1
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Wang W, Qin Z, Zhang X, Zhao W, Yang W. Catalyst-free C(sp 3)-H functionalization of methyl azaarenes with heteroaromatic trifluoromethyl ketone hydrates: "all-water" synthesis of α-trifluoromethyl tertiary alcohols. Org Biomol Chem 2023; 21:4304-4308. [PMID: 37161518 DOI: 10.1039/d3ob00566f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
An efficient catalyst-free C(sp3)-H bond functionalization of methyl azaarenes with heteroaromatic trifluoromethyl ketone hydrates in neat water has been developed for the synthesis of α-trifluoromethyl tertiary alcohols bearing N-heteroaromatics. This method not only features excellent efficiency, broad substrate scope, catalyst-free conditions, and easy gram-scale preparation but also represents a new and rare example of "all-water" synthesis of trifluoromethylated molecules.
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Affiliation(s)
- Wei Wang
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China.
| | - Zhaoliang Qin
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China.
| | - Xinhui Zhang
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China.
| | - Wanxiang Zhao
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China.
| | - Wen Yang
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China.
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2
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Woo J, Christian AH, Burgess SA, Jiang Y, Mansoor UF, Levin MD. Scaffold hopping by net photochemical carbon deletion of azaarenes. Science 2022; 376:527-532. [PMID: 35482853 PMCID: PMC9107930 DOI: 10.1126/science.abo4282] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Discovery chemists routinely identify purpose-tailored molecules through an iterative structural optimization approach, but the preparation of each successive candidate in a compound series can rarely be conducted in a manner matching their thought process. This is because many of the necessary chemical transformations required to modify compound cores in a straightforward fashion are not applicable in complex contexts. We report a method that addresses one facet of this problem by allowing chemists to hop directly between chemically distinct heteroaromatic scaffolds. Specifically, we show that selective photolysis of quinoline N-oxides with 390-nanometer light followed by acid-promoted rearrangement affords N-acylindoles while showing broad compatibility with medicinally relevant functionality. Applications to late-stage skeletal modification of compounds of pharmaceutical interest and more complex transformations involving serial single-atom changes are demonstrated.
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Affiliation(s)
- Jisoo Woo
- Department of Chemistry, University of Chicago, Chicago, IL, USA
| | | | | | - Yuan Jiang
- Analytical Research and Development, Merck & Co., Inc., Boston, MA, USA
| | | | - Mark D Levin
- Department of Chemistry, University of Chicago, Chicago, IL, USA
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3
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Satyanarayana N, Sathish K, Nagaraju S, Pawar R, Faizan M, Arumugavel M, Shirisha T, Kashinath D. Metal-free, one-pot synthesis of 2-styrylquinolines via Friedländer annulation and sp3 C–H activation using 1,3-dimethylurea and l-tartaric acid (3 : 1) as a deep eutectic solvent. NEW J CHEM 2022. [DOI: 10.1039/d1nj00132a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Functionalized 2-styrylquinolines are prepared using DMU + l-(+)-tartaric acid as deep eutectic solvent. DFT calculations supported the experimental results on role of DES as catalyst. The absorption-emission spectra indicating that these compounds can be useful as fluorescent probes.
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Affiliation(s)
- Neeli Satyanarayana
- Department of Chemistry, National Institute of Technology, Warangal-506 004, India
| | - Kota Sathish
- Department of Chemistry, National Institute of Technology, Warangal-506 004, India
| | - Sakkani Nagaraju
- Department of Chemistry, National Institute of Technology, Warangal-506 004, India
| | - Ravinder Pawar
- Department of Chemistry, National Institute of Technology, Warangal-506 004, India
| | - Mohmmad Faizan
- Department of Chemistry, National Institute of Technology, Warangal-506 004, India
| | - Murgan Arumugavel
- Discipline of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat, 382355, India
| | | | - Dhurke Kashinath
- Department of Chemistry, National Institute of Technology, Warangal-506 004, India
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4
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Latha DS, Yaragorla S. C(sp3
)-H Functionalization of 2-Methyl Azaarenes: Highly Facile Approach to Aza-Heterocyclic Compounds. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901899] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Dandugula Sneha Latha
- School of Chemistry; University of Hyderabad; P.O. Central University, Gachibowli; 500046 Hyderabad India
| | - Srinivasarao Yaragorla
- School of Chemistry; University of Hyderabad; P.O. Central University, Gachibowli; 500046 Hyderabad India
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5
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Musiol R. Styrylquinoline – A Versatile Scaffold in Medicinal Chemistry. Med Chem 2020; 16:141-154. [PMID: 31161997 DOI: 10.2174/1573406415666190603103012] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 03/08/2019] [Accepted: 05/03/2019] [Indexed: 11/22/2022]
Abstract
Background: :
Styrylquinolines are characteristic fully aromatic compounds with flat,
rather lipophilic structures. The first reports on their synthesis and biological activity were published
roughly a century ago. However, their low selectivity, unfavorable toxicity and problems
with their mechanism of action significantly hampered their development. As a result, they have
been abandoned for most of the time since they were discovered.
Objective: :
Their renaissance was observed by the antiretroviral activity of several styrylquinoline
derivatives that have been reported to be HIV integrase inhibitors. Subsequently, other activities
such as their antifungal and anticancer abilities have also been revisited.
Methods:
In the present review, the spectrum of the activity of styrylquinolines and their use in
drug design is presented and analyzed.
Results:
New properties and applications that were reported recently have re-established
styrylquinolines within medicinal and material chemistry. The considerable increase in the number
of published papers regarding their activity spectrum will ensure further discoveries in the field.
Conclusions:
Styrylquinolines have earned a much stronger position in medicinal chemistry due to
the discovery of their new activities, profound mechanisms of action and as drug candidates in
clinical trials.
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Affiliation(s)
- Robert Musiol
- Institute of Chemistry, University of Silesia in Katowice, 75 Pulku Piechoty 1A, 41-500, Chorzow, Poland
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6
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Kaur M, Van Humbeck JF. Recent trends in catalytic sp 3 C-H functionalization of heterocycles. Org Biomol Chem 2020; 18:606-617. [PMID: 31912069 DOI: 10.1039/c9ob01559k] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Heterocycles are a ubiquitous substructure in organic small molecules designed for use in materials and medicines. Recent work in catalysis has focused on enabling access to new heterocycle structures by sp3 C-H functionalization on alkyl side-chain substituents-especially at the heterobenzylic position-with more than two hundred manuscripts published just within the last ten years. Rather than describing in detail each of these reports, in this mini-review we attempt to highlight gaps in existing techniques. A semi-quantitative overview of ongoing work strongly suggests that several specific heterocycle types and bond formations outside of C-C, C-N, and C-O have been almost completely overlooked.
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Affiliation(s)
- Milanpreet Kaur
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4.
| | - Jeffrey F Van Humbeck
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4.
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7
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Copper-catalyzed aerobic oxidative cyclization protocol for the synthesis of quinazolines via amination of C(sp3)-H bonds of methylazaarenes. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130783] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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8
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Das J, Vellakkaran M, Sk M, Banerjee D. Iron-Catalyzed Coupling of Methyl N-Heteroarenes with Primary Alcohols: Direct Access to E-Selective Olefins. Org Lett 2019; 21:7514-7518. [DOI: 10.1021/acs.orglett.9b02793] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jagadish Das
- Department of Chemistry, Laboratory of Catalysis and Organic Synthesis, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Mari Vellakkaran
- Department of Chemistry, Laboratory of Catalysis and Organic Synthesis, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Motahar Sk
- Department of Chemistry, Laboratory of Catalysis and Organic Synthesis, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Debasis Banerjee
- Department of Chemistry, Laboratory of Catalysis and Organic Synthesis, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
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9
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Shigeno M, Nakaji K, Nozawa-Kumada K, Kondo Y. Catalytic Amide–Base System of TMAF and N(TMS)3 for Deprotonative Coupling of Benzylic C(sp3)–H Bonds with Carbonyls. Org Lett 2019; 21:2588-2592. [DOI: 10.1021/acs.orglett.9b00550] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Masanori Shigeno
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Kunihito Nakaji
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Kanako Nozawa-Kumada
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Yoshinori Kondo
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
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10
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Abstract
Amines such as 1,2,3,4-tetrahydroisoquinoline undergo redox-neutral annulations with 2-alkylquinoline-3-carbaldehydes as well as the corresponding 4-alkyl isomers and pyridine analogues. These processes involve dual C-H bond functionalization. Acetic acid is used as a cosolvent and acts as the sole promoter of these transformations.
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Affiliation(s)
- Zhengbo Zhu
- Department of Chemistry and
Chemical Biology, Rutgers, The State University
of New Jersey, Piscataway, New Jersey 08854, United States
| | - Daniel Seidel
- Department of Chemistry and
Chemical Biology, Rutgers, The State University
of New Jersey, Piscataway, New Jersey 08854, United States
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11
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Iron-catalyzed C sp3 C sp3 bond formation via dehydrative cross coupling reaction: Facile access to new hybrid dihydroquinazolines having quinoline, isoquinoline, quinoxaline and azoles. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.03.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Feng TY, Li HX, Young DJ, Lang JP. Ligand-Free RuCl3-Catalyzed Alkylation of Methylazaarenes with Alcohols. J Org Chem 2017; 82:4113-4120. [DOI: 10.1021/acs.joc.6b03095] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Tong-Yu Feng
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou 215123, Jiangsu, People’s Republic of China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People’s Republic of China
| | - Hong-Xi Li
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou 215123, Jiangsu, People’s Republic of China
| | - David James Young
- Faculty
of Science and Engineering, University of the Sunshine Coast, Maroochydore
DC, Queensland 4558, Australia
| | - Jian-Ping Lang
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou 215123, Jiangsu, People’s Republic of China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People’s Republic of China
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13
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Nagaraju D, Rajanarendar E, Praveen Kumar P, Nagi Reddy M. Water-mediated and promoted eco-friendly one-pot synthesis of azaarene substituted isoxazoles. NEW J CHEM 2017. [DOI: 10.1039/c7nj01165b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
An efficient and green approach for the sp3 C–H bond functionalization of 2-methyl azaarenes to 3-methyl-4-nitro-5-styrylisoxazoles in water has been described.
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Affiliation(s)
| | | | - Pittala Praveen Kumar
- Division of Natural Products Chemistry (CSIR)
- Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Modugu Nagi Reddy
- Division of Natural Products Chemistry (CSIR)
- Indian Institute of Chemical Technology
- Hyderabad
- India
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14
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Mallepalli R, Vennam DKR, Perali RS. PEG-400 mediated sp 3 C H functionalization of aza-arenes: an enroute to the synthesis of 2-(2-(6-methylpyridin/quinolin-2-yl)-1-phenylethyl)malononitriles. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.08.083] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Lai S, Ren X, Zhao J, Tang Z, Li G. Simple Brønsted acid catalyzed C–H functionalization: efficient access to poly-substituted pyridines. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.05.061] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Wang M, Tian C, Wang X, Liu J, Zhang Z. A convenient one-pot process for the synthesis of 2,4-dihydroxy-6-phenylethylenyl-8-deazapteridine derivatives. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.10.084] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Jamal Z, Teo YC, Lim GS. Direct alkenylation of alkylazaarenes with aldehydes through C(sp3)–H functionalization under catalytic InCl3 activation. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.03.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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18
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Beisel T, Kirchner J, Kaehler T, Knauer J, Soltani Y, Manolikakes G. 3-Component synthesis of α-substituted sulfonamides via Brønsted acid-catalyzed C(sp3)–H bond functionalization of 2-alkylazaarenes. Org Biomol Chem 2016; 14:5525-8. [DOI: 10.1039/c6ob00108d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Brønsted acid-catalyzed addition of 2-alkylazaarenes to in situ generated N-sulfonylimines through selective C(sp3)–H bond functionalization has been developed.
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Affiliation(s)
- T. Beisel
- Department of Organic Chemistry and Chemical Biology
- Goethe-University Frankfurt
- 60438 Frankfurt am Main
- Germany
| | - J. Kirchner
- Department of Organic Chemistry and Chemical Biology
- Goethe-University Frankfurt
- 60438 Frankfurt am Main
- Germany
| | - T. Kaehler
- Department of Organic Chemistry and Chemical Biology
- Goethe-University Frankfurt
- 60438 Frankfurt am Main
- Germany
| | - J. Knauer
- Department of Organic Chemistry and Chemical Biology
- Goethe-University Frankfurt
- 60438 Frankfurt am Main
- Germany
| | - Y. Soltani
- Department of Organic Chemistry and Chemical Biology
- Goethe-University Frankfurt
- 60438 Frankfurt am Main
- Germany
| | - G. Manolikakes
- Department of Organic Chemistry and Chemical Biology
- Goethe-University Frankfurt
- 60438 Frankfurt am Main
- Germany
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19
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Yaragorla S, Singh G, Dada R. C(sp3)–H functionalization of methyl azaarenes: a calcium-catalyzed facile synthesis of (E)-2-styryl azaarenes and 2-aryl-1,3-bisazaarenes. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.035] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Direct addition of 2-methylazines to aryl glyoxals for the synthesis of α-hydroxy ketones. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.07.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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21
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Konovalova VV, Shklyaev YV, Maslivets AN. Reaction of 3-aroylpyrrolo[1,2-a]quinoxaline-1,2,4(5H)-triones with quinaldine and substituted quinoxalines. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2015. [DOI: 10.1134/s1070428015050176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Lu B, Lu Q, Zhuang S, Cheng J, Huang B. Bi(OTf)3-catalyzed C–H bond functionalization of azaarenes for the facile access to oxindoles featuring quaternary carbon centers. RSC Adv 2015. [DOI: 10.1039/c4ra14144j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bi(OTf)3-catalyzed sp3 C–H functionalization of 2-alkyl azaarenes to isatylidene malononitriles has been achieved to give oxindoles containing an all-carbon quaternary center.
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Affiliation(s)
- Beili Lu
- College of Material Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- P. R. China
| | - Qilin Lu
- College of Material Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- P. R. China
| | - Senyang Zhuang
- College of Material Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- P. R. China
| | - Jiajia Cheng
- College of Chemistry
- Fuzhou University
- Fuzhou 350116
- P. R. China
| | - Biao Huang
- College of Material Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- P. R. China
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23
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Satish Kumar N, Chandrasekhara Rao L, Jagadeesh Babu N, Meshram HM. A domino green method for the rapid synthesis of novel fused isoquinoline derivatives via Knoevenagel/Michael/cyclization reactions on aqueous media and their photophysical properties. RSC Adv 2015. [DOI: 10.1039/c5ra15948b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An expedient, eco-friendly and green-protocol has been developed for the synthesis of novel 4-imino-2-aryl-4H-pyrido[2,1-a]isoquinoline-3-carbonitrile derivatives via Knoevenagel/Michael/cyclisation reactions in one pot under catalyst-free conditions on aqueous media.
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Affiliation(s)
- Nandigama Satish Kumar
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | - L. Chandrasekhara Rao
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | - N. Jagadeesh Babu
- Laboratory of X-ray Crystallography
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | - H. M. Meshram
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
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24
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Vanjari R, Singh KN. Utilization of methylarenes as versatile building blocks in organic synthesis. Chem Soc Rev 2015; 44:8062-96. [DOI: 10.1039/c5cs00003c] [Citation(s) in RCA: 135] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review attempts to describe the latest developments in the utilisation of methylarenes adopting C–H functionalization strategies and covers all the developments until March 2015.
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Affiliation(s)
- Rajeshwer Vanjari
- Department of Chemistry (Centre of Advanced Study)
- Faculty of Science
- Banaras Hindu University
- Varanasi-221005
- India
| | - Krishna Nand Singh
- Department of Chemistry (Centre of Advanced Study)
- Faculty of Science
- Banaras Hindu University
- Varanasi-221005
- India
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25
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Xu L, Shao Z, Wang L, Zhao H, Xiao J. Catalyst-free synthesis of (E)-2-alkenylquinoline derivatives via C(sp3)-H functionalization of 2-methylquinolines. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.10.079] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Chatterjee S, Bhattacharjee P, Temburu J, Nandi D, Jaisankar P. Indium trichloride catalyzed sp3 C–H bond functionalization of 2-alkyl azaarenes under microwave irradiation. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.10.058] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Zhu ZQ, Bai P, Huang ZZ. Dehydrogenative Cross-Coupling Reaction by Cooperative Transition-Metal and Brønsted Acid Catalysis for the Synthesis of β-Quinolinyl α-Amino Acid Esters. Org Lett 2014; 16:4881-3. [DOI: 10.1021/ol502402s] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Zhi-Qiang Zhu
- Department
of Chemistry, Zhejiang University, Hangzhou, 310028, P. R. China
| | - Peng Bai
- Department
of Chemistry, Zhejiang University, Hangzhou, 310028, P. R. China
| | - Zhi-Zhen Huang
- Department
of Chemistry, Zhejiang University, Hangzhou, 310028, P. R. China
- State
Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
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28
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Gao X, Zhang F, Deng G, Yang L. Brønsted Acid Catalyzed Benzylic C–H Bond Functionalization of Azaarenes: Nucleophilic Addition to Nitroso Compounds. Org Lett 2014; 16:3664-7. [DOI: 10.1021/ol501422k] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Xu Gao
- Key
Laboratory for Environmentally Friendly Chemistry and Application
of the Ministry of Education, College of Chemistry, Xiangtan University, Hunan 411105, China
| | - Feng Zhang
- College
of Science, Hunan Agricultural University, Hunan 410128, China
| | - Guojun Deng
- Key
Laboratory for Environmentally Friendly Chemistry and Application
of the Ministry of Education, College of Chemistry, Xiangtan University, Hunan 411105, China
| | - Luo Yang
- Key
Laboratory for Environmentally Friendly Chemistry and Application
of the Ministry of Education, College of Chemistry, Xiangtan University, Hunan 411105, China
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29
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Iron-catalyzed C(sp3)–H functionalization of methyl azaarenes with α-oxoesters: a facile approach to lactic acid derivatives. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.02.069] [Citation(s) in RCA: 18] [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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30
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Mao D, Hong G, Wu S, Liu X, Yu J, Wang L. Lewis-Acid-Catalyzed Benzylic Reactions of 2-Methylazaarenes with Aldehydes. European J Org Chem 2014. [DOI: 10.1002/ejoc.201400073] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Pi D, Jiang K, Zhou H, Sui Y, Uozumi Y, Zou K. Iron-catalyzed C(sp3)–H functionalization of methyl azaarenes: a green approach to azaarene-substituted α- or β-hydroxy carboxylic derivatives and 2-alkenylazaarenes. RSC Adv 2014. [DOI: 10.1039/c4ra10939b] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An iron-catalyzed C(sp3)–H functionalization of methyl azaarenes with carbonyls to access the title compounds have been described.
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Affiliation(s)
- Danwei Pi
- Hubei Key Laboratory of Natural Products Research and Development
- College of Biological and Pharmaceutical Sciences
- China Three Gorges University
- Yichang 443002, People's Republic of China
| | - Kun Jiang
- Hubei Key Laboratory of Natural Products Research and Development
- College of Biological and Pharmaceutical Sciences
- China Three Gorges University
- Yichang 443002, People's Republic of China
| | - Haifeng Zhou
- Hubei Key Laboratory of Natural Products Research and Development
- College of Biological and Pharmaceutical Sciences
- China Three Gorges University
- Yichang 443002, People's Republic of China
- Institute for Molecular Science
| | - Yuebo Sui
- Hubei Key Laboratory of Natural Products Research and Development
- College of Biological and Pharmaceutical Sciences
- China Three Gorges University
- Yichang 443002, People's Republic of China
| | - Yasuhiro Uozumi
- Hubei Key Laboratory of Natural Products Research and Development
- College of Biological and Pharmaceutical Sciences
- China Three Gorges University
- Yichang 443002, People's Republic of China
- Institute for Molecular Science
| | - Kun Zou
- Hubei Key Laboratory of Natural Products Research and Development
- College of Biological and Pharmaceutical Sciences
- China Three Gorges University
- Yichang 443002, People's Republic of China
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Kumari K, Allam BK, Singh KN. A simple and sustainable tetrabutylammonium fluoride (TBAF)-catalyzed synthesis of azaarene-substituted 3-hydroxy-2-oxindoles through sp3 C–H functionalization. RSC Adv 2014. [DOI: 10.1039/c3ra47332e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
A green, practical, and metal-free protocol for direct addition of α-and γ-alkylazaarenes to isatins has been developed for the synthesis of biologically important azaarene-substituted 3-hydroxy-2-oxindoles in good to excellent yields.
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Affiliation(s)
- Kumkum Kumari
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi 221005, India
| | - Bharat Kumar Allam
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi 221005, India
| | - Krishna Nand Singh
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi 221005, India
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