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Ramana Reddy M, Darapaneni CM, Patil RD, Kumari H. Recent synthetic methodologies for imidazo[1,5- a]pyridines and related heterocycles. Org Biomol Chem 2022; 20:3440-3468. [PMID: 35394477 DOI: 10.1039/d2ob00386d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Imidazo[1,5-a]pyridine is a significant structural component of a large number of agrochemicals and pharmaceuticals. The synthesis of imidazo[1,5-a]pyridine has been a subject of intense research for numerous decades. A large number of transformations are now available to conveniently access imidazo[1,5-a]pyridine from readily available starting materials. This review details the recent development in imidazo[1,5-a]pyridine construction involving cyclocondensation, cycloaddition, oxidative cyclization, and transannulation reactions.
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Affiliation(s)
- Mittapalli Ramana Reddy
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio, USA, 45267-0514.
| | | | - Rajendra D Patil
- School of Chemical Sciences, Moolji Jaitha College, Jalgaon, Maharashratra, India, 425001
| | - Harshita Kumari
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio, USA, 45267-0514.
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2
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Giovanetti MD, Bitencourt LFF, Cormanich R, Sauer SPA. On the Unexpected Accuracy of the M06L Functional in the Calculation of 1JFC Spin-Spin Coupling Constants. J Chem Theory Comput 2021; 17:7712-7723. [PMID: 34751577 DOI: 10.1021/acs.jctc.1c00287] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
One-bond spin-spin coupling constants (SSCCs) between F and C are computed with density functional theory (DFT). Surprisingly, M06L stands out for its striking accuracy, outperforming any other investigated functional, including PBE0, otherwise considered one of the most reliable for couplings involving F. Although the computation of nuclear magnetic resonance (NMR) parameters involving F is known to be a challenging task, even with a rather small basis set as pcJ-1, M06L provides results with a MAD = 11.7 Hz, whereas the average deviation gets as much as 5 times larger for PBE0 (MAD = 60.0 Hz). In the context of SSCCs on the order of 300 Hz, this is particularly remarkable. We find that the accuracy of M06L/pcJ-1 in predicting 1JFC constants does not stem from a well-suited exchange or correlation part of the functional. Instead, it is believed to arise from a fortuitous cancellation of errors, as revealed by investigating the convergence of the basis set. Our findings also indicate that 1JFC constants are highly dependent on the amount of exact exchange included in the expression of the functional, with large fractions being critically important to achieving satisfactory results. Studying the effects of the geometry on 1JFC, we find that optimizing the geometry at the level of theory used to calculate SSCCs generally improves the quality of the results, although the combination of a M06-2X/aug-cc-pVTZ geometry with M06L/pcJ-1 1JFC constants best reproduces the experimental data for organofluorine compounds (with the exception of fluoroalkenes).
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Affiliation(s)
- Marinella de Giovanetti
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | | | - Rodrigo Cormanich
- Chemistry Institute, State University of Campinas, P.O. Box 6154, 13083-970 Campinas, SP, Brazil
| | - Stephan P A Sauer
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
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3
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Kotovshchikov YN, Voloshkin VA, Latyshev GV, Lukashev NV, Beletskaya IP. Cascade Transformations of [1,2,3]Triazolo[1,5-a]pyridines as Convenient Precursors of Diazo Compounds and Metal Carbenes. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021080029] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Wang T, Tang Z, Luo H, Tian Y, Xu M, Lu Q, Li B. Access to ( Z)-β-Substituted Enamides from N1-H-1,2,3-Triazoles. Org Lett 2021; 23:6293-6298. [PMID: 34346679 DOI: 10.1021/acs.orglett.1c02087] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A direct ring-opening/nucleophilic substitution reaction of N1-H-1,2,3-triazoles has been described. Divergent (Z)-β-halogen- or sulfonyl-substituted enamides could be stereospecifically synthesized in a tunable manner. This strategy might not only enable a new ring-opening method of N1-H-1,2,3-triazoles under nonmetal catalysis and mild reaction conditions but also offer a good opportunity to reliably access versatile (Z)-β-substituted enamides that could be used as synthetic precursors for further synthetic transformations.
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Affiliation(s)
- Tao Wang
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, People's Republic of China
| | - Zongyuan Tang
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, People's Republic of China
| | - Han Luo
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, People's Republic of China
| | - Yi Tian
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, People's Republic of China
| | - Mingchuan Xu
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, People's Republic of China
| | - Qixing Lu
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, People's Republic of China
| | - Baosheng Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, People's Republic of China
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5
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Opsomer T, Van Hoof M, D’Angelo A, Dehaen W. 1,2,3-Triazole-Mediated Synthesis of 1-Methyleneisoquinolines: A Three-Step Synthesis of Papaverine and Analogues. Org Lett 2020; 22:3596-3600. [DOI: 10.1021/acs.orglett.0c01069] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Tomas Opsomer
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Max Van Hoof
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Andrea D’Angelo
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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6
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Su H, Bao M, Pei C, Hu W, Qiu L, Xu X. Gold-catalyzed dual annulation of azide-tethered alkynes with nitriles: expeditious synthesis of oxazolo[4,5-c]quinolines. Org Chem Front 2019. [DOI: 10.1039/c9qo00568d] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A gold-catalyzed dual annulation of azide-tethered internal alkynes, which provides convenient access to quinoline derivatives, has been reported.
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Affiliation(s)
- Han Su
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Ming Bao
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Chao Pei
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Wenhao Hu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Lihua Qiu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Xinfang Xu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
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7
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Zhang GT, Zhang J, Xu YJ, Dong L. Metal-Free [3+2] Tandem Cyclization Synthesis of Unique 11H
-Pyrido[3′,2′:4,5]Pyrrolo[3,2-b
]Indolizine from 7-Azaindoles and Pyridotriazoles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800764] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Guo-Tai Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry; West China School of Pharmacy; Sichuan University; 610041 Chengdu China
| | - Jing Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry; West China School of Pharmacy; Sichuan University; 610041 Chengdu China
| | - Yan-Jun Xu
- Xinjiang Technical Institute of Physics & Chemistry; Chinese Academy of Sciences; 830011 Urumqi China
| | - Lin Dong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry; West China School of Pharmacy; Sichuan University; 610041 Chengdu China
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Kotovshchikov YN, Latyshev GV, Navasardyan MA, Erzunov DA, Beletskaya IP, Lukashev NV. Annulation-Induced Cascade Transformation of 5-Iodo-1,2,3-triazoles to 2-(1-Aminoalkyl)benzoxazoles. Org Lett 2018; 20:4467-4470. [PMID: 30040429 DOI: 10.1021/acs.orglett.8b01755] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Base-mediated cyclization of (5-iodo-1,2,3-triazolyl)phenols was proposed as a new synthetic strategy for the in situ generation of diazoimines via electrocyclic ring opening of the fused heterocycle. Cu-catalyzed amination of the intermediate diazoalkanes was employed to develop an efficient cascade approach to functionalized benzoxazoles.
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Affiliation(s)
- Yury N Kotovshchikov
- Chemistry Department , M. V. Lomonosov Moscow State University , 1/3 Leninskiye Gory , Moscow 119991 , Russia
| | - Gennadij V Latyshev
- Chemistry Department , M. V. Lomonosov Moscow State University , 1/3 Leninskiye Gory , Moscow 119991 , Russia
| | - Mger A Navasardyan
- Chemistry Department , M. V. Lomonosov Moscow State University , 1/3 Leninskiye Gory , Moscow 119991 , Russia
| | - Dmitry A Erzunov
- Chemistry Department , M. V. Lomonosov Moscow State University , 1/3 Leninskiye Gory , Moscow 119991 , Russia
| | - Irina P Beletskaya
- Chemistry Department , M. V. Lomonosov Moscow State University , 1/3 Leninskiye Gory , Moscow 119991 , Russia
| | - Nikolay V Lukashev
- Chemistry Department , M. V. Lomonosov Moscow State University , 1/3 Leninskiye Gory , Moscow 119991 , Russia
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9
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Xu ZF, Dai H, Shan L, Li CY. Metal-Free Synthesis of (E)-Monofluoroenamine from 1-Sulfonyl-1,2,3-triazole and Et 2O·BF 3 via Stereospecific Fluorination of α-Diazoimine. Org Lett 2018; 20:1054-1057. [PMID: 29400973 DOI: 10.1021/acs.orglett.7b04014] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A general, stereospecific, and straightforward method for the rapid preparation of functionalized (E)-monofluoroenamines is reported. Rather than transition metals (Rh, Ni, Pd, Cu, Ag, etc.), Et2O·BF3 was employed to promote the formation of α-diazoimine through the Dimroth equilibrium of common 1-sulfonyl-1,2,3-triazole for the first time. An overall migration of fluoride from boron to the diazo-linked carbon of α-diazoimine was achieved. Derivations and late-stage modification of bioactive molecule were conducted. A plausible mechanism was also proposed.
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Affiliation(s)
- Ze-Feng Xu
- Department of Chemistry, Zhejiang Sci-Tech University , Xiasha West Higher Education District, Hangzhou, 310018, China
| | - Haican Dai
- Department of Chemistry, Zhejiang Sci-Tech University , Xiasha West Higher Education District, Hangzhou, 310018, China
| | - Lihong Shan
- Department of Chemistry, Zhejiang Sci-Tech University , Xiasha West Higher Education District, Hangzhou, 310018, China
| | - Chuan-Ying Li
- Department of Chemistry, Zhejiang Sci-Tech University , Xiasha West Higher Education District, Hangzhou, 310018, China
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10
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Yang D, Shan L, Xu ZF, Li CY. Metal-free synthesis of imidazole by BF3·Et2O promoted denitrogenative transannulation of N-sulfonyl-1,2,3-triazole. Org Biomol Chem 2018; 16:1461-1464. [DOI: 10.1039/c8ob00083b] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first BF3·Et2O promoted metal-free denitrogenative transannulation of N-sulfonyl-1,2,3-triazole was reported, leading to the synthesis of functionalized imidazoles with a broad scope.
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Affiliation(s)
- Dongdong Yang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Lihong Shan
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Ze-Feng Xu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Chuan-Ying Li
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- China
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11
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Joshi A, Mohan DC, Adimurthy S. Lewis Acid-Catalyzed Denitrogenative Transannulation of Pyridotriazoles with Nitriles: Synthesis of Imidazopyridines. J Org Chem 2016; 81:9461-9469. [PMID: 27681075 DOI: 10.1021/acs.joc.6b01742] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The synthesis of imidazo[1,5-a]pyridines through denitrogenative transannulation of pyridotriazoles with nitriles using BF3·Et2O as catalyst has been described. The combination of solvents (dichlorobenzene-dichloroethane) plays a crucial role in achieving quantitative yields of desired products under metal-free conditions.
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Affiliation(s)
- Abhisek Joshi
- Academy of Scientific & Innovative Research , Central Salt & Marine Chemicals Research Institute (CSIR), G.B. Marg, Bhavnagar, 364 002 Gujarat, India
| | - Darapaneni Chandra Mohan
- Academy of Scientific & Innovative Research , Central Salt & Marine Chemicals Research Institute (CSIR), G.B. Marg, Bhavnagar, 364 002 Gujarat, India
| | - Subbarayappa Adimurthy
- Academy of Scientific & Innovative Research , Central Salt & Marine Chemicals Research Institute (CSIR), G.B. Marg, Bhavnagar, 364 002 Gujarat, India
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12
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Pankajakshan S, Ang WL, Sreejith S, Stuparu MC, Loh TP. Aerobic Copper Catalysis for Tandem Oxy-N-alkenylation of [1,2,3]Triazolo[1,5-a]pyridines. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600580] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Sreekumar Pankajakshan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371
| | - Wei Li Ang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371
| | - Sivarampanicker Sreejith
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371
| | - Mihaiela Corina Stuparu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371
| | - Teck-Peng Loh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371
- Department of Chemistry; University of Science and Technology of China; Hefei, Anhui 230026 People's Republic of China
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