Synthese und [4+2]-Cycloadditionen von 4a, 8a-Methanophthalazin, das erste Propellan mit einem elektronenreichen und einem elektronenarmen 4π-Diensystem/Synthesis and [4+2] Cycloaddition Reactions of 4a, 8a-Methanophthalazine, the First Propellane with an Electronrich and an Electrondeficient 4π-Diene System
Reactions of 1,2-bis(trifluoroacetyl)benzene with nucleophiles leading to heterocyclic compounds
作者:C. Tamborski、U.D.G. Prabhu、K.C. Eapen
DOI:10.1016/s0022-1139(00)81137-9
日期:1985.6
The reaction of 1,2-bis(trifluoroacetyl)benzene (II) with ammonia, hydrazine, hydroxylamine and L-alanine has been investigated and the resulting heterocycliccompounds fully characterized on the basis of spectral data. The reaction of II with -aminophenol and -phenylenediamine led to the formation of tetracyclic compounds XI and XII respectively. The structure of compound XII has been further supported
Eine neue umlagerung eines cycloocta[d]pyridazins zum barreleno[d]pyridazin
作者:Luzian Baumann、Gunther Seitz
DOI:10.1016/s0040-4039(00)79434-2
日期:1991.10
Reaction of 1,2,4,5-tetrazine 1 with cyclooctatetraene 2 leads to cycloocta[d]-pyridazine 4 in high yield. 4, on heating in toluene, quantitatively rearranges to barreleno[d]pyridazines 8 and 9, respectively.
4-Phenyl-1,2,4-Triazoline-3,5-Dione: A Novel Dehydrogenating Agent for Dihydropyridazines
作者:Thilo Klindert、Gunther Seitz
DOI:10.1080/00397919608004571
日期:1996.7
We describe a novel and most convenient method for dehydrogenating various annulated dihydropyridazines, being formed by inverse [4+2] cycloadditions of cyclic alkenes with 1,2,4,5-tetrazines, with the easily accessible 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD) as dehydrogenating agent.