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Page 1
Synthesis of trifold-labeled versatile reagent [3,5-(13) C(2) ,4-(15) N]4-phenyl-1,2,4-triazoline-3,5-dione.
Bourgeois F, Höller U, Netscher T. Bourgeois F, et al. J Labelled Comp Radiopharm. 2023 Dec;66(14):461-466. doi: 10.1002/jlcr.4067. Epub 2023 Nov 20. J Labelled Comp Radiopharm. 2023. PMID: 37985145
We herein describe the first synthesis of (13) C and (15) N labeled [3,5-(13) C(2) ,4-(15) N]4-phenyl-1,2,4-triazoline-3,5-dione utilizing the Cookson/Zinner-Deucker synthesis of urazoles. ...
We herein describe the first synthesis of (13) C and (15) N labeled [3,5-(13) C(2) ,4-(15) N]4-phenyl-1,2,4 …
Synthesis of mesoionic triazolones via a formal [3+2] cycloaddition between 4-phenyl-1,2,4-triazoline-3,5-dione and alkynes.
Kuroda Y, Krell M, Kurokawa K, Takasu K. Kuroda Y, et al. Chem Commun (Camb). 2024 Feb 8;60(13):1719-1722. doi: 10.1039/d3cc05088b. Chem Commun (Camb). 2024. PMID: 38240015
Herein, we demonstrate that 1,1,1,3,3,3-hexafluoro-2-propanol facilitates the unusual [3+2] cycloaddition between 4-phenyl-1,2,4-triazoline-3,5-dione and alkynes, resulting in the formation of unprecedented mesoionic …
Herein, we demonstrate that 1,1,1,3,3,3-hexafluoro-2-propanol facilitates the unusual [3+2] cycloaddition between 4-phenyl- …
Water-Involved Ring-Opening of 4-Phenyl-1,2,4-triazoline-3,5-dione for "Photo-Clicked" Access to Carbamoyl Formazan Photoswitches In Situ.
Zheng Y, Zhou Y, Zhang Y, Deng P, Zhao X, Jiang S, Du G, Shen X, Xie X, Su Z, Yu Z. Zheng Y, et al. Chem Asian J. 2022 Jan 17;17(2):e202101239. doi: 10.1002/asia.202101239. Epub 2021 Dec 16. Chem Asian J. 2022. PMID: 34851039
Cyclic azodicarbonyl derivatives, particularly 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD), commonly serve as arenophile, dienophile, enophile and electrophile. ...
Cyclic azodicarbonyl derivatives, particularly 4-phenyl-1,2,4-triazoline-3,5-dion …
Donor-Acceptor Bicyclopropyls as 1,6-Zwitterionic Intermediates: Synthesis and Reactions with 4-Phenyl-1,2,4-triazoline-3,5-dione and Terminal Acetylenes.
Potapov KV, Denisov DA, Glushkova VV, Novikov RA, Tomilov YV. Potapov KV, et al. J Org Chem. 2020 Dec 4;85(23):15562-15576. doi: 10.1021/acs.joc.0c02293. Epub 2020 Nov 11. J Org Chem. 2020. PMID: 33175521
The use of GaCl(3) or GaBr(3) as a Lewis acid and terminal aryl or alkyl acetylenes as 1,6-zwitterion interceptors allows the alkyl substituent to be grown to give the corresponding acyclic 7-chloro(bromo)-hepta-2,6-dienylmalonates. The reaction of ABCDs with 4-phenyl …
The use of GaCl(3) or GaBr(3) as a Lewis acid and terminal aryl or alkyl acetylenes as 1,6-zwitterion interceptors allows the alkyl substitu …
Synthesis, C-H bond functionalisation and cycloadditions of 6-styryl-1,2-oxathiine 2,2-dioxides.
Gabbutt CD, Heron BM, Lilly T, Ogwang OW, Zonidis D. Gabbutt CD, et al. Org Biomol Chem. 2021 Jul 28;19(29):6431-6446. doi: 10.1039/d1ob01125a. Org Biomol Chem. 2021. PMID: 34231619
Whilst the cycloaddition of benzyne, derived from in situ fluoride initiated decomposition of 2-(trimethylsilyl)phenyl trifluoromethanesulfonate, to the substituted 1,2-oxathiine 2,2-dioxides resulted in low yields of substituted naphthalenes, the addition of 4-phenyl …
Whilst the cycloaddition of benzyne, derived from in situ fluoride initiated decomposition of 2-(trimethylsilyl)phenyl trifluoromethanesulfo …
Polar hetero-Diels-Alder reactions of 4-alkenylthiazoles with 1,2,4-triazoline-3,5-diones: an experimental and computational study.
Alajarín M, Cabrera J, Pastor A, Sanchez-Andrada P, Bautista D. Alajarín M, et al. J Org Chem. 2008 Feb 1;73(3):963-73. doi: 10.1021/jo7021668. Epub 2008 Jan 4. J Org Chem. 2008. PMID: 18173287
The hetero-Diels-Alder reactions of 4-alkenylthiazoles with 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD) lead to new heteropolycyclic systems in excellent yields and high levels of stereocontrol through an exclusively s …
The hetero-Diels-Alder reactions of 4-alkenylthiazoles with 4-phenyl-1,2,4-triazoline-3, …
Effector-sensitive cross-linking of phosphorylase b kinase by the novel cross-linker 4-phenyl-1,2,4-triazoline-3,5-dione.
Ayers NA, Nadeau OW, Read MW, Ray P, Carlson GM. Ayers NA, et al. Biochem J. 1998 Apr 1;331 ( Pt 1)(Pt 1):137-41. doi: 10.1042/bj3310137. Biochem J. 1998. PMID: 9512471 Free PMC article.
The dienophile 4-phenyl-1,2,4-triazoline-3,5-dione (PTD) was identified as a novel protein cross-linker, and utilized as a conformational probe of phosphorylase b kinase (PhK), a hexadecameric enzyme with the subunit …
The dienophile 4-phenyl-1,2,4-triazoline-3,5-dione (PTD) was identified as a …
Fused polycyclic compounds via cycloaddition of 4-(1'-cyclohexenyl)-5-iodo-1,2,3-triazoles with 4-phenyl-1,2,4-triazoline-3,5-dione: the importance of a sacrificial iodide leaving group.
Michaels HA, Simmons JT, Clark RJ, Zhu L. Michaels HA, et al. J Org Chem. 2013 May 17;78(10):5038-44. doi: 10.1021/jo400271j. Epub 2013 Apr 26. J Org Chem. 2013. PMID: 23621085
4-(1'-Cyclohexenyl)-5-iodo-1,2,3-triazole and 4-phenyl-1,2,4-triazoline-3,5-dione undergo a formal Diels-Alder reaction, which following an S(N)2' solvolysis process to displace the iodo group affords a fused polycycl …
4-(1'-Cyclohexenyl)-5-iodo-1,2,3-triazole and 4-phenyl-1,2,4-triazoline-3,5-dione …
Quantification of Alfacalcidol Tablets Dissolution Content by Chemical Derivatization and LC-MS.
Liu Y, Chen X, Yuan S, Liu W, He L, Zhang Q. Liu Y, et al. J Anal Methods Chem. 2020 Feb 7;2020:6201656. doi: 10.1155/2020/6201656. eCollection 2020. J Anal Methods Chem. 2020. PMID: 32089948 Free PMC article.
After alfacalcidol dissolution solution was extracted with dichloromethane to remove surfactant and inorganic salts, alfacalcidol was then derivatized via a Cookson reagent, 4-phenyl-1, 2, 4-triazoline-3, 5-dione (PTA …
After alfacalcidol dissolution solution was extracted with dichloromethane to remove surfactant and inorganic salts, alfacalcidol was then d …
86 results