1
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Wang Y, Zhang B, Zheng Y, Ma Q, Sui Q, Lei X. Practical and scalable preparation of Minodronic acid and Zolpidem from 2-chloroimidazole[1,2-a]pyridines. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.01.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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2
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Li J, Tan E, Keller N, Chen YH, Zehetmaier PM, Jakowetz AC, Bein T, Knochel P. Cobalt-Catalyzed Electrophilic Aminations with Anthranils: An Expedient Route to Condensed Quinolines. J Am Chem Soc 2018; 141:98-103. [PMID: 30558415 PMCID: PMC6400427 DOI: 10.1021/jacs.8b11466] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
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The
reaction of various organozinc pivalates with anthranils provides
anilines derivatives, which cyclize under acidic conditions providing
condensed quinolines. Using alkenylzinc pivalates, electron-rich arylzinc
pivalates or heterocyclic zinc pivalates produces directly the condensed
quinolines of which several structures belong to new heterocyclic
scaffolds. These N-heterocycles are of particular interest for organic
light emitting diodes with their high photoluminescence quantum yields
and long exciton lifetimes as well as for hole-transporting materials
in methylammonium lead iodide perovskites solar cells due to an optimal
band alignment for holes and a large bandgap.
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Affiliation(s)
- Jie Li
- Department Chemie , Ludwig-Maximilians-Universität München , Butenandtstraße 5-13, Haus F , 81377 Munich , Germany.,School of Pharmaceutical Science , Jiangnan University , Lihu Road 1800 , 214122 Wuxi , Jiangsu , China
| | - Eric Tan
- Department Chemie , Ludwig-Maximilians-Universität München , Butenandtstraße 5-13, Haus F , 81377 Munich , Germany
| | - Niklas Keller
- Department Chemie , Ludwig-Maximilians-Universität München , Butenandtstraße 5-13, Haus F , 81377 Munich , Germany
| | - Yi-Hung Chen
- Department Chemie , Ludwig-Maximilians-Universität München , Butenandtstraße 5-13, Haus F , 81377 Munich , Germany
| | - Peter M Zehetmaier
- Department Chemie , Ludwig-Maximilians-Universität München , Butenandtstraße 5-13, Haus F , 81377 Munich , Germany
| | - Andreas C Jakowetz
- Department Chemie , Ludwig-Maximilians-Universität München , Butenandtstraße 5-13, Haus F , 81377 Munich , Germany
| | - Thomas Bein
- Department Chemie , Ludwig-Maximilians-Universität München , Butenandtstraße 5-13, Haus F , 81377 Munich , Germany
| | - Paul Knochel
- Department Chemie , Ludwig-Maximilians-Universität München , Butenandtstraße 5-13, Haus F , 81377 Munich , Germany
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3
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Greiner R, Ziegler DS, Cibu D, Jakowetz AC, Auras F, Bein T, Knochel P. Preparation of Polyfunctional Naphthyridines by Cobalt-Catalyzed Cross-Couplings of Halogenated Naphthyridines with Magnesium and Zinc Organometallics. Org Lett 2017; 19:6384-6387. [PMID: 29152984 PMCID: PMC6400433 DOI: 10.1021/acs.orglett.7b03242] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
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CoCl2 (5%)
catalyzes cross-couplings of various halogenated
naphthyridines with alkyl- and arylmagnesium halides. Also, arylzinc
halides undergo smooth cross-couplings with various naphthyridines
in the presence of CoCl2·2LiCl (5%) and sodium formate
(50%), leading to polyfunctional arylated naphthyridines. Two of these
arylated naphthyridines are highly fluorescent, with quantum efficiencies
reaching 95% and long excited-state lifetimes of up to 12 ns.
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Affiliation(s)
- Robert Greiner
- Department of Chemistry, Ludwig-Maximilians-Universität , Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Dorothée S Ziegler
- Department of Chemistry, Ludwig-Maximilians-Universität , Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Denise Cibu
- Department of Chemistry, Ludwig-Maximilians-Universität , Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Andreas C Jakowetz
- Department of Chemistry, Ludwig-Maximilians-Universität , Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Florian Auras
- Cavendish Laboratory, University of Cambridge , Cambridge CB3 0HE, United Kingdom
| | - Thomas Bein
- Department of Chemistry, Ludwig-Maximilians-Universität , Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Paul Knochel
- Department of Chemistry, Ludwig-Maximilians-Universität , Butenandtstrasse 5-13, 81377 Munich, Germany
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4
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Galenko AV, Shakirova FM, Galenko EE, Novikov MS, Khlebnikov AF. Fe(II)/Au(I) Relay Catalyzed Propargylisoxazole to Pyridine Isomerization: Access to 6-Halonicotinates. J Org Chem 2017; 82:5367-5379. [PMID: 28452217 DOI: 10.1021/acs.joc.7b00736] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient synthesis of methyl nicotinates/6-halonicotinates by the domino isomerization of 4-propargyl/(3-halopropargyl)-5-methoxyisoxazoles under Fe(II)/Au(I) relay catalysis was developed. It was found that FeNTf2 is an effective catalyst for first step of the domino isomerization, transformation of isoxazole to 2H-azirine, which is compatible with Ph3PAuNTf2, catalyzing the second step.
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Affiliation(s)
- Alexey V Galenko
- Saint Petersburg State University , Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Firuza M Shakirova
- Saint Petersburg State University , Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Ekaterina E Galenko
- Saint Petersburg State University , Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Mikhail S Novikov
- Saint Petersburg State University , Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Alexander F Khlebnikov
- Saint Petersburg State University , Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
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5
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Zhu SQ, Xu XH, Qing FL. Silver-mediated oxidative C–H difluoromethylation of phenanthridines and 1,10-phenanthrolines. Chem Commun (Camb) 2017; 53:11484-11487. [DOI: 10.1039/c7cc05411d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient silver-mediated oxidative C–H difluoromethylation of phenanthridines and 1,10-phenanthrolines with TMSCF2H was developed.
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Affiliation(s)
- Sheng-Qing Zhu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Science
- Shanghai 200032
- China
| | - Xiu-Hua Xu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Science
- Shanghai 200032
- China
| | - Feng-Ling Qing
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Science
- Shanghai 200032
- China
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6
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Auras F, Ascherl L, Hakimioun AH, Margraf JT, Hanusch FC, Reuter S, Bessinger D, Döblinger M, Hettstedt C, Karaghiosoff K, Herbert S, Knochel P, Clark T, Bein T. Synchronized Offset Stacking: A Concept for Growing Large-Domain and Highly Crystalline 2D Covalent Organic Frameworks. J Am Chem Soc 2016; 138:16703-16710. [PMID: 27992179 PMCID: PMC6400430 DOI: 10.1021/jacs.6b09787] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
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Covalent
organic frameworks (COFs), formed by reversible condensation
of rigid organic building blocks, are crystalline and porous materials
of great potential for catalysis and organic electronics. Particularly
with a view of organic electronics, achieving a maximum degree of
crystallinity and large domain sizes while allowing for a tightly
π-stacked topology would be highly desirable. We present a design
concept that uses the 3D geometry of the building blocks to generate
a lattice of uniquely defined docking sites for the attachment of
consecutive layers, thus allowing us to achieve a greatly improved
degree of order within a given average number of attachment and detachment
cycles during COF growth. Synchronization of the molecular geometry
across several hundred nanometers promotes the growth of highly crystalline
frameworks with unprecedented domain sizes. Spectroscopic data indicate
considerable delocalization of excitations along the π-stacked
columns and the feasibility of donor–acceptor excitations across
the imine bonds. The frameworks developed in this study can serve
as a blueprint for the design of a broad range of tailor-made 2D COFs
with extended π-conjugated building blocks for applications
in photocatalysis and optoelectronics.
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Affiliation(s)
- Florian Auras
- Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU) , Butenandtstraße 5-13, 81377 Munich, Germany.,Cavendish Laboratory, University of Cambridge , Cambridge CB3 0HE, United Kingdom
| | - Laura Ascherl
- Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU) , Butenandtstraße 5-13, 81377 Munich, Germany
| | - Amir H Hakimioun
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU) , Computer-Chemie-Centrum, Nägelsbachstraße 25, 91052 Erlangen, Germany
| | - Johannes T Margraf
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU) , Computer-Chemie-Centrum, Nägelsbachstraße 25, 91052 Erlangen, Germany
| | - Fabian C Hanusch
- Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU) , Butenandtstraße 5-13, 81377 Munich, Germany
| | - Stephan Reuter
- Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU) , Butenandtstraße 5-13, 81377 Munich, Germany
| | - Derya Bessinger
- Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU) , Butenandtstraße 5-13, 81377 Munich, Germany
| | - Markus Döblinger
- Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU) , Butenandtstraße 5-13, 81377 Munich, Germany
| | - Christina Hettstedt
- Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU) , Butenandtstraße 5-13, 81377 Munich, Germany
| | - Konstantin Karaghiosoff
- Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU) , Butenandtstraße 5-13, 81377 Munich, Germany
| | - Simon Herbert
- Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU) , Butenandtstraße 5-13, 81377 Munich, Germany
| | - Paul Knochel
- Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU) , Butenandtstraße 5-13, 81377 Munich, Germany
| | - Timothy Clark
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU) , Computer-Chemie-Centrum, Nägelsbachstraße 25, 91052 Erlangen, Germany
| | - Thomas Bein
- Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU) , Butenandtstraße 5-13, 81377 Munich, Germany
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