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Page 1
[(11) C]Carbonyl Difluoride-a New and Highly Efficient [(11) C]Carbonyl Group Transfer Agent.
Jakobsson JE, Lu S, Telu S, Pike VW. Jakobsson JE, et al. Angew Chem Int Ed Engl. 2020 Apr 27;59(18):7256-7260. doi: 10.1002/anie.201915414. Epub 2020 Mar 10. Angew Chem Int Ed Engl. 2020. PMID: 31995256 Free PMC article.
Herein, the synthesis and use of [(11) C]carbonyl difluoride for labeling heterocycles with [(11) C]carbonyl groups in high molar activity is described. A very mild single-pass gas-phase conversion of [(11) C]carbon monoxide into [(11) C]carbonyl difluorid …
Herein, the synthesis and use of [(11) C]carbonyl difluoride for labeling heterocycles with [(11) C]carbonyl groups in high mo …
Broad Scope and High-Yield Access to Unsymmetrical Acyclic [(11) C]Ureas for Biomedical Imaging from [(11) C]Carbonyl Difluoride.
Jakobsson JE, Telu S, Lu S, Jana S, Pike VW. Jakobsson JE, et al. Chemistry. 2021 Jul 16;27(40):10369-10376. doi: 10.1002/chem.202100690. Epub 2021 Jun 2. Chemistry. 2021. PMID: 33890705 Free PMC article.
Herein, we describe the rapid and high-yield syntheses of unsymmetrical acyclic [(11) C]ureas under mild conditions (room temperature and within 7 min) using no-carrier-added [(11) C]carbonyl difluoride with aliphatic and aryl amines. This methodology is compatible …
Herein, we describe the rapid and high-yield syntheses of unsymmetrical acyclic [(11) C]ureas under mild conditions (room temperature and wi …
Visible-Light-Induced DDQ-Catalyzed Fluorocarbamoylation Using CF3SO2Na and Oxygen.
Cho H, Jang S, Lee K, Cha D, Min SJ. Cho H, et al. Org Lett. 2023 Dec 8;25(48):8558-8563. doi: 10.1021/acs.orglett.3c03335. Epub 2023 Nov 21. Org Lett. 2023. PMID: 37987781
This protocol employs sodium trifluorosulfinate and molecular oxygen for the in situ generation of carbonyl difluoride, which is reacted with amines to afford the corresponding carbamoyl fluorides efficiently. ...
This protocol employs sodium trifluorosulfinate and molecular oxygen for the in situ generation of carbonyl difluoride, which …
Gas-Phase Chemistry of 1,1,2,3,3,4,4-Heptafluorobut-1-ene Initiated by Chlorine Atoms.
Sapkota R, Marshall P. Sapkota R, et al. Molecules. 2022 Jan 19;27(3):647. doi: 10.3390/molecules27030647. Molecules. 2022. PMID: 35163912 Free PMC article.
Oxidation of heptafluorobut-1-ene initiated by a chlorine atom creates carbonyl difluoride (CF(2)=O) and 2,2,3,3 tetrafluoropropanoyl fluoride (O=CFCF(2)CF(2)H) as the major products. ...
Oxidation of heptafluorobut-1-ene initiated by a chlorine atom creates carbonyl difluoride (CF(2)=O) and 2,2,3,3 tetrafluoropr …
The potential of thermal desorption-GC/MS-based analytical methods for the unambiguous identification and quantification of perfluoroisobutene and carbonyl fluoride in air samples.
Wingfors H, Mörén L, Wiktelius D, Magnusson R. Wingfors H, et al. J Sep Sci. 2022 Aug;45(15):2968-2976. doi: 10.1002/jssc.202200251. Epub 2022 Jun 22. J Sep Sci. 2022. PMID: 35686932 Free PMC article.
The reactive gases perfluoroisobutene and carbonyl fluoride are highly toxic and difficult to analyze in air. ...The 3,4-dimercaptotoluene derivatization method developed was also applicable for quantification of carbonyl fluoride atmospheres....
The reactive gases perfluoroisobutene and carbonyl fluoride are highly toxic and difficult to analyze in air. ...The 3,4-dimer …
Oxidation of difluorocarbene and subsequent trifluoromethoxylation.
Yu J, Lin JH, Yu D, Du R, Xiao JC. Yu J, et al. Nat Commun. 2019 Nov 25;10(1):5362. doi: 10.1038/s41467-019-13359-z. Nat Commun. 2019. PMID: 31767850 Free PMC article.
Herein we show that the oxidation of difluorocarbene could occur smoothly to generate carbonyl fluoride. The oxidation process is confirmed by successful trifluoromethoxylation, (18)O-trifluoromethoxylation, the observation of AgOCF(3) species, and DFT calculations. …
Herein we show that the oxidation of difluorocarbene could occur smoothly to generate carbonyl fluoride. The oxidation process …
Reproductive and developmental toxicity of degradation products of refrigerants in experimental animals.
Ema M, Naya M, Yoshida K, Nagaosa R. Ema M, et al. Reprod Toxicol. 2010 Jan;29(1):1-9. doi: 10.1016/j.reprotox.2009.09.005. Epub 2009 Sep 13. Reprod Toxicol. 2010. PMID: 19755147 Review.
The present paper summarizes the results of animal studies on the reproductive and developmental toxicity of the degradation products of refrigerants, including trifluoroacetic acid (TFA), carbon dioxide (CO(2)), carbon monoxide (CO), carbonyl fluoride (CF), hydroge …
The present paper summarizes the results of animal studies on the reproductive and developmental toxicity of the degradation products of ref …
Structures and Properties of trans-1,3,3,3-Tetrafluoro- propene (HFO-1234ze) and 2,3,3,3-Tetrafluoropropene (HFO-1234yf) Refrigerants.
Schwabedissen J, Glodde T, Vishnevskiy YV, Stammler HG, Flierl L, Kornath AJ, Mitzel NW. Schwabedissen J, et al. ChemistryOpen. 2020 Sep 3;9(9):921-928. doi: 10.1002/open.202000172. eCollection 2020 Sep. ChemistryOpen. 2020. PMID: 32913699 Free PMC article.
The results are discussed together with quantum-chemical calculations on the PBE0/cc-pVTZ level of theory. Combustion experiments of HFO-1234ze show carbonyl difluoride, carbon dioxide and hydrogen fluoride to be the main combustion products....
The results are discussed together with quantum-chemical calculations on the PBE0/cc-pVTZ level of theory. Combustion experiments of HFO-123 …
Morbidity and mortality resulting from acute inhalation exposures to hydrogen fluoride and carbonyl fluoride in rats.
Januszkiewicz AJ, Bazar MA, Crouse LCB, Chapman MA, Hodges SE, McCormick SJ, O'Neill AJ. Januszkiewicz AJ, et al. Inhal Toxicol. 2018 Feb;30(3):114-123. doi: 10.1080/08958378.2018.1465494. Epub 2018 May 15. Inhal Toxicol. 2018. PMID: 29764242
OBJECTIVE: Experiments were undertaken to compare morbidity and mortality from brief inhalation exposures to high levels of hydrogen fluoride (HF) and carbonyl fluoride (COF(2)). METHODS: Rats from both sexes were exposed for durations of 5 and 10 min to nominal con …
OBJECTIVE: Experiments were undertaken to compare morbidity and mortality from brief inhalation exposures to high levels of hydrogen fluorid …
4-Fluoropyrrolidine-2-carbonyl fluorides: useful synthons and their facile preparation with 4-tert-butyl-2,6-dimethylphenylsulfur trifluoride.
Singh RP, Umemoto T. Singh RP, et al. J Org Chem. 2011 May 6;76(9):3113-21. doi: 10.1021/jo1025783. Epub 2011 Mar 29. J Org Chem. 2011. PMID: 21446739
The 4-fluoropyrrolidine-2-carbonyl fluorides were converted to useful intermediates such as 4-fluoropyrrolidine-2-carboxamides, -N-methoxy-N-methylcarboxamide (Weinreb amide), -carboxylate methyl esters, and -carbonitriles in excellent yields. The crystalline N-Fmoc-cis-4-fluorop …
The 4-fluoropyrrolidine-2-carbonyl fluorides were converted to useful intermediates such as 4-fluoropyrrolidine-2-carboxamides, -N-methoxy-N …
36 results