1
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Silva TRC, Souza VV, Raminelli C. Synthesis of Isoquinolines via the [4+2] Cycloaddition Reaction of Oxazoles and Arynes. ChemistrySelect 2022. [DOI: 10.1002/slct.202203039] [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]
Affiliation(s)
- Tamiris R. C. Silva
- Instituto de Ciências Ambientais Químicas e Farmacêuticas Universidade Federal de São Paulo Rua Prof. Artur Riedel, 275 Diadema SP 09972-270 Brazil
| | - Vinícius V. Souza
- Instituto de Ciências Ambientais Químicas e Farmacêuticas Universidade Federal de São Paulo Rua Prof. Artur Riedel, 275 Diadema SP 09972-270 Brazil
| | - Cristiano Raminelli
- Instituto de Ciências Ambientais Químicas e Farmacêuticas Universidade Federal de São Paulo Rua Prof. Artur Riedel, 275 Diadema SP 09972-270 Brazil
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2
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Affiliation(s)
- Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
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3
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Darweesh AF, Salama SK, Abdelhamid IA, Elwahy AHM. Bis(aldehydes): Versatile precursors for novel
bis
(
14
H
‐dibenzo[
a
,
j
]xanthenes),
bis
(pyrano[3,2‐
c
:5,6‐
c
']dichromenedione), and
bis
(dihydrobenzo[
a
]xanthenones)
via
multicomponent reactions. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ahmed F. Darweesh
- Chemistry Department, Faculty of Science Cairo University Giza Egypt
| | - Soad K. Salama
- Chemistry Department, Faculty of Science Cairo University Giza Egypt
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4
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Castillo JC, Castro Agudelo B, Gálvez J, Carissan Y, Rodriguez J, Coquerel Y. Periselectivity in the aza-Diels-Alder Cycloaddition between α-Oxoketenes and N-(5-Pyrazolyl)imines: A Combined Experimental and Theoretical Study. J Org Chem 2020; 85:7368-7377. [PMID: 32396353 DOI: 10.1021/acs.joc.0c00767] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The thermal 6π aza-Diels-Alder cycloadditions between α-oxoketenes, in situ derived from a thermally induced Wolff rearrangement of 2-diazo-1,3-diketones, and N-(5-pyrazolyl)imines as prototypical electron-rich 2-azadienes lead to two distinct sets of products, essentially as a function of the nature of the α-oxoketenes involved. For instance, cyclic five-membered α-oxoketenes lead preferentially to spiro hydropyridin-4-ones, which involves the α-oxoketenes as the 2π partners at their C═C double bond and the N-(5-pyrazolyl)imines as the 4π partners at their 2-azadiene moiety. In contrast, other cyclic and acyclic α-oxoketenes lead preferentially to 1,3-oxazin-4-ones, which now involves the α-oxoketenes as the 4π partners at their 1-oxadiene moiety and the N-(5-pyrazolyl)imines as the 2π partners at their C═N double bond. A computational modeling study using DFT methods allowed rationalizing this change of periselectivity: the formation of spiro hydropyridin-4-ones is under thermodynamic control while the formation of 1,3-oxazin-4-ones is kinetically controlled, and slightly thermodynamically disfavored in the five-membered ring series. The competing cyclodimerization of the α-oxoketenes is also studied in detail.
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Affiliation(s)
- Juan-Carlos Castillo
- Escuela de Ciencias Quı́micas, Universidad Pedagógica y Tecnológica de Colombia, Tunja 150003, Colombia
| | | | - Jaime Gálvez
- Grupo de Investigación en Desarrollo de Materiales y Productos (GIDEMP), Centro Nacional de Asistencia Técnica a la Industria, SENA, Cali, Colombia
| | - Yannick Carissan
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Jean Rodriguez
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Yoann Coquerel
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
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5
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Castillo JC, Tigreros A, Coquerel Y, Rodríguez J, Macías MA, Portilla J. Synthesis of Pyrrolo[2,3- c]isoquinolines via the Cycloaddition of Benzyne with Arylideneaminopyrroles: Photophysical and Crystallographic Study. ACS OMEGA 2019; 4:17326-17339. [PMID: 31656906 PMCID: PMC6811864 DOI: 10.1021/acsomega.9b02043] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 09/19/2019] [Indexed: 06/10/2023]
Abstract
An efficient and quick access toward a series of (E)-2-arylideneaminopyrroles 6 and to their benzyne-promoted aza-Diels-Alder cycloaddition products is provided. These products are three pyrrolo[2,3-c]isoquinolines 8a-c substituted in position 5 with different electron-acceptor (A) or electron-donor (D) aryl groups. Intermediates and products were obtained in good yields (up to 78 and 84%, respectively), and their structures were determined on the basis of NMR measurements and HRMS analysis. Photophysical properties of 8a-c were investigated, finding good Stokes shift in different solvents, but only the product 8c showed appreciable fluorescence intensity since its 5-aryl group (2,4-Cl2Ph) could favor the twisted intramolecular charge transfer effect. In addition, a riveting relationship between solvent viscosity and fluorescence intensity was found. Structures of 6 and 8 were studied and confirmed by single-crystal X-ray diffraction, observing that their electronic distributions effect the supramolecular assembly but with only long-distance hydrophobic interactions. A CE-B3LYP model was used to study the energetic topology and understand the crystal architecture of compounds as well as find a connection with both the synthetic and photophysical results.
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Affiliation(s)
- Juan-Carlos Castillo
- Bioorganic
Compounds Research Group, Department of Chemistry, Universidad de los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
- Escuela
de Ciencias Química, Universidad
Pedagógica y Tecnológica de Colombia, Tunja 150003, Colombia
| | - Alexis Tigreros
- Bioorganic
Compounds Research Group, Department of Chemistry, Universidad de los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Yoann Coquerel
- Aix
Marseille Université, CNRS, Centrale Marseille, ISM2, Marseille 13288, France
| | - Jean Rodríguez
- Aix
Marseille Université, CNRS, Centrale Marseille, ISM2, Marseille 13288, France
| | - Mario A. Macías
- Department
of Chemistry, Universidad de los Andes, Carrera 1 No. 18A-12, Bogotá 111711, Colombia
| | - Jaime Portilla
- Bioorganic
Compounds Research Group, Department of Chemistry, Universidad de los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
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6
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Wang W, Wan H, Du G, Dai B, He L. Synthesis of Benzo[b]fluoranthenes and Spiroacridines from Fluorene-Derived Alkenes and N-Arylimines via a Tandem Reaction with Benzynes. Org Lett 2019; 21:3496-3500. [DOI: 10.1021/acs.orglett.9b00659] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Weihua Wang
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
| | - Hongwei Wan
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
| | - Guangfen Du
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
| | - Bin Dai
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
| | - Lin He
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
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7
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Addepalli Y, Yu Z, Ji J, Zou C, Wang Z, He Y. Tandem Diels-Alder/oxidation-aromatization reactions involving 2-styrylchromones and arynes. Org Biomol Chem 2018; 16:6077-6085. [PMID: 30091440 DOI: 10.1039/c8ob01199k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition-metal-free Diels-Alder and tandem Diels-Alder/oxidation-aromatization reactions of 2-styrylchromones with arynes have been demonstrated under mild reaction conditions with a wide range of substrates. The tandem process afforded functionalized benzo[c]xanthone derivatives in moderate to good yields. This efficient protocol allows rapid access to either dihydrobenzo[c]xanthone and benzo[c]xanthone derivatives selectively by simply changing the atmosphere of the reaction.
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Affiliation(s)
- Yesu Addepalli
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China.
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8
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Li SJ, Wang Y, Xu JK, Xie D, Tian SK, Yu ZX. Formal Insertion of Imines (or Nitrogen Heteroarenes) and Arynes into the C–Cl Bond of Carbon Tetrachloride. Org Lett 2018; 20:4545-4548. [DOI: 10.1021/acs.orglett.8b01845] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sheng-Jun Li
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yi Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Jing-Kun Xu
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Dong Xie
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shi-Kai Tian
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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9
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Wang Y, Yu ZX. Intra- versus Intermolecular Carbon-to-Carbon Proton Transfers in the Reactions of Arynes with Nitrogen Nucleophiles: A DFT Study. J Org Chem 2018; 83:5384-5391. [PMID: 29652140 DOI: 10.1021/acs.joc.7b03109] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Carbon-to-carbon proton transfer (PT) is an elementary reaction in organic chemistry. Herein we report a systematic DFT study on the carbon-to-carbon proton transfers in the reactions of arynes with nitrogen nucleophiles, including tertiary amines, aziridines, imines, and N-heteroarenes. DFT calculations indicated that the Gibbs energies of activation for the 1,4- and 1,5-proton transfers involved are lower than 20 kcal/mol in most cases. We also found that the Bell-Evans-Polanyi principle applies to the 1,4-proton transfers, indicating that the more exergonic an intramolecular proton transfer is (the more stable a carbanion is generated), the faster it will be. Previous experimental studies have shown that, in the presence of a carbon nucleophile (NuH; e.g., CHCl3 and MeCN) as the third component (also as the solvent), intermolecular proton abstractions may compete with the intramolecular proton transfers and lead to different products. Our theoretical rationalization of these competitions is that the introduction of an electron-withdrawing group at the acidic site can accelerate the intramolecular proton transfer dramatically (owing to the generation of a more stable carbanion), making it compete with the intermolecular processes. In addition, we have also discussed the competition between intra- and intermolecular proton transfers when NuH is used as the reactant rather than the solvent.
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Affiliation(s)
- Yi Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry , Peking University , Beijing 100871 , China
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry , Peking University , Beijing 100871 , China
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10
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Elejalde N, Macías M, Castillo J, Sortino M, Svetaz L, Zacchino S, Portilla J. Synthesis and
in vitro
Antifungal Evaluation of Novel
N
‐Substituted 4‐Aryl‐2‐methylimidazoles. ChemistrySelect 2018. [DOI: 10.1002/slct.201801238] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Nerith‐Rocio Elejalde
- Departamento de QuímicaUniversidad de los Andes Carrera 1 N° 18 A-12, Bogotá Colombia
| | - Mario Macías
- Departamento de QuímicaUniversidad de los Andes Carrera 1 N° 18 A-12, Bogotá Colombia
| | - Juan‐Carlos Castillo
- Departamento de QuímicaUniversidad de los Andes Carrera 1 N° 18 A-12, Bogotá Colombia
| | - Maximiliano Sortino
- Pharmacognosy AreaFaculty of Biochemical and Pharmaceutical Sciences.Universidad Nacional de Rosario Suipacha 531 2000-Rosario Argentina
| | - Laura Svetaz
- Pharmacognosy AreaFaculty of Biochemical and Pharmaceutical Sciences.Universidad Nacional de Rosario Suipacha 531 2000-Rosario Argentina
| | - Susana Zacchino
- Pharmacognosy AreaFaculty of Biochemical and Pharmaceutical Sciences.Universidad Nacional de Rosario Suipacha 531 2000-Rosario Argentina
| | - Jaime Portilla
- Departamento de QuímicaUniversidad de los Andes Carrera 1 N° 18 A-12, Bogotá Colombia
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11
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Saher L, Makhloufi-Chebli M, Dermeche L, Dermeche S, Boutemeur-Khedis B, Rabia C, Hamdi M, Silva AM. 10-(4-Hydroxy-6-methyl-2-oxo-2 H -pyran-3-yl)-3-methyl-1 H ,10 H -pyrano[4,3- b ] chromen-1-ones from a pseudo-multicomponent reaction and evaluation of their antioxidant activity. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Tan J, Liu B, Su S. Aryne triggered dearomatization reaction of isoquinolines and quinolines with chloroform. Org Chem Front 2018. [DOI: 10.1039/c8qo00838h] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The direct dearomatization reaction of isoquinolines and quinolines with chloroform has been accomplished through in situ electrophilic aryne activation and nucleophile formation.
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Affiliation(s)
- Jiajing Tan
- Department of Organic Chemistry
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Binbin Liu
- Department of Organic Chemistry
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Shuaisong Su
- Department of Organic Chemistry
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
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13
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Yoshida H, Kuriki H, Fujii S, Ito Y, Osaka I, Takaki K. Aryne-Imine-Aryne Coupling Reaction via [4+2] Cycloaddition between Aza-o
-Quinone Methides and Arynes. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700251] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Hiroto Yoshida
- Department of Applied Chemistry, Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Hitoshi Kuriki
- Department of Applied Chemistry, Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Shori Fujii
- Department of Applied Chemistry, Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Yu Ito
- Department of Applied Chemistry, Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Itaru Osaka
- Department of Applied Chemistry, Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Ken Takaki
- Department of Applied Chemistry, Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
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14
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Zhao Y, Jin J, Boyle JW, Lee BR, Day DP, Susanti D, Clarkson GJ, Chan PWH. Silver-Catalyzed 1,3-Acyloxy Migration/Diels–Alder Reaction of 1,9-Dien-4-yne Esters to Partially Hydrogenated Isoquinolines. J Org Chem 2017; 82:2826-2834. [DOI: 10.1021/acs.joc.7b00048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yichao Zhao
- School
of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Jianwen Jin
- School
of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | | | - Bo Ra Lee
- School
of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - David Philip Day
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Dewi Susanti
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Guy James Clarkson
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Philip Wai Hong Chan
- School
of Chemistry, Monash University, Clayton, Victoria 3800, Australia
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
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15
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Kiran INC, Reddy RS, Lagishetti C, Xu H, Wang Z, He Y. Selective Aza Diels–Alder and Domino [4+2]/[2+2] Cycloaddition Reactions of Arynes with N-Sulfonyl Ketimines. J Org Chem 2017; 82:1823-1832. [DOI: 10.1021/acs.joc.6b02667] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- I. N. Chaithanya Kiran
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Rd., Shapingba, Chongqing 401331, P.R. China
| | - R. Santhosh Reddy
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Rd., Shapingba, Chongqing 401331, P.R. China
| | - Chandraiah Lagishetti
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Rd., Shapingba, Chongqing 401331, P.R. China
| | - Huacheng Xu
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Rd., Shapingba, Chongqing 401331, P.R. China
| | - Zhen Wang
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Rd., Shapingba, Chongqing 401331, P.R. China
| | - Yun He
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Rd., Shapingba, Chongqing 401331, P.R. China
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16
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Xu JK, Li SJ, Wang HY, Xu WC, Tian SK. Three-component carboarylation of unactivated imines with arynes and carbon nucleophiles. Chem Commun (Camb) 2017; 53:1708-1711. [DOI: 10.1039/c6cc09311f] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With 2-(trimethylsilyl)aryl triflates as aryne precursors, the title reaction proceeds smoothly to afford functionalized tertiary amines under transition metal-free conditions.
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Affiliation(s)
- Jing-Kun Xu
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Sheng-Jun Li
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Hai-Yang Wang
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Wen-Cong Xu
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Shi-Kai Tian
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
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17
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Reddy RS, Lagishetti C, Chen S, Kiran INC, He Y. Synthesis of Dihydrophenanthridines and Oxoimidazolidines from Anilines and Ethylglyoxylate via Aza Diels–Alder Reaction of Arynes and KF-Induced Annulation. Org Lett 2016; 18:4546-9. [DOI: 10.1021/acs.orglett.6b02186] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- R. Santhosh Reddy
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P. R. China
| | - Chandraiah Lagishetti
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P. R. China
| | - Shuo Chen
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P. R. China
| | - I. N. Chaithanya Kiran
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P. R. China
| | - Yun He
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P. R. China
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18
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Jagadishbabu N, Shivashankar K. Pseudo Multicomponent Reaction: Synthesis of Fused Pyrano Biscoumarin Analogs from 1,2-diols. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2742] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Narasashetty Jagadishbabu
- P. G. Department of Chemistry, Central College Campus; Bangalore University; Bangalore 560 001 Karnataka India
| | - Kalegowda Shivashankar
- P. G. Department of Chemistry, Central College Campus; Bangalore University; Bangalore 560 001 Karnataka India
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19
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Abstract
Arynes are important and versatile intermediates in a variety of transformations. Commonly used solvents for aryne chemistry include acetonitrile and dichloromethane. Although rarely reported, the reactive nature of aryne intermediates makes them prone to side reactions, which sometimes involve solvent participation. Acetonitrile and dichloromethane are not always innocent solvents and can participate in aryne-based reactions. These results are presented in the context of ongoing mechanistic investigations of the triple aryne-tetrazine reaction.
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Affiliation(s)
- Sung-Eun Suh
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - David M Chenoweth
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
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20
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Wang L, Guan ZR, Ding MW. One-pot synthesis of 1H-isochromenes and 1,2-dihydroisoquinolines by a sequential isocyanide-based multicomponent/Wittig reaction. Org Biomol Chem 2016; 14:2413-20. [PMID: 26810599 DOI: 10.1039/c5ob02405f] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A one-pot synthesis of 1H-isochromenes and 1,2-dihydroisoquinolines by a I-MCR/Wittig sequence was developed. The reaction of phosphonium salt , an acid, an amine (or without), and an isocyanide gave the 1H-isochromenes or 1,2-dihydroisoquinolines in good yields by a sequential Passerini or Ugi condensation and an intramolecular Wittig reaction in the presence of K2CO3.
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Affiliation(s)
- Long Wang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Central China Normal University, Wuhan 430079, P. R. China. and College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, P. R. China
| | - Zhi-Rong Guan
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Central China Normal University, Wuhan 430079, P. R. China.
| | - Ming-Wu Ding
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Central China Normal University, Wuhan 430079, P. R. China.
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21
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Abstract
The synthesis of biaryls from benzyne intermediates offers an alternative strategy to conventional metal-catalyzed cross-coupling approaches.
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22
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Fathimath Salfeena CT, Ashitha KT, Sasidhar BS. BF3·Et2O mediated one-step synthesis of N-substituted-1,2-dihydropyridines, indenopyridines and 5,6-dihydroisoquinolines. Org Biomol Chem 2016; 14:10165-10169. [DOI: 10.1039/c6ob02133f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and efficient one-pot ring annulation provides quick access to N-substituted-1,2-dihydropyridines, indenopyridines and 5,6-dihydroisoquinolines.
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Affiliation(s)
- C. T. Fathimath Salfeena
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- Chemical Sciences and Technology Division
| | - K. T. Ashitha
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- Chemical Sciences and Technology Division
| | - B. S. Sasidhar
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- Chemical Sciences and Technology Division
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