1
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Habib I, Singha K, Hossain M. Recent Progress on Pyridine
N
‐Oxide in Organic Transformations: A Review. ChemistrySelect 2023. [DOI: 10.1002/slct.202204099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Imran Habib
- Synthetic Organic Research Laboratory UGC-HRDC (Chemistry) University of North Bengal Siliguri Darjeeling 734013 India
| | - Koustav Singha
- Synthetic Organic Research Laboratory UGC-HRDC (Chemistry) University of North Bengal Siliguri Darjeeling 734013 India
| | - Mossaraf Hossain
- Synthetic Organic Research Laboratory UGC-HRDC (Chemistry) University of North Bengal Siliguri Darjeeling 734013 India
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2
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Kumar R, Nguyen QH, Um TW, Shin S. Recent Progress in Enolonium Chemistry under Metal-Free Conditions. CHEM REC 2021; 22:e202100172. [PMID: 34418282 DOI: 10.1002/tcr.202100172] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/08/2021] [Accepted: 08/11/2021] [Indexed: 11/09/2022]
Abstract
Umpolung approach through inversion of the polarity of conventional enolates, has opened up an unprecedented opportunity in the cross-coupling via alkylation. The enolonium equivalents can be accessed either by hypervalent iodine reagents, activation/oxidation of amides, or the oxidation of alkynes. Under umpolung conditions, highly basic conditions required for classical enolate chemistry can be avoided, and they can couple with unmodified nucleophiles such as heteroatom donors and electron-rich arenes.
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Affiliation(s)
- Ravi Kumar
- Department of Chemistry, Center for New Directions in Organic Chemistry (CNOS), and Institute for Natural Sciences, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
| | - Quynh H Nguyen
- Department of Chemistry, Center for New Directions in Organic Chemistry (CNOS), and Institute for Natural Sciences, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
| | - Tae-Woong Um
- Department of Chemistry, Center for New Directions in Organic Chemistry (CNOS), and Institute for Natural Sciences, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
| | - Seunghoon Shin
- Department of Chemistry, Center for New Directions in Organic Chemistry (CNOS), and Institute for Natural Sciences, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
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3
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Deng Y, Zhang J, Bankhead B, Markham JP, Zeller M. Photoinduced oxidative cyclopropanation of ene-ynamides: synthesis of 3-aza[ n.1.0]bicycles via vinyl radicals. Chem Commun (Camb) 2021; 57:5254-5257. [PMID: 33973595 DOI: 10.1039/d1cc02016a] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The first photoinduced synthesis of polyfunctionalized 3-aza[n.1.0]bicycles from readily available ene-ynamides and 2,6-lutidine N-oxide using an organic acridinium photocatalyst is reported. Applying a photocatalytic strategy to the reactive distonic cation vinyl radical intermediate from ynamide, a series of bio-valuable 3-azabicycles, including diverse 3-azabicyclio[4.1.0]heptanes and 3-azabicyclo[5.1.0]octanes that are challenging to accomplish using traditional methods, have been successfully synthesized in good to high yields under mild and metal-free conditions. Mechanistic studies are consistent with the photocatalyzed single-electron oxidation of ene-ynamide and the intermediacy of a putative cationic vinyl radical in this transformation. Importantly, this strategy provides new access to the development of photocatalytic vinyl radical cascades for the synthesis of structurally sophisticated substrates.
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Affiliation(s)
- Yongming Deng
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, 402 N Blackford St, Indianapolis, Indiana 46202, USA.
| | - Jason Zhang
- Chemistry Department, Western Kentucky University, Bowling Green, KY 42101, USA
| | - Bradley Bankhead
- Chemistry Department, Western Kentucky University, Bowling Green, KY 42101, USA
| | - Jonathan P Markham
- Chemistry Department, Western Kentucky University, Bowling Green, KY 42101, USA
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4
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Nan J, Zhang J, Hu Y, Wang C, Wang T, Wang W, Ma Y, Szostak M. Cu II-Catalyzed Coupling with Two Ynone Units by Selective Triple and Sigma C-C and C-H Bond Cleavages. Org Lett 2021; 23:1928-1933. [PMID: 33570962 DOI: 10.1021/acs.orglett.1c00371] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We report a new copper-catalyzed [2 + 2 + 1] annulation process through the selective cleavage of sigma and triple C-C and C-H bonds using two ynone units. This new methodology involves breaking multiple chemical bonds in a single operation, including C≡C, C-C, C-H, and N-O. These high-value adducts lead to a diverse collection of synthetically challenging trisubstituted indolizines by the simultaneous engagement of different bond-breaking events and show excellent fluorescence in green aqueous solutions.
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Affiliation(s)
- Jiang Nan
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Jiawen Zhang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yan Hu
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Chao Wang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Tingting Wang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Weitao Wang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yangmin Ma
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Michal Szostak
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.,Department of Chemistry, Rutgers University, Newark, New Jersey 07102, United States
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5
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Recent Advances in the Synthesis of C2‐Functionalized Pyridines and Quinolines Using
N
‐Oxide Chemistry. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000910] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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6
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Abstract
Over the past two decades, the development and application of ynamide chemistry have received more and more attention. Ynamides have proven to be versatile reagents for organic synthesis, and have been widely applied to the rapid assembly of a diverse range of structurally complex N-containing molecules, especially the valuable N-heterocycles. In comparison with the well-established transition metal-catalyzed reactions of ynamides, metal-free ynamide transformations have relatively seldom been exploited. Recently, Brønsted acid-mediated reactions of ynamides represent significant advances in ynamide chemistry. This review summarizes the latest trends and developments of Brønsted acid-mediated reactions of ynamides, including cycloaddition, cyclization, intramolecular alkoxylation-initiated rearrangement, oxygen atom transfer reactions and hydro-heteroatom addition reactions.
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Affiliation(s)
- Yang-Bo Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
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7
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He Q, Xie F, Xia C, Liang W, Guo Z, Zhu Z, Li Y, Chen X. Copper-Catalyzed Selective 1,2-Difunctionalization of N-Heteroaromatics through Cascade C-N/C═C/C═O Bond Formation. Org Lett 2020; 22:7976-7980. [PMID: 32997943 DOI: 10.1021/acs.orglett.0c02910] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This study presents an efficient strategy for constructing 1,2-difunctionalized quinoline derivatives via the multicomponent cascade coupling of N-heteroaromatics with alkyl halides and different terminal alkynes. This reaction was achieved through sequential functionalization at the one- and two-positions of quinolines, which displayed a broad substrate scope, environmental friendliness, excellent functional group tolerance, high atom efficiency, and chemoselectivity. The multicomponent coupling involved the abnormal construction of new C-N, C═C, and C═O bonds in one pot. The applicability of this method was further demonstrated by the late-stage functionalization of complex drug molecules under the established conditions.
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Affiliation(s)
- Qianlin He
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Feng Xie
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Chuanjiang Xia
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Wanyi Liang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Ziyin Guo
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Zhongzhi Zhu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Yibiao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Xiuwen Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
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8
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Liu Q, Zhang CS, Sheng H, Enders D, Wang ZX, Chen XY. Site-Selective Pyridyl Alkyl Ketone Synthesis from N-Alkenoxypyridiniums through Boekelheide-Type Rearrangements. Org Lett 2020; 22:5617-5621. [DOI: 10.1021/acs.orglett.0c01984] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qiang Liu
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Chao-Shen Zhang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - He Sheng
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Xiang-Yu Chen
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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9
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Yang WW, Chen LL, Chen P, Ye YF, Wang YB, Zhang X. Solvent-controlled divergent annulation of ynones and (iso)quinoline N-oxides: of 3-((iso)quinolin-1-yl)-4H-chromen-4-ones and 13H-isoquinolino[2,1-a]quinolin-13-ones. Chem Commun (Camb) 2020; 56:1183-1186. [PMID: 31894780 DOI: 10.1039/c9cc08713c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An effective annulation of ynones and (iso)quinoline N-oxides was developed to deliver various functionalized 3-((iso)quinolin-1-yl)-4H-chromen-4-ones and 13H-isoquinolino[2,1-a]quinolin-13-ones in moderate to excellent yields, respectively. This protocol exhibits high regioselectivity and broad substrate scope under transition-metal-free conditions. Moreover, the key reaction intermediate was successfully isolated and determined unambiguously by single crystal X-ray crystallography.
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Affiliation(s)
- Wan-Wan Yang
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China.
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10
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Liu J, Ba D, Chen Y, Wen S, Cheng G. Synthesis of 3-(2-quinolyl) chromones from ynones and quinoline N-oxides via tandem reactions under transition metal- and additive-free conditions. Chem Commun (Camb) 2020; 56:4078-4081. [DOI: 10.1039/c9cc09460a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The synthesis of 3-(2-quinolyl) chromones from ynones and quinoline N-oxides via a sequential [3+2] cycloaddition/ring-opening/O-arylation reaction under transition metal- and additive-free conditions is reported.
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Affiliation(s)
- Jing Liu
- College of Materials Science & Engineering
- Huaqiao University
- Xiamen 361021
- China
| | - Dan Ba
- College of Materials Science & Engineering
- Huaqiao University
- Xiamen 361021
- China
| | - Yanhui Chen
- College of Materials Science & Engineering
- Huaqiao University
- Xiamen 361021
- China
| | - Si Wen
- College of Materials Science & Engineering
- Huaqiao University
- Xiamen 361021
- China
| | - Guolin Cheng
- College of Materials Science & Engineering
- Huaqiao University
- Xiamen 361021
- China
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11
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Zhang S, Wu C, Zhang Z, Wang T. Metal-Free Synthesis of 3-(Iso)quinolinyl 4-Chromenones and 3-(Iso)quinolinyl 4-Quinolones from (Iso)quinoline N-Oxides and Ynones. Org Lett 2019; 21:9995-9998. [PMID: 31794231 DOI: 10.1021/acs.orglett.9b03921] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Shan Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No.620 West Chang’an Avenue, Xi’an 710119, China
| | - Chun Wu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No.620 West Chang’an Avenue, Xi’an 710119, China
| | - Zunting Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No.620 West Chang’an Avenue, Xi’an 710119, China
| | - Tao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No.620 West Chang’an Avenue, Xi’an 710119, China
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12
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Li X, Zhou G, Du X, Wang T, Zhang Z. Catalyst- and Additive-Free Cascade Reaction of Isoquinoline N-Oxides with Alkynones: An Approach to Benzoazepino[2,1-a]isoquinoline Derivatives. Org Lett 2019; 21:5630-5633. [PMID: 31287323 DOI: 10.1021/acs.orglett.9b01966] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Xuetong Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang’an Avenue, Xi’an 710119, China
| | - Guanghua Zhou
- Department of Chemistry, Nanchang Normal University, No. 889 Ruixiang Road, Nanchang 330032, China
| | - Xinru Du
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang’an Avenue, Xi’an 710119, China
| | - Tao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang’an Avenue, Xi’an 710119, China
| | - Zunting Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang’an Avenue, Xi’an 710119, China
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13
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Xu JH, Wu WB, Wu J. Photoinduced Divergent Alkylation/Acylation of Pyridine N-Oxides with Alkynes under Anaerobic and Aerobic Conditions. Org Lett 2019; 21:5321-5325. [DOI: 10.1021/acs.orglett.9b01940] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Jin-hui Xu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Republic of Singapore
| | - Wen-bin Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Republic of Singapore
| | - Jie Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Republic of Singapore
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14
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Quillen A, Nguyen Q, Neiser M, Lindsay K, Rosen A, Ramirez S, Costan S, Johnson N, Do TD, Rodriguez O, Rivera D, Atesin A, Ateşin TA, Ma L. Palladium-Catalyzed Direct α-C(sp3) Heteroarylation of Ketones under Microwave Irradiation. J Org Chem 2019; 84:7652-7663. [PMID: 31001979 DOI: 10.1021/acs.joc.9b00446] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Heteroaryl compounds are valuable building blocks in medicinal chemistry and chemical industry. A palladium-catalyzed direct α-C(sp3) heteroarylation of ketones under microwave irradiation is developed and reported in this study. Under optimized conditions, twenty-eight (28) heteroarylated ketones were prepared in this study to demonstrate the substrate scope of this reaction. The ground-state optimized structure of Pd(0) active catalyst with 2-dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl (XPhos) in toluene, and the products of its reaction with 3-bromopyridine and acetophenone were studied using all-atom density functional theory. This study provided insightful information for palladium catalytic system design to generate heteroaryl compounds.
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Affiliation(s)
- Andrew Quillen
- Department of Chemistry & Biochemistry , Northern Kentucky University , Nunn Drive , Highland Heights , Kentucky 41099 , United States
| | - Quynh Nguyen
- Department of Chemistry & Biochemistry , Northern Kentucky University , Nunn Drive , Highland Heights , Kentucky 41099 , United States
| | - Matthew Neiser
- Department of Chemistry & Biochemistry , Northern Kentucky University , Nunn Drive , Highland Heights , Kentucky 41099 , United States
| | - Kara Lindsay
- Department of Chemistry & Biochemistry , Northern Kentucky University , Nunn Drive , Highland Heights , Kentucky 41099 , United States
| | - Alexander Rosen
- Department of Chemistry & Biochemistry , Northern Kentucky University , Nunn Drive , Highland Heights , Kentucky 41099 , United States
| | - Stephen Ramirez
- Department of Chemistry & Biochemistry , Northern Kentucky University , Nunn Drive , Highland Heights , Kentucky 41099 , United States
| | - Stefana Costan
- Department of Chemistry & Biochemistry , Northern Kentucky University , Nunn Drive , Highland Heights , Kentucky 41099 , United States
| | - Nathan Johnson
- Department of Chemistry & Biochemistry , Northern Kentucky University , Nunn Drive , Highland Heights , Kentucky 41099 , United States
| | - Thuy Donna Do
- Department of Chemistry & Biochemistry , Northern Kentucky University , Nunn Drive , Highland Heights , Kentucky 41099 , United States
| | - Oscar Rodriguez
- Department of Chemistry , The University of Texas Rio Grande Valley , Edinburg , Texas 78541 , United States
| | - Diego Rivera
- Department of Chemistry , The University of Texas Rio Grande Valley , Edinburg , Texas 78541 , United States
| | - Abdurrahman Atesin
- Department of Chemistry , The University of Texas Rio Grande Valley , Edinburg , Texas 78541 , United States
| | - Tülay Aygan Ateşin
- Department of Chemistry , The University of Texas Rio Grande Valley , Edinburg , Texas 78541 , United States
| | - Lili Ma
- Department of Chemistry & Biochemistry , Northern Kentucky University , Nunn Drive , Highland Heights , Kentucky 41099 , United States
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15
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Markham JP, Wang B, Stevens ED, Burris SC, Deng Y. ortho
‐Alkylation of Pyridine
N
‐Oxides with Alkynes by Photocatalysis: Pyridine
N
‐Oxide as a Redox Auxiliary. Chemistry 2019; 25:6638-6644. [DOI: 10.1002/chem.201901065] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Jonathan P. Markham
- Chemistry DepartmentWestern Kentucky University 1906 College Heights Boulevard Bowling Green Kentucky 42101 USA
| | - Ban Wang
- Chemistry DepartmentWestern Kentucky University 1906 College Heights Boulevard Bowling Green Kentucky 42101 USA
| | - Edwin D. Stevens
- Chemistry DepartmentWestern Kentucky University 1906 College Heights Boulevard Bowling Green Kentucky 42101 USA
| | - Stuart C. Burris
- Chemistry DepartmentWestern Kentucky University 1906 College Heights Boulevard Bowling Green Kentucky 42101 USA
| | - Yongming Deng
- Chemistry DepartmentWestern Kentucky University 1906 College Heights Boulevard Bowling Green Kentucky 42101 USA
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16
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Li X, Wang T, Zhang Z. Synthesis of 4-(Iso)Quinolinyl-3(2H
)-furanones from (Iso)Quinoline N
-oxides and 1,4-Diyn-3-ones: A Comparison of Copper Catalysis and Metal-free Reaction. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801382] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Xuetong Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; No.620 West Chang'an Avenue Xi'an 710119 People's Republic of China
| | - Tao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; No.620 West Chang'an Avenue Xi'an 710119 People's Republic of China
| | - Zunting Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; No.620 West Chang'an Avenue Xi'an 710119 People's Republic of China
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17
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Zhang YQ, Zhu XQ, Chen YB, Tan TD, Yang MY, Ye LW. Synthesis of Isothiochroman-3-ones via Metal-Free Oxidative Cyclization of Alkynyl Thioethers. Org Lett 2018; 20:7721-7725. [PMID: 30444375 DOI: 10.1021/acs.orglett.8b03462] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel Brønsted acid-catalyzed oxidative C-H functionalization of alkynyl thioethers has been developed. This method allows the practical synthesis of valuable isothiochroman-3-ones in mostly moderate to good yields under mild reaction conditions and features a broad substrate scope and wide functional group tolerance. Moreover, this metal-free oxidation can also be used to promote formal N-H insertion involving an unexpected 1,2-sulfur migration, affording useful 1,4-benzothiazin-3-ones.
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Affiliation(s)
- Ying-Qi Zhang
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Xin-Qi Zhu
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Yang-Bo Chen
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Tong-De Tan
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Ming-Yang Yang
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Long-Wu Ye
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China.,State Key Laboratory of Organometallic Chemistry , Chinese Academy of Sciences , Shanghai 200032 , China
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18
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Petrosyan A, Hauptmann R, Pospech J. Heteroarene N
-Oxides as Oxygen Source in Organic Reactions. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800152] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Andranik Petrosyan
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Str. 29a 18057 Rostock Germany
| | - Richy Hauptmann
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Str. 29a 18057 Rostock Germany
| | - Jola Pospech
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Str. 29a 18057 Rostock Germany
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19
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Rajale T, Sharma S, Unruh DK, Stroud DA, Birney DM. A pseudopericyclic [3,5]-sigmatropic rearrangement of a coumarin trichloroacetimidate derivative. Org Biomol Chem 2018; 16:874-879. [DOI: 10.1039/c7ob02335a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A Woodward–Hoffmann forbidden, eight-centered transition state leads to the sole product of a pentadienyl imidate rearrangement.
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Affiliation(s)
- Trideep Rajale
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
- Center for Integrated Nanotechnologies
| | - Shikha Sharma
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | - Daniel K. Unruh
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | - Daniel A. Stroud
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | - David M. Birney
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
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20
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Shen WB, Sun Q, Li L, Liu X, Zhou B, Yan JZ, Lu X, Ye LW. Divergent synthesis of N-heterocycles via controllable cyclization of azido-diynes catalyzed by copper and gold. Nat Commun 2017; 8:1748. [PMID: 29170497 PMCID: PMC5701061 DOI: 10.1038/s41467-017-01853-1] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 10/19/2017] [Indexed: 12/01/2022] Open
Abstract
Gold-catalyzed intermolecular alkyne oxidation by an N–O bond oxidant has proven to be a powerful method in organic synthesis during the past decade, because this approach would enable readily available alkynes as precursors in generating α-oxo gold carbenes. Among those, gold-catalyzed oxidative cyclization of dialkynes has received particular attention as this chemistry offers great potential to build structurally complex cyclic molecules. However, these alkyne oxidations have been mostly limited to noble metal catalysts, and, to our knowledge, non-noble metal-catalyzed reactions such as diyne oxidations have not been reported. Herein, we disclose a copper-catalyzed oxidative diyne cyclization, allowing the facile synthesis of a wide range of valuable pyrrolo[3,4-c]quinolin-1-ones. Interestingly, by employing the same starting materials, the gold-catalyzed cascade cyclization leads to the divergent formation of synthetically useful pyrrolo[2,3-b]indoles. Furthermore, the proposed mechanistic rationale for these cascade reactions is strongly supported by both control experiments and theoretical calculations. Fused N-heterocycles are structural motifs observed in natural products and bioactive compounds. Here, the authors developed divergent copper- and gold-catalyzed oxidative cyclizations of diynes to two types of tricyclic N-heterocycles and rationalized the product selectivity by theoretical calculations.
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Affiliation(s)
- Wen-Bo Shen
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Qing Sun
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Long Li
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Xin Liu
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Bo Zhou
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Juan-Zhu Yan
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Xin Lu
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
| | - Long-Wu Ye
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China.
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21
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Shaaban S, Tona V, Peng B, Maulide N. Hydroxamic Acids as Chemoselective (ortho-Amino)arylation Reagents via Sigmatropic Rearrangement. Angew Chem Int Ed Engl 2017; 56:10938-10941. [PMID: 28691189 DOI: 10.1002/anie.201703667] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 06/30/2017] [Indexed: 01/02/2023]
Abstract
The use of readily available hydroxamic acids as reagents for the chemoselective (ortho-amino)arylation of amides is described. This reaction proceeds under metal-free, mild conditions, displays a very broad scope, and constitutes a direct approach for the metal-free attachment of aniline residues to carbonyl derivatives.
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Affiliation(s)
- Saad Shaaban
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
| | - Veronica Tona
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
| | - Bo Peng
- Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, China
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
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22
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Shaaban S, Tona V, Peng B, Maulide N. Hydroxamsäuren als chemoselektive (ortho
-Amino)arylierungsreagenzien durch sigmatrope Umlagerung. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703667] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Saad Shaaban
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Veronica Tona
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Bo Peng
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 China
| | - Nuno Maulide
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
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23
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Zhang B, Huang L, Yin S, Li X, Xu T, Zhuang B, Wang T, Zhang Z, Hashmi ASK. Cascade C═O/C═C/C–N Bond Formation: Metal-Free Reactions of 1,4-Diynes and 1-En-4-yn-3-ones with Isoquinoline and Quinoline N-Oxides. Org Lett 2017; 19:4327-4330. [PMID: 28753297 DOI: 10.1021/acs.orglett.7b01996] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Bing Zhang
- School
of Chemistry and Chemical Engineering, Shaanxi Normal University, No.620 West Chang’an Avenue, Xi’an 710119, China
| | - Long Huang
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
| | - Shiwei Yin
- School
of Chemistry and Chemical Engineering, Shaanxi Normal University, No.620 West Chang’an Avenue, Xi’an 710119, China
| | - Xuetong Li
- School
of Chemistry and Chemical Engineering, Shaanxi Normal University, No.620 West Chang’an Avenue, Xi’an 710119, China
| | - Tao Xu
- School
of Chemistry and Chemical Engineering, Shaanxi Normal University, No.620 West Chang’an Avenue, Xi’an 710119, China
| | - Biyang Zhuang
- School
of Chemistry and Chemical Engineering, Shaanxi Normal University, No.620 West Chang’an Avenue, Xi’an 710119, China
| | - Tao Wang
- School
of Chemistry and Chemical Engineering, Shaanxi Normal University, No.620 West Chang’an Avenue, Xi’an 710119, China
| | - Zunting Zhang
- School
of Chemistry and Chemical Engineering, Shaanxi Normal University, No.620 West Chang’an Avenue, Xi’an 710119, China
| | - A. Stephen K. Hashmi
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
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24
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de la Torre A, Kaiser D, Maulide N. Flexible and Chemoselective Oxidation of Amides to α-Keto Amides and α-Hydroxy Amides. J Am Chem Soc 2017; 139:6578-6581. [PMID: 28485589 DOI: 10.1021/jacs.7b02983] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A suite of flexible and chemoselective methods for the transition-metal-free oxidation of amides to α-keto amides and α-hydroxy amides is presented. These highly valuable motifs are accessed in good to excellent yields and stereoselectivities with high functional group tolerance. The utility of the method is showcased by the formal synthesis of a potent histone deacetylase inhibitor.
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Affiliation(s)
- Aurélien de la Torre
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna , Währinger Straße 38, 1090 Vienna, Austria
| | - Daniel Kaiser
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna , Währinger Straße 38, 1090 Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna , Währinger Straße 38, 1090 Vienna, Austria
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25
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Shang W, Li S, Ding Y, Pan Z, Tong X, Xia C. Transition-metal-free dehydrogenation coupling of pyridinium through a self-promoted hydride transfer process. Org Chem Front 2017. [DOI: 10.1039/c7qo00389g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An intramolecular dehydrogenation coupling between phenol and pyridinium through a unique substrate self-promoted hydride transfer process has been developed.
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Affiliation(s)
- Wenbin Shang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- China
| | - Shanyong Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- China
| | - Yuzhen Ding
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming 650091
| | - Zhiqiang Pan
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming 650091
| | - Xiaogang Tong
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming 650091
| | - Chengfeng Xia
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- China
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26
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Hwang C, Jo W, Cho SH. Base-promoted, deborylative secondary alkylation of N-heteroaromatic N-oxides with internal gem-bis[(pinacolato)boryl]alkanes: a facile derivatization of 2,2′-bipyridyl analogues. Chem Commun (Camb) 2017. [DOI: 10.1039/c7cc03731g] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A base-promoted, secondary alkylation of N-heteroaromatic N-oxides using internal gem-bis[(pinacolato)boryl]alkanes as alkylation reagents is achieved to form deoxygenated secondary alkylated N-heteroarenes.
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Affiliation(s)
- Chiwon Hwang
- Department of Chemistry
- Pohang University of Science and Technology (POSTECH)
- Pohang
- Republic of Korea
| | - Woohyun Jo
- Department of Chemistry
- Pohang University of Science and Technology (POSTECH)
- Pohang
- Republic of Korea
| | - Seung Hwan Cho
- Department of Chemistry
- Pohang University of Science and Technology (POSTECH)
- Pohang
- Republic of Korea
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