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Harifi-Mood AR, Faramarzi F, Mehrabi Y. Investigation of Solvent Effects on the Reaction of 1-Fluoro-2,4-Dinitrobenzene with Aniline in Molecular-Molecular and Ionic Liquid–Molecular Solvent Mixtures. PROGRESS IN REACTION KINETICS AND MECHANISM 2015. [DOI: 10.3184/146867815x14212355041150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The solvent effects on the reaction of 1-fluoro-2,4-dinitrobenzene with aniline was studied in various compositions of molecular-molecular solvent mixtures and molecular solvent-2-hydroxyethylammonium formate mixtures as media containing an ionic liquid. A mounting trend with the mole fraction of water in aqueous solution of alcohols up to a maximum at a mole fraction of 0.9 with respect to water was found, but a mild decrease with the mole fraction of ethyl acetate in methanol–ethyl acetate mixtures. A similar increasing trend was observed with increasing methanol, ethanol, 2-propanol and dimethylsulfoxide content in the mixtures containing the ionic liquid. Solvent effect investigations based on linear free energy relationship confirm that polarity has a major effect in molecular-molecular solvent mixtures, whereas polarity and hydrogen–bond acceptor ability were the dominant factors on reaction rate in molecular-ionic solvent mixtures. A nonlinear free energy relationship based on the preferential solvation hypothesis showed differences between the microsphere solvation of the solute and the bulk composition of the solvents. In these mixtures, the intermediate of the reaction was preferentially solvated by the ionic liquid.
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Affiliation(s)
| | - Farnaz Faramarzi
- Department of Chemistry, Kharazmi University, PO Box 15719-14911, Tehran, Iran
| | - Yousef Mehrabi
- Department of Chemistry, Kharazmi University, PO Box 15719-14911, Tehran, Iran
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Harifi-Mood AR, Rahmati M, Gholami MR. Solvent polarity and hydrogen bond effects on nucleophilic substitution reaction of 2-bromo-5-nitrothiophene with piperidine. INT J CHEM KINET 2011. [DOI: 10.1002/kin.20547] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Solvent effects on the reaction rate and selectivity of synchronous heterogeneous hydrogenation of cyclohexene and acetone in ionic liquid/alcohols mixtures. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcata.2009.02.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Devender T, Manikyamba P. Solvent interactions in the allylation of piperidine. INT J CHEM KINET 2009. [DOI: 10.1002/kin.20410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Vijayabharathi D, Manikyamba P. Linear Solvation Energy Relationship (Lser) in the Allylation of 2-Mercapto-1-Methylimidazole. PROGRESS IN REACTION KINETICS AND MECHANISM 2009. [DOI: 10.3184/146867809x452613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The affect of 16 different protic and aprotic solvents on the rate of reaction between allyl bromide and 2-mercapto-1-methylimidazole has been studied. Correlation of the rate constants with different solvent parameters indicates that the polarity, polarisability, electrophilicity and hydrogen bond donor ability of the solvent simultaneously influence the rate. from regression analysis, information about the mode of solvation of the reactants and the transition state is obtained.
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Habibi-Yangjeh A, Jafari-Tarzanag Y, Banaei AR. Solvent effects on kinetics of an aromatic nucleophilic substitution reaction in mixtures of an ionic liquid with molecular solvents and prediction using artificial neural networks. INT J CHEM KINET 2008. [DOI: 10.1002/kin.20386] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Harifi-Mood AR, Habibi-Yangjeh A, Gholami MR. Solvent effects on kinetics of the reaction between 2-chloro-3,5-dinitropyridine and aniline in aqueous and alcoholic solutions of [bmim]BF4. INT J CHEM KINET 2007. [DOI: 10.1002/kin.20282] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Reddy SR, Kalyani P, Manikyamba P. LSER in the reaction between p-nitrobenzyl bromide and 2-mercaptobenzoxazole. JOURNAL OF CHEMICAL RESEARCH 2006. [DOI: 10.3184/030823406777946626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The reaction between p-nitrobenzyl bromide and 2-mercaptobenzoxazole has been studied by following the conductance of the reaction mixture at different time intervals. The reaction is overall second order, being first order with respect to both [nucleophile] and [substrate]. The reaction is studied in 14 different protic and dipolar aprotic solvents and the second order rate constants are determined. Correlation of rate constants with different solvent parameters indicated that electron pair accepting ability of the solvent (E) and hydrogen bond accepting ability (β) of the solvent simultaneously influence the rate of the reaction.
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Affiliation(s)
| | - Pandrangi Kalyani
- Department of Chemistry, Kakatiya University, Warangal – 506 009, India
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Prediction of Solvent Effects on Rate Constant of [2+2] Cycloaddition Reaction of Diethyl Azodicarboxylate with Ethyl Vinyl Ether Using Artificial Neural Networks. B KOREAN CHEM SOC 2005. [DOI: 10.5012/bkcs.2005.26.1.139] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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