Summary The reaction of benzene with hydroxyl radicals affords phenol and 1,4-benzoquinone in 0.18±0.05 and 0.02±0.01 yield, respectively. The main reaction of the hydroxycyclohexadienyl radical with oxygen leads to the respective peroxy radical which in turn decomposes to ring cleavage products ...
Crystal structure of (CO)2(NO)Cr{η5-C5H4C(CH3) = NNH[2,4-(NO2)2C6H3]} and unequivocal assignments of C(2,5) and C(3,4) on the cyclopentadienyl ring of cynichrodene, tricarbonyl(η5-cyclopentadienyl)methylmolybdenum and tricarbonyl(η5-cyclopentadienyl)methyltungsten bearing a 2,4-...
The first such reaction was observed when we attempted to acetylate dienol l a o using the acetic anhydride - pyridine reagent conventionally employed for the acetylation of hydroxyl groups (23), whence 1,2- dimethyl-4,5-dinitrobenzene(11) was obtained. The dienol itself was stable to ...
Exemplary six-membered heteroaromatic molecules, that differ from benzene by inclusion of one heteroatom, are pyridine, phosphorine, arsabenzene, and borabenzene. This theoretical study concerns the influence of the heteroatom present in these molecules on the properties of substituents of two types: ...
Therefore, the electronegativity of the heteroatom in the arene ring highly influences the interactions within the substituted system. Depending on the type of substituent— electron-withdrawing (NO2) or electron-donating (NH2)—interactions can be enhanced or weakened with respect to benzene ...