1
|
Ishwar Bhat S. One‐Pot Construction of Bis‐Heterocycles through Isocyanide Based Multicomponent Reactions. ChemistrySelect 2020. [DOI: 10.1002/slct.202002154] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Subrahmanya Ishwar Bhat
- Department of Chemistry N. M. A. M. Institute of Technology, (Visvesvaraya Technological University, Belagavi) Nitte 574110, Udupi District Karnataka India
| |
Collapse
|
2
|
Gorbulenko N, Shokol T, Khilya V. 3-Thienyl/benzothienylchromones. Synthesis and properties. FRENCH-UKRAINIAN JOURNAL OF CHEMISTRY 2020. [DOI: 10.17721/fujcv8i1p174-183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This mini-review for the first time summarizes and systematizes all the data available in the literature on the synthesis and properties of 3-thienyl/benzothienylchromones, starting from 1960. Two main approaches to the formation of target structures are presented. The conditions of cyclization reactions, oxidative rearrangement, transition metals catalyzed CH activation and annulation reactions, etc. are discussed. Testing data for some types of biological activity of a number of the 3-thienyl/benzothienylchromones and the products of their transformation into the pyrazole cycle are given.
Collapse
|
3
|
Frett B, McConnell N, Kharbanda A, Naresh G, Rounseville B, Warner C, Chang J, Debolske N, Li HY. Selective, C-3 Friedel-Crafts acylation to generate functionally diverse, acetylated Imidazo[1,2- a]pyridine derivatives. Tetrahedron 2018; 74:4592-4600. [PMID: 30344351 PMCID: PMC6192254 DOI: 10.1016/j.tet.2018.07.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Carbon-carbon bonds are integral for pharmaceutical discovery and development. Frequently, C-C bond reactions utilize expensive catalyst/ligand combinations and/or are low yielding, which can increase time and expenditures in pharmaceutical development. To enhance C-C bond formation protocols, we developed a highly efficient, selective, and combinatorially applicable Friedel-Crafts acylation to acetylate the C-3 position of imidazo[1,2-a]pyridines. The reaction, catalyzed by aluminum chloride, is both cost effective and more combinatorial friendly compared to acetylation reactions requiring multiple, stoichiometric equivalents of AlCl3. The protocol has broad application in the construction of acetylated imidazo[1,2-a]pyridines with an extensive substrate scope. All starting materials are common and the reaction requires inexpensive, conventional heating methods for adaptation in any laboratory. Further, the synthesized compounds are predicted to possess GABA activity through a validated, GABA binding model. The developed method serves as a superior route to generate C-3 acetylated imidazo[1,2-a]pyridine building-blocks for combinatorial synthetic efforts.
Collapse
Affiliation(s)
- Brendan Frett
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Nicholas McConnell
- College of Pharmacy, Department of Pharmacology and Toxicology, The University of Arizona, 1703 E. Mabel, Tucson, AZ 85721, USA
| | - Anupreet Kharbanda
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Gunaganti Naresh
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Benjamin Rounseville
- College of Pharmacy, Department of Pharmacology and Toxicology, The University of Arizona, 1703 E. Mabel, Tucson, AZ 85721, USA
| | - Christina Warner
- College of Pharmacy, Department of Pharmacology and Toxicology, The University of Arizona, 1703 E. Mabel, Tucson, AZ 85721, USA
| | - John Chang
- College of Pharmacy, Department of Pharmacology and Toxicology, The University of Arizona, 1703 E. Mabel, Tucson, AZ 85721, USA
| | - Natalie Debolske
- College of Pharmacy, Department of Pharmacology and Toxicology, The University of Arizona, 1703 E. Mabel, Tucson, AZ 85721, USA
| | - Hong-yu Li
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| |
Collapse
|
4
|
Manvar P, Shaikh F, Kakadiya R, Mehariya K, Khunt R, Pandey B, Shah A. Synthesis of novel imidazo[1,2-a]pyridine-4-hydroxy-2H-coumarins by Groebke–Blackburn–Bienaymé multicomponent reaction as potential NS5B inhibitors. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.01.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
5
|
He XX, Li YF, Huang J, Shen DS, Liu FS. A convenient phosphine-free palladium-catalyzed direct arylation of thiazole under mild aerobic conditions. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2015.12.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
6
|
Yadav M, Dara S, Saikam V, Kumar M, Aithagani SK, Paul S, Vishwakarma RA, Singh PP. Regioselective Oxidative C-H Phosphonation of Imidazo[1,2-a]pyridines and Related Heteroarenes Mediated by Manganese(III) Acetate. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500984] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
7
|
Abstract
The direct coupling of 3-iodochromen-4-ones with heteroaromatics has been achieved via a photochemical reaction. A variety of 3-heteroarylchromones was obtained in moderate to good yields from the corresponding 3-iodochromen-4-ones and heteroaromatics, such as pyrrole, furan, thiophene, and benzofuran. The reaction worked smoothly in acetonitrile under a mercury lamp without any additives, providing a catalyst- and base-free approach for the synthesis of 3-heteroarylchromones.
Collapse
Affiliation(s)
- Qian Yang
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, People's Republic of China.,School of Sciences, Xi'an University of Technology, Xi'an, 710054, People's Republic of China
| | - Yun He
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, People's Republic of China
| | - Tao Wang
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, People's Republic of China
| | - Lingyu Zeng
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, People's Republic of China
| | - Zunting Zhang
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, People's Republic of China.
| |
Collapse
|
8
|
Vellakkaran M, Lingayya R, Naveen Kumar B, Nagaiah K, Poornachandra Y, Ganesh Kumar C. Palladium(0)-catalyzed direct C–H hetero-arylation of 2-arylimidazo [1,2-a]pyridines with (E)-1-(5-bromothiophen-2-yl)-3-arylprop-2-en-1-ones and their anticancer activity. RSC Adv 2015. [DOI: 10.1039/c5ra15078g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
An efficient palladium(0)-catalyzed direct hetero-arylation of imidazo[1,2-a]pyridines at the C-3 position of the imidazole ring has been described.
Collapse
Affiliation(s)
- Mari Vellakkaran
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Rajaka Lingayya
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Bejjanki Naveen Kumar
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Kommu Nagaiah
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Y. Poornachandra
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - C. Ganesh Kumar
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| |
Collapse
|
9
|
Synthesis of imidazo[1,2-a]pyridin-chromones by a MW assisted Groebke–Blackburn–Bienaymé process. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.11.047] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
10
|
Ji XM, Wei L, Chen F, Tang RY. Direct trifluoromethylation of imidazoheterocycles in a recyclable medium at room temperature. RSC Adv 2015. [DOI: 10.1039/c5ra02888d] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Regioselective C–H trifluoromethylation of imidazoheterocycles with Langlois' reagent in a recyclable mixed medium of 1-butyl-3-methylimidazoliumtetrafluoroborate ([Bmim]BF4) and water at room temperature has been developed.
Collapse
Affiliation(s)
- Xiao-Ming Ji
- Department of Applied Chemistry, College of Material and Energy
- South China Agricultural University
- Guangzhou 510642
- China
- College of Chemistry and Materials Engineering
| | - Liang Wei
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Fan Chen
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Ri-Yuan Tang
- Department of Applied Chemistry, College of Material and Energy
- South China Agricultural University
- Guangzhou 510642
- China
- College of Chemistry and Materials Engineering
| |
Collapse
|
11
|
Koubachi J, El Kazzouli S, Bousmina M, Guillaumet G. Functionalization of Imidazo[1,2-a]pyridines by Means of Metal-Catalyzed Cross-Coupling Reactions. European J Org Chem 2014. [DOI: 10.1002/ejoc.201400065] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
12
|
Rossi R, Bellina F, Lessi M, Manzini C. Cross-Coupling of Heteroarenes by CH Functionalization: Recent Progress towards Direct Arylation and Heteroarylation Reactions Involving Heteroarenes Containing One Heteroatom. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300922] [Citation(s) in RCA: 366] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
13
|
Bruneau A, Brion JD, Messaoudi S, Alami M. A general Pd/Cu-catalyzed C–H heteroarylation of 3-bromoquinolin-2(1H)-ones. Org Biomol Chem 2014; 12:8533-41. [DOI: 10.1039/c4ob01610f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Pd(OAc)2/CuI system effectively catalyzes the coupling of 3-bromoquinolin-2(1H)-ones with a series of azoles to give 3-(heteroaryl)quinolin-2(1H)-ones in good yields.
Collapse
Affiliation(s)
- Alexandre Bruneau
- Univ Paris-Sud
- CNRS
- BioCIS-UMR 8076
- Laboratoire de Chimie Thérapeutique
- Equipe Labellisée Ligue Contre le Cancer
| | - Jean-Daniel Brion
- Univ Paris-Sud
- CNRS
- BioCIS-UMR 8076
- Laboratoire de Chimie Thérapeutique
- Equipe Labellisée Ligue Contre le Cancer
| | - Samir Messaoudi
- Univ Paris-Sud
- CNRS
- BioCIS-UMR 8076
- Laboratoire de Chimie Thérapeutique
- Equipe Labellisée Ligue Contre le Cancer
| | - Mouad Alami
- Univ Paris-Sud
- CNRS
- BioCIS-UMR 8076
- Laboratoire de Chimie Thérapeutique
- Equipe Labellisée Ligue Contre le Cancer
| |
Collapse
|