Neue Synthese für N-Vinylamide

Schmitt, Günter; Ebertz, Wolfgang

doi:10.1002/ange.19820940831

Cited by 8 publications

(5 citation statements)

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“…The alternative mechanism is based on the proton detachment from intermediate 2 with the formation of carbanion 5 . Both initial compound 1 and intermediate 2 can act as bases in these reactions . One can propose that two species formed in these reactions, namely carbanion 5 and carbocation 6 , can exhibit absorption in the visible spectral region, the spectrum of which could be similar to that of intermediate 2 .…”

Section: Resultsmentioning

confidence: 99%

Mechanistic Aspects of Photoinduced Rearrangement of 2,3-Diarylcyclopentenone Bearing Benzene and Oxazole Moieties

et al. 2018

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Photoinduced rearrangement of diarylethenes to naphthalenes or isoelectronic benzoannulated heterocycles is a novel reaction in preparative organic photochemistry. Recently it was shown that unsymmetrical diarylethenes containing benzene and oxazole derivatives efficiently undergo this transformation leading to amide derivatives of naphthalene. Mechanistic study of skeletal rearrangement for a typical representative of these compounds, namely 3-(5-methyl-2-phenyl-1,3-oxazol-4-yl)-2-phenylcyclopent-2-en-1-one, was performed by stationary and laser flash photolysis as well as density functional theory (DFT) calculations. The mechanism of the rearrangement was found to comprise several thermal stages. Both singlet and triplet states of the initial compound can be transformed to the reaction product, which results in the dependence of the quantum yield vs concentration of dissolved oxygen. Three reactive intermediates were registered in the laser flash photolysis experiment; the predicted structures were in accordance with DFT calculations of the electronic absorption spectra. In addition to the previously proposed mechanism of skeletal rearrangement based on a sigmatropic shift of hydrogen, two new parallel pathways based on formation of a carbanion/carbocation were determined.

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Section: Resultsmentioning

confidence: 99%

Mechanistic Aspects of Photoinduced Rearrangement of 2,3-Diarylcyclopentenone Bearing Benzene and Oxazole Moieties

et al. 2018

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“…It should be noted that the occurrence of such skeletal rearrangement is dictated by the structure of the diarylethene, namely the presence of a hydrogen atom at the ortho -position of the benzene ring and the methyl group at position 5 of the oxazole ring, which prevents oxidation leading to the formation of phenanthrene system. Another an important factor is an ability to seamlessly undergo opening of the oxazoline ring (compound 6 ) formed upon irradiation …”

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confidence: 99%

Photoinduced Skeletal Rearrangement of Diarylethenes Comprising Oxazole and Phenyl Rings

Lvov

Ширинян²,

Качала³

et al. 2014

Org. Lett.

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A novel photochemical rearrangement of diarylethenes bearing oxazole and benzene derivatives as aryl moieties that results in the formation of polyaromatic systems was investigated. The mechanism of the transformation includes photocyclization, sequential [1,9] and [1,3]-hydrogen shifts, as well as a lateral oxazole ring-opening process. It was shown that this reaction can be an effective synthetically preparative method for the preparation of naphthalene (polyaromatic) derivatives.

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“…93 In contrast to this, Schmitt famously saw political life as predicated on an antagonistic relationship between that of 'friend and enemy.' 94 The [enemy] is … the other, the stranger; and it is sufficient for his nature that he is, in a specially intense way, existentially something different and alien, so that in the extreme case conflicts with him are possible. 95 Without this friend/enemy distinction, 'political life would vanish altogether.'…”

Section: How This Article Fits Into and Extends Current Law And Musicmentioning

confidence: 99%

Reading Wilhelm Furtwängler Jurisprudentially: Furtwängler’s Music Making in the Light of Legal Philosophy

Ondrich

2018

Int J Semiot Law

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This article examines the work of the German conductor Wilhelm Furtwängler through legal philosophy by applying recent scholarship in the intersection of law and music and a method which MacNeil describes as 'reading jurisprudentially.' Furtwängler saw himself as a custodian of a great German cultural tradition, a tradition which included not only German musicians but German jurists such as Friedrich Carl von Savigny and Carl Schmitt. Due to this shared German tradition, concepts in Furtwängler's philosophy of music shares parallels with these German philosophers of law. Furtwängler, much like Savigny, attempted to protect law and music from modern trends which they saw as reducing law and music to a pure philosophical abstraction and in the process severing the organic links between the people and their law and music. Furtwängler also tried to protect music from the Nazis who attempted to have sovereign control over all Germany, including its music. Applying Schmitt's idea of sovereignty as 'he who decides on the exception' to Furtwängler's 1942 performance of Beethoven's Ninth Symphony in Berlin, Germany, I will argue that Furtwängler protects the love and humanism of the music by suspending it and by doing so preventing it from being associated with Nazism.

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Neue Synthese für N-Vinylamide

Cited by 8 publications

References 1 publication

Mechanistic Aspects of Photoinduced Rearrangement of 2,3-Diarylcyclopentenone Bearing Benzene and Oxazole Moieties

Mechanistic Aspects of Photoinduced Rearrangement of 2,3-Diarylcyclopentenone Bearing Benzene and Oxazole Moieties

Photoinduced Skeletal Rearrangement of Diarylethenes Comprising Oxazole and Phenyl Rings

Reading Wilhelm Furtwängler Jurisprudentially: Furtwängler’s Music Making in the Light of Legal Philosophy

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