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OZONOLYTIC FRAGMENTATION OF PHENYLIODONIUM β‐DIKETONATES; A CONVENIENT SYNTHESIS OF UNSOLVATED VIC‐TRIKETONES
Cyclische und acyclische β-Diketone (I) werden mit IodosobenzoI-diacetat (II) in Phenyliodoniumylide (III) ubergefuhrt, die mit Ozon zu vic-Triketonen (IV) oxidiert werden.
Reactions of 2,3-dihydro-2-phenyliodonium-3-oxo-benzo[b] thiolenide-1,1-dioxide
Abstract 2,3-Dihydro-2-phenyliodonium-3-oxo-benzo[b]thiolenide-1,1-dioxide was found to react with various substrates like alkenes, alkynes, thiobenzophenones etc.
Chemiluminescent and Non-Chemiluminescent Ozonations of Selected Electron-Rich Alkynes in Halomethanes
Alkynes of sufficiently high nucleophilicity react with electrophilic O3 under conversion of the alkyne function to a vicinal dicarbonyl function. Contrary to earlier investigations with alkylated orExpand
.alpha.-Oxo sulfones. 4. Correction of a pretended .alpha.-oxo sulfone by an unambiguous synthesis of the revised structure
Par synthese, on montre que le produit d'oxydation du [dichloro-1,1 dimethyl-2,2] butene-3yl phenyl sulfure (A) est la benzenesulfonyl-4 dimethyl-3,3 perhydro furannone-2 (B). Proposition d'unExpand
Redox Activation of Molecular Oxygen by Arenesulfinic Acids
Principally, 3O2 can be easily activated [1] via Single-Electron-Transfer (SET) from a suitable Donor D: and a concomitant proton transfer (PT) from a suitable proton donator H - A [2]:
Katalysierte Insertionsreaktionen in alkoholische OH‐Gruppen durch Diazoderivate aus methylenaktiven Verbindungen
Fur die Zersetzung der Diazoverbindungen 6, 9 und 12, die aus den carbonyl- und sulfonylaktivierten Methylenverbindungen 5, 8 und 11 erhalten werden, in aliphatischen Alkoholen unter OH-InsertionExpand
2,3-Dihydro-3-oxo-2-phenyliodonium-benzo[b]thiolenide-1,1-dioxide: Synthesis, decomposition and Cu-catalyzed thermal reactions
Abstract Iodonium ylide 4 was prepared in 93% yield from the reaction of β-ketosulfone 3 with phenyl iodosyl bis(trifluoroacetate). Although insoluble in most solvents, ylide 4 was readily soluble inExpand
Ozonation of 1,1,2,2‐Tetraphenylethene Revisited: Evidence for Electron‐Transfer Oxygenations
Ozonolyses of 1,1,2,2-tetraphenylethene (TPE, 1) have been described many times in the literature, but the reports are contradictory. This reaction is particularly important for understanding theExpand
Donor substituted sulfonyl carbenes - 1. Methoxy arylsulfonyl carbenes
Abstract Alkoxy arylsulfonyl carbenes 3 are generated by α elimination of hydrogen halide from (alkoxy) (halogeno) methyl aryl sulfones 1 . Their self-decomposition as well as trapping reactions withExpand
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