Academic literature on the topic 'Chloroformate'

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Journal articles on the topic "Chloroformate"

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Bui, Cuong Viet, Thomas Rosenau, and Hubert Hettegger. "Synthesis of Polyanionic Cellulose Carbamates by Homogeneous Aminolysis in an Ionic Liquid/DMF Medium." Molecules 27, no. 4 (2022): 1384. http://dx.doi.org/10.3390/molecules27041384.

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Polyanionic cellulose carbamates were synthesized by rapid and efficient homogeneous aminolysis of cellulose carbonate half-esters in an ionic liquid/DMF medium. Cellulose bis-2,3-O-(3,5-dimethylphenyl carbamate), as a model compound, reacted with different chloroformates to cellulose carbonates. These intermediates were subjected to aminolysis, for which both the reactivity of different chloroformates towards C6-OH and the reactivity/suitability of the respective carbonate half-ester in the aminolysis were comprehensively studied. Phenyl chloroformate and 4-chlorophenyl chloroformate readily
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Kotadiya, Vipul C., Denish J. Viradiya, Bharat H. Baria, Jayendra S. Kanzariya, Rajesh Kakadiya, and Anamik Shah. "Novel Conversion of 4-Aminoquinolines to New Tricyclic (R,S)-3-Methylazeto[3,2-c] Quinolin-2(2aH)-Ones and Versatile One Step Synthesis of N-(Quinolin-4-yl) Carbamates from 4-Aminoquinolines." International Letters of Chemistry, Physics and Astronomy 30 (March 2014): 265–76. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.30.265.

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Reaction of 4-aminoquinolines with 4-nitrophenyl chloroformate have resulted in finding a novel transformation of 4-aminoquinolines to tricyclic (R,S)-3-methylazeto[3,2-c]quinolin-2(2aH)-ones. The structure of azeto-quinolinone was determined via spectroscopic and chemical methods. Various alcohols were used as nucleophiles to open the 1-azetinone ring to give the corresponding N-(quinolin-4-yl)carbamates in good yields. We also found a new and versatile one step synthesis of N-(quinolin-4-yl)carbamates by reacting 4-aminoquinolines with alkyl chloroformates in the presence of anhyd K2CO3 in a
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Kotadiya, Vipul C., Denish J. Viradiya, Bharat H. Baria, Jayendra S. Kanzariya, Rajesh Kakadiya, and Anamik Shah. "Novel Conversion of 4-Aminoquinolines to New Tricyclic (<i>R,S</i>)-3-Methylazeto[3,2-<i>c</i>] Quinolin-2(2a<i>H</i>)-Ones and Versatile One Step Synthesis of <i>N</i>-(Quinolin-4-yl) Carbamates from 4-Aminoquinolines." International Letters of Chemistry, Physics and Astronomy 30 (March 12, 2014): 265–76. http://dx.doi.org/10.56431/p-m77036.

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Reaction of 4-aminoquinolines with 4-nitrophenyl chloroformate have resulted in finding a novel transformation of 4-aminoquinolines to tricyclic (R,S)-3-methylazeto[3,2-c]quinolin-2(2aH)-ones. The structure of azeto-quinolinone was determined via spectroscopic and chemical methods. Various alcohols were used as nucleophiles to open the 1-azetinone ring to give the corresponding N-(quinolin-4-yl)carbamates in good yields. We also found a new and versatile one step synthesis of N-(quinolin-4-yl)carbamates by reacting 4-aminoquinolines with alkyl chloroformates in the presence of anhyd K2CO3 in a
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Exner, Otto, and Pavel Fiedler. "Conformation and electronic structure of aromatic chloroformates." Collection of Czechoslovak Chemical Communications 52, no. 4 (1987): 970–79. http://dx.doi.org/10.1135/cccc19870970.

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Aromatic chloroformates Ib-Ie were shown to exist in the ap conformation, in agreement with aliphatic chloroformates, i.e. the alkyl group is situated cis to the carbonyl oxygen atom as it is the case in all esters. While 4-nitrophenyl chloroformate (Ie) is in this conformation in crystal, in solution at most several tenths of percent of the sp conformation may be populated at room temperature and in nonpolar solvents only. A new analysis of dipole moments explained the previous puzzling results and demonstrated the impossibility to determine the conformation by this single method, in conseque
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D’Souza, Malcolm J., Jasbir K. Deol, Maryeah T. Pavey, and Dennis N. Kevill. "Statistical Methods for the Investigation of Solvolysis Mechanisms Illustrated by the Chlorides of the Carbomethoxy Protecting Groups NVOC and FMOC." Journal of Analytical Methods in Chemistry 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/941638.

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The solvolysis of 4,5-dimethoxy-2-nitrobenzyl chloroformate (NVOC-Cl,1) is followed at 25.0°C in twenty hydroxylic solvents. A comparison with previously published rates for benzyl chloroformate andp-nitrobenzyl chloroformate indicates that the inductive effect of the nitro and the two methoxy groups strongly influences the rate of reaction. For1, the specific rates of solvolysis are correlated using an extended Grunwald-Winstein (G-W) treatment. A direct comparison with the data for phenyl chloroformate (PhOCOCl) in identical solvents strongly suggests that the addition step within an additio
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Bowman, Mark P., R. A. Olofson, Jean Pierre Senet, and Thierry Malfroot. "2,2-Dichlorovinyl chloroformate." Journal of Organic Chemistry 55, no. 7 (1990): 2240–43. http://dx.doi.org/10.1021/jo00294a050.

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Boivin, Sylviane, Patrick Hemery, and Sylvie Boileau. "Polymérisation du chloroformiate de vinyle et de ses dérivés." Canadian Journal of Chemistry 63, no. 6 (1985): 1337–43. http://dx.doi.org/10.1139/v85-227.

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The free-radical polymerization of vinyl chloroformate has been studied in methylene chloride at 35 °C using dicyclohexyl peroxydicarbonate as initiator. Kinetic measurements performed by dilatometry under high vacuum have shown that the reaction order in monomer is equal to one whereas that in catalyst is equal to 0.5.New polymers have been prepared either by free-radical polymerization of monomers derived from vinyl chloroformate or by chemical modification of poly(vinyl chloroformate) with amines, alcohols, thiols, carboxylic acids, KCN … using phase transfer catalysis. The structure of the
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Pavlovic, Radmila, Antonio Biondi, Maria Chiesa, Natasa Trutic, Mirjana Abramovic, and Enzo Santaniello. "Different behavior of 3-nitrotyrosine and tyrosine toward perfluorinated reagents suitable for one-step preparation of volatile derivatives." Journal of the Serbian Chemical Society 77, no. 5 (2012): 667–83. http://dx.doi.org/10.2298/jsc110304003p.

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In view to develop a gas-chromatographic (GC) determination of the 3-nitrotyrosine (NY)/tyrosine (Y) ratio as a marker of nitro-oxidative stress, different reagents were tested with the objective of obtaining a single volatile fluorinated product for each amino acid by a one-step derivatization procedure. The heptafluorobutyric anhydride (HFBA) /heptafluorobutanol (HFBOH) mixture proved unsuccessful for NY and Y simultaneous analysis. The reaction with different chloroformates [isobutyl chlorofomate (iBuCF) and ethyl chloroformate (EtCF)] in the presence of different perfluorinated alcohols su
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D’Souza, Malcolm J., Jeremy Wirick, Osama Mahmoud, Dennis N. Kevill, and Jin Burm Kyong. "The Influence of a Terminal Chlorine Substituent on the Kinetics and the Mechanism of the Solvolyses of n-Alkyl Chloroformates in Hydroxylic Solvents." International Journal of Molecular Sciences 21, no. 12 (2020): 4387. http://dx.doi.org/10.3390/ijms21124387.

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A previous study of the effect of a 2-chloro substituent on the rates and the mechanisms of the solvolysis of ethyl chloroformate is extended to the effect of a 3-chloro substituent on the previously studied solvolysis of propyl chloroformate and to the effect of a 4-chloro substituent on the here reported rates of solvolysis of butyl chloroformate. In each comparison, the influence of the chloro substituent is shown to be nicely consistent with the proposal, largely based on the application of the extended Grunwald–Winstein equation, of an addition-elimination mechanism for solvolysis in the
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Bryant Jnr, G. L., and J. A. King Jnr. "4,4'-Isopropylidenediphenyl bis(chloroformate)." Acta Crystallographica Section C Crystal Structure Communications 50, no. 7 (1994): 1106–8. http://dx.doi.org/10.1107/s0108270193011084.

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Dissertations / Theses on the topic "Chloroformate"

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Nakovich, Laura. "Analysis of Biogenic Amines by GC/FID and GC/MS." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/35027.

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Low levels of biogenic amines occur naturally, but high levels (FDA sets 50 ppm of histamine in fish as the maximum allowable level) can lead to scombroid poisoning. Amines in general are difficult to analyze by Gas Chromatography (GC) due to their lack of volatility and their interaction with the GC column, often leading to significant tailing and poor reproducibility. Biogenic amines need to be derivatized before both GC and HPLC analyses. The objective of this research was to develop a relatively fast, reproducible method to derivatize and quantitate biogenic amines in fish at trace
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Garside, Daniel Mark. "A precolumn derivatization procedure for the analysis of marine amino acids with 9-fluorenylmethyl chloroformate and high performance liquid chromatography." Master's thesis, University of Cape Town, 1986. http://hdl.handle.net/11427/17624.

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Include bibliography.<br>The separation of 20 amino acids has been achieved by gradient elution and reversed phase high performance liquid chromatography employing 9-fluorenylmethyl chloroformate as the precolumn derivatizing reagent. The application of this technique to assess the extent of marine bacterial uptake of amino acids released from kelp has also been determined. The problem of excess reagent reacting with water to form a hydrolysis product has largely been overcome. Pentane extraction of the reagent after amino acid reaction caused the loss of less polar amino acid derivatives. Oth
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Stefanello, Eliezer. "Estudo dos efeitos tóxicos de antraceno sobre a microalga Chlamydomonas reinhardtii." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/46/46131/tde-07122015-112524/.

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A produção e emissão de poluentes é geralmente derivada da alta atividade humana, por meio da utilização dos recursos naturais, desenvolvimento de infraestrutura e construção, atividades agrícolas, desenvolvimento industrial, urbanização, turismo e uma série de outras atividades. Poluente é tudo o que é introduzido pelo homem, de forma direta ou indireta, de substâncias ou energia que resultem ou possam resultar em efeitos adversos a vida. As principais classes de poluentes são os pesticidas, poluentes orgânicos, nutrientes, óleos, isótopos radioativos, metais pesados, patogênicos, sedimentare
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Bochard, Frédérique. "Réactivité des chloroformiates en présence de chlorure d'hexaalkylguanidinium, supporté ou non, comme catalyseur." Lyon 1, 1996. http://www.theses.fr/1996LYO10232.

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Afin d'etudier la reactivite des chloroformiates en presence de chlorure d'hexabutylguanidinium supporte sur silice macroporeuse (sigcl) ou non (gcl), nous avons, dans un premier temps, realise une etude cinetique de la decomposition des chloroformiates aliphatiques en chlorures et des chloroformiates aromatiques en carbonates. La comparaison avec des chlorures d'ammonium et de phosphonium a confirme la meilleure activite catalytique de gcl. Une etude mecanistique a partir de chloroformiates optiquement actifs a ensuite montre que gcl decompose le (s)-chloroformiate de 2-octyle avec une excell
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Zeggaf, Choukri. "Nouvelles applications du chloroformiate d'isopropényle dans la chimie des amino acides." Montpellier 2, 1987. http://www.theses.fr/1987MON20059.

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Zeggaf, Choukri. "Nouvelles applications du chloroformiate d'isopropenyle dans la chimie des amino-acides." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376109064.

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Thilmont, Nadine. "Préparation catalytique de chlorofluorocarbures hydrogènes, dérivés du méthyl chloroforme." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37618890h.

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Camou, Jean-Marc. "La photooximation du cyclododécane dans le chloroforme. : Réactivité du trichloronitrosométhane." Pau, 1999. http://www.theses.fr/1999PAUU3039.

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La réaction de photooximation des alcanes par le chlorure de nitrosyle (NOC1)est utilisés industriellement par les sociétés Elf Atochem et Toyo Rayon pour synthétiser les monomères des polyamides 6 et 12. L'objectif de notre travail était d'étudier la faisabilité de la réaction de photooximation du cyclododécane dans un nouveau solvant : le chloroforme. Malheureusement, ce solvant n'est pas inerte vis-à vis du NOC1 et conduit à la formation de trichloronitrosométhane (TNM), de formule brute CC3NO en présence de lumière. Par conséquent, outre la faisabilité de la réaction dans le chloroforme, n
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Louvet, Jouen Sophie. "Étude par diffusion centrale des neutrons et des rayons X de micelles inverses et de micelles mixtes formées par des tensioactifs dérivés du sucre." Rouen, 2001. http://www.theses.fr/2001ROUES029.

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Cette thèse concerne l'étude de tensioactifs dérivés des sucres en vue de fabriquer de nouveaux milieux réactifs dans le chloroforme pour remplacer l'AOT ou de solubiliser les membranes lipidiques, étape importante dans l'extraction des protéines membranaires. La forme et la taille des micelles inverses et des micelles mixtes ont été étudiées par diffusion centrale des neutrons au LLB (CEA - Saclay) et des rayons X au LURE (Orsay). Les micelles inverses ont été préparées à partir de trois tensioactifs disaccharides bicaténaires (lactitol, cellobitol et maltitol), dont la tête polaire est dériv
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Kouhen, Ahmed El. "Exitons vibrationnels dans les agrégats moléculaires ordonnés de cristaux mixtes isotopiques application au système chloroforme-deutérochloroforme." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37598789h.

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Books on the topic "Chloroformate"

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Canada, Canada Environnement. Chloroforme. Environnement Canada, 2001.

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Shrestha-Dawadi, Prativa Bade. The intermediacy of nitrilium salts in the Beckmann rearrangement ; Synthesis of nitrilium salts from nitriles and chloroformates ; Preparation of 3,4,5-trisubstituted 1,2,4-oxadiazolium salts from nitrilium salts and nitrile oxides. Hartung-Gorre, 1993.

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DUTERTRE-E. De l'Emploi du chloroforme dans les accouchements naturels. Hachette Livre - BNF, 2018.

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NARANJO-A. De l'Action physiologique du chloroforme et de son application aux accouchements. HACHETTE BNF, 2018.

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Chloroform. Environment Canada, 2001.

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Chloroform (Environmental Health Criteria , No 163). World Health Organisation, 1994.

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Book chapters on the topic "Chloroformate"

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Yamada, Keita. "9-Fluorenylmethyl Chloroformate Labeling for O-Glycan Analysis." In Methods in Molecular Biology. Springer US, 2024. http://dx.doi.org/10.1007/978-1-0716-3670-1_14.

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Boivin, S., P. Hemery, and S. Boileau. "Chemical Modification of Poly(vinyl chloroformate) by Phenol Using Phase-Transfer Catalysis." In ACS Symposium Series. American Chemical Society, 1988. http://dx.doi.org/10.1021/bk-1988-0364.ch003.

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Šimek, Petr, Petr Hušek, and Helena Zahradníčková. "Heptafluorobutyl Chloroformate-Based Sample Preparation Protocol for Chiral and Nonchiral Amino Acid Analysis by Gas Chromatography." In Methods in Molecular Biology. Humana Press, 2011. http://dx.doi.org/10.1007/978-1-61779-445-2_13.

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Kvitvang, Hans Fredrik Nyvold, Kåre A. Kristiansen, Stina K. Lien, and Per Bruheim. "Quantitative Analysis of Amino and Organic Acids by Methyl Chloroformate Derivatization and GC-MS/MS Analysis." In Methods in Molecular Biology. Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4939-1258-2_10.

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Saito, K., A. Oda, and K. Tokinaga. "High-Temperature Unimolecular Decomposition of Ethyl Chloroformate: Comparison of the Secondary Competing Steps with Ethyl Formate." In Shock Waves @ Marseille II. Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-78832-1_20.

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Hušek, Petr, Zdeněk Švagera, Dagmar Hanzlíková, et al. "GC-MS Metabolomic Profiling of Protic Metabolites Following Heptafluorobutyl Chloroformate Mediated Dispersive Liquid Microextraction Sample Preparation Protocol." In Methods in Molecular Biology. Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-7643-0_11.

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Dettmer, Katja, Axel P. Stevens, Stephan R. Fagerer, Hannelore Kaspar, and Peter J. Oefner. "Amino Acid Analysis in Physiological Samples by GC-MS with Propyl Chloroformate Derivatization and iTRAQ-LC-MS/MS." In Methods in Molecular Biology. Springer New York, 2019. http://dx.doi.org/10.1007/978-1-4939-9639-1_14.

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Šimek, Petr, Petr Hušek, and Helena Zahradníčková. "Heptafluorobutyl Chloroformate-Based Sample Preparation Protocol for Nonchiral and Chiral Amino Acid Analysis by Gas Chromatography-Mass Spectrometry." In Methods in Molecular Biology. Springer New York, 2019. http://dx.doi.org/10.1007/978-1-4939-9639-1_18.

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Dettmer, Katja, Axel P. Stevens, Stephan R. Fagerer, Hannelore Kaspar, and Peter J. Oefner. "Amino Acid Analysis in Physiological Samples by GC–MS with Propyl Chloroformate Derivatization and iTRAQ–LC–MS/MS." In Methods in Molecular Biology. Humana Press, 2011. http://dx.doi.org/10.1007/978-1-61779-445-2_15.

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Cooper, J. D. H., D. C. Turnell, B. Green, D. Demarais, and P. Rasquin. "The Analysis of Primary and Secondary Free Amino Acids in Biological Fluids: A Completely Automated Process Using On-Line Membrane Sample Preparation, Pre-Column Derivatisation with O-Phthalaldehyde, 9-Fluorenyl Methyl Chloroformate and High Performance Liquid Chromatographic Separations." In Sample Preparation for Biomedical and Environmental Analysis. Springer US, 1994. http://dx.doi.org/10.1007/978-1-4899-1328-9_9.

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Conference papers on the topic "Chloroformate"

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Kirollos, K., G. M. Mihaylov, and B. W. Nurney. "383. Direct Read Monitoring System for Phosgene and Chloroformates." In AIHce 1996 - Health Care Industries Papers. AIHA, 1999. http://dx.doi.org/10.3320/1.2765062.

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MOHSIN, Doaa Hadi, and Zahraa Hameed KAMIL. "SYNTHESIS AND CHARACTERIZATION OF SOME NEW 1,3-OXAZEPINE COMPOUNDS." In III.International Scientific Congress of Pure,Appliedand Technological Sciences. Rimar Academy, 2021. http://dx.doi.org/10.47832/minarcongress3-3.

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In this study, bis imines were synthesized by reacting aldehyde with diamine in the presence of chloroformat (55-60˚C). In moderate yield (78-82) %, and then used in the preparation of 1, 3-Oxazepine compounds by reacting with phathalic anhydridein Benzene at (80-85 ˚C). In moderate yield (83-88) %.These vehicles have been verified using(FT-IR). Key words: Characterization, Compound, Oxazepine.
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