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1
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Yadav AK, Mishra BK, Singh A, Gour NK. Atmospheric degradation, mechanism and kinetics of ethyl vinyl ketone (CH 2=CHCOCH 2CH 3) initiated by Cl atom: an insight from DFT study. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2100835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
| | | | - Ashutosh Singh
- Department of Chemistry, K.S. Saket PG College, Ayodhya, India
| | - Nand Kishor Gour
- Department of Chemical Sciences, Tezpur University, Tezpur, India
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2
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Ren H, Zhu G, Li J, Yang J. Atmospheric chemistry of sevoflurane radical: A degradation reaction mechanism in the presence of NO from a theoretical perspective. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113706] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Wang Y, Ming XX, Zhang CP. Fluorine-Containing Inhalation Anesthetics: Chemistry, Properties and Pharmacology. Curr Med Chem 2020; 27:5599-5652. [DOI: 10.2174/0929867326666191003155703] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 08/27/2019] [Accepted: 09/05/2019] [Indexed: 02/07/2023]
Abstract
Studies on fluorinated inhalation anesthetics, including synthesis, physical chemistry and
pharmacology, have been summarized in this review. Retrospecting the history of inhalation anesthetics
revealed their increasing reliance on fluorine and ether structures. Halothane causes a rare but
severe immune-based hepatotoxicity, which was replaced by enflurane in the 1970s. Isoflurane replaced
enflurane in the 1980s, showing modest advantages (e.g. lower solubility, better metabolic
stability, and without convulsive predisposition). Desflurane and sevoflurane came into use in the
1990s, which are better anesthetics than isoflurane (less hepatotoxicity, lower solubility, and/or
markedly decreased pungency). However, they are still less than perfect. To gain more ideal inhalation
anesthetics, a large number of fluorinated halocarbons, polyfluorocycloalkanes, polyfluorocycloalkenes,
fluoroarenes, and polyfluorooxetanes, were prepared and their potency and toxicity were
evaluated. Although the pharmacology studies suggested that some of these agents produced anesthesia,
no further studies were continued on these compounds because they showed obvious lacking
as anesthetics. Moreover, the anesthetic activity cannot be simply predicted from the molecular
structures but has to be inferred from the experiments. Several regularities were found by experimental
studies: 1) the potency and toxicity of the saturated linear chain halogenated ether are enhanced
when its molecular weight is increased; 2) the margin of safety decreases and the recovery
time is prolonged when the boiling point of the candidate increases; and 3) compounds with an
asymmetric carbon terminal exhibit good anesthesia. Nevertheless, the development of new inhalation
anesthetics, better than desflurane and sevoflurane, is still challenging not only because of the
poor structure/activity relationship known so far but also due to synthetic issues.
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Affiliation(s)
- Yuzhong Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan 430079, China
| | - Xiao-Xia Ming
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China
| | - Cheng-Pan Zhang
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China
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4
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Begum SS, Deka RC, Gour NK. Theoretical prediction of the mechanistic pathways and kinetics of methylcyclohexane initiated by OH radicals. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1436202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
| | | | - Nand Kishor Gour
- Department of Chemical Sciences, Tezpur University, Tezpur, India
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5
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Computational study on night-time reaction of 1, 1-Dichlorodimethylether (DCDME) CH3OCHCl2 with NO3 radical and the fortuity of alkoxy radical CH3OC(O )Cl2. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.04.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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Paul S, Deka RC, Gour NK. Quantum chemical study on the reaction mechanism and kinetics of Cl-initiated oxidation of methyl n-propyl ether. Theor Chem Acc 2018. [DOI: 10.1007/s00214-018-2239-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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7
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Ren H, Li X, Qu Y, Li F. Theoretical investigation on H abstraction reaction mechanisms and rate constants of sevoflurane with the OH radical. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2017.12.059] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Bai FY, Sun G, Wang X, Sun YQ, Wang RS, Pan XM. Theoretical Study on the Reactions of (CF3)2CFOCH3 + OH/Cl and Reaction of (CF3)2CFOCHO with Cl Atom. J Phys Chem A 2015; 119:1256-66. [DOI: 10.1021/jp5125553] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Feng-Yang Bai
- Institute
of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, 130024 Changchun, People’s Republic of China
| | - Gang Sun
- Department
of Chemistry and Biology, Bei Hua University, 132013 Jilin, People’s Republic of China
| | - Xu Wang
- Institute
of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, 130024 Changchun, People’s Republic of China
| | - Yan-Qiu Sun
- Institute
of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, 130024 Changchun, People’s Republic of China
| | - Rong-Shun Wang
- Institute
of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, 130024 Changchun, People’s Republic of China
| | - Xiu-Mei Pan
- Institute
of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, 130024 Changchun, People’s Republic of China
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Mishra BK, Lily M, Chandra AK, Deka RC. Theoretical studies on atmospheric chemistry of HFE-347mcc3: reactions with OH radicals and Cl atoms. J PHYS ORG CHEM 2014. [DOI: 10.1002/poc.3340] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | - Makroni Lily
- Department of Chemistry; North - Eastern Hill University; Shillong 793 022 India
| | - Asit K. Chandra
- Department of Chemistry; North - Eastern Hill University; Shillong 793 022 India
| | - Ramesh Chandra Deka
- Department of Chemical Sciences; Tezpur University Tezpur; Assam 784 028 India
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10
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Wang C, Wen J, He H, Wang L. A theoretical study on the mechanism and dynamics of reactions (CF3)2CHOCH2F/(CF3)2CHOCHF2with OH radical. Mol Phys 2014. [DOI: 10.1080/00268976.2014.925148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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The hydrogen abstraction reaction mechanism and rate constants from 200K to 2000K between sevoflurane and chlorine atom: A theoretical investigation. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.04.058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Begum S, Subramanian R. Reaction of chlorine radical with tetrahydrofuran: a theoretical investigation on mechanism and reactivity in gas phase. J Mol Model 2014; 20:2262. [PMID: 24867438 DOI: 10.1007/s00894-014-2262-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 04/23/2014] [Indexed: 10/25/2022]
Abstract
Reaction of chlorine (Cl) radical with heterocyclic saturated ether, tetrahydrofuran has been studied. The detailed reactivity and mechanism of this reaction is analyzed using hybrid density functional theory (DFT), B3LYP and BB1K methods, and aug-cc-pVTZ basis set. To explore the mechanism of the reaction of tetrahydrofuran with Cl radical, four possible sites of hydrogen atom (H) abstraction pathways in tetrahydrofuran were analyzed. The barrier height and rate constants are calculated for the four H-abstraction channels. The BB1K calculated rate constant for α-axial H-abstraction is comparable with the experimentally determined rate constant. It reflects that α-axial H-abstraction is the main degradation pathway of tetrahydrofuran with Cl radical. DFT-based reactivity descriptors are also calculated and these values describe α-axial H-abstraction as the main reaction channel.
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Affiliation(s)
- Samiyara Begum
- Department of Chemistry, Indian Institute of Technology, Patna, India, 800013
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Mishra BK, Lily M, Chakrabartty AK, Bhattacharjee D, Deka RC, Chandra AK. Theoretical investigation of atmospheric chemistry of volatile anaesthetic sevoflurane: reactions with the OH radicals and atmospheric fate of the alkoxy radical (CF3)2CHOCHFO: thermal decomposition vs. oxidation. NEW J CHEM 2014. [DOI: 10.1039/c3nj01408h] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction profile (kcal mol−1) for (CF3)2CHOCHFO radical at the M06-2X/6-311++G(d,p) level.
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Affiliation(s)
| | - Makroni Lily
- Department of Chemistry
- North-Eastern Hill University
- Shillong, India
| | | | | | | | - Asit K. Chandra
- Department of Chemistry
- North-Eastern Hill University
- Shillong, India
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