1
|
A Brief Review: Advancement in the Synthesis of Amine through the Leuckart Reaction. REACTIONS 2023. [DOI: 10.3390/reactions4010007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
This review presents a summary of reactions that take place during the “Leuckart-type reaction”. The significance of, as well as recent advancements in, the synthesis of amines through simple and inexpensive methods using readily available raw materials is discussed. This review includes all catalytic and noncatalytic reactions that involve the Leuckart method. Recent studies have shown that at least a quarter of C–N bond-forming reactions in the pharmaceutical industry are occur with the support of reductive amination. Recently, experimental conditions have achieved excellent yields. The “Leuckart-type reaction” is technically associated with Eschweiler–Clarke methylation. Compounds are grouped in accordance with the precept of action. This includes drugs affecting the central nervous system, cardiovascular system and gastrointestinal tract; anticancer drugs, antibiotics, antiviral and antifungal drugs; drugs affecting anxiety; convulsant, biotic, and HIV drugs; and antidiabetic drugs. Therefore, this review supports the development of the Leuckart-type preparation of nitrogenous compounds, as well as their advancement in other areas of human development.
Collapse
|
2
|
Saini P, Bari SS, Yadav P, Khullar S, Mandal SK, Bhalla A. Synthesis of
C2
‐Formamide(thiophene)pyrazolyl‐
C4
’‐carbaldehyde and their Transformation to Schiff's Bases and Stereoselective
trans
‐β‐Lactams: Mechanistic and Theoretical Insights. ChemistrySelect 2022. [DOI: 10.1002/slct.202202172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Preety Saini
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Shamsher S. Bari
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Pooja Yadav
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Sadhika Khullar
- Department of Chemistry Dr. B. R. Ambedkar National Institute of Technology Jalandhar 144011 Punjab India
| | - Sanjay K. Mandal
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali 140306 Punjab India
| | - Aman Bhalla
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
| |
Collapse
|
3
|
Sadhukhan S, Mondal S, Baire B. An unexpected Formation of 2‐Arylbenzimidazoles from α,α‐diiodo‐α’‐acetoxyketones and o‐Phenylenediamines. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | | | - Beeraiah Baire
- Indian Institute of Technology, Madras Chemistry CY 209C, Department of ChemsitryIIT Madras, AdyarChennaiIndia 600036 Chennai INDIA
| |
Collapse
|
4
|
Tan JF, Bormann CT, Severin K, Cramer N. Chemo- and regio-divergent access to fluorinated 1-alkyl and 1-acyl triazenes from alkynyl triazenes. Chem Sci 2022; 13:3409-3415. [PMID: 35432853 PMCID: PMC8943902 DOI: 10.1039/d2sc00294a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/08/2022] [Indexed: 11/21/2022] Open
Abstract
The 1,1,2,2-tetrafluoroethylene unit is a prevalent pattern in bioactive molecules and functional materials. Despite being in principle a straightforward strategy to access this motif, the direct tetrafluorination of alkynes involves...
Collapse
Affiliation(s)
- Jin-Fay Tan
- Laboratory of Asymmetric Catalysis and Synthesis, EPFL SB ISIC LCSA, BCH 4305 CH-1015 Lausanne Switzerland
| | - Carl Thomas Bormann
- Laboratory of Supramolecular Chemistry, EPFL SB ISIC LCS, BCH 3307 CH-1015 Lausanne Switzerland
| | - Kay Severin
- Laboratory of Supramolecular Chemistry, EPFL SB ISIC LCS, BCH 3307 CH-1015 Lausanne Switzerland
| | - Nicolai Cramer
- Laboratory of Asymmetric Catalysis and Synthesis, EPFL SB ISIC LCSA, BCH 4305 CH-1015 Lausanne Switzerland
| |
Collapse
|
5
|
Saglam MF, Gündogdu A, Hora M, Kandemir H, Sengul IF. Synthesis of pyrrolo[3,2-c]carbazole-2-carbohydrazides and pyrrolo[3,2-c]carbazol-2-yl-1,3,4-oxadiazoles and their in vitro antibacterial evaluation. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1966040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Mehmet F. Saglam
- Department of Chemistry, Faculty of Science, Gebze Technical University, Kocaeli, Turkey
| | - Aycan Gündogdu
- Department of Microbiology and Clinical Microbiology, Erciyes University School of Medicine, Kayseri, Turkey
- Genome and Stem Cell Center (GenKok), Erciyes University, Kayseri, Turkey
| | - Mehmet Hora
- Genome and Stem Cell Center (GenKok), Erciyes University, Kayseri, Turkey
| | - Hakan Kandemir
- Department of Chemistry, Faculty of Art and Science, Tekirdag Namık Kemal University, Tekirdag, Turkey
| | - Ibrahim F. Sengul
- Department of Chemistry, Faculty of Science, Gebze Technical University, Kocaeli, Turkey
| |
Collapse
|
6
|
Subbaiah MAM, Meanwell NA. Bioisosteres of the Phenyl Ring: Recent Strategic Applications in Lead Optimization and Drug Design. J Med Chem 2021; 64:14046-14128. [PMID: 34591488 DOI: 10.1021/acs.jmedchem.1c01215] [Citation(s) in RCA: 168] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The benzene moiety is the most prevalent ring system in marketed drugs, underscoring its historic popularity in drug design either as a pharmacophore or as a scaffold that projects pharmacophoric elements. However, introspective analyses of medicinal chemistry practices at the beginning of the 21st century highlighted the indiscriminate deployment of phenyl rings as an important contributor to the poor physicochemical properties of advanced molecules, which limited their prospects of being developed into effective drugs. This Perspective deliberates on the design and applications of bioisosteric replacements for a phenyl ring that have provided practical solutions to a range of developability problems frequently encountered in lead optimization campaigns. While the effect of phenyl ring replacements on compound properties is contextual in nature, bioisosteric substitution can lead to enhanced potency, solubility, and metabolic stability while reducing lipophilicity, plasma protein binding, phospholipidosis potential, and inhibition of cytochrome P450 enzymes and the hERG channel.
Collapse
Affiliation(s)
- Murugaiah A M Subbaiah
- Department of Medicinal Chemistry, Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore, Karnataka 560099, India
| | - Nicholas A Meanwell
- Department of Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, P.O. Box 4000, Princeton, New Jersey 08543-4000, United States
| |
Collapse
|
7
|
Bhattacharjee S, Laru S, Ghosh P, Hajra A. Potassium Persulfate Mediated Chemodivergent C-3 Functionalization of 2 H-Indazoles with DMSO as C 1 Source. J Org Chem 2021; 86:10866-10873. [PMID: 34286979 DOI: 10.1021/acs.joc.1c01188] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A facile, efficient, and transition-metal-free chemodivergent C-3 functionalization of 2H-indazoles was developed under aerobic conditions using carboxylic acid and DMSO as the combined source of the carboxylic acid ester group and DMSO as the formylating agent. A series of formylated indazoles and carboxylic acid esters of indazole derivatives were produced in moderate to excellent yields. The mechanistic studies suggest that the reactions probably proceed through a radical pathway.
Collapse
Affiliation(s)
- Suvam Bhattacharjee
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Sudip Laru
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Payel Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| |
Collapse
|
8
|
Abstract
An efficient, simple, and metal-free fluorination of 2H-indazoles has been developed using N-fluorobenzenesulfonimide (NFSI) in water under ambient air. This transformation provides direct access to fluorinated indazole derivatives with broad functionalities in satisfactory yields. The experimental results suggest a radical mechanistic pathway of this protocol.
Collapse
Affiliation(s)
- Payel Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| |
Collapse
|
9
|
N,N‐ and N,O‐6‐membered Ring
peri
‐Annelation in Naphthalene. Is it a Heteroring or merely a
peri
‐ Heterobridge? ChemistrySelect 2021. [DOI: 10.1002/slct.202004237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
10
|
Khan I, Ibrar A, Zaib S. Alkynoates as Versatile and Powerful Chemical Tools for the Rapid Assembly of Diverse Heterocycles under Transition-Metal Catalysis: Recent Developments and Challenges. Top Curr Chem (Cham) 2021; 379:3. [PMID: 33398642 DOI: 10.1007/s41061-020-00316-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/16/2020] [Indexed: 12/15/2022]
Abstract
Heterocycles, heteroaromatics and spirocyclic entities are ubiquitous components of a wide plethora of synthetic drugs, biologically active natural products, marketed pharmaceuticals and agrochemical targets. Recognizing their high proportion in drugs and rich pharmacological potential, these invaluable structural motifs have garnered significant interest, thus enabling the development of efficient catalytic methodologies providing access to architecturally complex and diverse molecules with high atom-economy and low cost. These chemical processes not only allow the formation of diverse heterocycles but also utilize a range of flexible and easily accessible building units in a single operation to discover diversity-oriented synthetic approaches. Alkynoates are significantly important, diverse and powerful building blocks in organic chemistry due to their unique and inherent properties such as the electronic bias on carbon-carbon triple bonds posed by electron-withdrawing groups or the metallic coordination site provided by carbonyl groups. The present review highlights the comprehensive picture of the utility of alkynoates (2007-2019) for the synthesis of various heterocycles (> 50 types) using transition-metal catalysts (Ru, Rh, Pd, Ir, Ag, Au, Pt, Cu, Mn, Fe) in various forms. The valuable function of versatile alkynoates (bearing multifunctional groups) as simple and useful starting materials is explored, thus cyclizing with an array of coupling partners to deliver a broad range of oxygen-, nitrogen-, sulfur-containing heterocycles alongside fused-, and spiro-heterocyclic compounds. In addition, these examples will also focus the scope and reaction limitations, as well as mechanistic investigations into the synthesis of these heterocycles. The biological significance will also be discussed, citing relevant examples of drug molecules highlighting each class of heterocycles. This review summarizes the recent developments in the synthetic methods for the synthesis of various heterocycles using alkynoates as readily available starting materials under transition-metal catalysis.
Collapse
Affiliation(s)
- Imtiaz Khan
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
| | - Aliya Ibrar
- Department of Chemistry, Faculty of Natural Sciences, The University of Haripur, Haripur, KPK-22620, Pakistan
| | - Sumera Zaib
- Department of Biochemistry, Faculty of Life Sciences, University of Central Punjab, Lahore, 54590, Pakistan
| |
Collapse
|
11
|
Skolia E, Apostolopoulou MK, Nikitas NF, Kokotos CG. Photochemical Synthesis of Benzimidazoles from Diamines and Aldehydes. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001357] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Elpida Skolia
- Laboratory of Organic Chemistry, Department of Chemistry National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece
| | - Mary K. Apostolopoulou
- Laboratory of Organic Chemistry, Department of Chemistry National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece
| | - Nikolaos F. Nikitas
- Laboratory of Organic Chemistry, Department of Chemistry National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece
| | - Christoforos G. Kokotos
- Laboratory of Organic Chemistry, Department of Chemistry National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece
| |
Collapse
|
12
|
Farooq S, Alharthi FA, Alsalme A, Hussain A, Dar BA, Hamid A, Koul S. Dihydropyrimidinones: efficient one-pot green synthesis using Montmorillonite-KSF and evaluation of their cytotoxic activity. RSC Adv 2020; 10:42221-42234. [PMID: 35516739 PMCID: PMC9057999 DOI: 10.1039/d0ra09072g] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 11/13/2020] [Indexed: 01/31/2023] Open
Abstract
A simple, efficient, cost-effective, recyclable and green approach has been developed for the synthesis of new dihydropyrimidinone analogs via the Biginelli reaction. The methodology involves a multicomponent reaction catalyzed by “HPA-Montmorillonite-KSF” as a reusable and heterogeneous catalyst. This method gives an efficient and much improved modification of the original Biginelli reaction, in terms of yield and short reaction times under solvent free conditions. All the derivatives were subjected to cytotoxicity screening against a panel of four different human cancer cell lines viz. colon (Colo-205), prostate (PC-3), leukemia (THP-1) and lung (A549) to check their effect on percentage growth. MTT [3-(4,5-dimethylthiazol-yl)-diphenyl tetrazoliumbromide] cytotoxicity assay was employed to check IC50 values. Of the synthesized analogs, 16a showed the best activity with IC50 of 7.1 ± 0.8, 13.1 ± 1.4, 13.8 ± 0.9 and 14.7 ± 1.1 μM against lung (A549), leukemia (THP-1), prostate (PC-3) and colon (Colo-205) cancer lines, respectively. The 16a analog was further checked for its effect on cancer cell properties through clonogenic (colony formation) and scratch motility (wound healing) assays and thereby was found that it reduced both the colony formation and migratory properties of the lung cancer cell line (A549). Further, molecular docking studies were performed with 16a to show its binding mode. The general method for the preparation of DHPM analogs; cytotoxic activity and binding mode of the most active derivative against PI3Kγ and CDK2 targets.![]()
Collapse
Affiliation(s)
- Saleem Farooq
- Department of Higher Education, Department of Chemistry, Government Degree College for Boys Baramulla 193101 J&K India +91-1952-234214 +91-1952-234214.,Bioorganic Chemistry Division, CSIR-Indian Institute of Integrative Medicine Canal Road Jammu 180001 J&K India
| | - Fahad A Alharthi
- Department of Chemistry, College of Science, King Saud University P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Ali Alsalme
- Department of Chemistry, College of Science, King Saud University P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Aashiq Hussain
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine Canal Road Jammu 180001 J&K India
| | - Bashir A Dar
- Department of Higher Education, Department of Chemistry, Govt. Degree College Sopore Baramulla 193201 J&K India
| | - Abid Hamid
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine Canal Road Jammu 180001 J&K India.,Department of Biotechnology, Central University of Kashmir Ganderbal 191201 J&K India
| | - S Koul
- Bioorganic Chemistry Division, CSIR-Indian Institute of Integrative Medicine Canal Road Jammu 180001 J&K India
| |
Collapse
|
13
|
Abstract
AbstractLactams are very important heterocycles as a result of their presence in a wide range of bioactive molecules, natural products and drugs, and also due their utility as versatile synthetic intermediates. Due to these reasons, numerous efforts have focused on the development of effective and efficient methods for their synthesis. Compared to conventional two-component reactions, multicomponent reactions (MCRs), particularly isocyanide-based MCRs, are widely used for the synthesis of a range of small heterocycles including lactam analogues. Despite their numerous applications in almost every field of chemistry, as yet there is no dedicated review on isocyanide-based multicomponent reactions (IMCRs) concerning the synthesis of lactams. Therefore, this review presents strategies towards the synthesis of α-, β-, γ-, δ- and ε-lactams using IMCRs or IMCRs/post-transformation reactions reported in the literature between 2000 and 2020.1 Introduction2 Developments in Lactam Synthesis2.1 α-Lactams2.2 β-Lactams2.3 γ-Lactams2.3.1 General γ-Lactams2.3.2 Benzo-Fused γ-Lactams2.3.3 Spiro γ-Lactams2.3.4 α,β-Unsaturated γ-Lactams2.3.5 Polycyclic Fused γ-Lactams2.4 δ-Lactams2.5 ε-Lactams3 Conclusions
Collapse
|
14
|
Wu YT, Zhang R, Duan XY, Yu HF, Sun BY, Qi J. Access to dihydropyrano[3,2- b]pyrrol-5-ones skeletons by N-heterocyclic carbene-catalyzed [3+3] annulations. Chem Commun (Camb) 2020; 56:9854-9857. [PMID: 32840527 DOI: 10.1039/d0cc04661b] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A novel and efficient NHC-catalyzed [3+3] annulation of enals with pyrrol-4-ones was developed, thus providing the dihydropyrano[3,2-b]pyrrol-5-one core structures with broad scope and good to excellent enantioselectivities. Notably, this strategy could also expand to the synthesis of axially chiral compounds and polysubstituted indoles.
Collapse
Affiliation(s)
- Ya-Tong Wu
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China.
| | - Rui Zhang
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China.
| | - Xiao-Yong Duan
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China. and Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Hebei University, Baoding 071002, People's Republic of China
| | - Hai-Fei Yu
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China.
| | - Bo-Yu Sun
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China.
| | - Jing Qi
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China. and Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Hebei University, Baoding 071002, People's Republic of China
| |
Collapse
|
15
|
Lai Z, Wang C, Li J, Cui S. Redox Cyclization of Amides and Sulfonamides with Nitrous Oxide for Direct Synthesis of Heterocycles. Org Lett 2020; 22:2017-2021. [DOI: 10.1021/acs.orglett.0c00397] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhencheng Lai
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Chaorong Wang
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jiaming Li
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Sunliang Cui
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| |
Collapse
|
16
|
Song B, Wang M, Xu M, Kong L, Xie H, Wang C, Li Y. Controllable synthesis of pyrido[2,3-b]indol-4-ones or indolo[3,2-b]quinolines via formal intramolecular C(sp 2)-H functionalization. Org Biomol Chem 2019; 17:9960-9965. [PMID: 31730146 DOI: 10.1039/c9ob02108f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel Fe-catalyzed protocol for the controllable synthesis of pyrido[2,3-b]indol-4-ones or indolo[3,2-b]quinolines has been developed by using indole-2-carboxylic derivatives as starting materials. Indole-2-carboxenamines were transformed into pyrido[2,3-b]indol-4-ones through intramolecular N-H/C-H coupling, in which a carbonyl 1,2-migration was involved. Whereas, when indole-2-carboxarylamines were employed, indolo[3,2-b]quinolones were produced through direct N-H/C-H coupling. The desired products were obtained under mild reaction conditions in moderate to good yields with wide substrate scope. The natural product quindolinone was conveniently prepared by this reaction.
Collapse
Affiliation(s)
- Bo Song
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.
| | - Mengdan Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.
| | - Murong Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.
| | - Lingkai Kong
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.
| | - Huihui Xie
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.
| | - Chengyu Wang
- School of Chemistry and Chemical Engineering, Linyi University, Shuangling Road, Linyi, Shandong 276000, China
| | - Yanzhong Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.
| |
Collapse
|
17
|
Tan JF, Bormann CT, Perrin FG, Chadwick FM, Severin K, Cramer N. Divergent Synthesis of Densely Substituted Arenes and Pyridines via Cyclotrimerization Reactions of Alkynyl Triazenes. J Am Chem Soc 2019; 141:10372-10383. [PMID: 31244170 DOI: 10.1021/jacs.9b04111] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Densely substituted fused aromatic triazenes can be prepared by [2 + 2 + 2] cyclotrimerization reactions of 1-alkynyl triazenes. The Cp*Ru-catalyzed cyclization proceeds well with both simple alkynyl triazenes and tethered 1-diynyl triazenes. Attractively, the methodology can be extended to pyridine synthesis by replacing an alkyne with a nitrile. The reaction is regioselective and yields the sterically more hindered product. The triazene group precisely installed on the synthesized aryl and pyridyl ring is a highly versatile moiety, which is effortlessly converted into the most important and frequently used functional aryl substituents, including fluorides. It is also suited for intramolecular transformations to afford a variety of valuable heterocycles. The coordination chemistry of alkynyl triazenes and Cp*RuCl was studied and led to the structural characterization of a Cp*RuCl(η2-alkyne) complex, a Cp*RuCl(η4-cyclobutadiene) complex, and an unusual dinuclear Ru complex with a bridging tetramethylfulvene ligand. Complexes of this type are potentially involved in catalyst deactivation pathways.
Collapse
Affiliation(s)
- Jin-Fay Tan
- Laboratory of Asymmetric Catalysis and Synthesis, Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Carl T Bormann
- Laboratory of Supramolecular Chemistry, Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Florian G Perrin
- Laboratory of Supramolecular Chemistry, Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - F Mark Chadwick
- Laboratory of Supramolecular Chemistry, Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Kay Severin
- Laboratory of Supramolecular Chemistry, Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Nicolai Cramer
- Laboratory of Asymmetric Catalysis and Synthesis, Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| |
Collapse
|
18
|
Vidyacharan S, Ramanjaneyulu BT, Jang S, Kim DP. Continuous-Flow Visible Light Organophotocatalysis for Direct Arylation of 2H-Indazoles: Fast Access to Drug Molecules. CHEMSUSCHEM 2019; 12:2581-2586. [PMID: 30985985 DOI: 10.1002/cssc.201900736] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/09/2019] [Indexed: 06/09/2023]
Abstract
A continuous-flow homogeneous photocatalytic method has been devised for the direct arylation of 2H-indazoles. This visible-light-promoted approach directly accesses a wide range of structurally diverse C3-arylated scaffolds of biological interest in a fast (1 min), single-step reaction by using eosin Y as an organophotocatalyst. Furthermore, a microreactor technology is also employed for the fast synthesis of liver X receptor inhibitor drugs with very good yields under metal-free conditions, whereas the reported methods required multiple steps and much longer reaction times (18-24 h).
Collapse
Affiliation(s)
- Shinde Vidyacharan
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Bandaru T Ramanjaneyulu
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Seungwook Jang
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Dong-Pyo Kim
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| |
Collapse
|
19
|
Chandrakumari S, Gopalakrishnan M, Sivakumar D, Manikandan H. One Pot Synthesis, Characterization, DFT Studies and AIM Analyses of Ethyl-1-aryl-1H-tetrazole-5-carboxylate. LETT ORG CHEM 2019. [DOI: 10.2174/1570178615666180907151830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A new series of bis/mono ethyl-1-aryl-1H-tetrazole-5-carboxylate has been synthesized by treating respective tetrazole with ethyl chloroformate in THF and DIPEA as a catalyst. The structure of the novel molecule is characterized by FT-IR, 1H-NMR, 13C-NMR, and mass spectra. After conforming the structure, bis/mono ethyl-1-aryl-1H-tetrazole-5-carboxylate was subjected to hydrolysis under both acidic and basic conditions. The hydrolysis reaction did not occur; to know the relevant reason, we move to theoretical studies. DFT B3LYP method was used to determine the optimized structure and HOMO & LUMO energies of the title molecule. The energy was found to be from 4.23-5.31 eV. Energy gap was related to hardness and reactivity. Additionally, we provide the reason with respect to AIM analysis, which was performed for one molecule. The synthesized title molecules were characterized by IR, 1H & 13C NMR, mass and elemental analysis. Theoretical studies such as DFT and AIM analysis were also performed. All the synthesized compounds were verified by analytical data such as IR, NMR, elemental analysis, mass spectra and theoretical studies such as DFT and AIM analysis. The HOMO & LUMO energy was found to be from 4.5 eV to 5.2 eV. More energy gap results in enriched hardness in the molecule and decreased reactivity. From the AIM analysis result, we found that there is a formation of a weak bond between the oxygen of the carbonyl group and carbon of the phenyl group. Due to these reasons, the title molecule did not undergo hydrolysis reaction under both acidic and basic conditions. We report on the synthesis and characterization of bis/mono ethyl-1-aryl-1H-tetrazole-5- carboxylate. HOMO & LUMO energy were found to be 4.5 – 5.2 eV. High energy will increase the hardness of the molecule which will result in decreased reactivity of the molecule. Additionally, we provide AIM analysis done for the compound 6a and there is formation of a weak bond between the oxygen of the carbonyl group and carbon of the phenyl group. Oxygen used its lone pair of electron in the formation of a weak bond with carbon and hence oxygen become unreactive and so the hydrolysis reaction did not happen.
Collapse
Affiliation(s)
- Sambandam Chandrakumari
- Department of Chemistry, Annamalai University, Annamalai Nagar, Chidambaram-608 002, TamilNadu, India
| | | | - Dhanavel Sivakumar
- Department of Chemistry, Annamalai University, Annamalai Nagar, Chidambaram-608 002, TamilNadu, India
| | - Haridoss Manikandan
- Department of Chemistry, Annamalai University, Annamalai Nagar, Chidambaram-608 002, TamilNadu, India
| |
Collapse
|
20
|
da Silva RB, Lange Coelho F, Rodembusch FS, Schwab RS, Schneider JMFM, da Silveira Rampon D, Schneider PH. Straightforward synthesis of photoactive chalcogen functionalized benzimidazo[1,2-a]quinolines. NEW J CHEM 2019. [DOI: 10.1039/c9nj01948k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A series of new organochalcogen derivatives of benzimidazo[1,2-a]quinolines were synthesized. Both sulfur and selenium derivatives presented similar photophysical properties with absorption in the UV region and fluorescence emission in the violet-blue.
Collapse
Affiliation(s)
- Rodrigo Borges da Silva
- Instituto de Química
- Departamento de Química Orgânica
- Universidade Federal do Rio Grande do Sul
- UFRGS, Av. Bento Gonçalves
- Porto Alegre
| | - Felipe Lange Coelho
- Instituto de Química
- Departamento de Química Orgânica
- Universidade Federal do Rio Grande do Sul
- UFRGS, Av. Bento Gonçalves
- Porto Alegre
| | - Fabiano Severo Rodembusch
- Instituto de Química
- Departamento de Química Orgânica
- Universidade Federal do Rio Grande do Sul
- UFRGS, Av. Bento Gonçalves
- Porto Alegre
| | - Ricardo Samuel Schwab
- Departamento de Química
- Universidade Federal de São Carlos – UFSCar
- Rodovia Washington Luís
- São Carlos
- Brazil
| | | | - Daniel da Silveira Rampon
- Laboratory of Polymers and Molecular Catalysis (LAPOCA)
- Department of Chemistry
- Federal University of Paraná – UFPR
- Curitiba
- Brazil
| | - Paulo Henrique Schneider
- Instituto de Química
- Departamento de Química Orgânica
- Universidade Federal do Rio Grande do Sul
- UFRGS, Av. Bento Gonçalves
- Porto Alegre
| |
Collapse
|
21
|
Enantioselective synthesis of indolo[2,3-b]-dihydrothiopyranones via [3+3] cycloaddition of chiral α,β-unsaturated acylammonium salts. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.09.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
22
|
Tzeli D, Kozielewicz P, Zloh M, Antonow D, Tsoungas PG, Petsalakis ID. Naphthalene Peri Annelated N,N- and N,O-Heterocycles: The Effect of Heteroatom-Guided Peri
-Fusion on Their Structure and Reactivity Profiles-A Theoretical Endoscopy. ChemistrySelect 2018. [DOI: 10.1002/slct.201801627] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Demeter Tzeli
- Theoretical and Physical Chemistry Institute; National Hellenic Research Foundation, 48 Vassileos Constantinou Ave.; Athens 116 35 Greece
| | - Pawel Kozielewicz
- Karoliska Institutet; Dept of Physiology and Pharmacology; Karolinska Institutet, Solnavägen 9; 17165 Stockholm Sweden
| | - Mire Zloh
- Dept of Pharmacy; School of Life & Medical Sciences; University of Hertfordshire, Hatfield, Hertfordshire; AL10 9AB, U K
| | - Dyeison Antonow
- National Council for Scientific and Technological Development (CNPq); Brazil
| | - Petros G. Tsoungas
- Department of Biochemistry; Hellenic Pasteur Institute, 127 Vas.Sofias Ave., Athens; GR-11521 Greece
| | - Ioannis D. Petsalakis
- Theoretical and Physical Chemistry Institute; National Hellenic Research Foundation, 48 Vassileos Constantinou Ave.; Athens 116 35 Greece
| |
Collapse
|
23
|
Kandemir H, Saglam MF, Sengul IF. Synthesis of Methylene Bridged Bis-pyrrolo[3,2-c]carbazoles via an Unusual Vilsmeier–Haack Product of N-Ethylcarbazole. Polycycl Aromat Compd 2018. [DOI: 10.1080/10406638.2018.1458739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Hakan Kandemir
- Department of Chemistry, Faculty of Art and Science, Namık Kemal University, Tekirdag, Turkey
| | - Mehmet F. Saglam
- Department of Chemistry, Faculty of Science, Gebze Technical University, Gebze, Kocaeli, Turkey
| | - Ibrahim F. Sengul
- Department of Chemistry, Faculty of Science, Gebze Technical University, Gebze, Kocaeli, Turkey
| |
Collapse
|
24
|
Murugan A, Gorantla KR, Mallik BS, Sharada DS. Iron promoted C3–H nitration of 2H-indazole: direct access to 3-nitro-2H-indazoles. Org Biomol Chem 2018; 16:5113-5118. [DOI: 10.1039/c8ob00931g] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An efficient C3–H functionalization of indazole has been demonstrated. Notably, this method involves chelation-free radical C–H nitration on 2H-indazole. The radical mechanism was confirmed by control experiments and quantum chemical calculations. The synthetic utility has been proven by the synthesis of bio-relevant benzimidazoindazoles via reductive cyclization.
Collapse
Affiliation(s)
| | | | - Bhabani S. Mallik
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- India
| | - Duddu S. Sharada
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- India
| |
Collapse
|
25
|
Jin Q, Zhang J, Hu S. Tributylphosphane-promoted [3 + 2] annulation of 3-hydroxyoxindoles with acrylates: Synthesis of spirocyclic oxindole-lactones. JOURNAL OF SAUDI CHEMICAL SOCIETY 2018. [DOI: 10.1016/j.jscs.2017.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
26
|
Convenient two-step synthesis of highly functionalized benzo-fused 1,4-diazepin-3-ones and 1,5-diazocin-4-ones by sequential Ugi and intramolecular S N Ar reactions. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.09.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
27
|
Protasova I, Heißler S, Jung N, Bräse S. Monitoring Reactions on Solid Phases with Raman Spectroscopy. Chemistry 2017; 23:8703-8711. [PMID: 28370662 DOI: 10.1002/chem.201700907] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Indexed: 11/06/2022]
Abstract
The benefits of Raman spectroscopy were shown for the on-bead monitoring of diverse reactions. Raman spectroscopy was used for the development of new procedures on established linker systems, the real-time observation of several reactions on solid phases and the estimation of the reaction time for a new cleavage strategy. Selected conversions on solid phases, such as the on-bead conversion of functional groups and the attachment of novel building blocks, were demonstrated. Raman spectra were obtained after isolation and purification of the solid supports, but they were also measured directly in the reaction vessels. Even the detection of Raman-active functional groups in swollen polymer resins and in reaction mixtures was demonstrated, and allows real-time observation of the progress of diverse reactions on solid supports.
Collapse
Affiliation(s)
- Irina Protasova
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Campus North, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Stefan Heißler
- Institute of Functional Interfaces, Karlsruhe Institute of Technology, Campus North, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Nicole Jung
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Campus North, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.,Institute of Organic Chemistry, Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, 76131, Karlsruhe, Germany
| | - Stefan Bräse
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Campus North, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.,Institute of Organic Chemistry, Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, 76131, Karlsruhe, Germany
| |
Collapse
|
28
|
Kumar A, Ahmed QN. A Benzoquinone Imine Assisted Ring-Opening/Ring-Closing Strategy of the RCOCHN1
N2
System: Dinitrogen Extrusion Reaction to Benzimidazoles. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700357] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Atul Kumar
- Medicinal Chemistry Division; Indian Institute of Integrative Medicine (IIIM); Canal Road 180001 Jammu Jammu & Kashmir India
- Academy of Scientific and Innovative Research (AcSIR); Indian Institute of Integrative Medicine (IIIM); Canal Road 180001 Jammu Jammu & Kashmir India
| | - Qazi Naveed Ahmed
- Medicinal Chemistry Division; Indian Institute of Integrative Medicine (IIIM); Canal Road 180001 Jammu Jammu & Kashmir India
- Academy of Scientific and Innovative Research (AcSIR); Indian Institute of Integrative Medicine (IIIM); Canal Road 180001 Jammu Jammu & Kashmir India
| |
Collapse
|
29
|
Yi L, Zhang Y, Zhang ZF, Sun D, Ye S. Synthesis of Dihydropyridinone-Fused Indoles and α-Carbolines via N-Heterocyclic Carbene-Catalyzed [3 + 3] Annulation of Indolin-2-imines and Bromoenals. Org Lett 2017; 19:2286-2289. [PMID: 28430455 DOI: 10.1021/acs.orglett.7b00820] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Liang Yi
- Beijing
National Laboratory for Molecular Science, Key Laboratory of Molecular
Recognition and Function, CAS Research/Education Center for Excellence
in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Marine
College, Shandong University at Weihai, 180 Wenhua West Road, Weihai 264209, China
| | - Yuyang Zhang
- Beijing
National Laboratory for Molecular Science, Key Laboratory of Molecular
Recognition and Function, CAS Research/Education Center for Excellence
in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhao-Fei Zhang
- Beijing
National Laboratory for Molecular Science, Key Laboratory of Molecular
Recognition and Function, CAS Research/Education Center for Excellence
in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Science, Beijing 100049, P. R. China
| | - Dequn Sun
- Marine
College, Shandong University at Weihai, 180 Wenhua West Road, Weihai 264209, China
| | - Song Ye
- Beijing
National Laboratory for Molecular Science, Key Laboratory of Molecular
Recognition and Function, CAS Research/Education Center for Excellence
in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Science, Beijing 100049, P. R. China
| |
Collapse
|
30
|
Vidyacharan S, Adhikari C, Krishna VS, Reshma RS, Sriram D, Sharada DS. A robust synthesis of functionalized 2 H -indazoles via solid state melt reaction (SSMR) and their anti-tubercular activity. Bioorg Med Chem Lett 2017; 27:1593-1597. [DOI: 10.1016/j.bmcl.2017.02.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 02/03/2017] [Accepted: 02/09/2017] [Indexed: 01/16/2023]
|
31
|
Khillare LD, Pratap UR, Bhosle MR, Dhumal ST, Bhalerao MB, Mane RA. Syntheses of biodynamic heterocycles: baker’s yeast-assisted cyclocondensations of organic nucleophiles and phenacyl chlorides. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-2880-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
32
|
A Novel Synthesis of 1,2,3-Benzotriazinones from 2-( o-Aminophenyl)oxazolines. J CHEM-NY 2017. [DOI: 10.1155/2017/2384780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
1,2,3-Benzotriazinones were synthesized in excellent yields by the reaction of 2-(o-aminophenyl)oxazolines and isoamyl nitrite in methanol. The crystal structure of the acetyl derivative of one of the 1,2,3-benzotriazinones provided additional support for the spectroscopic structural characterization of the title compounds.
Collapse
|
33
|
Yi L, Chen KQ, Liang ZQ, Sun DQ, Ye S. N-Heterocyclic Carbene-Catalyzed [3+3] Annulation of Indoline-2-thiones with Bromoenals: Synthesis of Indolo[2,3-b]dihydrothiopyranones. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600726] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Liang Yi
- Marine College; Shandong University at Weihai; 180 Wenhua West Road Weihai 264209 People's Republic of China
- Beijing National Laboratory for Molecular Science, Key Laboratory of Molecular Recognition and Functional, Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
| | - Kun-Quan Chen
- Beijing National Laboratory for Molecular Science, Key Laboratory of Molecular Recognition and Functional, Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
- University of Chinese Academy of Sciences; Beijing 100049 People's Republic of China
| | - Zhi-Qin Liang
- Beijing National Laboratory for Molecular Science, Key Laboratory of Molecular Recognition and Functional, Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
- University of Chinese Academy of Sciences; Beijing 100049 People's Republic of China
| | - De-Qun Sun
- Marine College; Shandong University at Weihai; 180 Wenhua West Road Weihai 264209 People's Republic of China
| | - Song Ye
- Beijing National Laboratory for Molecular Science, Key Laboratory of Molecular Recognition and Functional, Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
- University of Chinese Academy of Sciences; Beijing 100049 People's Republic of China
| |
Collapse
|
34
|
Kenchappa R, Bodke YD, Telkar S, Aruna Sindhe M. Antifungal and anthelmintic activity of novel benzofuran derivatives containing thiazolo benzimidazole nucleus: an in vitro evaluation. J Chem Biol 2016; 10:11-23. [PMID: 28101251 DOI: 10.1007/s12154-016-0160-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Accepted: 09/02/2016] [Indexed: 11/26/2022] Open
Abstract
A novel series of thiazolo[3,2-a]benzimidazole derivatives containing benzofuran nucleus (5a-l) have been synthesized. The key intermediate, substituted benzimidazol-sulfanyl benzofuran ethanone (3a-d) was prepared by refluxing the mixture of substituted 2-acetyl benzofuran and substituted 2-mercaptobenzimidazole in acetic acid. The cyclisation of compounds (3a-d) using polyphosphoric acid furnished the corresponding 6-substituted benzofuran thiazolo[3,2-a]benzimidazoles (4a-d). Further, the cyclized compounds (4a-d) were subjected for Mannich reaction to give corresponding Mannich bases (5a-l). All newly synthesized compounds were screened for antifungal and anthelmintic activity. Amongst the tested compounds, 4b and 4d exhibited potential antifungal activity. From the anthelmintic activity data, it was found that the compounds 3a, 3b and 5i were found to be more effective against the tested earthworm Pheretima posthuma. In correlation to anthelmintic activity, the selected compounds were subjected for molecular docking studies and the compounds 3a and 5i have emerged as active anthelmintic agents with maximum binding affinity (-3.7 and -5.4 kcal/mol).
Collapse
Affiliation(s)
- R Kenchappa
- Department of P.G. Studies and Research in Industrial Chemistry, Jnana Sahyadri, Kuvempu University, Shankaraghatta, Shivamogga, Karnataka 577451 India
| | - Yadav D Bodke
- Department of P.G. Studies and Research in Industrial Chemistry, Jnana Sahyadri, Kuvempu University, Shankaraghatta, Shivamogga, Karnataka 577451 India
| | - Sandeep Telkar
- Department of P.G. Studies and Research in Biotechnology and Bioinformatics, Jnana sahyadri, Kuvempu University, Shankaraghatta, Karnataka, 577 451 India
| | - M Aruna Sindhe
- Department of P.G. Studies and Research in Industrial Chemistry, Jnana Sahyadri, Kuvempu University, Shankaraghatta, Shivamogga, Karnataka 577451 India
| |
Collapse
|
35
|
Gräßle S, Vanderheiden S, Hodapp P, Bulat B, Nieger M, Jung N, Bräse S. Solid Phase Synthesis of (Benzannelated) Six-Membered Heterocycles via Cyclative Cleavage of Resin-Bound Pseudo-Oxazolones. Org Lett 2016; 18:3598-601. [PMID: 27399339 DOI: 10.1021/acs.orglett.6b01609] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A solid supported procedure for the synthesis of benzoxazinones, dihydropyrazinones, quinoxalinones, and dihydrooxazinones using immobilized oxazolones in combination with difunctional nucleophiles as cleavage agent is presented. The scope of the novel method has been demonstrated through subsequent modification of the parent oxazolone scaffold on solid supports using conversions with electrophiles or CuAAC reactions to give functionalized pyrazin-2-ones. The described method allows the synthesis of the target heterocycles in good yields via three to five steps on solid phases with only one chromatographic purification step.
Collapse
Affiliation(s)
- Simone Gräßle
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Sylvia Vanderheiden
- Institute of Organic Chemistry, Karlsruhe Institute of Technology , Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Patrick Hodapp
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Bekir Bulat
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Martin Nieger
- Laboratory of Inorganic Chemistry, Department of Chemistry, University of Helsinki , P.O Box 55, A. I. Virtasen aukio 1, 00014 Helsinki, Finland
| | - Nicole Jung
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.,Institute of Organic Chemistry, Karlsruhe Institute of Technology , Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Stefan Bräse
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.,Institute of Organic Chemistry, Karlsruhe Institute of Technology , Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| |
Collapse
|
36
|
Hati S, Kumar Dutta P, Dutta S, Munshi P, Sen S. Accessing Benzimidazoles via a Ring Distortion Strategy: An Oxone Mediated Tandem Reaction of 2-Aminobenzylamines. Org Lett 2016; 18:3090-3. [PMID: 27331245 DOI: 10.1021/acs.orglett.6b01217] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An exceptional oxone mediated tandem transformation of 2-aminobenzylamines to 2-substituted benzimidazoles is reported. It occurs at room temperature with aromatic, heteroaromatic, and aliphatic aldehydes. In this reaction initial condensation of 2-aminobenzylamine with appropriate aldehydes afforded a tetrahydroquinazoline intermediate which underwent oxone-mediated ring distortion to afford the desired compounds in moderate to excellent yields.
Collapse
Affiliation(s)
- Santanu Hati
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University , Chithera, Dadri, Gautam Buddha Nagar, UP 201314, India
| | - Pratip Kumar Dutta
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University , Chithera, Dadri, Gautam Buddha Nagar, UP 201314, India
| | - Sanjay Dutta
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University , Chithera, Dadri, Gautam Buddha Nagar, UP 201314, India
| | - Parthapratim Munshi
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University , Chithera, Dadri, Gautam Buddha Nagar, UP 201314, India
| | - Subhabrata Sen
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University , Chithera, Dadri, Gautam Buddha Nagar, UP 201314, India
| |
Collapse
|
37
|
Naeimi H, Heidarnezhad A. Facile one-pot synthesis of 2-arylbenzothiazoles catalyzed by H 3PO 4/TiO 2-ZrO 2 (1/1) under solvent-free conditions. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1159697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Hossein Naeimi
- Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran
| | - Arash Heidarnezhad
- Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran
| |
Collapse
|
38
|
Vidyacharan S, Murugan A, Sharada DS. C(sp(2))-H Functionalization of 2H-Indazoles at C3-Position via Palladium(II)-Catalyzed Isocyanide Insertion Strategy Leading to Diverse Heterocycles. J Org Chem 2016; 81:2837-48. [PMID: 26954483 DOI: 10.1021/acs.joc.6b00048] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Herein, we have reported an efficient Pd-catalyzed C-H functionalization of 2H-indazole at C3-position via an isocyanide insertion strategy for the synthesis of unprecedented benzoxazinoindazoles, indazoloquinaoxalines and benzoxazinoindazolones for the first time. Our new method provides an operationally simple and versatile route for a selective synthesis of 2-(2H-indazol-2-yl)phenols. Furthermore, we developed a sequential one-pot strategy for the synthesis of benzoxazinoindazolone under metal-oxidant-free conditions. We also achieved the isocyanide insertion between C(sp(2))-H and oxygen heteroatom for the first time. The key features of the present protocol are construction of 4 bonds in one-pot, synthesis of new skeletally diverse scaffolds, broad substrate scope, high yields and environmentally benign conditions.
Collapse
Affiliation(s)
- Shinde Vidyacharan
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi, Sangareddy, Medak District 502285, Telangana, India
| | - Arumugavel Murugan
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi, Sangareddy, Medak District 502285, Telangana, India
| | - Duddu S Sharada
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi, Sangareddy, Medak District 502285, Telangana, India
| |
Collapse
|
39
|
|
40
|
Das D, Pathak G, Rokhum SL. Polymer supported DMAP: an easily recyclable organocatalyst for highly atom-economical Henry reaction under solvent-free conditions. RSC Adv 2016. [DOI: 10.1039/c6ra23696k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Polymer supported catalysts are regarded as a borderline class of catalysts, which retains the advantages of homogeneous catalysts while securing the ease of recovery by simple filtration and workup of heterogeneous systems.
Collapse
Affiliation(s)
- Diparjun Das
- Department of Chemistry, National Institute of Technology Silchar, Silchar-788010, Assam, India
| | - Gunindra Pathak
- Department of Chemistry, National Institute of Technology Silchar, Silchar-788010, Assam, India
| | | |
Collapse
|
41
|
Dogra S, Sharma ML, Singh J. Comparative study of chemically immobilized and conventional homogeneous ionic liquids as phase-transfer catalysts for the N-alkylation of heterocyclic compounds. CR CHIM 2015. [DOI: 10.1016/j.crci.2015.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
42
|
Trichili S, Kammoun M, Turki-Guermazi H, Abid S, Ammar H. Synthesis of New 3-Carboxamidine Iminocoumarins and Benzopyrano[2,3-d]pyrimidines. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2014.997365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Sihem Trichili
- Laboratoire de Chimie Appliquée: Hétérocycles, Corps Gras et Polymères, Faculté des Sciences de Sfax, Université de Sfax, Sfax, Tunisia
| | - Myriam Kammoun
- Laboratoire de Chimie Appliquée: Hétérocycles, Corps Gras et Polymères, Faculté des Sciences de Sfax, Université de Sfax, Sfax, Tunisia
| | - Hamida Turki-Guermazi
- Laboratoire de Chimie Appliquée: Hétérocycles, Corps Gras et Polymères, Faculté des Sciences de Sfax, Université de Sfax, Sfax, Tunisia
| | - Souhir Abid
- Laboratoire de Chimie Appliquée: Hétérocycles, Corps Gras et Polymères, Faculté des Sciences de Sfax, Université de Sfax, Sfax, Tunisia
| | - Houcine Ammar
- Laboratoire de Chimie Appliquée: Hétérocycles, Corps Gras et Polymères, Faculté des Sciences de Sfax, Université de Sfax, Sfax, Tunisia
| |
Collapse
|
43
|
Méndez L, Mata EG. Solid-supported cross-metathesis and a formal alkane metathesis for the generation of biologically relevant molecules. ACS COMBINATORIAL SCIENCE 2015; 17:81-6. [PMID: 25569690 DOI: 10.1021/co500176b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Solid-phase synthetic strategies toward the generation of libraries of biologically relevant molecules were developed using olefin cross-metathesis as a key step. It is remarkably the formal alkane metathesis based on a one-pot, microwave-assisted, ruthenium-catalyzed cross-metathesis and reduction to obtain Csp3-Csp3 linkages.
Collapse
Affiliation(s)
- Luciana Méndez
- Instituto de Química
Rosario (CONICET—UNR), Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario, Suipacha
531, 2000 Rosario, Argentina
| | - Ernesto G. Mata
- Instituto de Química
Rosario (CONICET—UNR), Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario, Suipacha
531, 2000 Rosario, Argentina
| |
Collapse
|
44
|
Liu XL, Pan BW, Zhang WH, Yang C, Yang J, Shi Y, Feng TT, Zhou Y, Yuan WC. A highly efficient and eco-friendly method for the synthesis of 1,3-indandione ring-fused 3-oxindoles bearing two contiguous quaternary stereocenters via an aldol reaction in aqueous media. Org Biomol Chem 2015; 13:601-11. [DOI: 10.1039/c4ob02103g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and antitumor activity evaluation of 1,3-indandione ring-fused 3-oxindoles.
Collapse
Affiliation(s)
- Xiong-Li Liu
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine
- College of Pharmacy
- Guizhou University
- Guiyang
- China
| | - Bo-Wen Pan
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine
- College of Pharmacy
- Guizhou University
- Guiyang
- China
| | - Wen-Hui Zhang
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine
- College of Pharmacy
- Guizhou University
- Guiyang
- China
| | - Chao Yang
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine
- College of Pharmacy
- Guizhou University
- Guiyang
- China
| | - Jun Yang
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine
- College of Pharmacy
- Guizhou University
- Guiyang
- China
| | - Yang Shi
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine
- College of Pharmacy
- Guizhou University
- Guiyang
- China
| | - Ting-Ting Feng
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine
- College of Pharmacy
- Guizhou University
- Guiyang
- China
| | - Ying Zhou
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine
- College of Pharmacy
- Guizhou University
- Guiyang
- China
| | - Wei-Cheng Yuan
- Key Laboratory for Asymmetric Synthesis & Chirotechnology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- China
| |
Collapse
|
45
|
Garcia AM, Jung N, Gil C, Nieger M, Bräse S. Solid phase synthesis of functionalized indazoles using triazenes – scope and limitations. RSC Adv 2015. [DOI: 10.1039/c5ra09705c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, we present a modular synthesis of highly substituted indazoles via a strategy on solid supports.
Collapse
Affiliation(s)
- Ana Maria Garcia
- Institute of Toxicology and Genetics
- Karlsruhe Institute of Technology
- 76344 Eggenstein-Leopoldshafen
- Germany
- Centro de Investigaciones Biológicas (CSIC)
| | - Nicole Jung
- Institute of Toxicology and Genetics
- Karlsruhe Institute of Technology
- 76344 Eggenstein-Leopoldshafen
- Germany
- Institute of Organic Chemistry
| | - Carmen Gil
- Centro de Investigaciones Biológicas (CSIC)
- 28040 Madrid
- Spain
| | - Martin Nieger
- Laboratory of Inorganic Chemistry
- Department of Chemistry
- University of Helsinki
- 00014 Helsinki
- Finland
| | - Stefan Bräse
- Institute of Toxicology and Genetics
- Karlsruhe Institute of Technology
- 76344 Eggenstein-Leopoldshafen
- Germany
- Institute of Organic Chemistry
| |
Collapse
|
46
|
Maity S, Kundu A, Pramanik A. Synthesis of biologically important, fluorescence active 5-hydroxy benzo[g]indoles through four-component domino condensations and their fluorescence “Turn-off” sensing of Fe(iii) ions. RSC Adv 2015. [DOI: 10.1039/c5ra05780a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The efficiently synthesized fluorescence active 5-hydroxy benzo[g]indoles show excellent fluorescence "Turn-off" sensing of Fe3+ ions.
Collapse
Affiliation(s)
- Subhendu Maity
- Department of Chemistry
- University of Calcutta
- Kolkata-700 009
- India
| | - Ashis Kundu
- Department of Chemistry
- University of Calcutta
- Kolkata-700 009
- India
| | - Animesh Pramanik
- Department of Chemistry
- University of Calcutta
- Kolkata-700 009
- India
| |
Collapse
|
47
|
Feng TT, Huang X, Liu XL, Jing DH, Liu XW, Guo FM, Zhou Y, Yuan WC. Highly regioselective synthesis of 3-alkenyl-oxindole ring-fused 3,3′-disubstituted oxindoles via direct gamma-substitution of Morita–Baylis–Hillman carbonates of isatins with 3-substituted oxindoles. Org Biomol Chem 2014; 12:9366-74. [DOI: 10.1039/c4ob01523a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
48
|
Present status of quinoxaline motifs: Excellent pathfinders in therapeutic medicine. Eur J Med Chem 2014; 85:688-715. [DOI: 10.1016/j.ejmech.2014.08.034] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Revised: 08/07/2014] [Accepted: 08/08/2014] [Indexed: 11/18/2022]
|
49
|
Solid-phase synthesis of benzazoles, quinazolines, and quinazolinones using an alkoxyamine linker. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.08.095] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
50
|
Methanol facilitated synthesis of 7-methoxy-2-thioxo-2,3-dihydro-1H-1,3-diazepin-4(7H)-ones from nitroallylic acetates and thiourea. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.08.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|