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A strategic approach for synthesis of benzimidazo[2,1-b]thiazolidinone appended dispirooxindole hybrids via [3 + 2] cycloaddition using fluoro-ethanol as solvent. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sathi V, Thomas NV, Deepthi A. Stereoselective synthesis of dispiro heterocycles by [3 + 2] cycloaddition of azomethine ylides with a thiazolo[3,2- a]indole derivative. Org Biomol Chem 2020; 18:7822-7826. [PMID: 32986053 DOI: 10.1039/d0ob01559h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A green one pot three component [3 + 2] cycloaddition of a thiazolo[3,2-a]indole derivative (generated by the reaction of thieno[2,3-b]indole-2,3-dione and dimethyl acetylenedicarboxylate) with isatin derived azomethine ylides is reported here. An eco-friendly acetyl choline iodide-ethylene glycol (ACI/EG)-mediated deep eutectic solvent system was adopted for the reaction. Spiropyrrolidine oxindoles incorporating multiple stereocenters were obtained in a highly diastereoselective manner in excellent yields.
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Affiliation(s)
- Vidya Sathi
- Department of Chemistry, University of Kerala, Kariavattom, Thiruvananthapuram, 695581, Kerala State, India.
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3
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Hartwig D, Nascimento JE, Bettanin L, Aquino TFB, Jacob RG, Lenardão EJ. Deep Eutectic Solvents: An Alternative Medium for the Preparation of Organosulfur Compounds. CURRENT GREEN CHEMISTRY 2020. [DOI: 10.2174/2213346107999200616110434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Deep Eutectic Solvent (DES) as a “green solvent” has been used as an alternative to replace
Volatile Organic Compounds (VOCs) and traditional Ionic Liquids (ILs). In recent years, DES has
gained much attention due to its excellent properties such as low cost, easy preparation, high viscosity,
low vapor pressure, low volatility, high thermal stability, biodegradability and non-toxicity, among
others. Other classes of compounds with increased interest are organosulfur compounds due to their
applicability as synthetic intermediates in organic reactions and their high importance in pharmaceutical
and agrochemical industries. This review describes the recent advances in the preparation of organosulfur
compounds using DES as an alternative solvent, focusing on several types of organic reactions,
including aromatic substitution reactions (SNAr), condensation, cyclocondensation, cyclization,
ring-opening, thia-Michael addition, one-pot reactions and heterocyclodehydrations.
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Affiliation(s)
- Daniela Hartwig
- Laboratorio de Síntese Organica Limpa – LASOL, CCQFA, Universidade Federal de Pelotas – UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
| | - José E.R. Nascimento
- Laboratorio de Síntese Organica Limpa – LASOL, CCQFA, Universidade Federal de Pelotas – UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
| | - Luana Bettanin
- Laboratorio de Síntese Organica Limpa – LASOL, CCQFA, Universidade Federal de Pelotas – UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
| | - Thalita F. B. Aquino
- Laboratorio de Síntese Organica Limpa – LASOL, CCQFA, Universidade Federal de Pelotas – UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
| | - Raquel G. Jacob
- Laboratorio de Síntese Organica Limpa – LASOL, CCQFA, Universidade Federal de Pelotas – UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
| | - Eder J. Lenardão
- Laboratorio de Síntese Organica Limpa – LASOL, CCQFA, Universidade Federal de Pelotas – UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
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Singh R, Saini MR, Bhardwaj D, Singh A. An expedient synthesis of new imino-thiazolidinone grafted dispiro-pyrrolidine-oxindole/indeno hybrids via a multicomponent [3+2] cycloaddition reaction in a deep eutectic solvent. NEW J CHEM 2020. [DOI: 10.1039/d0nj00801j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A facile and selective synthesis of novel factionalized dispiro-pyrrolidines via a three component [3+2] cycloaddition reaction using a deep eutectic solvent.
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Affiliation(s)
- Ruby Singh
- Department of Chemistry
- School of Basic Sciences
- Jaipur National University
- Jaipur
- India
| | - Munna Ram Saini
- Department of Chemistry
- School of Basic Sciences
- Jaipur National University
- Jaipur
- India
| | - Diksha Bhardwaj
- Department of Chemistry
- School of Basic Sciences
- Jaipur National University
- Jaipur
- India
| | - Aakash Singh
- Department of Chemistry
- School of Basic Sciences
- Jaipur National University
- Jaipur
- India
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