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Hammond OS, Moura L, Level G, Imberti S, Holbrey JD, Blesic M. Hydration of sulfobetaine dizwitterions as a function of alkyl spacer length. Phys Chem Chem Phys 2020; 22:16040-16050. [PMID: 32706356 DOI: 10.1039/d0cp02654a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The solvation and structure of bolaform dizwitterions containing two sulfobetaine moieties in concentrated aqueous solution were determined using neutron diffraction with isotopic substitution (NDIS) combined with modelling of the measured structure factors using Empirical Potential Structure Refinement (EPSR). Strongly directional local hydration was observed in the polar regimes of the dizwitterions with 48-52 water molecules shared between dizwitterion molecules in a first shell water network around each zwitterion pair. Overall, the double zwitterions were highly hydrated, providing experimental evidence in support of the potential formation of protein-resistant hydration layers at zwitterion-water interfaces.
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Affiliation(s)
- Oliver S Hammond
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, BT9 5AG, Northern Ireland, UK.
| | - Leila Moura
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, BT9 5AG, Northern Ireland, UK.
| | - Gaelle Level
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, BT9 5AG, Northern Ireland, UK.
| | - Silvia Imberti
- ISIS, Rutherford Appleton Laboratory, Harwell Science & Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
| | - John D Holbrey
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, BT9 5AG, Northern Ireland, UK.
| | - Marijana Blesic
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, BT9 5AG, Northern Ireland, UK.
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2
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Kaur N. Ionic Liquids: A Versatile Medium for the Synthesis of Six-membered Two Nitrogen- Containing Heterocycles. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666190111152917] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Due to special properties of ILs (ionic liquids) like their wide liquid range, good solvating ability, negligible vapour pressure, non-inflammability, environmentfriendly medium, high thermal stability, easy recycling and rate promoters etc. they are used in organic synthesis. Therefore, ionic liquids have attracted the attention of chemists and act as a catalyst and reaction medium in organic reaction with high activity. There is no doubt that ionic liquids have become a major subject of study for modern chemistry. More publications in the field have been observed each year, although there is some evidence that this is beginning to plateau at approximately 3500 papers each year. They have been the subject of several major reviews and books, dealing with different applications and aspects of their behavior. Highly efficient methods are explored for the preparation of six-membered two nitrogen-containing heterocycles with the application of IL as a catalyst and reaction medium from 1893 to 2018.
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022 (Rajasthan), India
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Karimi H. Copper Zirconium Phosphate as an Efficient Catalyst for Multi-component Reactions in Solvent-Free Conditions. IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY, TRANSACTIONS A: SCIENCE 2018. [DOI: 10.1007/s40995-018-0495-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Heidarizadeh F, Taheri N. Polystyrene-supported basic dicationic ionic liquid as a novel, reusable, and efficient heterogeneous catalyst for the one-pot synthesis of chromene derivatives in water. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2247-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Synthesis of 3,4-dihydropyrimidin-2(1H)-one via one-pot Biginelli reaction under solvent-free conditions. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-015-1505-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6
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Rahmati A, Pashmforoush N. Synthesis of various heterocyclic compounds via multi-component reactions in water. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2014. [DOI: 10.1007/s13738-014-0562-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Alvim HG, Bataglion GA, Ramos LM, de Oliveira AL, de Oliveira HC, Eberlin MN, de Macedo JL, da Silva WA, Neto BA. Task-specific ionic liquid incorporating anionic heteropolyacid-catalyzed Hantzsch and Mannich multicomponent reactions. Ionic liquid effect probed by ESI-MS(/MS). Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.10.033] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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8
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Xie ZB, Wang N, Wu WX, Le ZG, Yu XQ. Trypsin-catalyzed tandem reaction: One-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones by in situ formed acetaldehyde. J Biotechnol 2014; 170:1-5. [DOI: 10.1016/j.jbiotec.2013.10.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 10/16/2013] [Accepted: 10/25/2013] [Indexed: 10/26/2022]
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9
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Nazari S, Saadat S, Fard PK, Gorjizadeh M, Nezhad ER, Afshari M. Imidazole functionalized magnetic Fe3O4 nanoparticles as a novel heterogeneous and efficient catalyst for synthesis of dihydropyrimidinones by Biginelli reaction. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-013-1085-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wang YL, Luo J, Zhi HZ. Preparation of 3,4-dihydropyrimidones via Biginelli reaction in efficient and recyclable PEG1000-DAIL/toluene catalyst-medium combined thermoregulated biphasic system. Chem Res Chin Univ 2013. [DOI: 10.1007/s40242-013-3087-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Eco-friendly synthesis of tetrahydrobenzo[c]xanthenes catalyzed by functional ionic liquid in water. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-013-1057-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Alvim HGO, de Lima TB, de Oliveira HCB, Gozzo FC, de Macedo JL, Abdelnur PV, Silva WA, Neto BAD. Ionic Liquid Effect over the Biginelli Reaction under Homogeneous and Heterogeneous Catalysis. ACS Catal 2013. [DOI: 10.1021/cs400291t] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
| | | | | | - Fabio C. Gozzo
- Institute of Chemistry, University of Campinas, Campinas, SP, Brazil
| | - Julio L. de Macedo
- Laboratory of Catalysis, Institute
of Chemistry, University of Brasília, P. O. Box 4478, CEP 70904970, Brasília, DF, Brasil
| | - Patricia V. Abdelnur
- Embrapa Agroenergia, PqEB s/no Avenida W3 Norte (final), Edifício Embrapa Agroenergia,
CEP: 70770-901, P. O. Box 40315
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Ramos LM, Guido BC, Nobrega CC, Corrêa JR, Silva RG, de Oliveira HCB, Gomes AF, Gozzo FC, Neto BAD. The Biginelli reaction with an imidazolium-tagged recyclable iron catalyst: kinetics, mechanism, and antitumoral activity. Chemistry 2013; 19:4156-68. [PMID: 23460474 DOI: 10.1002/chem.201204314] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Indexed: 11/10/2022]
Abstract
The present work describes the synthesis, characterization, and application of a new ion-tagged iron catalyst. The catalyst was employed in the Biginelli reaction with impressive performance. High yields have been achieved when the reaction was carried out in imidazolium-based ionic liquids (BMI⋅PF6, BMI⋅NTf2, and BMI⋅BF4), thus showing that the ionic-liquid effects play a role in the reaction. Moreover, the ion-tagged catalyst could be recovered and reused up to eight times without any noticeable loss in activity. Mechanistic studies performed by using high-resolution electrospray-ionization quadrupole-time-of-flight mass (HR-EI-QTOF) spectrometry and kinetic experiments indicate only one reaction pathway and rule out the other two possibilities under the development conditions. The theoretical calculations are in accordance with the proposed mechanism of action of the iron catalyst. Finally, the 37 dihydropyrimidinone derivatives, products of the Biginelli reaction, had their cytotoxicity evaluated in assays against MCF-7 cancer cell linages with encouraging results of some derivatives, which were virtually non-toxic against healthy cell linages (fibroblasts).
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Affiliation(s)
- Luciana M Ramos
- Laboratory of Medicinal and Technological Chemistry, University of Brasilia (IQ-UnB), Campus Universitário Darcy Ribeiro, CEP 70904970, P.O.Box 4478, Brasilia-DF, Brazil
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Wang L, Zhou M, Chen Q, He MY. Facile Biginelli-Type Reactions Catalysed by Super Acidic Ionic Liquid under Solvent-Free Conditions. JOURNAL OF CHEMICAL RESEARCH 2012. [DOI: 10.3184/174751912x13518654161237] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
[MeC(OH)2]+ClO4- as a super acidic ionic liquid is an extremely active catalyst for Biginelli-type reactions. The present method is especially effective for the inactive aliphatic aldehydes. The solvent-free conditions, high catalytic activity, wide substrates tolerance and convenient product isolation make the protocol more advantageous.
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Affiliation(s)
- Liang Wang
- Jiangsu Province Key Laboratory of Fine Petro-Chemical Technology, Changzhou University, Changzhou 213164, P. R. China
| | - Min Zhou
- Jiangsu Province Key Laboratory of Fine Petro-Chemical Technology, Changzhou University, Changzhou 213164, P. R. China
| | - Qun Chen
- Jiangsu Province Key Laboratory of Fine Petro-Chemical Technology, Changzhou University, Changzhou 213164, P. R. China
| | - Ming-Yang He
- Jiangsu Province Key Laboratory of Fine Petro-Chemical Technology, Changzhou University, Changzhou 213164, P. R. China
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Ramos LM, Ponce de Leon y Tobio AY, dos Santos MR, de Oliveira HCB, Gomes AF, Gozzo FC, de Oliveira AL, Neto BAD. Mechanistic studies on Lewis acid catalyzed Biginelli reactions in ionic liquids: evidence for the reactive intermediates and the role of the reagents. J Org Chem 2012; 77:10184-93. [PMID: 23101501 DOI: 10.1021/jo301806n] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
This paper describes the use of common Lewis acids supported in imidazolium-based ionic liquids as the catalysts to promote the Biginelli reaction. The ionic liquid effect and the reaction mechanism are discussed on the basis of nuclear magnetic resonance (NMR), electrospray ionization mass spectrometry (ESI-MS), and theoretical calculations. Indeed, the results showed that the ionic medium plays a fundamental role in the synthesis of biologically active dihydropyrimidinones due to the stabilization of the charged intermediates proposed in the mechanism. When conducted in an ionic liquid as solvent, the reaction mechanism is more complex than in other Lewis acid catalyzed Biginelli reactions.
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Affiliation(s)
- Luciana M Ramos
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute, Campus Universitário Darcy Ribeiro, CEP 70904-970, P.O. Box 4478, Brasília DF, Brazil
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A novel amino acid functionalized ionic liquid promoted one-pot solvent-free synthesis of 3,4-dihydropyrimidin-2-(1H)-thiones. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0689-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Mohammad A, Inamuddin D, Akbari-Dadamahaleh S. Application of Ionic Liquids in Multicomponent Reactions. GREEN SOLVENTS II 2012. [PMCID: PMC7122194 DOI: 10.1007/978-94-007-2891-2_12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
This chapter reports the applicability of ionic liquids in the formation of different types of multicomponent reactions. Easy work-up, relatively short reaction times, good to high yields of the desired products, mild reaction conditions, low cost, availability, and reusability of the employed ionic liquids are the striking features of the reported methodologies.
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Affiliation(s)
- Ali Mohammad
- grid.411340.30000000419370765Faculty of Engineering & Technology, Department of Applied Chemistry, Aligarh Muslim University, Aligarh, 202 002 India
| | - Dr. Inamuddin
- grid.411340.30000000419370765Faculty of Engineering & Technology, Department of Applied Chemistry, Aligarh Muslim University, Aligarh, 202 002 India
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