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Yang WJ, Zhang J, Sun J, Yan CG. Convenient Construction of Indanedione-Fused 2,5-Dihydropyridines, 4,5-Dihydropyridines, and Spirooxindolines. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600981] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wen-Juan Yang
- College of Chemistry & Chemical Engineering; Yangzhou University; 225002 Yangzhou China
| | - Jing Zhang
- College of Chemistry & Chemical Engineering; Yangzhou University; 225002 Yangzhou China
| | - Jing Sun
- College of Chemistry & Chemical Engineering; Yangzhou University; 225002 Yangzhou China
| | - Chao-Guo Yan
- College of Chemistry & Chemical Engineering; Yangzhou University; 225002 Yangzhou China
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43
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Zhang F, Qin Z, Kong L, Zhao Y, Liu Y, Li Y. Metal/Benzoyl Peroxide (BPO)-Controlled Chemoselective Cycloisomerization of (o-Alkynyl)phenyl Enaminones: Synthesis of α-Naphthylamines and Indeno[1,2-c]pyrrolones. Org Lett 2016; 18:5150-5153. [DOI: 10.1021/acs.orglett.6b02615] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Fangfang Zhang
- Shanghai Key Laboratory of
Green Chemistry and Chemical Processes, School of Chemistry and Molecular
Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Zhengchen Qin
- Shanghai Key Laboratory of
Green Chemistry and Chemical Processes, School of Chemistry and Molecular
Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Lingkai Kong
- Shanghai Key Laboratory of
Green Chemistry and Chemical Processes, School of Chemistry and Molecular
Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Yulei Zhao
- Shanghai Key Laboratory of
Green Chemistry and Chemical Processes, School of Chemistry and Molecular
Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Yuanyuan Liu
- Shanghai Key Laboratory of
Green Chemistry and Chemical Processes, School of Chemistry and Molecular
Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Yanzhong Li
- Shanghai Key Laboratory of
Green Chemistry and Chemical Processes, School of Chemistry and Molecular
Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
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44
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Yugandar S, Konda S, Ila H. Amine Directed Pd(II)-Catalyzed C–H Activation-Intramolecular Amination of N-Het(aryl)/Acyl Enaminonitriles and Enaminones: An Approach towards Multisubstituted Indoles and Heterofused Pyrroles. J Org Chem 2016; 81:2035-52. [DOI: 10.1021/acs.joc.5b02902] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Somaraju Yugandar
- New Chemistry Unit, Jawaharlal Nehru Centre
for Advanced Scientific Research, Jakkur, Bangalore-560064, India
| | - Saidulu Konda
- New Chemistry Unit, Jawaharlal Nehru Centre
for Advanced Scientific Research, Jakkur, Bangalore-560064, India
| | - Hiriyakkanavar Ila
- New Chemistry Unit, Jawaharlal Nehru Centre
for Advanced Scientific Research, Jakkur, Bangalore-560064, India
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45
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Zhao Y, Duan Q, Zhou Y, Yao Q, Li Y. Gold-catalyzed chemo- and diastereoselective C(sp(2))-H functionalization of enaminones for the synthesis of pyrrolo[3,4-c]-quinolin-1-one derivatives. Org Biomol Chem 2016; 14:2177-81. [PMID: 26788797 DOI: 10.1039/c5ob02556g] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
An efficient tandem Au(i)/TsOH-catalyzed reaction of enaminones with diazo compounds for the synthesis of pyrroloquinolinone derivatives under mild reaction conditions has been developed. This methodology was realized by relay actions of Au and TsOH in a one-pot multistep manner. Initially, the Au-catalyzed reaction of enaminones with diazo compounds affords chemo- and diastereoselective C(sp(2))-H functionalized products, which then undergo subsequent intramolecular cyclization/rearrangement to give pyrroloquinolinone derivatives under the catalysis of TsOH.
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Affiliation(s)
- Yulei Zhao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
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46
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Shen J, Xue L, Lin X, Cheng G, Cui X. The base-promoted synthesis of multisubstituted benzo[b][1,4]oxazepines. Chem Commun (Camb) 2016; 52:3292-5. [DOI: 10.1039/c5cc09877g] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A variety of substituted benzo[b][1,4]oxazepines have been prepared via base-promoted intramolecular O-arylation from N-(2-haloaryl)enaminones under metal-free conditions.
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Affiliation(s)
- Jinhai Shen
- Key Laboratory of Xiamen Marine and Gene Drugs
- Institutes of Molecular Medicine and School of Biomedical Sciences
- Huaqiao University & Engineering Research Center of Molecular Medicine
- Ministry of Education
- Xiamen 361021
| | - Lulu Xue
- Key Laboratory of Xiamen Marine and Gene Drugs
- Institutes of Molecular Medicine and School of Biomedical Sciences
- Huaqiao University & Engineering Research Center of Molecular Medicine
- Ministry of Education
- Xiamen 361021
| | - Xing Lin
- Key Laboratory of Xiamen Marine and Gene Drugs
- Institutes of Molecular Medicine and School of Biomedical Sciences
- Huaqiao University & Engineering Research Center of Molecular Medicine
- Ministry of Education
- Xiamen 361021
| | - Guolin Cheng
- Key Laboratory of Xiamen Marine and Gene Drugs
- Institutes of Molecular Medicine and School of Biomedical Sciences
- Huaqiao University & Engineering Research Center of Molecular Medicine
- Ministry of Education
- Xiamen 361021
| | - Xiuling Cui
- Key Laboratory of Xiamen Marine and Gene Drugs
- Institutes of Molecular Medicine and School of Biomedical Sciences
- Huaqiao University & Engineering Research Center of Molecular Medicine
- Ministry of Education
- Xiamen 361021
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47
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Kong L, Shao Y, Li Y, Liu Y, Li Y. LDA-Promoted Synthesis of 3-Amino Furans by Selective Lithiation of Enaminones. J Org Chem 2015; 80:12641-5. [DOI: 10.1021/acs.joc.5b02211] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lingkai Kong
- Shanghai Key Laboratory of
Green Chemistry and Chemical Processes, School of Chemistry and Molecular
Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yushang Shao
- Shanghai Key Laboratory of
Green Chemistry and Chemical Processes, School of Chemistry and Molecular
Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yanli Li
- Shanghai Key Laboratory of
Green Chemistry and Chemical Processes, School of Chemistry and Molecular
Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yuanyuan Liu
- Shanghai Key Laboratory of
Green Chemistry and Chemical Processes, School of Chemistry and Molecular
Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yanzhong Li
- Shanghai Key Laboratory of
Green Chemistry and Chemical Processes, School of Chemistry and Molecular
Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
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48
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Zhao Y, Zhang F, Yao W, Wang C, Liu Y, Li Y. Base-Promoted Approach to Highly Functionalized Conjugated Dienes through Enamine Migration. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501060] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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49
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Liu YW, Xie YB, Li DJ, Wang L. Efficient iron-catalyzed synthesis of polysubstituted 1,2-dihydropyridine derivatives. RUSS J GEN CHEM+ 2015. [DOI: 10.1134/s1070363215090212] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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50
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Cao S, Xin L, Liu Y, Wan JP, Wen C. Regioselective three-component reactions of enaminones, 2-aminopyridines and enals for the synthesis of 1,2-dihydropyridines. RSC Adv 2015. [DOI: 10.1039/c5ra01901j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel regioselective, metal-free and broadly applicable three-component approach for the synthesis of 1,2-dihydropyridines has been established.
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Affiliation(s)
- Shuo Cao
- Key Laboratory of Functional Small Organic Molecules
- Ministry of Education
- and College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
| | - Luoting Xin
- Key Laboratory of Functional Small Organic Molecules
- Ministry of Education
- and College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
| | - Yunyun Liu
- Key Laboratory of Functional Small Organic Molecules
- Ministry of Education
- and College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
| | - Jie-Ping Wan
- Key Laboratory of Functional Small Organic Molecules
- Ministry of Education
- and College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
| | - Chengping Wen
- College of Basic Medical Sciences
- Zhejiang Chinese Medical University
- Hangzhou
- P R China
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