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Suseelan Sarala A, Bhowmick S, Carvalho RL, Al‐Thabaiti SA, Mokhtar M, Silva Júnior EN, Maiti D. Transition‐Metal‐Catalyzed Selective Alkynylation of C−H Bonds. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100992] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Anjana Suseelan Sarala
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai India
- Department of Chemistry Saarland University 66123 Saarbrucken Germany
| | - Suman Bhowmick
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai India
| | - Renato L. Carvalho
- Department of Chemistry Federal University of Minas Gerais 31270-901 Belo Horizonte MG Brazil
| | | | - Mohamed Mokhtar
- Chemistry Department Faculty of Science King Abdulaziz University 21589 Jeddah Saudi Arabia
| | | | - Debabrata Maiti
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai India
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2
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Chen S, Ranjan P, Voskressensky LG, Van der Eycken EV, Sharma UK. Recent Developments in Transition-Metal Catalyzed Direct C-H Alkenylation, Alkylation, and Alkynylation of Azoles. Molecules 2020; 25:molecules25214970. [PMID: 33121108 PMCID: PMC7662665 DOI: 10.3390/molecules25214970] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 10/23/2020] [Accepted: 10/24/2020] [Indexed: 12/17/2022] Open
Abstract
The transition metal-catalyzed C–H bond functionalization of azoles has emerged as one of the most important strategies to decorate these biologically important scaffolds. Despite significant progress in the C–H functionalization of various heteroarenes, the regioselective alkylation and alkenylation of azoles are still arduous transformations in many cases. This review covers recent advances in the direct C–H alkenylation, alkylation and alkynylation of azoles utilizing transition metal-catalysis. Moreover, the limitations of different strategies, chemoselectivity and regioselectivity issues will be discussed in this review.
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Affiliation(s)
- Su Chen
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001 Leuven, Belgium; (S.C.); (P.R.)
| | - Prabhat Ranjan
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001 Leuven, Belgium; (S.C.); (P.R.)
| | - Leonid G. Voskressensky
- Organic Chemistry Department, Science Faculty, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya street 6, RU-117198 Moscow, Russia;
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001 Leuven, Belgium; (S.C.); (P.R.)
- Organic Chemistry Department, Science Faculty, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya street 6, RU-117198 Moscow, Russia;
- Correspondence: (E.V.V.d.E.); (U.K.S.)
| | - Upendra K. Sharma
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001 Leuven, Belgium; (S.C.); (P.R.)
- Correspondence: (E.V.V.d.E.); (U.K.S.)
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3
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Cao M, Teng QH, Xi ZW, Liu LQ, Gu RY, Wang YC. Facile synthesis of 2-alkynyl oxazoles via a Ce(OTf) 3-catalyzed cascade reaction of alkynyl carboxylic acids with tert-butyl isocyanide. Org Biomol Chem 2020; 18:655-659. [PMID: 31930236 DOI: 10.1039/c9ob02337b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We developed an efficient and novel protocol to synthesize 2-alkynyl oxazoles from tert-butyl isocyanide and alkynyl carboxylic acids. This method allowed the synthesis of diversely functionalized oxazoles under mild reaction conditions, coupled with operational simplicity and these functionalized oxazoles showed a certain degree of biological activity. Moreover, compounds 2b, 2h, 2k, 2n, 2p and 2t exhibited good anticancer activities in human gastric cancer cells (MGC803) and human bladder tumor cells (T24), with IC50 below 20.0 μM.
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Affiliation(s)
- Ming Cao
- National Demonstration Center for Experimental Chemistry Education, Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, P. R. China.
| | - Qing-Hu Teng
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Zhi-Wei Xi
- National Demonstration Center for Experimental Chemistry Education, Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, P. R. China.
| | - Li-Qiu Liu
- National Demonstration Center for Experimental Chemistry Education, Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, P. R. China.
| | - Ren-Yong Gu
- National Demonstration Center for Experimental Chemistry Education, Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, P. R. China.
| | - Ying-Chun Wang
- National Demonstration Center for Experimental Chemistry Education, Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, P. R. China.
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4
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Shaw R, Elagamy A, Althagafi I, Pratap R. Synthesis of alkynes from non-alkyne sources. Org Biomol Chem 2020; 18:3797-3817. [DOI: 10.1039/d0ob00325e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review contains a compilation of the literature for the synthesis of alkynes from non-alkyne sources.
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Affiliation(s)
- Ranjay Shaw
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
| | - Amr Elagamy
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
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5
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Karaoğlu HP, Atsay A, Nar I, McKee V, Koçak MB, Hamuryudan E, Gül A. Near-infrared absorbing π-extended hexadeca substituted phthalocyanines. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.07.086] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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6
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Hofer M, de Haro T, Gómez-Bengoa E, Genoux A, Nevado C. Oxidant speciation and anionic ligand effects in the gold-catalyzed oxidative coupling of arenes and alkynes. Chem Sci 2019; 10:8411-8420. [PMID: 31803420 PMCID: PMC6844217 DOI: 10.1039/c9sc02372k] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 07/09/2019] [Indexed: 11/23/2022] Open
Abstract
The mechanism of the gold-catalyzed oxidative cross-coupling of arenes and alkynes has been studied in detail combining stoichiometric experiments with putative reaction intermediates and DFT calculations. Our data suggest that ligand exchange between the alkyne, the Au(i)-catalyst and the hypervalent iodine reagent is responsible for the formation of both an Au(i)-acetylide complex and a more reactive "non-symmetric" I(iii) oxidant responsible for the crucial Au(i)/Au(iii) turnover. Further, the reactivity of the in situ generated Au(iii)-acetylide complex is governed by the nature of the anionic ligands transferred by the I(iii) oxidant: while halogen ligands remain unreactive, acetato ligands are efficiently displaced by the arene to yield the observed Csp2-Csp cross-coupling products through an irreversible reductive elimination step. Finally, the nature of competitive processes and catalyst deactivation pathways has also been unraveled. This detailed investigation provides insights not only on the specific features of the species involved in oxidative gold-catalyzed cross couplings but also highlights the importance of both ancillary and anionic ligands in the reactivity of the key Au(iii) intermediates.
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Affiliation(s)
- Manuel Hofer
- Department of Chemistry , University of Zürich , Winterthurerstrasse 190 , Zürich , CH-8057 , Switzerland .
| | - Teresa de Haro
- Department of Chemistry , University of Zürich , Winterthurerstrasse 190 , Zürich , CH-8057 , Switzerland .
| | - Enrique Gómez-Bengoa
- Departamento de Química Orgánica I , Universidad del Pais Vasco , Apdo 1072 , CP-20080 Donostia-San Sebastián , Spain
| | - Alexandre Genoux
- Department of Chemistry , University of Zürich , Winterthurerstrasse 190 , Zürich , CH-8057 , Switzerland .
| | - Cristina Nevado
- Department of Chemistry , University of Zürich , Winterthurerstrasse 190 , Zürich , CH-8057 , Switzerland .
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7
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Qi D, Dong W, Peng Z, Zhang Y, An D. Mukaiyama reagent-promoted metal-free preparation of alkynyl sulfones and phosphonates under mild conditions. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.06.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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8
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Thorve PR, Guru MM, Maji B. Manganese-Catalyzed Divergent Markovnikov Addition and [2+2+2] Cycloaddition of 2-Carbonyl Indanone with Terminal Alkyne. J Org Chem 2019; 84:8185-8193. [PMID: 31149821 DOI: 10.1021/acs.joc.9b01173] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Herein, we report on manganese-catalyzed regioselective Markovnikov addition and [2+2+2] cycloaddition of 2-carbonyl indanones with terminal alkynes. This method provides an efficient approach for the construction of all-carbon quaternary centers and complex polycyclic hydrocarbon frameworks by the formation of new carbon-carbon single bonds in a regio- and stereoselective manner. Preliminary mechanistic experiments involving deuterium labeling, kinetic, catalytic, and stoichiometric reactions with plausible intermediates were performed to shed light on the reaction mechanism.
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Affiliation(s)
- Pradip Ramdas Thorve
- Department of Chemical Sciences , Indian Institute of Science Education and Research Kolkata , Mohanpur 741246 , India
| | - Murali Mohan Guru
- Department of Chemical Sciences , Indian Institute of Science Education and Research Kolkata , Mohanpur 741246 , India
| | - Biplab Maji
- Department of Chemical Sciences , Indian Institute of Science Education and Research Kolkata , Mohanpur 741246 , India
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9
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Gandeepan P, Müller T, Zell D, Cera G, Warratz S, Ackermann L. 3d Transition Metals for C-H Activation. Chem Rev 2018; 119:2192-2452. [PMID: 30480438 DOI: 10.1021/acs.chemrev.8b00507] [Citation(s) in RCA: 1425] [Impact Index Per Article: 237.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
C-H activation has surfaced as an increasingly powerful tool for molecular sciences, with notable applications to material sciences, crop protection, drug discovery, and pharmaceutical industries, among others. Despite major advances, the vast majority of these C-H functionalizations required precious 4d or 5d transition metal catalysts. Given the cost-effective and sustainable nature of earth-abundant first row transition metals, the development of less toxic, inexpensive 3d metal catalysts for C-H activation has gained considerable recent momentum as a significantly more environmentally-benign and economically-attractive alternative. Herein, we provide a comprehensive overview on first row transition metal catalysts for C-H activation until summer 2018.
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Affiliation(s)
- Parthasarathy Gandeepan
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Thomas Müller
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Daniel Zell
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Gianpiero Cera
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Svenja Warratz
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
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10
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Knutson PC, Fredericks HE, Ferreira EM. Synthesis of 1,3-Diynes via Cadiot-Chodkiewicz Coupling of Volatile, in Situ Generated Bromoalkynes. Org Lett 2018; 20:6845-6849. [PMID: 30336061 PMCID: PMC6217962 DOI: 10.1021/acs.orglett.8b02975] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A convenient Cadiot-Chodkiewicz protocol that facilitates the use of low molecular weight alkyne coupling partners is described. The method entails an in situ elimination from a dibromoolefin precursor and immediate subjection to copper-catalyzed conditions, circumventing the hazards of volatile brominated alkynes. The scope of this method is described, and the internal 1,3-diyne products are preliminarily evaluated in ruthenium-catalyzed azide-alkyne cycloadditions.
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Affiliation(s)
- Phil C. Knutson
- Department of Chemistry, University of Georgia, Athens, Georgia 30602,
United States
| | | | - Eric M. Ferreira
- Department of Chemistry, University of Georgia, Athens, Georgia 30602,
United States
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11
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Patel UN, Punji B. A Copper- and Phosphine-Free Nickel(II)-Catalyzed Method for C−H Bond Alkynylation of Benzothiazoles and Related Azoles. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800243] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Ulhas N. Patel
- Organometallic Synthesis and Catalysis Group; Chemical Engineering Division; CSIR-National Chemical Laboratory (CSIR-NCL); Dr. Homi Bhabha Road Pune- 411 008 Maharashtra India
| | - Benudhar Punji
- Organometallic Synthesis and Catalysis Group; Chemical Engineering Division; CSIR-National Chemical Laboratory (CSIR-NCL); Dr. Homi Bhabha Road Pune- 411 008 Maharashtra India
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12
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Shi Y, Li MS, Zhang F, Chen B. Nickel(ii)-catalyzed tandem C(sp2)–H bond activation and annulation of arenes with gem-dibromoalkenes. RSC Adv 2018; 8:28668-28675. [PMID: 35558433 PMCID: PMC9092601 DOI: 10.1039/c8ra03278e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 07/25/2018] [Indexed: 12/19/2022] Open
Abstract
A nickel(ii)/silver(i)-catalyzed tandem C(sp2)–H activation and intramolecular annulation of arenes with dibromoalkenes has been successfully achieved, which offers an efficient approach to the 3-methyleneisoindolin-1-one scaffold. Attractive features of this system include its low cost, ease of operation, and its ability to access a wide range of isoindolinones. A nickel(ii)/silver(i)-catalyzed tandem C(sp2)–H activation and intramolecular annulation of arenes with dibromoalkenes has been successfully achieved, which offers an efficient approach to the 3-methyleneisoindolin-1-one scaffold.![]()
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Affiliation(s)
- Yun Shi
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Lanzhou 730000
- P. R. China
| | - Meng-Sheng Li
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Lanzhou 730000
- P. R. China
| | - Fangdong Zhang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Lanzhou 730000
- P. R. China
| | - Baohua Chen
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Lanzhou 730000
- P. R. China
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13
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Joo SR, Kim JS, Kim SH. Direct preparation of arylethynylzinc bromides and their application to cross-coupling reactions. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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14
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Sayyad M, Wani IA, Tiwari DP, Ghorai MK. Synthetic Routes to Isomeric Imidazoindoles by Regioselective Ring‐Opening of Activated Aziridines Followed by Copper‐Catalysed C–N Cyclization. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700267] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Masthanvali Sayyad
- Department of Chemistry Indian Institute of Technology Kanpur 208016 Kanpur Uttar Pradesh India
| | - Imtiyaz Ahmad Wani
- Department of Chemistry Indian Institute of Technology Kanpur 208016 Kanpur Uttar Pradesh India
| | - Deo Prakash Tiwari
- Department of Chemistry Indian Institute of Technology Kanpur 208016 Kanpur Uttar Pradesh India
| | - Manas K. Ghorai
- Department of Chemistry Indian Institute of Technology Kanpur 208016 Kanpur Uttar Pradesh India
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15
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Webber R, Peglow TJ, Nobre PC, Barcellos AM, Roehrs JA, Schumacher RF, Perin G. 1,1-Dibromoalkenes as versatile reagents to a transition metal-free and stereoselective synthesis of ( E )-1-bromo-1-selenoalkenes and ketene selenoacetals. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.07.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Liu W, Sun Y, Zhao H, Li B, Chen S. Ytterbium(III) Trifluoromethanesulfonate Catalyzed Ring-Opening C(sp3
)−N Bond Formation of Benzoxazoles with Propargylic Alcohols. ChemCatChem 2016. [DOI: 10.1002/cctc.201600606] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wenfei Liu
- Inner Mongolia Key Laboratory of Fine Organic Synthesis; Department of Chemistry and Chemical Engineering; Inner Mongolia University; Hohhot 010021 P. R. China
| | - Yongqing Sun
- Inner Mongolia Key Laboratory of Fine Organic Synthesis; Department of Chemistry and Chemical Engineering; Inner Mongolia University; Hohhot 010021 P. R. China
| | - Haiying Zhao
- Inner Mongolia Key Laboratory of Fine Organic Synthesis; Department of Chemistry and Chemical Engineering; Inner Mongolia University; Hohhot 010021 P. R. China
| | - Baoguo Li
- Inner Mongolia Key Laboratory of Fine Organic Synthesis; Department of Chemistry and Chemical Engineering; Inner Mongolia University; Hohhot 010021 P. R. China
| | - Shufeng Chen
- Inner Mongolia Key Laboratory of Fine Organic Synthesis; Department of Chemistry and Chemical Engineering; Inner Mongolia University; Hohhot 010021 P. R. China
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17
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Aziz J, Baladi T, Piguel S. Direct Alkynylation of 3H-Imidazo[4,5-b]pyridines Using gem-Dibromoalkenes as Alkynes Source. J Org Chem 2016; 81:4122-33. [DOI: 10.1021/acs.joc.6b00406] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jessy Aziz
- Institut
Curie, PSL Research University, CNRS, INSERM, UMR9187-U1196, F-91405, Orsay, France
| | - Tom Baladi
- Institut
Curie, PSL Research University, CNRS, INSERM, UMR9187-U1196, F-91405, Orsay, France
| | - Sandrine Piguel
- Institut
Curie, Université Paris Sud, Université Paris-Saclay, F-91405, Orsay, France
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18
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Baladi T, Granzhan A, Piguel S. Microwave-Assisted C-2 Direct Alkenylation of Imidazo[4,5-b]pyridines: Access to Fluorescent Purine Isosteres with Remarkably Large Stokes Shifts. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600166] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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19
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Rousée K, Schneider C, Bouillon JP, Levacher V, Hoarau C, Couve-Bonnaire S, Pannecoucke X. Copper-catalyzed direct C–H fluoroalkenylation of heteroarenes. Org Biomol Chem 2016; 14:353-7. [DOI: 10.1039/c5ob02213d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Efficient copper-catalyzed direct C–H fluoroalkenylation of heterocycles using various gem-bromofluoroalkenes as electrophiles is reported for the first time.
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Affiliation(s)
- Kevin Rousée
- Normandie Univ
- COBRA
- UMR 6014 & FR 3038
- Univ Rouen
- INSA Rouen
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20
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Zhang Y, Zhang Y, Xiao J, Peng Z, Dong W, An D. Base-Induced One-Pot Preparation of N- or P-Substituted Alkynes. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501092] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Kremer A, Aurisicchio C, De Leo F, Ventura B, Wouters J, Armaroli N, Barbieri A, Bonifazi D. Walking Down the Chalcogenic Group of the Periodic Table: From Singlet to Triplet Organic Emitters. Chemistry 2015; 21:15377-87. [PMID: 26471446 DOI: 10.1002/chem.201501260] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 07/16/2015] [Indexed: 01/22/2023]
Affiliation(s)
- Adrian Kremer
- Namur Research College (NARC) and Department of Chemistry, University of Namur (UNamur), Rue de Bruxelles 61, 5000 Namur (Belgium)
| | - Claudia Aurisicchio
- Namur Research College (NARC) and Department of Chemistry, University of Namur (UNamur), Rue de Bruxelles 61, 5000 Namur (Belgium)
| | - Federica De Leo
- Namur Research College (NARC) and Department of Chemistry, University of Namur (UNamur), Rue de Bruxelles 61, 5000 Namur (Belgium)
| | - Barbara Ventura
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche (CNR), Via Gobetti 101, 40129 Bologna (Italy)
| | - Johan Wouters
- Namur Research College (NARC) and Department of Chemistry, University of Namur (UNamur), Rue de Bruxelles 61, 5000 Namur (Belgium)
| | - Nicola Armaroli
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche (CNR), Via Gobetti 101, 40129 Bologna (Italy)
| | - Andrea Barbieri
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche (CNR), Via Gobetti 101, 40129 Bologna (Italy).
| | - Davide Bonifazi
- Namur Research College (NARC) and Department of Chemistry, University of Namur (UNamur), Rue de Bruxelles 61, 5000 Namur (Belgium).
- Department of Chemical and Pharmaceutical Sciences and INSTM UdR Trieste, University of Trieste, Piazzale Europa 1, 34127 Trieste (Italy).
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22
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Abstract
Silver is a less expensive noble metal. Superior alkynophilicity due to π-coordination with the carbon-carbon triple bond makes silver salts ideal catalysts for alkyne-based organic reactions. This review highlights the progress in alkyne chemistry via silver catalysis primarily over the past five years (ca. 2010-2014). The discussion is developed in terms of the bond type formed with the acetylenic carbon (i.e., C-C, C-N, C-O, C-Halo, C-P and C-B). Compared with other coinage metals such as Au and Cu, silver catalysis is frequently observed to be unique. This critical review clearly indicates that silver catalysis provides a significant impetus to the rapid evolution of alkyne-based organic reactions, such as alkynylation, hydrofunctionalization, cycloaddition, cycloisomerization, and cascade reactions.
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Affiliation(s)
- Guichun Fang
- Department of Chemistry, Northeast Normal University, Changchun 130024, China.
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23
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Brachet E, Belmont P. Palladium-Catalyzed Regioselective Alkynylation of Pyrroles and Azoles under Mild Conditions: Application to the Synthesis of a Dopamine D-4 Receptor Agonist. J Org Chem 2015; 80:7519-29. [DOI: 10.1021/acs.joc.5b01093] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Etienne Brachet
- Université Paris Descartes, Faculté de Pharmacie
de Paris, UMR CNRS 8638 (COMETE), 4 avenue de l’Observatoire, Paris FR-75006, France
- Université Sorbonne Paris Cité (USPC), 12 rue de l’école de Médecine, Paris FR-75006, France
| | - Philippe Belmont
- Université Paris Descartes, Faculté de Pharmacie
de Paris, UMR CNRS 8638 (COMETE), 4 avenue de l’Observatoire, Paris FR-75006, France
- Université Sorbonne Paris Cité (USPC), 12 rue de l’école de Médecine, Paris FR-75006, France
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24
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Srivastava A, Aggarwal L, Jain N. One-pot sequential alkynylation and cycloaddition: regioselective construction and biological evaluation of novel benzoxazole-triazole derivatives. ACS COMBINATORIAL SCIENCE 2015; 17:39-48. [PMID: 25396730 DOI: 10.1021/co500135z] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Individually, benzoxazole and triazole moieties are of significant biological interest owing to their importance in drugs and pharmaceuticals. To assess their combined biological impact when woven into one molecule, we designed a novel, regioselective, multicomponent, one-pot (MCOP) approach for the construction of benzoxazole-linked triazoles. The synthesis has been achieved in two sequential steps involving copper-catalyzed alkynylation of benzoxazole followed by a 1,3-dipolar cycloaddition reaction. By combination of these two bioactive units into one core, a series of new benzoxazole-triazole scaffolds has been synthesized and subjected to in vitro antibacterial and anticancer evaluation. Tests against clinical isolates of Staphylococcus aureus and Escherichia coli showed potent Gram-negative activity for compounds 4{1,1,1}, 4{1,1,4}, and 4{1,2,1}. The cytotoxicity of the synthesized library was determined against three cancer cell lines: HeLa, SKBr3, and Hep G2. Compound 4{2,2,2} showed significant cytotoxicity against all the cell lines. These preliminary bioassay evaluations strongly suggest the promise and scope of these novel molecules as therapeutic agents in medical science.
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Affiliation(s)
- Ananya Srivastava
- Department of Chemistry, Indian Institute of Technology, New Delhi-110016, India
| | - Leena Aggarwal
- Department of Chemistry, Indian Institute of Technology, New Delhi-110016, India
| | - Nidhi Jain
- Department of Chemistry, Indian Institute of Technology, New Delhi-110016, India
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25
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Zhang X, Lin Y, Zhang J, Cao S. Base-mediated direct fluoroalkenylation of 2-phenyl-1,3,4-oxadiazole, benzothiazole and benzoxazole with gem-difluoroalkenes. RSC Adv 2015. [DOI: 10.1039/c4ra13761b] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Direct α-fluorovinylation of 2-phenyl-1,3,4-oxadiazole, benzothiazole and benzoxazole with gem-difluoroalkenes under the assistance of KHMDS or NaH at room temperature was developed.
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Affiliation(s)
- Xuxue Zhang
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- China
| | - Yingyin Lin
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- China
| | - Juan Zhang
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- China
| | - Song Cao
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- China
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26
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Zhang J, Shao J, Xue J, Wang Y, Li Y. One pot hydroamination/[4 + 3] cycloaddition: synthesis towards the cyclohepta[b]indole core of silicine and ervatamine. RSC Adv 2014. [DOI: 10.1039/c4ra13249a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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27
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Yeh MCP, Lin HH, Kuo SF, Chen PJ, Hong JW. Convenient Synthesis of (E)-5-Aryl(halo)methylenebicyclo- [2.2.2]oct-2-enes and -[2.2.1]hept-2-enesviaLewis Acid- Promoted Carbohalogenation of Cyclic 2,6-Enynols. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400671] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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28
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Wang X, Sun K, Lv Y, Ma F, Li G, Li D, Zhu Z, Jiang Y, Zhao F. Regioselective CH Imidation of Five-Membered Heterocyclic Compounds through a Metal Catalytic or Organocatalytic Approach. Chem Asian J 2014; 9:3413-6. [DOI: 10.1002/asia.201403052] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Indexed: 10/24/2022]
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29
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Theunissen C, Evano G. Room-Temperature Direct Alkynylation of Arenes with Copper Acetylides. Org Lett 2014; 16:4488-91. [DOI: 10.1021/ol502030y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Cédric Theunissen
- Laboratoire
de Chimie Organique,
Service de Chimie et PhysicoChimie Organiques, Université Libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Gwilherm Evano
- Laboratoire
de Chimie Organique,
Service de Chimie et PhysicoChimie Organiques, Université Libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
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30
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Miura M, Satoh T, Hirano K. Development of Direct Aromatic Coupling Reactions by Transition-Metal Catalysis. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20140099] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Masahiro Miura
- Department of Applied Chemistry, Faculty of Engineering, Osaka University
| | - Tetsuya Satoh
- Department of Applied Chemistry, Faculty of Engineering, Osaka University
| | - Koji Hirano
- Department of Applied Chemistry, Faculty of Engineering, Osaka University
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31
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Liu J, Zhang X, Shi L, Liu M, Yue Y, Li F, Zhuo K. Base-promoted synthesis of coumarins from salicylaldehydes and aryl-substituted 1,1-dibromo-1-alkenes under transition-metal-free conditions. Chem Commun (Camb) 2014; 50:9887-90. [DOI: 10.1039/c4cc04377d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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32
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Xu Y, Zhang Q, He T, Meng F, Loh T. Palladium‐Catalyzed Direct Alkynylation of
N
‐Vinylacetamides. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400171] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yun‐He Xu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, People's Republic of China, Fax: (+86)‐551‐6360‐3531; phone: (+86)‐551‐6360‐3531
| | - Qiu‐Chi Zhang
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, People's Republic of China, Fax: (+86)‐551‐6360‐3531; phone: (+86)‐551‐6360‐3531
| | - Tao He
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, People's Republic of China, Fax: (+86)‐551‐6360‐3531; phone: (+86)‐551‐6360‐3531
| | - Fei‐Fan Meng
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, People's Republic of China, Fax: (+86)‐551‐6360‐3531; phone: (+86)‐551‐6360‐3531
| | - Teck‐Peng Loh
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, People's Republic of China, Fax: (+86)‐551‐6360‐3531; phone: (+86)‐551‐6360‐3531
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
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33
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Bliman D, Pettersson M, Bood M, Grøtli M. 8-Bromination of 2,6,9-trisubstituted purines with pyridinium tribromide. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.03.084] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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34
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Xie F, Qi Z, Yu S, Li X. Rh(III)- and Ir(III)-Catalyzed C–H Alkynylation of Arenes under Chelation Assistance. J Am Chem Soc 2014; 136:4780-7. [DOI: 10.1021/ja501910e] [Citation(s) in RCA: 367] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Fang Xie
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Zisong Qi
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Songjie Yu
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xingwei Li
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
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35
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Liu W, Yu X, Kuang C. Palladium-Catalyzed C-2 Selective Olefination of Thiazoles. Org Lett 2014; 16:1798-801. [DOI: 10.1021/ol500542j] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Wei Liu
- Department of Chemistry, Tongji University, Siping Road
1239, Shanghai 200092, P. R. China and Key Laboratory
of Yangtze River Water Environment, Ministry of Education, Siping Road 1239, Shanghai 200092, P. R. China
| | - Xin Yu
- Department of Chemistry, Tongji University, Siping Road
1239, Shanghai 200092, P. R. China and Key Laboratory
of Yangtze River Water Environment, Ministry of Education, Siping Road 1239, Shanghai 200092, P. R. China
| | - Chunxiang Kuang
- Department of Chemistry, Tongji University, Siping Road
1239, Shanghai 200092, P. R. China and Key Laboratory
of Yangtze River Water Environment, Ministry of Education, Siping Road 1239, Shanghai 200092, P. R. China
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36
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Yempala T, Sridevi JP, Yogeeswari P, Sriram D, Kantevari S. Rational design and synthesis of novel dibenzo[b,d]furan-1,2,3-triazole conjugates as potent inhibitors of Mycobacterium tuberculosis. Eur J Med Chem 2014; 71:160-7. [DOI: 10.1016/j.ejmech.2013.10.082] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Revised: 10/10/2013] [Accepted: 10/31/2013] [Indexed: 11/30/2022]
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37
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Kim J, Kang D, Yoo EJ, Lee PH. Palladium-Catalyzed Decarboxylative C-H Alkynylation of Benzoxazoles with α,β-Ynoic Acids. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301441] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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38
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Ohmura T, Kijima A, Komori Y, Suginome M. Cycloaddition-based formal C-H alkynylation of isoindoles leading to the synthesis of air-stable fluorescent 1,3-dialkynylisoindoles. Org Lett 2013; 15:3510-3. [PMID: 23829477 DOI: 10.1021/ol401051d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Reaction of N-alkylisoindoles with (bromoethynyl)triisopropylsilane afforded 1,3-bis(triisopropylsilylethynyl) isoindoles in high yields. The formal C-H alkynylation proceeds under transition-metal-free conditions through [4 + 2] cycloaddition of the pyrrole ring of isoindole with bromoalkyne followed by ring-opening of the product.
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Affiliation(s)
- Toshimichi Ohmura
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto 615-8510, Japan.
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39
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Mahuteau-Betzer F, Piguel S. Synthesis and evaluation of photophysical properties of Series of π-conjugated oxazole dyes. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.037] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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40
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Huang Z, Shang R, Zhang ZR, Tan XD, Xiao X, Fu Y. Copper-Catalyzed Decarboxylative Coupling of Alkynyl Carboxylates with 1,1-Dibromo-1-alkenes. J Org Chem 2013; 78:4551-7. [DOI: 10.1021/jo400616r] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Zheng Huang
- Anhui Province
Key Laboratory of Biomass Clean Energy,
Collaborative Innovative Center of Chemistry for Energy Materials,
and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Rui Shang
- Anhui Province
Key Laboratory of Biomass Clean Energy,
Collaborative Innovative Center of Chemistry for Energy Materials,
and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Zi-Rong Zhang
- Anhui Province
Key Laboratory of Biomass Clean Energy,
Collaborative Innovative Center of Chemistry for Energy Materials,
and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Xiao-Dan Tan
- Anhui Province
Key Laboratory of Biomass Clean Energy,
Collaborative Innovative Center of Chemistry for Energy Materials,
and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Xiao Xiao
- Anhui Province
Key Laboratory of Biomass Clean Energy,
Collaborative Innovative Center of Chemistry for Energy Materials,
and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yao Fu
- Anhui Province
Key Laboratory of Biomass Clean Energy,
Collaborative Innovative Center of Chemistry for Energy Materials,
and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
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41
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Schneider C, Masi D, Couve-Bonnaire S, Pannecoucke X, Hoarau C. Palladium- and Copper-Catalyzed Stereocontrolled Direct CH Fluoroalkenylation of Heteroarenes usinggem-Bromofluoroalkenes. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209446] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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42
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Schneider C, Masi D, Couve-Bonnaire S, Pannecoucke X, Hoarau C. Palladium- and Copper-Catalyzed Stereocontrolled Direct CH Fluoroalkenylation of Heteroarenes usinggem-Bromofluoroalkenes. Angew Chem Int Ed Engl 2013; 52:3246-9. [DOI: 10.1002/anie.201209446] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Indexed: 01/02/2023]
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43
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Chen W, Li P, Miao T, Meng LG, Wang L. An efficient tandem elimination–cyclization–desulfitative arylation of 2-(gem-dibromovinyl)phenols(thiophenols) with sodium arylsulfinates. Org Biomol Chem 2013. [DOI: 10.1039/c2ob27232f] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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44
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Liu J, Zhang N, Yue Y, Wang D, Zhang Y, Zhang X, Zhuo K. A simple and efficient approach to 2-alkynylbenzofurans under mild copper(i)-catalyzed conditions. RSC Adv 2013. [DOI: 10.1039/c3ra00093a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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45
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Zhang J, Yang Y, Wang M, Lin L, Wang R. Asymmetric addition of benzothiazole to N-tert-butanesulfinyl imine for the synthesis of chiral α-branched heteroaryl amines. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.09.131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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Fang ZD, Fang D, Cheng Q. Sequential three-component synthesis of 1,4-bis[6,9-dihydro-6-oxo-9-phenyl-1H-purin-2-yl]piperazines. JOURNAL OF CHEMICAL RESEARCH 2012. [DOI: 10.3184/174751912x13505755737168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A simple one-pot efficient method for the synthesis of 1,4-bis[6,9-dihydro-6-oxo-9-phenyl-1 H-purin-2-yl]piperazines by a domino three-component process involves an aza-Wittig reaction/heterocyclisation in the presence of sodium ethoxide as catalyst. Ethyl 1-phenyl-5-[(triphenylphosphoranylidene)amino]-1H-imidazole-4-carboxylate reacted with aromatic isocyanate to give carbodiimide intermediates, followed by addition of piperazines to give the corresponding guanidine intermediates. The guanidine intermediates were cyclised in the presence of a catalytic amount of sodium ethoxide to give 1,4-bis(6,9-dihydro-6-oxo-9-phenyl-1 H-purin-2-yl)piperazine derivatives in good yields.
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Affiliation(s)
- Zheng Dong Fang
- College of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, P. R. China
| | - Di Fang
- College of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, P. R. China
| | - Quan Cheng
- College of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, P. R. China
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47
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Jeyachandran R, Potukuchi HK, Ackermann L. Copper-catalyzed CuAAC/intramolecular C-H arylation sequence: Synthesis of annulated 1,2,3-triazoles. Beilstein J Org Chem 2012; 8:1771-7. [PMID: 23209511 PMCID: PMC3511011 DOI: 10.3762/bjoc.8.202] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Accepted: 09/19/2012] [Indexed: 01/31/2023] Open
Abstract
Step-economical syntheses of annulated 1,2,3-triazoles were accomplished through copper-catalyzed intramolecular direct arylations in sustainable one-pot reactions. Thus, catalyzed cascade reactions involving [3 + 2]-azide-alkyne cycloadditions (CuAAC) and C-H bond functionalizations provided direct access to fully substituted 1,2,3-triazoles with excellent chemo- and regioselectivities. Likewise, the optimized catalytic system proved applicable to the direct preparation of 1,2-diarylated azoles through a one-pot C-H/N-H arylation reaction.
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Affiliation(s)
- Rajkumar Jeyachandran
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstrasse 2, 37077 Göttingen, Germany
| | - Harish Kumar Potukuchi
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstrasse 2, 37077 Göttingen, Germany
- Lehrstuhl für Organische Chemie I, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstrasse 2, 37077 Göttingen, Germany
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48
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Synthesis of 1,2-disubstituted acetylenes via copper-catalyzed Suzuki coupling of organoboronic acids with 1,1-dibromo-1-alkenes. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.08.044] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Shibahara F, Dohke Y, Murai T. Palladium-Catalyzed C–H Bond Direct Alkynylation of 5-Membered Heteroarenes: A Well-Defined Synthetic Route to Azole Derivatives Containing Two Different Alkynyl Groups. J Org Chem 2012; 77:5381-8. [DOI: 10.1021/jo3008385] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Fumitoshi Shibahara
- Department
of Chemistry, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Yoshimasa Dohke
- Department
of Chemistry, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Toshiaki Murai
- Department
of Chemistry, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
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50
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Liu J, Chen W, Ji Y, Wang L. A Highly Efficient Tandem Reaction of 2-(gem-Dibromovinyl)phenols(thiophenols) with Organosilanes to 2-Arylbenzofurans (thiophenes). Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100875] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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