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Journal articles on the topic 'Chloroformate'

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1

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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2

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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3

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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4

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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5

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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6

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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7

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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8

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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9

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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10

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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11

Oliveira dos Reis, Ederson. "2,2,2-Trichloroethyl Chloroformate (TrocCl)." Synlett 2007, no. 9 (2007): 1473–74. http://dx.doi.org/10.1055/s-2007-980374.

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12

Botta, Sofia, Roberta Piacentini, Chiara Cappelletti, et al. "Optimized Ethyl Chloroformate Derivatization Using a Box–Behnken Design for Gas Chromatography–Mass Spectrometry Quantification of Gallic Acid in Wine." Separations 12, no. 7 (2025): 183. https://doi.org/10.3390/separations12070183.

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Gallic acid, a major phenolic compound in wine, significantly influences its sensory profile and health-related properties, making its accurate measurement essential for both enological and nutritional studies. In this context, a derivatization protocol for gallic acid using ethyl chloroformate (ECF) was developed and optimized for GC-MS analysis, with experimental conditions refined through a Box–Behnken Design (BBD). The BBD systematically investigated the effects of three critical reagent volumes: ethyl chloroformate, pyridine, and ethanol. This approach elucidated complex interactions and
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13

Lezama, Jesus, Rosa M. Domínguez, and Gabriel Chuchani. "Kinetics of the Gas-Phase Elimination Reaction of Benzyl Chloroformate and Neopentyl Chloroformate." International Journal of Chemical Kinetics 47, no. 2 (2014): 104–12. http://dx.doi.org/10.1002/kin.20896.

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14

Geffken, Detlef, and Cordula Riederer. "Synthese, Reaktivität und fungizide Eigenschaften von 4-Hydroxy(Alkoxy)iminooxazolidin-2-onen." Scientia Pharmaceutica 69, no. 4 (2001): 265–70. http://dx.doi.org/10.3797/scipharm.aut-01-197.

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4-Hydroxyimino-oxazolidin-2-ones (3) were prepared by hydroxylaminolysis of 4-alkoxy-3-oxazolin-2-ones (2). Treatment of 3a with ethyl chloroformate in a molar ratio of 1:1 afforded 6, whereas the reaction 3a with two equivalents of ethyl chloroformate produced 4 and 5. By reacting 3a,d with diphosgene or thiophosgene the novel tetrahydro-oxazolo[ 4,3-c]1 ,2,4-oxadiazoles 7 could beobtained in low yields. From the prepared novel compounds only 3a displayed a remarkable fungicidal activity at 2 ppm.
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15

Andraos, John. "A green metrics assessment of phosgene and phosgene-free syntheses of industrially important commodity chemicals." Pure and Applied Chemistry 84, no. 3 (2011): 827–60. http://dx.doi.org/10.1351/pac-con-11-06-12.

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Synthesis plans for the following important industrial commodity chemicals using phosgene and phosgene-free chemistries have been analyzed and compared by green metrics to determine the most material-efficient routes so far developed (number of plans given in parentheses): dimethyl carbonate (DMC) (31), diphenyl carbonate (DPC) (40), diphenylurea (DPU) (23), methyl carbamate (MC) (8), methyl chloroformate (MCF) (6), methyl N-phenylcarbamate (MNPC) (25), methyl phenyl carbonate (MPC) (32), phenyl isocyanate (PI) (19), phenyl chloroformate (PCF) (10), and urea (13). Implications of these results
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16

Turhanen, Petri A., Janne Weisell, and Jouko J. Vepsäläinen. "Preparation of mixed trialkyl alkylcarbonate derivatives of etidronic acid via an unusual route." Beilstein Journal of Organic Chemistry 8 (November 20, 2012): 2019–24. http://dx.doi.org/10.3762/bjoc.8.228.

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A method to prepare four (3a–d) trialkyl alkylcarbonate esters of etidronate from P,P'-dimethyl etidronate and alkyl chloroformate was developed by utilizing unexpected demethylation and decarboxylation reactions. The reaction with the sterically more hindered isobutyl chloroformate at a lower temperature (90 °C) produced the P,P'-diester (2) as a stable intermediate product. A possible reaction mechanism is discussed to explain these methyl substitutions. These unusual reactions also clarify why it is difficult to prepare alkylcarbonate prodrugs from bisphosphonates. The compounds prepared we
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17

Chen, Francis M. F., and N. Leo Benoiton. "Diisopropylethylamine eliminates dipeptide formation during the acylation of amino acids using benzoyl chloride and some alkyl chloroformates." Canadian Journal of Chemistry 65, no. 6 (1987): 1224–27. http://dx.doi.org/10.1139/v87-206.

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Acylation of amino acids using benzoyl chloride in aqueous alkali leads to benzoylamino acids containing one percent of benzoyldipeptide. Use of diisopropylethylamine instead of sodium hydroxide as base eliminates the side reaction responsible for the contaminant. Ethoxycarbonylamino acids are advantageously prepared in the same manner using ethyl chloroformate or diethyl dicarbonate. The latter gives rise to some N-substituted dipeptide when used in aqueous alkali. The method is unsatisfactory for the benzyloxycarbonylation of amino acids. Use of 9-fluorenylmethyl chloroformate and diisopropy
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18

Yan, Jin-wu, Xiao-lin Wang, Qi-feng Tan, Pei-fen Yao, Jia-heng Tan, and Lei Zhang. "A colorimetric and fluorescent dual probe for palladium in aqueous medium and live cell imaging." Analyst 141, no. 8 (2016): 2376–79. http://dx.doi.org/10.1039/c6an00204h.

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19

D'Souza, Malcolm J., Anthony M. Darrington, and Dennis N. Kevill. "A Study of Solvent Effects in the Solvolysis of Propargyl Chloroformate." ISRN Organic Chemistry 2011 (April 11, 2011): 1–6. http://dx.doi.org/10.5402/2011/767141.

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The specific rates of solvolysis of propargyl chloroformate (1) are analyzed in 22 solvents of widely varying nucleophilicity and ionizing power values at 25.0°C using the extended Grunwald-Winstein equation. Sensitivities to solvent nucleophilicity (l) of 1.37 and to solvent ionizing power (m) of 0.47 suggest a bimolecular process with the formation of a tetrahedral intermediate. A plot of the rates of solvolysis of 1 against those previously reported for phenyl chloroformate (2) results in a correlation coefficient (R) of 0.996, a slope of 0.86, and an F-test value of 2161. The unequivocal c
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20

Zakrzewski, Jerzy, and Maria Krawczyk. "Reactions of Nitroxides. Part XII [1]. – 2,2,6,6-Tetramethyl-1-oxyl- 4-piperidyl Chloroformate – A New Reactive Nitroxyl Radical. A One-pot Synthesis of 2,2,6,6-Tetramethyl-1-oxyl-4-piperidyl N,N-Dialkyl-carbamates." Zeitschrift für Naturforschung B 66, no. 5 (2011): 493–98. http://dx.doi.org/10.1515/znb-2011-0509.

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The reactive nitroxides 2,2,6,6-tetramethyl-1-oxyl-4-piperidyl chloroformate and 2,2,6,6-tetramethyl- 1-oxyl-4-piperidyl chlorothionoformate were synthesized from 2,2,6,6-tetramethyl-4-hydroxypiperidin- 1-oxyl and diphosgene (68%) or thiophosgene (61%), respectively. The reactions of the chloroformate and chlorothionoformate with lower secondary amines lead to 2,2,6,6-tetramethyl- 1-oxyl-4-piperidyl N,N-dialkylcarbamates (59 - 94%) and thionocarbamates (35 - 65%), respectively. Unexpectedly, the same 2,2,6,6-tetramethyl-1-oxyl-4-piperidyl N,N-dialkylcarbamates were obtained directly in a one-p
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21

Tan, Hui-ya, Jing-gong Liu, Lin-fu Zhou, Yu-kun Li, Jin-wu Yan, and Lei Zhang. "A smart NIR fluorescent probe for the highly selective detection of palladium." RSC Advances 7, no. 11 (2017): 6583–86. http://dx.doi.org/10.1039/c6ra27502h.

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22

Sugisawa, Naoto, Hiroyuki Nakamura та Shinichiro Fuse. "Micro-flow synthesis of β-amino acid derivatives via a rapid dual activation approach". Chemical Communications 56, № 33 (2020): 4527–30. http://dx.doi.org/10.1039/d0cc01403f.

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23

Quigley, Andrew, Damian Connolly, and Wayne Cummins. "Determination of selected amino acids in milk using dispersive liquid–liquid microextraction and GC-MS." Analytical Methods 11, no. 28 (2019): 3538–45. http://dx.doi.org/10.1039/c9ay00995g.

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An ethyl chloroformate derivatisation followed by dispersive liquid–liquid microextraction (DLLME) method, combined with GC-MS was developed for the analysis of free amino acids in various milk products.
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24

Jadhav, Vinod H., Shubhada S. Deshpande, Hanumant B. Borate, and Radhika D. Wakharkar. "Microwave Promoted Solvent-free One-pot Synthesis of N,N′-disubstituted Urea Derivatives." Journal of Chemical Research 2005, no. 3 (2005): 205–8. http://dx.doi.org/10.3184/0308234054213753.

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An efficient one-pot synthesis of N,N′-disubstituted urea derivatives from substituted anilines, ethyl chloroformate and methyl anthranilate or methyl 3-amino-2-butenoate under microwave irradiation is reported.
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25

Wang, Bing-Tao, Hua-Dong Yue, Shu-Ping Luo, Li-Ping Wang, and Dan-Qian Xu. "Diphenyl-5,6,7,7a-tetrahydropyrrolo[1,2-c]oxazol-3(1H)-one." Acta Crystallographica Section E Structure Reports Online 63, no. 3 (2007): o1108—o1109. http://dx.doi.org/10.1107/s1600536807004394.

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The title compound, C18H17NO2, synthesized from enantiomerically pure L-proline, methyl chloroformate and a Grignard reagent, crystallizes with two molecules in the asymmetric unit. A chair conformation is adopted by the two fused five-membered rings.
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26

Yan, Jin-wu, Jia-ying Zhu, Qi-feng Tan, et al. "Development of a colorimetric and NIR fluorescent dual probe for carbon monoxide." RSC Advances 6, no. 70 (2016): 65373–76. http://dx.doi.org/10.1039/c6ra14409h.

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Herein, the first example of colorimetric and near-infrared fluorescent dual probe for carbon monoxide (CO) has been developed by assembling allyl chloroformate moiety with naphthofluorescein fluorophore, which enables the label-free and visual detection of CO.
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27

Bian, Gaofeng, Weiguang Shan, and Weike Su. "A One-pot Preparation of Isothiocyanates from Amines Using Two Phosgene Substitutes: Bis-(trichloromethyl) Carbonate and Trichloromethyl Chloroformates." Journal of Chemical Research 2005, no. 9 (2005): 585–86. http://dx.doi.org/10.3184/030823405774308862.

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A series of isothiocyanates have been prepared in high yields in a one-pot reaction from commercial amines and carbon disulfide under mild conditions using bis(trichloromethyl)carbonate (BTC) and trichloromethyl chloroformate (TCF) as reagents in the presence of base.
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28

Deady, LW, AM Ganakas та BH Ong. "Ethoxycarbonylation of α-Cyano-o-toluonitrile and Cyclization to Isoquinolines and Pyrimido[4,5-c]isoquinolines". Australian Journal of Chemistry 42, № 7 (1989): 1029. http://dx.doi.org/10.1071/ch9891029.

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α -Cyano-o-toluonitrile is a-ethoxycarbonylated with ethyl chloroformate and 4-dimethylamino- pyridine, and cyclized to ethyl 3-amino-1-bromoisoquinoline-4-carboxylate. This is further functionalized, and examples of third-ring annulation to pyrimido [4,5-c] isoquinolines are reported.
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29

D’Souza, Malcolm, Darneisha Reed, Kevin Erdman, Jin Burm Kyong, and Dennis Kevill. "Grunwald-Winstein Analysis - Isopropyl Chloroformate Solvolysis Revisited." International Journal of Molecular Sciences 10, no. 3 (2009): 862–79. http://dx.doi.org/10.3390/ijms10030862.

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30

方, 成涛. "The Synthesis of Long Chain Alkyl Chloroformate." Advances in Material Chemistry 09, no. 03 (2021): 86–91. http://dx.doi.org/10.12677/amc.2021.93011.

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31

Sammet, Benedikt. "4-Nitrophenyl Chloroformate: A Versatile Coupling Reagent." Synlett 2009, no. 18 (2009): 3050–51. http://dx.doi.org/10.1055/s-0029-1218291.

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32

Koo, Christina, Matthew Cox, Gunter Klass, and Martin Johnston. "Stereochemical Analysis of Methorphan Using (−)-Menthyl Chloroformate." Journal of Forensic Sciences 57, no. 6 (2012): 1549–55. http://dx.doi.org/10.1111/j.1556-4029.2012.02162.x.

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33

Mizuno, Takumi, Junko Takahashi, and Akiya Ogawa. "Non-phosgene synthesis of benzyl chloroformate (CbzCl)." Tetrahedron Letters 43, no. 43 (2002): 7765–67. http://dx.doi.org/10.1016/s0040-4039(02)01834-8.

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34

Bruneel, Dorine, and Etienne Schacht. "Chemical modification of pullulan: 2. Chloroformate activation." Polymer 34, no. 12 (1993): 2633–37. http://dx.doi.org/10.1016/0032-3861(93)90601-6.

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35

Mizuno, Takumi, Junko Takahashi, and Akiya Ogawa. "Non-phosgene Synthesis of Benzyl Chloroformate (CbzCl)." ChemInform 34, no. 1 (2003): no. http://dx.doi.org/10.1002/chin.200301081.

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36

Lezama, Jesus, and Gabriel Chuchani. "Kinetic and Mechanisms of the Homogeneous, Unimolecular Elimination of Phenyl Chloroformate andp-Tolyl Chloroformate in the Gas Phase." International Journal of Chemical Kinetics 47, no. 10 (2015): 664–70. http://dx.doi.org/10.1002/kin.20939.

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37

Lyčka, Antonín, and Karel Palát. "A 15N, 13C, and 1H NMR study of reaction products from arylguanidines and chloroformate esters." Collection of Czechoslovak Chemical Communications 56, no. 7 (1991): 1505–11. http://dx.doi.org/10.1135/cccc19911505.

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The 15N, 13C, and 1H NMR spectra of the reaction products from arylguanidines with two mols of chloroformate esters have been measured. With application of the corresponding 15N isotopomer it has been proved that the reaction products have the structures IIIa-IIIc.
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38

Marinho, Elina, and M. Proença. "The Reaction of 2-(Acylamino)benzonitriles with Primary Aromatic Amines: A Convenient Synthesis of 2-Substituted 4-(Arylamino)quinazolines." Synthesis 47, no. 11 (2015): 1623–32. http://dx.doi.org/10.1055/s-0034-1380322.

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2-Substituted 4-(arylamino)quinazolines were prepared from 2-(acylamino)benzonitriles and primary arylamines by refluxing in either ethanol using trifluoroacetic acid as a catalyst or acetic acid. The 2-aminobenzonitrile was acylated by reaction with anhydrides, isocyanates, or ethyl chloroformate at room temperature.
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39

Gil, Diego M., María E. Tuttolomondo, Sebastian Blomeyer, Christian G. Reuter, Norbert W. Mitzel, and Aída Ben Altabef. "Gas-phase structure of 2,2,2-trichloroethyl chloroformate studied by electron diffraction and quantum-chemical calculations." Physical Chemistry Chemical Physics 18, no. 1 (2016): 393–402. http://dx.doi.org/10.1039/c5cp05295e.

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The molecular structure and conformational properties of 2,2,2-trichloroethyl chloroformate, ClC(O)OCH<sub>2</sub>CCl<sub>3</sub> were determined experimentally using gas-phase electron diffraction (GED) and theoretically based on quantum-chemical calculations at the MP2 and DFT levels of theory.
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40

Freitas, Pedro, Dina Maciel, Jolanta Jaśkowska, et al. "Facile Synthesis of a Cholesterol–Doxorubicin Conjugate Using Cholesteryl-4-nitrophenolate as an Activated Ester and Biological Property Analysis." Organics 6, no. 1 (2025): 6. https://doi.org/10.3390/org6010006.

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Developing new biomolecule–drug conjugates as prodrugs is a promising area for natural products and pharmaceutical chemistry. Herein, a cholesterol–doxorubicin (Chol-DOX) conjugate was synthesized using cholesteryl-4-nitrophenolate as a facile, stable, and controllable activated ester. This approach offers an alternative to the conventional HCl-emitting cholesteryl chloroformate method. Semi-empirical theoretical calculations showed that cholesteryl-4-nitrophenolate exhibits moderate reactivity, greater thermodynamic stability, a higher dipole moment, and a lower HOMO-LUMO energy gap compared
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41

Lin, Xufeng, Qiaoxia Zhou, Rihuang Pan, and Huanyu Shan. "Synthesis and Optical Resolution of 3,3,3′,3′-Tetramethyl-1,1′-spirobiindane-7,7′-diol." Synthesis 51, no. 02 (2018): 557–63. http://dx.doi.org/10.1055/s-0037-1610831.

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A novel chiral C2-symmetric spiro diol, 3,3,3′,3′-tetramethyl-1,1′-spirobiindane-7,7′-diol (TMSIOL), was conveniently prepared via practical seven-step route from Bisphenol A in 45.1% overall yield. l-Menthyl chloroformate is used as optical resolving agent for the separation of the two enantiomers of TMSIOL.
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42

Benicha, M., A. Azmani, M. Akssira, and DT Hurst. "Synthesis of New Arylsulfonylurea Derivatives of Saccharin." Australian Journal of Chemistry 46, no. 6 (1993): 903. http://dx.doi.org/10.1071/ch9930903.

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Some new sulfonylurea derivatives (2a-j) of saccharin have been obtained by the reaction of ethyl 3-oxo-1,2-benzisothiazole-2(3H)-carboxylate 1,1-dioxide (1) with the appropriate amine. Ethyl 3-oxo-1,2-benzisothiazole-2(3H)-carboxylate 1,1-dioxide was obtained, in excellent yield, by the reaction of ethyl chloroformate with saccharin.
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43

Koh, Han-Joong, and Suk-Jin Kang. "Kinetic Studies of the Solvolyses of Isopropenyl Chloroformate." Bulletin of the Korean Chemical Society 31, no. 6 (2010): 1793–96. http://dx.doi.org/10.5012/bkcs.2010.31.6.1793.

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44

D’Souza, Malcolm John, Kevin Edward Shuman, Arnold Ochieng Omondi, and Dennis Neil Kevill. "Detailed analysis for the solvolysis of isopropenyl chloroformate." European Journal of Chemistry 2, no. 2 (2011): 130–35. http://dx.doi.org/10.5155/eurjchem.2.2.130-135.405.

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45

Tikhomirov, D. A., and A. V. Eremeev. "Reaction of 1-(arylethynyl)aziridines with ethyl chloroformate." Chemistry of Heterocyclic Compounds 23, no. 10 (1987): 1141. http://dx.doi.org/10.1007/bf00476549.

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46

Schaefgen, J. R. "Poly(vinyl chloroformate) and derivatives: Preparation and properties." Journal of Polymer Science Part C: Polymer Symposia 24, no. 1 (2007): 75–88. http://dx.doi.org/10.1002/polc.5070240109.

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47

von Angerer, Silvia, Erwin von Angerer, Reinhard Ambros, and Wolfgang Wiegrebe. "Ring-cleavage of Phthalidisoquinoline Alkaloids by Ethyl Chloroformate." Archiv der Pharmazie 325, no. 7 (1992): 425–31. http://dx.doi.org/10.1002/ardp.19923250710.

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48

Kevill, Dennis N., Jong Chul Kim, and Jin Burm Kyong. "Correlation of the Rates of Solvolysis of Methyl Chloroformate with Solvent Properties." Journal of Chemical Research 23, no. 2 (1999): 150–51. http://dx.doi.org/10.1177/174751989902300242.

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The specific rates of solvolyis of methyl chloroformate are very well correlated by the extended Grunwald–Winstein equation over a wide range of solvents; the pathway is believed to be predominantly addition–elimination, except that a positive deviation for solvolysis in 90% 1,1,1,3,3,3-hexafluoropropan-2-ol suggests an 80% contribution from an ionisation mechanism.
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49

Patroni, JJ, and RV Stick. "The Treatment of Some Cyclic Thiocarbonates With Methyl Halide/Propylene Oxide." Australian Journal of Chemistry 40, no. 5 (1987): 795. http://dx.doi.org/10.1071/ch9870795.

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Treatment of thiocarbonates (OCSO) with methyl iodidelpropylene oxide at 80� can lead smoothly to the carbonate. In some cases, a competing process is the formation of iodo thiocarbonates ( OCOSMe ), and an explanation is provided for the product distributions observed. The corresponding reactions with methyl bromide and methyl chloride (as methyl chloroformate ) are much less efficient.
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50

Wang, Li, Ya-jun Li, and Zheng-wei Li. "Towards validating new enzymatic routes for synthetic conversion: 7,10-bis-O-(2,2,2-trichloroethoxycarbonyl)-10-deacetyl baccatin III–ethyl acetate–water (1/1/1)." Acta Crystallographica Section C Structural Chemistry 71, no. 3 (2015): 191–94. http://dx.doi.org/10.1107/s2053229614027399.

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The title compound, C34H38Cl6O14·C4H8O2·H2O, prepared by the reaction of 10-deacetyl baccatin III with 2,2,2-trichloroethyl chloroformate in pyridine, crystallizesviastrong intermolecular hydrogen bonds and noncovalent interactions between 7,10-bis-O-(2,2,2-trichloroethoxycarbonyl)-10-deacetyl baccatin III (7,10-di-Troc-DAB), water and ethyl acetate. A detailed comparison of the molecular conformation with those of related structures is presented.
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