Reaction of Benzoyl Peroxide with Phenols Substituted with Electron-Withdrawing Groups

The Diels-Alder Cycloaddition Reaction of Substituted Hemifullerenes with 1,3-Butadiene: Effect of Electron-Donating and Electron-Withdrawing Substituents.

The Diels-Alder (DA) reaction provides an attractive route to increase the number of six member rings in substituted Polycyclic Aromatic Hydrocarbons (PAHs). The density functional theory (DFT) B3LYP method has been used in this work to inquire if the substitution of H over the edge of triindenetriphenylene (pristine hemifullerene 1) and pentacyclopentacorannulene (pristine hemifullerene 2), co...

Yellow NIR dye: π-fused bisbenzoBODIPYs with electron-withdrawing groups.

Bicyclo[2.2.2]octadiene-fused (BCOD-fused) bis(benzoborondipyrromethene)s (bisbenzoBODIPYs) bearing electron-withdrawing groups such as fluorine and cyano groups were prepared either by incorporating tetrafluoroisoindole moieties into BODIPY chromophores or by introducing cyano or ethoxycarbonyl groups at the 3,5-positions. The BCOD-fused bisbenzoBODIPYs were quantitatively converted to the cor...

Electron-withdrawing substituted tetrathiafulvalenes as ambipolar semiconductors

Pyridinium Salts, Insertion Reaction, Oximes Pyridinium Salts with electron-withdrawing groups in the 3-position react with aliphatic ketoximes

Die Anlagerung von Nucleophilen an quartäre Pyridinium-Salze ist seit langem bekannt [2], ebenso die Beobachtung, daß Ringöffnungsund Umlagerungsreakt ionen sich anschließen können, gerade bei der Einwirkung von z.B. Hydroxidoder Alkoxid-Ionen und Aminen [3, 4]. Quartäre Salze von Pyridincarbaldoximen, die ausgeprägt hydrophile Eigenschaf ten haben, werden als Reaktivatoren bei In toxika t ion ...

Radical reductions of alkyl halides bearing electron withdrawing groups with N-heterocyclic carbene boranes.

1,3-Dimethylimidazol-2-ylidene borane and 2,4-dimethyl-1,2,4-triazol-3-ylidene borane are found to be useful reagents for the reduction of alkyl iodides and bromides bearing nearby electron withdrawing substituents. Signatures of radical chain reactions are seen in many cases, but ionic reductions may also be occurring with some substrates. The reagents are attractive because of their low molec...