1
|
Baranwal J, Singh S, Kushwaha S, Jyoti A. An Eco-friendly Strategy for the Synthesis of Spiro-benzimidazoquinazolinone and Spiro-benzothiazoloquinazolinone Derivatives using β-cyclodextrin as a Supramolecular Catalyst. Curr Drug Discov Technol 2024; 21:e271223224897. [PMID: 38151832 DOI: 10.2174/0115701638276530231220080041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/07/2023] [Accepted: 12/05/2023] [Indexed: 12/29/2023]
Abstract
BACKGROUND Cyclodextrins selectively bind with reactants and facilitate chemical reactions through supramolecular catalysis, similar to the mechanisms employed by enzymes. In this paper, β-cyclodextrin was used as a supramolecular catalyst in water as a green, reusable, and ecofriendly solvent system to synthesize spiro-benzimidazoquinazolinones and spiro-benzothiazoloquinazolinones. OBJECTIVE A supramolecular catalyst β-cyclodextrin (β-CD) is used to synthesize spiro- benzimidazoquinazolinones and spiro-benzothiazoloquinazolinones via multicomponent reaction involving the condensation of dimedone, isatin, and 2-aminobenzimidazole/2-aminobenzothiazole. METHODS In a 50 mL round bottom flask were added the respective mixture of substituted isatin (1 mmol), dimedone (1mmol), and 2-aminobenzimidazole/2-aminobenzothiazole (1 mmol) in water (5 ml) containing β-CD (113 mg, 10 mol. %) was stirred at 60oC for 30 min. The desired product was obtained with excellent yield. After completion of the reaction (monitored by TLC), the reaction mixture was quenched with water and extracted with ethyl acetate (4X5 ml). The combined organic layers were washed with brine solution, dried over anhydrous Na2SO4 and evaporated under reduced pressure. The crude product was purified by silica gel chromatography. RESULTS β-cyclodextrin catalyst showed very good efficiency in the synthesis of the desired compounds and can be easily recovered and reused at least five times with minimal deactivation in catalytic activity. CONCLUSION The catalyst demonstrated remarkable effectiveness in producing the target compounds and conducting the reaction with different initial substances, resulting in excellent yields of the products, thereby confirming the broad applicability and versatility of this method.
Collapse
Affiliation(s)
- Jyoti Baranwal
- Department of Chemistry, S. S. Khanna Girls' Degree College, Prayagraj, Uttar Pradesh, India
| | - Swastika Singh
- Department of Chemistry, S. S. Khanna Girls' Degree College, Prayagraj, Uttar Pradesh, India
| | - Smriti Kushwaha
- Department of Chemistry, S. S. Khanna Girls' Degree College, Prayagraj, Uttar Pradesh, India
| | - Archana Jyoti
- Department of Chemistry, S. S. Khanna Girls' Degree College, Prayagraj, Uttar Pradesh, India
| |
Collapse
|
2
|
Patil P, N NB, Satyanarayan ND, Pore S, Zond R, Hangirgekar AGS, Sankpal S. Design, synthesis, docking studies and anticancer evaluation of spiro[indoline-3,4′-pyrano[2,3-c]pyrazole] derivatives on MIN-6 cancer cell line. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
3
|
Insuasty D, Castillo J, Becerra D, Rojas H, Abonia R. Synthesis of Biologically Active Molecules through Multicomponent Reactions. Molecules 2020; 25:E505. [PMID: 31991635 PMCID: PMC7038231 DOI: 10.3390/molecules25030505] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 01/18/2020] [Accepted: 01/20/2020] [Indexed: 02/02/2023] Open
Abstract
Focusing on the literature progress since 2002, the present review explores the highly significant role that multicomponent reactions (MCRs) have played as a very important tool for expedite synthesis of a vast number of organic molecules, but also, highlights the fact that many of such molecules are biologically active or at least have been submitted to any biological screen. The selected papers covered in this review must meet two mandatory requirements: (1) the reported products should be obtained via a multicomponent reaction; (2) the reported products should be biologically actives or at least tested for any biological property. Given the diversity of synthetic approaches utilized in MCRs, the highly diverse nature of the biological activities evaluated for the synthesized compounds, and considering their huge structural variability, much of the reported data are organized into concise schemes and tables to facilitate comparison, and to underscore the key points of this review.
Collapse
Affiliation(s)
- Daniel Insuasty
- Grupo de Investigación en Química y Biología, Departamento de Química y Biología, Universidad del Norte, Km 5 vía Puerto Colombia 1569, Barranquilla Atlántico 081007, Colombia;
| | - Juan Castillo
- Grupo de Catálisis, Escuela de Ciencias Químicas, Universidad Pedagógica y Tecnológica de Colombia UPTC, Avenida Central del Norte 39-115, Tunja 150003, Colombia; (J.C.); (D.B.); (H.R.)
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Diana Becerra
- Grupo de Catálisis, Escuela de Ciencias Químicas, Universidad Pedagógica y Tecnológica de Colombia UPTC, Avenida Central del Norte 39-115, Tunja 150003, Colombia; (J.C.); (D.B.); (H.R.)
| | - Hugo Rojas
- Grupo de Catálisis, Escuela de Ciencias Químicas, Universidad Pedagógica y Tecnológica de Colombia UPTC, Avenida Central del Norte 39-115, Tunja 150003, Colombia; (J.C.); (D.B.); (H.R.)
| | - Rodrigo Abonia
- Research Group of Heterocyclic Compounds, Department of Chemistry, Universidad del Valle, Cali A. A. 25360, Colombia
| |
Collapse
|
4
|
Shin J, Magar KBS, Lee J, Kim KS, Lee YR. Design, synthesis, and discovery of novel oxindoles bearing 3-heterocycles as species-specific and combinatorial agents in eradicating Staphylococcus species. Sci Rep 2019; 9:8012. [PMID: 31527598 PMCID: PMC6746789 DOI: 10.1038/s41598-019-44304-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 05/14/2019] [Indexed: 01/12/2023] Open
Abstract
A series of new functionalized 3-indolylindolin-2-ones, 3-(1-methylpyrrol-2-yl)indolin-2-ones, and 3-(thiophen-2-yl)indolin-2-ones were synthesized by using novel indium (III)-catalysed reaction of various 3-diazoindolin-2-ones with indoles, 1-methylpyrrole, or thiophene via one-pot procedure. The newly synthesized compounds were characterized and screened for their in vitro antibacterial activity against various Staphylococcus species, including methicillin-resistant Staphylococcus aureus. results revealed that five compounds KS15, KS16, KS17, KS19, and KS20 exhibited potent and specific antibacterial activity against Staphylococcus species albeit inactive against Gram-negative bacteria. Especially, compounds exhibited superior antibacterial potency against Staphylococcus epidermidis compared to the reference drug streptomycin. The most potential compound KS16 also increased the susceptibility of Staphylococcus aureus to ciprofloxacin, gentamicin, kanamycin, and streptomycin. Among them, KS16 was found to be a synergistic compound with gentamicin and kanamycin. Furthermore, the cellular level of autolysin protein was increased from the KS16-treated Staphylococcus aureus cells. Finally, in vitro CCK-8 assays showed that KS16 exhibited no cytotoxicity at the minimum inhibitory concentrations used for killing Staphylococcus species. From all our results, novel oxindole compounds directly have lethal action or boost existing antibiotic power with the reduction of doses and toxicity in the treatment of multidrug-resistant Staphylococcus species.
Collapse
Affiliation(s)
- Jonghoon Shin
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Republic of Korea
| | | | - Jungwoon Lee
- Environmental Disease Research Center, Korea Research Institute of Bioscience & Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Kwang-Sun Kim
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Republic of Korea.
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
| |
Collapse
|
5
|
Kasaboina S, Bollu R, Ramineni V, Gomedhika PM, Korra K, Basaboina SR, Holagunda UD, Nagarapu L, Dumala N, Grover P, Bathini R, Vijjulatha M. Novel benzosuberone conjugates as potential anti-proliferative agents: Design, synthesis and molecular docking studies. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.11.072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
6
|
Shaabani A, Nazeri MT, Afshari R. 5-Amino-pyrazoles: potent reagents in organic and medicinal synthesis. Mol Divers 2018; 23:751-807. [PMID: 30552550 DOI: 10.1007/s11030-018-9902-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 12/04/2018] [Indexed: 12/31/2022]
Abstract
5-Amino-pyrazoles have proven to be a class of fascinating and privileged organic tools for the construction of diverse heterocyclic or fused heterocyclic scaffolds. This review presents comprehensively the applications of 5-amino-pyrazoles as versatile synthetic building blocks in the synthesis of remarkable organic molecules with an emphasis on versatile functionalities. Following a brief introduction of synthesis methods, planning strategies to construct organic compounds, particularly diverse heterocyclic scaffolds, such as poly-substituted heterocyclic compounds and fused heterocyclic compounds via 5-amino-pyrazoles, have been summarized. Fused heterocycles are classified as bicyclic, tricyclic, tetracyclic, and spiro-fused pyrazole derivatives. These outstanding compounds synthesized via wide variety of approaches include conventional reactions, one-pot multi-component reactions, cyclocondensation, cascade/tandem protocols, and coupling reactions. 5-Amino-pyrazoles represent a class of promising functional reagents, similar to the biologically active compounds, highlighted with diverse applications especially in the field of pharmaceutics and medicinal chemistry. Notably, this critical review covers the articles published from 1981 to 2018.
Collapse
Affiliation(s)
- Ahmad Shaabani
- Faculty of Chemistry, Shahid Beheshti University, G. C., P. O. Box 19396-4716, Tehran, Iran.
| | - Mohammad Taghi Nazeri
- Faculty of Chemistry, Shahid Beheshti University, G. C., P. O. Box 19396-4716, Tehran, Iran
| | - Ronak Afshari
- Faculty of Chemistry, Shahid Beheshti University, G. C., P. O. Box 19396-4716, Tehran, Iran
| |
Collapse
|
7
|
Abbasi M. β-Cyclodextrin as an Efficient and Recyclable Supramolecular Catalyst for the Synthesis of Heterocyclic Compounds. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201600887] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Mohsen Abbasi
- Young Researchers and Elite Club, Lamerd Branch; Islamic Azad University; Lamerd Fars Iran
| |
Collapse
|
8
|
Kaur M, Singh M, Chadha N, Silakari O. Oxindole: A chemical prism carrying plethora of therapeutic benefits. Eur J Med Chem 2016; 123:858-894. [PMID: 27543880 DOI: 10.1016/j.ejmech.2016.08.011] [Citation(s) in RCA: 197] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 07/21/2016] [Accepted: 08/07/2016] [Indexed: 12/16/2022]
Abstract
Oxindole has emerged as a valuable scaffold in medicinal chemistry possessing diverse range of pharmacological activities. Its value has further been increased by its natural occurrence as alkaloids in variety of plants. It was first extracted from the cat claw's plant Uncaria tomentosa found in the Amazon rainforest and other tropical areas of South and Central America. Traditionally as well as present emerging therapeutic potential of oxindole nucleus has captured the interest of medicinal chemists to synthesize novel oxindole derivatives. In the present review the authors have integrated its chemistry and synthetic strategies developed after 1945. Also the information of naturally occurring oxindole alkaloids has been incorporated. The detailed pharmacological activities including anti-cancer, anti-HIV, antidiabetic, antibacterial, antioxidant, kinase inhibitory, AChE inhibitory, anti-leishmanial, β3 adrenergic receptor agonistic, phosphatase inhibitory, analgesic, spermicidal, vasopressin antagonists, progesterone antagonists, neuroprotection, and NMDA blocker activities of oxindole derivatives alongwith their SAR has also been discussed in detail. Additionally, information regarding the oxindole derivatives in clinical trials has been incorporated. Thus, this review will provide insights for the synthetic as well as medicinal chemist for the designing and synthesis of novel oxindole derivatives with novel improved range of pharmacological implications.
Collapse
Affiliation(s)
- Maninder Kaur
- Molecular Modeling Lab, Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India
| | - Manjinder Singh
- Molecular Modeling Lab, Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India
| | - Navriti Chadha
- Molecular Modeling Lab, Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India
| | - Om Silakari
- Molecular Modeling Lab, Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India.
| |
Collapse
|
9
|
Singh S, Saquib M, Singh M, Tiwari J, Tufail F, Singh J, Singh J. A catalyst free, multicomponent-tandem, facile synthesis of pyrido[2,3-d]pyrimidines using glycerol as a recyclable promoting medium. NEW J CHEM 2016. [DOI: 10.1039/c5nj01938a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient and green, one-pot synthesis of pyrido[2,3-d]pyrimidines, a biologically important heterocyclic scaffold, using glycerol as a promoter cum solvent.
Collapse
Affiliation(s)
- Swastika Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Mohammad Saquib
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Mandavi Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Jyoti Tiwari
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Fatima Tufail
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Jaya Singh
- Department of Chemistry
- LRPG College
- Ghaziabad-201005
- India
| | - Jagdamba Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| |
Collapse
|
10
|
Rai P, Srivastava M, Yadav S, Singh J, Singh J. β-Cyclodextrin: A Biomimetic Catalyst used for the Synthesis of 4H-chromene-3-carbonitrile and Tetrahydro-1H-xanthen-1-one Derivatives. Catal Letters 2015. [DOI: 10.1007/s10562-015-1588-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
11
|
Singh S, Saquib M, Singh SB, Singh M, Singh J. Catalyst free, multicomponent-tandem synthesis of spirooxindole-indazolones and spirooxindole-pyrazolines: a glycerol mediated green approach. RSC Adv 2015. [DOI: 10.1039/c5ra02794b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The development of a versatile new one pot, catalyst free, multicomponent-tandem strategy for assembly of spirooxindole-indazolones and spirooxindole-pyrazolines is described.
Collapse
Affiliation(s)
- Swastika Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Mohammad Saquib
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | | | - Mandavi Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Jagdamba Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| |
Collapse
|
12
|
|
13
|
Organocatalysis in aqueous micellar medium: a new protocol for the synthesis of [1,2,4]-triazolyl-thiazolidinones. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.09.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
14
|
Shen M, Wang J, Shang S, Song Z. A Simple and Efficient Procedure for the One-pot Three-component Synthesis of Spiro[indoline-3,9′-tetrazolo[5,1- b]quinazoline]-2,8′(5′ H)-dione in PEG–H 2O Medium. CHEM LETT 2014. [DOI: 10.1246/cl.140186] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Minggui Shen
- Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. on Forest Chemical Engineering, SFA; Key Lab of Biomass Energy and Material, Jiangsu Province
- Institute of New Technology of Forestry, CAF
| | - Juan Wang
- Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. on Forest Chemical Engineering, SFA; Key Lab of Biomass Energy and Material, Jiangsu Province
| | - Shibin Shang
- Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. on Forest Chemical Engineering, SFA; Key Lab of Biomass Energy and Material, Jiangsu Province
- Institute of New Technology of Forestry, CAF
| | - Zhanqian Song
- Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. on Forest Chemical Engineering, SFA; Key Lab of Biomass Energy and Material, Jiangsu Province
- Institute of New Technology of Forestry, CAF
| |
Collapse
|
15
|
Fatma S, Singh D, Ankit P, Mishra P, Singh M, Singh J. An eco-compatible multicomponent strategy for the synthesis of new 2-amino-6-(1H-indol-3-yl)-4-arylpyridine-3,5-dicarbonitriles in aqueous micellar medium promoted by thiamine-hydrochloride. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.02.050] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
16
|
Karmakar R, Kayal U, Bhattacharya B, Maiti G. One-pot three-component reaction for the synthesis of biologically important spiro[benzo[f]quinoline-3,3′-indoline] derivatives. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
17
|
Kolosov MA, Al-Ogaili MJK, Parkhomenko VS, Orlov VD. Synthesis and Alkylation of Diethyl 6-Aryl-2-Oxo-1,2,3,6-Tetrahydropyrimidine-4,5-Dicarboxylates. Chem Heterocycl Compd (N Y) 2014. [DOI: 10.1007/s10593-014-1399-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
18
|
Rai P, Srivastava M, Singh J, Singh J. Chitosan/ionic liquid forms a renewable and reusable catalyst system used for the synthesis of highly functionalized spiro derivatives. NEW J CHEM 2014. [DOI: 10.1039/c3nj01545a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
19
|
Boric acid in aqueous micellar medium: an effective and recyclable catalytic system for the synthesis of aryl-7,8-dihydro[1,2,4]triazolo[4,3-a]pyrimidine-6-carbonitriles. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.11.090] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
20
|
Singh M, Singh SB, Fatma S, Ankit P, Singh J. Development of five membered heterocyclic frameworks via [3+2] cycloaddition reaction in an aqueous micellar system. NEW J CHEM 2014. [DOI: 10.1039/c4nj00325j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of novel dihydropyrrolo[2,1-a]isoquinolines and dihydropyrrolo[1,2-a]quinolines have been synthesized from isoquinolines/quinolines, various substituted phenacyl bromides and substituted dialkylacetylenedicarboxylates via [3+2] cycloaddition reaction.
Collapse
Affiliation(s)
- Mandavi Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002, India
| | - Shyam Babu Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002, India
| | - Shahin Fatma
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002, India
| | - Preyas Ankit
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002, India
| | - Jagdamba Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002, India
| |
Collapse
|
21
|
Kataev EA, Müller C. Recent advances in molecular recognition in water: artificial receptors and supramolecular catalysis. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.11.010] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
22
|
Rai P, Srivastava M, Singh J, Singh J. An eco-efficient, domino synthesis of highly functionalized spiro-oxindole derivatives catalyzed by an organocatalyst in an aqueous medium. RSC Adv 2013. [DOI: 10.1039/c3ra43023e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|