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Tetrazine is a compound that consists of a six-membered aromatic ring containing four nitrogen atoms with the molecular formula C2H2N4. The name tetrazine is used in the nomenclature of derivatives of this compound. Three core-ring isomers exist: 1,2,3,4-tetrazines, 1,2,3,5-tetrazines, and 1,2,4,5-tetrazines, also known as v-tetrazines, as-tetrazines and s-tetrazines respectively.[1] https://truegload223.weebly.com/hack-casino-machine.html.
1,2,3,4-Tetrazines[edit]
1,2,3,4-Tetrazines are often isolated fused to an aromatic ring system and are stabilized as the dioxide derivatives. http://alneqnx.xtgem.com/Blog/__xtblog_entry/19240100-how-to-use-adobe-photoshop-software#xt_blog.
1,2,4,5-Tetrazine[edit]
Little caesars casino las vegas. Cdock 3 0 3. 1,2,4,5-Tetrazines are very well known and myriad 3,6-disubstituted 1,2,4,5-tetrazines are known.[2] These materials are of use in the area of energetic chemistry.
The compound 3,6-di-2-pyridyl-1,2,4,5-tetrazine'[3] has two pyridine substituents and is of importance as a reagent in Diels-Alder reactions. It reacts with norbornadiene in a sequence of one DA reaction and two retro-DA reactions to cyclopentadiene and a pyridazine with exchange of an acetylene unit:[4]
With norbornadiene fused to an arene the reaction stops at an intermediary stage [5]
With norbornadiene fused to an arene the reaction stops at an intermediary stage [5]
See also[edit]
Ring Menu 1 3 5 Qt
- 6-membered rings with one nitrogen atom: pyridine
- 6-membered rings with two nitrogen atoms: diazines
- 6-membered rings with three nitrogen atoms: triazines
- 6-membered rings with five nitrogen atoms: pentazine
- 6-membered rings with six nitrogen atoms: hexazine
References[edit]
- ^Alvarez-Builla, Julio; Jose Vaquero, Juan; Barluenga, José (2011). Modern Heterocyclic Chemistry. Wiley-VCH. p. 1778. ISBN978-3527332014.
- ^(see United States Patent 6645325)
- ^Datasheet: Link
- ^Dalkılıç, Erdin, and Arif Daştan. 'Synthesis of cyclopentadiene derivatives by retro-Diels–Alder reaction of norbornadiene derivatives.' Tetrahedron 71.13 (2015): 1966-1970.Dalkılıç, Erdin, et al. 'Novel and versatile protocol for the preparation of functionalized benzocyclotrimers.' Tetrahedron Letters 50.17 (2009): 1989-1991.
- ^π-Bond Screening in Benzonorbornadienes: The Role of 7-Substituents in Governing the Facial Selectivity for the Diels-Alder Reaction of Benzonorbornadienes with 3,6-Di(2-pyridyl)-s-Tetrazine. Ronald N. Warrener and Peter A. Harrison Molecules2001, 6, 353–369 Online Article
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